www.siemens.com/protection SIPROTEC Compact 7SD80, 7SJ80, 7SJ81, 7SK80, 7SK81, 7RW80, 7SC80 Catalog SIP 3.01 · Edition 3 Answers for infrastructure and cities.
Overview of Documentation SIPROTEC Compact Catalog 6,3527(& &RPSDFW 6,3527(& '9' ',*6, 6,3527(& 7XWRULDO 7XWRULDO Selection Guide SIPROTEC and Reyrolle SIPROTEC 5 Devices Catalog Protection, Automation and Monitoring 5H\UROOH '9' SIPROTEC 4 Catalog - SIPROTEC easy - SIPROTEC 600 Series - Communication - Accessories Reyrolle Catalog 1) 2) RQO\ LQ HQJOLVK ,Q SUHSDUDWLRQ Fig.
Contents SIPROTEC Compact 7SD80, 7SJ80, 7SJ81, 7SK80, 7SK81, 7RW80, 7SC80 Catalog SIP 3.01 · Edition 3 Introduction Page Editorial Overview of all SIPROTEC device series 1/4 1/5 to 1/10 11 2/1 to 2/16 22 SIPROTEC Compact Selection Table, System features Operating programs Products Line Differential Protection SIPROTEC 7SD80 Invalid: Catalog SIP 3.01 · Edition 2 3/1 to 3/22 33 4/1 to 4/30 44 www.siemens.
Introduction Editorial 2 3 4 5 The SIPROTEC Compact series has been especially conceived for the requirements of the medium-voltage and industrial sector, but it can of course also be used for other applications such as high-voltage switchgear, for example. The outstanding feature of the SIPROTEC Compact series is the compact design offering, at the same time, a high functional density and user friendliness.
Introduction SIPROTEC device series Solutions for today‘s and future power supply systems – for more than 100 years 1 SIPROTEC has established itself on the energy market for decades as a powerful and complete system family of numerical protection relays and bay controllers from Siemens.
Introduction SIPROTEC device series 3 4 5 6 7 Thanks to the high modularity of hardware and software, the functionality and hardware of the devices can be tailored to the requested application and adjusted to the continuously changing requirements throughout the entire life cycle. Besides the reliable and selective protection and the complete automation function, SIPROTEC 5 offers an extensive database for operation and monitoring of modern power supply systems.
Introduction SIPROTEC device series SIPROTEC Compact – Maximum protection – minimum space 1 Reliable and flexible protection for energy distribution and industrial systems with minimum space requirements. The devices of the SIPROTEC Compact family offer an extensive variety of functions in a compact and thus space-saving 1/6 x 19“ housing. The devices can be used as main protection in medium-voltage applications or as back-up protection in high-voltage systems. LSP3.01-0007-en.
Introduction SIPROTEC device series 2 3 4 5 SIPROTEC 4 represents a worldwide successful and proven device series with more than 1 million devices in field use. Due to the homogenous system platform, the unique engineering program DIGSI 4 and the great field experience, the SIPROTEC 4 device family has gained the highest appreciation of users all over the world. Today, SIPROTEC 4 is considered the standard for numerical protection systems in all fields of application.
Introduction SIPROTEC device series SIPROTEC easy SIPROTEC easy are CT power supplied, numerical overcurrent protection relays, which can be used as line and transformer protection (back-up protection) in electrical power supply systems with single-ended supply. They offer overcurrent protection and overcurrent protection functions according to IEC and ANSI. The comfortable operation via DIP switch is self-explanatory and simple. 1 2 • Two-stage time-overcurrent protection LSP3.01-0005.
Introduction 1 2 3 4 5 6 7 8 9 10 1/10 SIPROTEC Compact · SIEMENS SIP 3.
Protection Systems SIPROTEC Compact
Protection Systems – SIPROTEC Compact Seite 1 2 3 SIPROTEC Compact selection table 2/3 SIPROTEC Compact system features 2/4 Operation 2/6 Construction and hardware 2/7 Control and automation functions 2/8 Operating programs DIGSI 4 and SIGRA 4 2/9 Communication 2/12 4 5 6 7 8 9 10 2/2 SIPROTEC Compact · SIEMENS SIP 3.
Protection Systems – SIPROTEC Compact Voltage and frequency protection Feeder protection 7SJ81 7SK80 7SK81 7RW80 7SC80 basic optional – not available 1) in preparation C C C C C C – – – – – – – – – – – V C C 1) – V – – – – – – – – – – – – V V V – – – V C V C C C C V C C C V C C C C C V V V V V V C V C C C C V C C C V Generator and motor protection 7SJ80 C Line differential protection 7SD80 C V Overcurrent and feeder protection SIPROTEC Compact selection table 1 S
Protection Systems – SIPROTEC Compact SIPROTEC Compact system features 1 Field devices in energy distribution systems and in industrial applications must cover the most varying tasks, and yet be adjustable easily and at short notice.
Protection Systems – SIPROTEC Compact SIPROTEC Compact system features Feeder Protection SIPROTEC 7SC80 Load Balancing The Feeder Automation device SIPROTEC 7SC80 is designed for decentralized as well as for centralized feeder automation applications. This solution allows various flexible high speed applications like Balance the load within a feeder by moving the disconnection.
Protection Systems – SIPROTEC Compact Operation Local operation 1 2 All operations and information can be executed via an integrated user interface: 2 operation LEDs In an illuminated 6-line LC display, process and device information can be indicated as text in different lists. 4 navigation keys 3 8 freely programmable LEDs serve for indication of process or device information. The LEDs can be labeled user-specifically. The LED reset key resets the LEDs. 4 6 7 Numerical operation keys LSP2899.
Protection Systems – SIPROTEC Compact Construction and hardware Connection techniques and housing with many advantages Fig. 2/5 7SK80, 7SJ80, 7SD80 rear view LSP3.01-0034.eps All binary inputs are independent and the pick-up thresholds are settable using software settings (3 stages). The relay current transformer taps (1 A / 5 A) are new software settings. Up to 9 function keys can be programmed for predefined menu entries, switching sequences, etc.
Protection Systems – SIPROTEC Compact Control and automation functions 1 2 Control Assignment of feedback to command In addition to the protection functions, SIPROTEC Compact units also support all control and monitoring functions that are required for operating medium-voltage or highvoltage substations. The status of primary equipment or auxiliary devices can be obtained from auxiliary contacts and communicated to the unit via binary inputs.
Protection Systems – SIPROTEC Compact Operating programs DIGSI 4 and SIGRA 4 DIGSI 4, an operating software for all SIPROTEC protection devices The PC operating program DIGSI 4 is the user interface to the SIPROTEC devices, regardless of their version. It is designed with a modern, intuitive user interface. With DIGSI 4, SIPROTEC devices are configured and evaluated – it is the tailored program for industrial and energy distribution systems. 1 2 3 4 5 6 7 8 9 Fig.
Protection Systems – SIPROTEC Compact Operating programs DIGSI 4 and SIGRA 4 Simple protection setting From the numerous protection functions it is possible to easily select only those which are really required (see Fig. 2/13). This increases the clearness of the other menus. 1 2 Device setting with primary or secondary values Assignment matrix The DIGSI 4 matrix shows the user the complete configuration of the device at a glance (Fig. 2/14).
Protection Systems – SIPROTEC Compact Operating programs DIGSI 4 and SIGRA 4 CFC: Projecting the logic instead of programming 1 With the CFC (continuous function chart), it is possible to link and derive information without software knowledge by simply drawing technical processes, interlocks and operating sequences. 2 Logical elements such as AND, OR, timers, etc., as well as limit value requests of measured values are available (Fig. 2/16). Special attention has been paid to commissioning.
Protection Systems – SIPROTEC Compact Communication 1 2 Communication System interface protocols (retrofittable) As regards communication, the devices offer high flexibility for the connection to industrial and energy automation standards. The concept of the communication modules running the protocols enables exchangeability and retrofittability. Thus, the devices can also be perfectly adjusted to a changing communication infrastructure in the future, e.g.
Protection Systems – SIPROTEC Compact Communication • IEC 60870-5-103 The IEC 60870-5-103 protocol is an international standard for the transmission of protective data and fault recordings. All messages from the unit and also control commands can be transferred by means of published, Siemens-specific extensions to the protocol. Optionally, a redundant IEC 60870-5-103 module is available. This redundant module allows to read and change individual parameters.
Protection Systems – SIPROTEC Compact Communication System solutions 1 IEC 60870 2 Substation control system Due to the standardized interfaces, SIPROTEC devices can also be integrated into systems from other manufacturers, or into a SIMATIC system. Electrical RS485 or optical interfaces are available. Optoelectronic converters enable the optimal selection of transmission physics.
Protection Systems – SIPROTEC Compact Communication System solution (continued) Operating and monitoring Telecontrol interface to system control centers (e.g. IEC60870-5-104) 1 Time syncronization DCF77, GPS Substation controller Max. 12 temperature sensor e.g. 2 RJ45 Station bus RTD box 1) 1) 1) 3 1) 4 7SK80 7SK80 7SK80 7SK80 DIGSI 4 Telecontrol via modem DIGSI LSA4868b-en.ai DIGSI 5 DIGSI 4 (Local for IBS) Fig. 2/22 System solution/communication s Max.
Protection Systems – SIPROTEC Compact 1 2 3 4 5 6 7 8 9 10 2/16 SIPROTEC Compact · SIEMENS SIP 3.
Line Differential Protection 7SD80 SIPROTEC Compact
Line Differential Protection SIPROTEC 7SD80 Page 1 2 3 Description 3/3 Function overview 3/4 Applications 3/5 Application sheets 3/6 Application examples 3/9 Selection and ordering data 3/12 Connection diagrams 3/14 Connection examples 3/20 4 5 6 7 8 9 10 You will find a detailed overview of the technical data (extract of the manual) under: http://www.siemens.com/siprotec 3/2 SIPROTEC Compact · SIEMENS SIP 3.
Line Differential Protection SIPROTEC 7SD80 Description Description The line differential protection SIPROTEC 7SD80 has been conceived for selective line protection of power cables and overhead lines up to 24km for all kind of starpoint configurations. 2 3_2_LSP3.01-0008.eps The implemented phase comparison algorithm is a fast and stable method for line protection in industry and distribution grids.
Line Differential Protection SIPROTEC 7SD80 Function overview 1 2 Protection functions IEC ANSI No.
Line Differential Protection SIPROTEC 7SD80 Applications The SIPROTEC 7SD80 is a numerical line differential protection relay, which in addition to its main function, the selective protection of overhead lines and cables, also covers control and monitoring tasks. Line protection SIPROTEC 7SD80 devices are suitable as selective line protection for application in high-voltage and medium-voltage systems of all types of neutral designs (solid, low-resistance or high-resistance earthed, isolated or compensated).
Line Differential Protection SIPROTEC 7SD80 Application sheets Protection functions 1 2 3 4 5 6 7 Differential protection (ANSI 87L, 87N L, 87Ns L) The differential protection SIPROTEC 7SD80 consists of two separately operating differential protection algorithms: • Phase comparison protection (PCP) • Earth-fault differential protection (EFD). The phase comparison protection, PCP, offers a safe and robust short-circuit protection for all types of neutral treatment.
Line Differential Protection SIPROTEC 7SD80 Application sheets Trip circuit supervision (ANSI 74TC) Undervoltage protection (ANSI 27) One or two binary inputs can be used for monitoring the circuit-breaker trip coil including its incoming cables. An alarm signal is generated whenever the circuit is interrupted. The two-element undervoltage protection provides protection against dangerous voltage drops (especially for electric machines).
Line Differential Protection SIPROTEC 7SD80 Application sheets Local measured values Measured values of protection data communication 1 The r.m.s. values are calculated from the acquired current and voltage along with the power factor as well as cos ϕ, frequency, active and reactive power. The following functions are available for measured value processing: Extensive measured values serve for the monitoring of the quality and the availability of the used protection data communication connections.
Line Differential Protection SIPROTEC 7SD80 Application examples Radial feeder Infeed 52 I> 1.2 IN; TI> = 1.2 s 1 52 7SJ80 7SD80 2 ˂, I> Here, using the line differential protection SIPROTEC 7SD80 is a simple remedy. This relay clears faults between the substations selectively and instantaneously, thus reducing the maximum fault clearance time of the radial feeder. Protection Data Interface Station A 7SD80 ˂, Station A 52 Station A Load I> 1.2 IN; TI> = 0.9 s 52 I> 1.2 IN; TI> = 0.
Line Differential Protection SIPROTEC 7SD80 Applications examples Parallel feeder As a difference to the alternative concept of the direction comparison protection, SIPROTEC 7SD80 does not require voltage transformers. 2 Infeed 52 7SD80 In addition, the shorter fault clearance time prevents damage to the generators at the opposite end.
Line Differential Protection SIPROTEC 7SD80 Application examples Ring feeder Common alternative protection concepts are mostly based on the use of directional time-overcurrent protection, which on the other hand also requires voltage transformers in the substations. An inverse grading of these directional definite timeovercurrent protection devices, however, leads to long fault clearance times.
Line Differential Protection SIPROTEC 7SD80 Selection and ordering data Product description Order No. Short code 12345 6 7 1 7SD80 8 9 10 11 12 13 14 15 16 17 18 19 - - + Housing 1/6 19”, binary inputs and outputs, 1 life contact 2 4 x I, 3 BI, 5 BO (Incl. 2 changeover / Form C), prot. data interface FO for mono- (24 km) and multimode (4 km), LC-duplex connector 1 4 x I, 7 BI, 8 BO (Incl. 2 changeover / Form C), prot.
Line Differential Protection SIPROTEC 7SD80 Selection and ordering data ANSI No. Variants Order No. Bestell-Nr.
Line Differential Protection SIPROTEC 7SD80 Connection diagrams 1 Surface / flush-mounting housing IA F1 F2 F3 F4 F5 F6 F7 F8 C11 C10 C9 BO2 C14 C12 C13 BO3 E1 E2 E3 E4 E5 E6 IC I N, INS BO4 3 BO5 4 C3 C4 C5 C6 C7 C8 5 BI1 BI2 BI3 Life Contact E10 E7 E8 = (~) Power Supply = 6 + - C1 C2 Port B e.g. System interface 3_8_Visio-kl-uebers-7sd80-1-100801-us.
Line Differential Protection SIPROTEC 7SD80 Connection diagrams 1 Surface / flush-mounting housing IA F1 F2 F3 F4 F5 F6 F7 F8 IB BO1 C11 C10 C9 BO2 C14 C12 C13 BO3 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 IC I N, INS BO4 BO5 BO6 BO7 C3 C4 C5 C6 C7 C8 BI1 D1 D2 D3 D4 D5 D6 D7 D8 BI4 BO8 BI2 BI3 Life Contact 3 4 E10 E7 E8 = BI5 2 (~) Power Supply = + - 5 C1 C2 6 BI6 Port A FO-Protection Data Interface USB-DIGSI-Interface Grounding on the case B A 7 Interference Suppress
Line Differential Protection SIPROTEC 7SD80 Connection diagrams 1 Surface / flush-mounting housing IA F1 F2 F3 F4 F5 F6 F7 F8 C11 C10 C9 BO2 C14 C12 C13 BO3 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 IC I N, INS BO4 3 BO5 BO6 4 BO7 C3 C4 C5 C6 C7 C8 5 BI1 BO8 BI2 BI3 D1 D2 D5 D7 D6 D8 Cu-Protection Data Interface = BI4 BI5 3_10_Visio-kl-uebers-7sd80-4-100801-us.pdf 6 7 8 E10 E7 E8 Life Contact (~) Power Supply = + C1 C2 - Port B e.g.
Line Differential Protection SIPROTEC 7SD80 Connection diagrams 1 Surface / flush-mounting housing IA F1 F2 F3 F4 F5 F6 F7 F8 IB BO1 C1 1 C10 C9 BO2 C1 4 C12 C13 2 BO3 E1 E2 E3 E4 E5 E6 3 IC I N, INS BO4 E9 Q2 E11 E12 E13 E14 VA VB BO5 VC C3 C4 C5 C6 C7 C8 4 BI1 BI2 BI3 = + C1 C2 - Port B e.g. System interface Port A FO-Protection Data Interface USB-DIGSI-Interface Grounding on the case 6 B A 7 Interference Suppression Capacitors at the Relay Contacts, Ceramic, 2.
Line Differential Protection SIPROTEC 7SD80 Connection diagrams 1 Surface / flush-mounting housing IA F1 F2 F3 F4 F5 F6 F7 F8 4 5 I N, INS 7 8 C14 C12 C13 BO3 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 BO4 VA VB BO5 VC BO6 BO7 C3 C4 C5 C6 C7 C8 BI1 D1 D2 D3 D4 D5 D6 D7 D8 BI4 BO8 BI2 BI3 Life Contact E10 E7 E8 = BI5 (~) Power Supply = BI7 - C1 C2 Port B e.g.
Line Differential Protection SIPROTEC 7SD80 Connection diagrams 1 Surface / flush-mounting housing IA F1 F2 F3 F4 F5 F6 F7 F8 IB BO1 C1 1 C10 C9 BO2 C1 4 C12 C13 BO3 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 IC I N, INS BO4 E9 Q2 E11 E12 E13 E14 VA VB BO5 VC BO6 BO7 C3 C4 C5 C6 C7 C8 BI1 BO8 BI2 2 3 4 BI3 D1 D2 D5 D7 D6 D8 5 E10 E7 E8 Life Contact Cu-Protection Data Interface 3_13_Visio-kl-uebers-7sd803-4-100801-us.pdf BI5 (~) Power Supply = + C1 C2 - Port B e.g.
Line Differential Protection SIPROTEC 7SD80 Connection examples Current transformer connection 52 2 52 52 Surface-/Flush Mounting Housing P2 S2 P1 S1 A 3 B F1 IA F2 F3 IB F4 F5 IC F6 F7 C IN F8 3_14_SIP C-0007-us.pdf 1 SIPROTEC Fig.
Line Differential Protection SIPROTEC 7SD80 Connection examples Voltage transformer connection 52 52 Surface-/Flush Mounting Housing 52 A E9 VA E11 VB B E12 a A B b VC E13 E14 SIPROTEC C 1 3_17_Visio-anschl-u1e-u2e-u3e-abgang-20070129-us.pdf A B C 2 3 Fig. 3/17 Example for connection type “V1E, V2E, V3E”, feeder-side voltage connection 4 A B C 52 Surface-/Flush Mounting Housing 52 A B E9 VA E11 VB E12 da dn E13 E14 VC SIPROTEC A B 5 3_18_SIP C-0009-us.
Line Differential Protection SIPROTEC 7SD80 1 2 3 4 5 6 7 8 9 10 3/22 SIPROTEC Compact · SIEMENS SIP 3.
Overcurrent Protection 7SJ80 SIPROTEC Compact
Overcurrent Protection SIPROTEC 7SJ80 Page 1 2 3 4 Description 4/3 Function overview 4/4 Applications 4/5 Application sheets 4/6 Application examples 4/12 Selection and ordering data 4/18 Connection diagrams 4/21 Connection examples 4/27 Connection types 4/30 5 6 7 8 9 10 You will find a detailed overview of the technical data (extract of the manual) under: http://www.siemens.com/siprotec 4/2 SIPROTEC Compact · SIEMENS SIP 3.
Overcurrent Protection SIPROTEC 7SJ80 Description Description The SIPROTEC 7SJ80 relays can be used for line/feeder protection of high and medium-voltage networks with grounded, low-resistance grounded, isolated or a compensated neutral point. The relays have all the required functions to be applied as a backup relay to a transformer differential relay. 1 The SIPROTEC 7SJ80 features “flexible protection functions”. Up to 20 additional protection functions can be created by the user.
Overcurrent Protection SIPROTEC 7SJ80 Function overview Protection functions 1 2 IEC ANSI No.
Overcurrent Protection SIPROTEC 7SJ80 Applications The SIPROTEC 7SJ80 perform control and monitoring functions and therefore provide the user with a cost-effective platform for power system management, that ensures reliable supply of electrical power to the customers. The ergonomic design makes control easy from the relay front panel. A large, easy-to-read display was a key design factor.
Overcurrent Protection SIPROTEC 7SJ80 Application sheets Protection functions 1 2 3 Directional time-overcurrent protection (ANSI 67, 67N) Overcurrent protection (ANSI 50, 50N, 51, 51N, 51V) This function is based on the phase selective measurement of the three phase currents and the ground current (four transformers). Three definite time-overcurrent protection elements (DMT) are available both for the phase and the ground elements. The current threshold and the delay time can be set in a wide range.
Overcurrent Protection SIPROTEC 7SJ80 Application sheets (Sensitive) directional ground-fault detection (ANSI 59N, 67Ns, 67N) (contin.) It has the following functions: • TRIP via the displacement voltage VE • Two instantaneous elements or one instantaneous plus one user-defined characteristic • Each element can be set to forward, reverse or nondirectional • The function can also be operated in the insensitive mode as an additional short-circuit protection.
Overcurrent Protection SIPROTEC 7SJ80 Application sheets 1 2 3 4 5 6 The high-impedance measurement principle is a simple and sensitive method to detect ground faults, especially on transformers. It can also be used on motors, generators and reactors when they are operated on a grounded network. When applying the high-impedance measurement principle, all current transformers in the protected area are connected in parallel and operated through one common resistor of relatively high R.
Overcurrent Protection SIPROTEC 7SJ80 Application sheets Synchrocheck, synchronizing function (ANSI 25) Undervoltage protection (ANSI 27) When closing a circuit-breaker, the units can check whether two separate networks are synchronized. Voltage-, frequency- and phase-angle-differences are checked to determine whether synchronous conditions exist. The two-element undervoltage protection provides protection against dangerous voltage drops (especially for electric machines).
Overcurrent Protection SIPROTEC 7SJ80 Application sheets Further functions 1 Measured values The r.m.s. values are calculated from the acquired current and voltage along with the power factor, frequency, active and reactive power.
Overcurrent Protection SIPROTEC 7SJ80 Application sheets Commissioning Commissioning could not be easier and is supported by DIGSI 4. The status of the binary inputs can be read individually and the state of the binary outputs can be set individually. The operation of switching elements (circuit-breakers, disconnect devices) can be checked using the switching functions of the relay. The analog measured values are represented as wide-ranging operational measured values.
Overcurrent Protection SIPROTEC 7SJ80 Application examples Radial systems General hints: The relay at the far end (D) from the infeed has the shortest tripping time. Relays further upstream have to be time-graded against downstream relays in steps of about 0.3 s.
Overcurrent Protection SIPROTEC 7SJ80 Application examples Ring-main cable For lines with infeed from two sources, no selectivity can be achieved with a simple definite-time overcurrent protection. Therefore, the directional definite-time overcurrent protection must be used. A nondirectional definite-time overcurrent protection is enough only in the corresponding busbar feeders. The grading is done from the other end respectively.
Overcurrent Protection SIPROTEC 7SJ80 Application examples Busbar protection by overcurrent relays with reverse interlocking 1 Infeed Applicable to distribution busbars without substantial (< 0.25 x IN) backfeed from the outgoing feeders. Reverse interlocking I>>t0 2 50/50N 52 51/51N t0 = 50 ms Busbar 52 52 I>> I>t I>> I>t I>> I>t 50/50N 51/51N 50/50N 51/51N 50/50N 51/51N 4 Fig.
Overcurrent Protection SIPROTEC 7SJ80 Application examples Automatic reclosing Reverse power protection with parallel infeeds If a busbar is supplied by two parallel infeeds and there is a fault in one of the infeeds, the affected busbar shall be selectively shut down, so that supply to the busbar is still possible through the remaining infeed. To do this, directional devices are required, which detect a short circuit from the busbar towards the infeed.
Overcurrent Protection SIPROTEC 7SJ80 Application examples Synchrocheck 2 3 Busbar V2 52 Closing Signal 1 Transformer Local/remote control VT1 1) 2 25 SYN 2) 81 G Infeed 1) 2) 4 4_16_LSA4114-us.pdf Where two system sections are interconnected, the synchrocheck determines whether the connection is permissible without danger to the stability of the power system. In the example, load is supplied from a generator to a busbar through a transformer.
Overcurrent Protection SIPROTEC 7SJ80 Application examples Undervoltage-controlled reactive power protection (QV Protection) This ensures that generating units disconnect from the power system which additionally burden the power system during a short circuit or prevent that the power system is restored when connecting after a short circuit. The monitoring of the voltage support also fulfills this function.
Overcurrent Protection SIPROTEC 7SJ80 Selection and ordering data Product description 1 Order No. Short code 12345 6 7 Overcurrent Protection 7SJ80 V4.
Overcurrent Protection SIPROTEC 7SJ80 Selection and ordering data ANSI No. Product description Order No. Bestell-Nr. Short code 12345 6 7 Overcurrent Protection 7SJ80 V4.
Overcurrent Protection SIPROTEC 7SJ80 Selection and ordering data ANSI No. Product description Order No. Bestell-Nr. Short code 12345 6 7 1 Overcurrent Protection 7SJ80 V4.
Overcurrent Protection SIPROTEC 7SJ80 Connection diagrams 1 IA F1 F2 F3 F4 F5 F6 F7 F8 I B, IN2 BO1 C11 C9 C10 BO2 C14 C13 C12 2 BO3 E1 E2 E3 E4 E5 E6 3 IC I N, INS BO4 BO5 C3 C4 C5 C6 C7 C8 4 BI1 BI2 Life Contact E10 E8 E7 = (~) Power Supply = + - C1 C2 6 Port B e.g. System interface Port A Ethernet interface 4_19_LSA4784us.pdf USB-DIGSI-Interface Grounding on the case 5 B A 7 Interference Suppression Capacitors at the Relay Contacts, Ceramic, 2.2 nF, 250 V BI3 8 Fig.
Overcurrent Protection SIPROTEC 7SJ80 Connection diagrams 1 IA F1 F2 F3 F4 F5 F6 F7 F8 C11 C9 C10 BO2 C14 C13 C12 BO3 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 IC I N, INS BO4 3 BO5 BO6 4 5 6 BO7 C3 C4 C5 C6 C7 C8 BI1 D1 D2 D3 D4 D5 D6 D7 D8 BI4 BO8 BI2 BI3 E10 E8 E7 Life Contact = BI5 (~) Power Supply = BI7 7 C1 C2 Port B e.g. System interface 4_20_LSA4785us.pdf USB-DIGSI-Interface Grounding on the case Fig.
Overcurrent Protection SIPROTEC 7SJ80 Connection diagrams 1 IA F1 F2 F3 F4 F5 F6 F7 F8 I B, IN2 BO1 C1 1 C9 C10 BO2 C1 4 C13 C12 2 BO3 E1 E2 E3 E4 E5 E6 3 IC I N, INS BO4 E9 Q2 E11 E12 E13 E14 VA, VAB, Vph-n VB, VBC BO5 VC, VN, Vsyn, VX C3 C4 C5 C6 C7 C8 4 BI1 BI2 BI3 = + - C1 C2 6 Port B e.g. System interface Port A Ethernet interface USB-DIGSI-Interface Grounding on the case B A 7 Interference Suppression Capacitors at the Relay Contacts, Ceramic, 2.
Overcurrent Protection SIPROTEC 7SJ80 Connection diagrams 1 IA F1 F2 F3 F4 F5 F6 F7 F8 4 5 6 BO2 C1 4 C13 C12 BO3 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 IC I N, INS BO4 E9 Q2 E11 E12 E13 E14 3 C1 1 C9 C10 VA, VAB, Vph-n VB, VBC BO5 VC, VN, Vsyn, VX BO6 BO7 C3 C4 C5 C6 C7 C8 BI1 D1 D2 D3 D4 D5 D6 D7 D8 BI4 BO8 BI2 BI3 E10 E8 E7 Life Contact = BI5 (~) Power Supply = BI7 7 C1 C2 Port B e.g. System interface 4_22_LSA4787us.pdf USB-DIGSI-Interface Grounding on the case Fig.
Overcurrent Protection SIPROTEC 7SJ80 Connection diagrams 1 IA I B, IN2 BO1 C1 1 C9 C10 BO2 C1 4 C13 C12 2 BO3 E1 E2 E3 E4 E5 E6 3 IC I N, INS BO4 4_23_Visio-kl-uebers-7sx807-us.pdf BO5 C3 C4 C5 C6 C7 C8 BI1 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 BI4 4 BI2 BI3 = BI5 5 E10 E8 E7 Life Contact (~) Power Supply = + - C1 C2 6 BI6 BI7 Port B e.g.
Overcurrent Protection SIPROTEC 7SJ80 Connection diagrams 1 2 E9 Q2 E11 E12 E13 E14 3 4 5 6 4_24_Visio-kl-uebers-7sx808-us.pdf 7 8 IA I B, IN2 BO1 C1 1 C9 C10 BO2 C1 4 C13 C12 BO3 E1 E2 E3 E4 E5 E6 IC I N, INS BO4 VA, VAB, Vph-n VB, VBC BO5 VC, VN, Vsyn, VX C3 C4 C5 C6 C7 C8 BI1 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 BI4 BI2 BI3 E10 E8 E7 Life Contact = BI5 (~) Power Supply = - C1 C2 BI6 BI7 Port B e.g.
Overcurrent Protection SIPROTEC 7SJ80 Connection examples Connection of current and voltage transformers Standard connection 52 52 52 Surface-/Flush Mounting Housing P2 S2 P1 S1 A B F1 IA F2 F3 IB F4 F5 IC F6 IN F7 2 4_25_LSA4789-en.pdf For grounded networks, the ground current is obtained from the phase currents by the residual current circuit. 1 A B C F8 SIPROTEC C 3 Fig.
Overcurrent Protection SIPROTEC 7SJ80 Connection examples Connection for compensated networks 2 3 A B C A B da dn a b Surface-/Flush Mounting Housing 52 52 52 E9 VA-B E11 VC-B E12 E13 VN E14 F1 F3 F5 4 L l K k A 5 B C L l K k F8 IA LSA4792a-en.pdf 1 The figure shows the connection of two phase-to-ground voltages and the VE voltage of the broken delta winding and a phase-balance neutral current transformer for the ground current.
Overcurrent Protection SIPROTEC 7SJ80 Connection examples Connection for the synchrocheck function 52 52 52 A B 1 a b Surface-/Flush Mounting Housing E9 A a B A b a B b E11 F1 F3 l K k A B C 2 E12 E14 E13 L VA-B VC-B VSyn IA IB 3 F2 F4 F5 IC F8 F7 IN F8 4_30_LSA4858-en.pdf If no directional earth-fault protection is used, connection can be done with just two phase current transformers.
Overcurrent Protection SIPROTEC 7SJ80 Connection types Overview of connection types 1 2 3 4 Type of network Function Current connection Voltage connection (Low-resistance) grounded networks Time-overcurrent protection phase/ground non-directional Residual circuit, with 3 phasecurrent transformers required, phase-balance neutral current transformers possible – (Low-resistance) grounded networks Sensitive ground-fault protection Phase-balance neutral current transformers required – Isolated or c
SIPROTEC Compact Overcurrent Protection 7SJ81 for Low-Power CT and VT Applications
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications Page 1 2 3 Description 5/3 Function overview 5/4 Applications 5/5 Application sheets 5/6 Application examples 5/12 Selection and ordering data 5/14 Connection diagrams 5/16 Connection examples 5/20 4 5 6 7 8 9 10 You will find a detailed overview of the technical data (extract of the manual) under: http://www.siemens.com/siprotec 5/2 SIPROTEC Compact · SIEMENS SIP 3.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Description Description The SIPROTEC 7SJ81 provides 4 low-power current transformer inputs and optionally 3 low-power voltage transformer inputs. With the same low-power current transformer (LPCT) a wide range of primary rated line currents can be covered. Objects with rated currents in the range of 40 A to 5000 A can be protected when using low-power current transformers.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Function overview Protection functions 1 2 3 IEC ANSI No.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications– Applications Operational indications The SIPROTEC 7SJ81 unit is a numerical protection with low power CT and VT inputs. The device performs control and monitoring functions and therefore provides the user with a cost-effective platform for power system management, that ensures reliable supply of electrical power to the customers. The ergonomic design makes control easy from the relay front panel.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Application sheets Protection functions 1 2 Directional time-overcurrent protection (ANSI 67, 67N) Overcurrent protection (ANSI 50, 50N, 51, 51N) This function is based on the phase-selective measurement of the three phase currents and the ground current (four transformers). Three definite time-overcurrent protection elements (DMT) are available both for the phase and the ground elements.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Application sheets It has the following functions: • TRIP via the displacement voltage VE • Two instantaneous elements or one instantaneous plus one user-defined characteristic. • Each element can be set to forward, reverse or non-directional. • The function can also be operated in the insensitive mode as an additional short-circuit protection. circuit.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Application sheets 1 2 3 Protection functions/stages available are based on the available measured analog quantities: Function ANSI I>, IE> 50, 50N V<, V>, VE> 27, 59, 59N 3I0>, I1>, I2>, I2 / I1>, 3V0>, V1> <, V2 > < 50N, 46, 59N, 47 P> <, Q> < 32 cos ϕ 55 f>< 81O, 81U df / dt > < 81R The two-element undervoltage protection provides protection against dangerous voltage drops (especially for electric machines).
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Application sheets Futher Functions The devices also offer a new method for determining the remaining service life: Measured values • Two-point method. The r.m.s. values are calculated from the acquired current and voltage along with the power factor, frequency, active and reactive power.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Application examples Radial systems 1 General hints: The relay at the far end (D) from the infeed has the shortest tripping time. Relays further upstream have to be time-graded against downstream relays in steps of about 0.3 s.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Application examples Ring-main cable For lines with infeed from two sources, no selectivity can be achieved with a simple definite-time overcurrent protection. Therefore, the directional definite-time overcurrent protection must be used. A nondirectional definite-time overcurrent protection is enough only in the corresponding busbar feeders. The grading is done from the other end respectively.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Application examples Busbar protection by overcurrent relays with reverse interlocking 1 Infeed Applicable to distribution busbars without substantial (< 0.25 x IN) backfeed from the outgoing feeders. Reverse interlocking I>>t0 2 50/50N 52 51/51N t0 = 50 ms Busbar 52 52 52 I>> I>t I>> I>t I>> I>t 50/50N 51/51N 50/50N 51/51N 50/50N 51/51N 4 Fig.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Application examples Automatic reclosing Stage can be blocked 52 1 Stage get slower executes the than the fuse or reclosing for lower protection the hole feeder devices graduated 2 ON 52 52 TRIP I>, I>>, I>>> I>t, I>>t, Ip 50 Visio-LSA2219c-us.pdf The auto-reclosure function (AR) has starting and blocking options.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Selection and ordering data Description 1 Order No.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Selection and ordering data Description Order No.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Connection diagrams 2 F1 IA F2 IB F3 IC F4 IN, INS BO1 C11 C9 C10 BO2 C14 C13 C12 BO3 E1 E2 E3 E4 E5 E6 BO4 BO5 3 C3 C4 C5 C6 C7 C8 4 BI1 BI2 BI3 Life Contact E 10 E8 E7 5 = (~) Power Supply = 6 + - C1 C2 Port B e.g. System interface Port A Ethernet interface 5_15_Visio-Figure-14-us.pdf 7 8 USB-DIGSI-Interface Grounding on the case Fig.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Connection diagrams F1 IA F2 IB F3 IC F4 IN, INS BO1 C11 C9 C10 BO2 C14 C13 C12 BO3 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 BO4 BO5 BO6 BO7 C3 C4 C5 C6 C7 C8 BI1 D1 D2 D3 D4 D5 D6 D7 D8 BI4 BO8 BI2 BI3 2 3 4 E10 E8 E7 Life Contact = BI5 1 (~) Power Supply = + - 5 C1 C2 BI6 Port B e.g. System interface 5_16_Visio-Figure-15-us.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Connection diagrams F1 IA VA-N IB VB-N IC VC-N IN, INS F2 2 F3 F4 BO1 C11 C9 C10 BO2 C14 C13 C12 BO3 E1 E2 E3 E4 E5 E6 BO4 BO5 3 C3 C4 C5 C6 C7 C8 4 BI1 BI2 BI3 E10 E8 E7 Life Contact 5 = (~) Power Supply = 6 + - C1 C2 Port B e.g. System interface Port A Ethernet interface 5_17_Visio-Figure-16-us.pdf 7 8 USB-DIGSI-Interface Grounding on the case Fig.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Connection diagrams F1 IA VA-N IB VB-N IC VC-N IN, INS F2 F3 F4 BO1 C1 1 C9 C10 BO2 C14 C13 C12 BO3 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 BO4 BO5 BO6 BO7 C3 C4 C5 C6 C7 C8 BI1 D1 D2 D3 D4 D5 D6 D7 D8 BI4 BO8 BI2 1 2 3 4 BI3 E10 E8 E7 Life Contact = BI5 (~) Power Supply = + - 5 C1 C2 BI6 Port B e.g. System interface Port A Ethernet interface Visio-Figure-17-us.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Connection example Standard connection capabilities 52 52 52 Flush Mounting Housing F1 F2 2 F3 F4 LPCT LPCT LPCT A B IA IB IC IN C SIPROTEC 3 5_19_Visio-SIP0023us.pdf 1 Fig. 5/19 Connection to three low power CTs, normal circuit layout - appropriate for all networks 4 52 52 52 Flush Mounting Housing F1 F2 6 F3 F4 LPCT LPCT LPCT 7 A B C IA IB IC IN SIPROTEC 5_20_Visio-SIP0023us.pdf 5 LPCT 8 Fig.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Connection example Standard connection capabilities 52 52 1 52 LPCT/LPVT R2 F1 * 1) * R1 Flush Mounting Housing * VA-N IA 2 LPCT/LPVT R2 F2 * 1) * R1 * VB-N IB 3 LPCT/LPVT R2 F3 4 VC-N IC * A B F4 C IN SIPROTEC LPCT * 5_21_Visio-Figure-22-us.pdf 1) * * R1 5 6 1) R1 and R2 represent the primary voltage divider. Important! Cable Shield Grounding must be done on the Cable Side! Fig.
Overcurrent Protection SIPROTEC 7SJ81 for Low-Power CT and VT Applications – Connection example Standard connection capabilities 52 52 52 LPVT R2 1) * R1 Flush Mounting Housing RJ45 Y-Cable * 1 F1 VA-N IA 2 LPVT R2 RJ45 Y-Cable * 1) * R1 F2 VB-N IB LPVT R2 * 1) RJ45 Y-Cable * 3 R1 4 A * * * LPCT LPCT LPCT B F4 C 5_22_Visio-Figure-23-us.pdf F3 VC-N IC IN SIPROTEC 5 * LPCT 1) R1 and R2 represent the primary voltage divider.
Generator and Motor Protection 7SK80 SIPROTEC Compact
Generator and Motor Protection SIPROTEC 7SK80 Page 1 2 3 4 Description 6/3 Function overview 6/4 Applications 6/5 Application sheets 6/6 Application examples 6/12 Selection and ordering data 6/16 Connection diagrams 6/18 Connection examples 6/24 Connection types 6/27 5 6 7 8 9 10 You will find a detailed overview of the technical data (extract of the manual) under: http://www.siemens.com/siprotec 6/2 SIPROTEC Compact · SIEMENS SIP 3.
Generator and Motor Protection SIPROTEC 7SK80 Description Description The SIPROTEC 7SK80 is a multi-functional motor protection relay. It is designed for protection of asynchronous motors of all sizes. The relays have all the required functions to be applied as a backup relay to a transformer differential relay. 1 The SIPROTEC 7SK80 features “flexible protection functions”. Up to 20 additional protection functions can be created by the user. 2 7SK80_W3_de_en.
Generator and Motor Protection SIPROTEC 7SK80 Function overview 1 2 Protection functions IEC ANSI Definite and inverse time-overcurrent protection (phase / ground) I>, I>>, I>>>, IE>, IE>>, IE>>>; Ip, IEp 50, 50N; 51, 51N Directional time-overcurrent protection, ground IE dir>, IE dir>>, IEp dir 67N Directional overcurrent protection, ground (definite / inverse) IEE>, IEE>>, IEEp 67Ns, 50Ns Displacement voltage, zero-sequence voltage V E, V 0> 59N Trip-circuit supervision AKU 74TC Underc
Generator and Motor Protection SIPROTEC 7SK80 Applications are stored in the relay to provide the user or operator with all the key data required to operate modern substations. The SIPROTEC 7SK80 unit is a numerical motor protection relay that can perform control and monitoring functions and therefore provide the user with a cost-effective platform for power system management, that ensures reliable supply of electrical power to the customers.
Generator and Motor Protection SIPROTEC 7SK80 Application sheets 1 2 3 4 5 Protection functions Directional overcurrent protection, ground (ANSI 67N) Overcurrent protection (ANSI 50, 50N, 51, 51N, 51V) Directional ground protection is a separate function. It operates in parallel to the non-directional ground overcurrent elements. Their pickup values and delay times can be set separately. Definite-time and inverse-time characteristics aroffered.
Generator and Motor Protection SIPROTEC 7SK80 Application sheets The normal ground fault protection is not capable of reliably detecting and clearing the sometimes very short current pulses. The required selectivity for intermittent ground faults is achieved by summing up the times of the individual pulses and tripping after a (programmable) summation time has been reached. The pickup threshold Iie> evaluates RMS values referred to 1 system period.
Generator and Motor Protection SIPROTEC 7SK80 Application sheets 2 3 Trip circuit supervision (ANSI 74TC) SIPROTEC 7SK80 enables the user to easily add up to 20 additional protection functions. Parameter definitions are used to link standard protection logic with any chosen characteristic quantity (measured or calculated quantity). The standard logic consists of the usual protection elements such as the pickup set point, the set delay time, the TRIP command, a block function, etc.
Generator and Motor Protection SIPROTEC 7SK80 Application sheets Motor protection 1 Restart inhibit (ANSI 66 / 86) If a motor is subjected to many successive starts, the rotor windings or rotor bars can be heated up to a point where the electrical connections between the rotor bars and the end rings are damaged. As it is not possible to physically measure the heat of the rotor we need to determine the heat by measuring the current the rotor is drawing through the stator to excite the rotor.
Generator and Motor Protection SIPROTEC 7SK80 Application sheets 1 2 Load jam protection (ANSI 51M) Frequency protection (ANSI 81O / U) Load jam is activated when a sudden high load is applied to the motor because of mechanical failure of a pump for example. The sudden rise in current is detected by this function and can initiate an alarm or a trip. The overload function is too slow and thus not suitable Frequency protection can be used for overfrequency and underfrequency protection.
Generator and Motor Protection SIPROTEC 7SK80 Application sheets Metered values For internal metering, the unit can calculate an energy metered value from the measured current and voltage values. If an external meter with a metering pulse output is available, the 7SK80 can obtain and process metering pulses through an indication input. The metered values can be displayed and passed on to a control center as an accumulated value with reset.
Generator and Motor Protection SIPROTEC 7SK80 Application examples Radial systems General hints: The relay at the far end (D) from the infeed has the shortest tripping time. Relays further upstream have to be time-graded against downstream relays in steps of about 0.3 s.
Generator and Motor Protection SIPROTEC 7SK80 Anwendungsbeispiele Applicable, with effective and low-resistance infeed (IE ≥ IN, Motor), to low-voltage motors and highvoltage motors with low-resistance infeed (IE ≥ IN, Motor) 52 I>, I>>, I>>> IN>t > IStart²t I2> 50 51N 49 48 46 1 6_11_LSA4869-us.pdf Small and medium-sized motors < 1MW 2 M Fig.
Generator and Motor Protection SIPROTEC 7SK80 Application examples Generators up to 1MW Two voltage transformers in V-connection are sufficient. 1 Busbar 52 2 f>< 81 G 51 P> 46-1 PU 49 46 V> 32 6_15_LSA4873-us.pdf I>t 59 IN>t 3 51N 4 Fig. 6/15 Protection concept for small generators Busbar protection by overcurrent relays with reverse interlocking 5 Infeed Reverse interlocking Applicable to distribution busbars without substantial (< 0.25 x IN) backfeed from the outgoing feeders.
Generator and Motor Protection SIPROTEC 7SK80 Application examples Protection of a transformer Busbar High-voltage 1 59-1 PU ,t 59 52 TRIP I>, I>> I>t, I>>t, Ip >t I2>t, I2>>t 50 51 49 46 IN>, IN>> IN>t, IN>>t, INTOC 50N 51N 2 6_18_LSA2203b-us.pdf The high-current stage enables a current grading, the overcurrent stages work as backup protection to subordinate protection devices, and the overload function protects the transformer from thermal overload.
Generator and Motor Protection SIPROTEC 7SK80 Selection and ordering data Product description Order No. Short code 12345 6 7 1 Motor Protection 7SK80 V4.
Generator and Motor Protection SIPROTEC 7SK80 Selection and ordering data ANSI No. Product description Bestell-Nr. Short code Order No. 12345 6 7 Motor Protection 7SK80 V4.
Generator and Motor Protection SIPROTEC 7SK80 Connection diagrams 1 IA F1 F2 F3 F4 F5 F6 F7 F8 C11 C9 C10 BO2 C14 C13 C12 BO3 E1 E2 E3 E4 E5 E6 IC I N, INS BO4 3 BO5 4 C3 C4 C5 C6 C7 C8 5 BI1 BI2 BI3 Life Contact E10 E8 E7 = (~) Power Supply = 6 + - C1 C2 Port B e.g. System interface 7 Port A Ethernet interface USB-DIGSI-Interface 6_20_LSA4784-us.ai 8 Grounding on the case Fig. 6/20 Motor protection SIPROTEC 7SK801 9 10 6/18 SIPROTEC Compact · SIEMENS SIP 3.
Generator and Motor Protection SIPROTEC 7SK80 Connection diagrams 1 IA F1 F2 F3 F4 F5 F6 F7 F8 I B, IN2 BO1 C11 C9 C10 BO2 C14 C13 C12 BO3 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 IC I N, INS BO4 BO5 BO6 BO7 C3 C4 C5 C6 C7 C8 BI1 D1 D2 D3 D4 D5 D6 D7 D8 BI4 BO8 BI2 BI3 3 4 E10 E8 E7 Life Contact = BI5 2 (~) Power Supply = + - 5 C1 C2 6 BI6 Port B e.g. System interface Port A Ethernet interface 6_21_LSA4785-us.
Generator and Motor Protection SIPROTEC 7SK80 Connection diagrams 1 IA F1 F2 F3 F4 F5 F6 F7 F8 4 I N, INS C14 C13 C12 BO3 E1 E2 E3 E4 E5 E6 BO4 VA, VAB VB, VBC BO5 VC, VN, VX C3 C4 C5 C6 C7 C8 5 BO2 IC E9 E11 E12 E13 E14 3 C11 C9 C10 BI1 BI2 BI3 E10 E8 E7 Life Contact = (~) Power Supply = 6 + - C1 C2 Port B e.g. System interface Port A Ethernet interface 7 6_22_LSA4874a-en.ai USB-DIGSI-Interface 8 Grounding on the case Fig.
Generator and Motor Protection SIPROTEC 7SK80 Connection diagrams 1 IA F1 F2 F3 F4 F5 F6 F7 F8 I B, IN2 BO1 C11 C9 C10 BO2 C1 4 C13 C12 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 2 E10 E8 E7 5 IC BO3 I N, INS BO4 E9 Q2 E11 E12 E13 E14 VA, VAB VB, VBC VC, VN, VX BO5 BO6 BO7 C3 C4 C5 C6 C7 C8 BI1 D1 D2 D3 D4 D5 D6 D7 D8 BI4 BO8 BI2 BI3 Life Contact = BI5 (~) Power Supply = + - 3 4 C1 C2 6 BI6 Port A Ethernet interface 6_23_LSA4875-us.
Generator and Motor Protection SIPROTEC 7SK80 Connection diagrams 1 IA F1 F2 F3 F4 F5 F6 F7 F8 C11 C9 C10 BO2 C1 4 C13 C12 BO3 E1 E2 E3 E4 E5 E6 IC I N, INS BO4 3 BO5 4 C3 C4 C5 C6 C7 C8 5 BI1 E10 E8 E7 Life Contact BI2 = BI3 (~) Power Supply = + C1 C2 - Port B e.g.
Generator and Motor Protection SIPROTEC 7SK80 Connection diagrams 1 E9 E11 E12 E13 E14 C3 C4 C5 C6 C7 C8 IA I B, IN2 BO1 C11 C9 C10 BO2 C1 4 C13 C12 2 BO3 E1 E2 E3 E4 E5 E6 3 E10 E8 E7 4 IC I N, INS BO4 VA, VAB VB, VBC BO5 VC, VN, VX BI1 Life Contact BI2 = BI3 (~) Power Supply = + C1 C2 - Port B e.g.
Generator and Motor Protection SIPROTEC 7SK80 Connection examples Connection of current and voltage transformers Standard connection For grounded networks, the ground current is obtained from the phase currents by the residual current circuit. 2 52 52 52 Surface-/Flush Mounting Housing P2 S2 P1 S1 F1 IA F2 F3 IB F4 F5 IC F6 IN F7 F8 SIPROTEC 3 6_26_LSA4826us.pdf 1 A B C M Fig.
Generator and Motor Protection SIPROTEC 7SK80 Connection examples Connection for compensated networks The figure shows the connection of two phase-to-ground voltages and the V E voltage of the broken delta winding and a phase-balance neutral current transformer for the ground current. This connection maintains maximum precision for directional ground-fault detection and must be used in compensated networks.
Generator and Motor Protection SIPROTEC 7SK80 Connection examples Connection for all types of power systems A directional earth-fault protection is not possible, as the displacement voltage cannot be calculated. 2 A B C 52 52 Surface-/Flush Mounting Housing 52 E9 A a B A b a B b E12 E11 F1 F3 3 L l K k VA-B VC-B IA IB IC F8 F7 IN F8 M Fig. 6/31 Residual circuit with voltage functions (non directional element for phase) 5 6 7 8 9 10 6/26 SIPROTEC Compact · SIEMENS SIP 3.
Generator and Motor Protection SIPROTEC 7SK80 Connection types Overview of connection types Type of network Function Current connection Voltage connection (Low-resistance) grounded networks Overcurrent protection phase / ground non-directional Residual circuit, with 3 phasecurrent transformers required, phase-balance neutral current transformers possible – (Low-resistance) grounded networks Sensitive ground-fault protection Phase-balance neutral current transformers required – Isolated or compen
Generator and Motor Protection SIPROTEC 7SK80 1 2 3 4 5 6 7 8 9 10 6/28 SIPROTEC Compact · SIEMENS SIP 3.
SIPROTEC Compact Generator and Motor Protection 7SK81 for Low-Power CT and VT Applications
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications Page 1 2 3 Description 7/3 Function overview 7/4 Applications 7/5 Application sheets 7/6 Application examples 7/12 Selection and ordering data 7/16 Connection diagrams 7/18 Connection examples 7/24 4 5 6 7 8 9 10 You will find a detailed overview of the technical data (extract of the manual) under: http://www.siemens.com/siprotec 7/2 SIPROTEC Compact · SIEMENS SIP 3.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Description Description The SIPROTEC 7SK81 provides 4 low-power current transformer inputs and optionally 3 low-power voltage transformer inputs. With the same low-power current transformer (LPCT) a wide range of primary rated line currents can be covered. Objects with rated currents in the range of 40 A to 5000 A can be protected when using low-power current transformers.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Function overview Protection functions 1 2 IEC ANSI Instantaneous and definite time-overcurrent protection (phase/neutral) I>, I >>, I >>>, IE>, IE>>, IE>>>; Ip, IEp 50, 50N; 51, 51N Directional time-overcurrent protection, ground IE dir>, IE dir>>, IEp dir 67N Directional overcurrent protection, ground (definite/inverse) IEE>, IEE>>, IEEp 67Ns, 50Ns Displacement voltage, zero-sequence voltage V E, V 0> 59N
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Applications The SIPROTEC 7SK81 unit is a numerical motor protection relay for low power CT and VT inputs. It can perform control and monitoring functions and therefore provide the user with a cost-effective platform for power system management, that ensures reliable supply of electrical power to the customers. The ergonomic design makes control easy from the relay front panel.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Application sheets Protection functions 1 2 Directional overcurrent protection, ground (ANSI 67N) Time-overcurrent protection (ANSI 50, 50N, 51, 51N) This function is based on the phase selective measurement of the three phase currents and the ground current (four transformers). Three definite-time overcurrent protection elements (DMT) are available both for the phase and the ground elements.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Application sheets (Sensitive) directional ground-fault detection (ANSI 59N/64, 67Ns, 67N) Phase-balance current protection (ANSI 46) (Negative-sequence protection) For isolated-neutral and compensated networks, the direction of power flow in the zero sequence is calculated from the zero-sequence current I0 and zero-sequence voltage V0.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Application sheets 1 2 Protection functions/stages available are based on the available measured analog quantities: Function ANSI I>, IE> 50, 50N V<, V>, VE> 27, 59, 59N 3I0>, I 1>, I2>, I2 / I1>, 3V0>, V1> <,V2 > < 50N, 46, 59N, 47 P> <, Q> < 32 cos ϕ 55 f>< 81O, 81U df / dt > < 81R Table 7/3 Available flexible protection functions 3 For example, the following can be implemented: • Reverse power protect
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Application sheets Motor protection 1 Restart inhibit (ANSI 66/86) If a motor is subjected to many successive starts, the rotor windings or rotor bars can be heated up to a point where the electrical connections between the rotor bars and the end rings are damaged.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Application sheets 1 2 Load jam protection (ANSI 51M) Frequency protection (ANSI 81O/U) Load jam is activated when a sudden high load is applied to the motor because of mechanical failure of a pump for example. The sudden rise in current is detected by this function and can initiate an alarm or a trip. The overload function is too slow and thus not suitable.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Application sheets Metered values For internal metering, the unit can calculate an energy metered value from the measured current and voltage values. If an external meter with a metering pulse output is available, the 7SK81 can obtain and process metering pulses through an indication input. The metered values can be displayed and passed on to a control center as an accumulated value with reset.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Application examples Radial systems General hints: The relay at the far end (D) from the infeed has the shortest tripping time. Relays further upstream have to be time-graded against downstream relays in steps of about 0.3 s.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Application examples Small and medium-sized motors < 1MW 52 I>, I>>, I>>> IN>t > IStart²t I2> 50 51N 49 48 46 1 Visio-LSA4869a-en.pdf Applicable, with effective and lowresistance infeed (IE ≥ IN, Motor), to low-voltage motors and high-voltage motors with low-resistance infeed (IE ≥ IN, Motor). 2 M Fig.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Application examples Generators up to 1MW Two voltage transformers in V circuit are enough. 1 Busbar 52 2 f>< 81 G 51 3 46-1 PU 49 46 P> V> 32 Visio-LSA4873a-us.pdf I>t 59 IN>t 51N 4 Fig. 7/15 Protection concept for small generators Busbar protection by overcurrent relays with reverse interlocking 5 Infeed Applicable to distribution busbars without substantial (< 0.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Application examples Line feeder with load shedding In unstable power systems (e.g. solitary systems, emergency power supply in hospitals), it may be necessary to isolate selected consumers from the power system in order to protect the overall system. The overcurrent-time protection functions are effective only in the case of a short-circuit. Overloading of the generator can be measured as a frequency or voltage drop.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Selection and ordering data Product description 1 Order No.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Selection and ordering data ANSI No. Product description Order No. Order No.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Connection diagrams 1 IA F2 IB F3 IC F4 IN, INS BO1 C11 C9 C10 BO2 C14 C13 C12 BO3 E1 E2 E3 E4 E5 E6 BO4 3 BO5 4 C3 C4 C5 C6 C7 C8 5 BI1 BI2 BI3 Life Contact E10 E8 E7 = (~) Power Supply = 6 + - C1 C2 Port B e.g. System interface Port A Ethernet interface 7 Visio-Figure-14-us.pdf USB-DIGSI-Interface 8 Grounding on the case Fig.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Connection diagrams 1 F1 IA F2 IB F3 IC F4 IN, INS BO1 C1 1 C9 C10 BO2 C1 4 C13 C12 BO3 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 BO4 BO5 BO6 BO7 C3 C4 C5 C6 C7 C8 BI1 D1 D2 D3 D4 D5 D6 D7 D8 BI4 BO8 BI2 BI3 3 4 E10 E8 E7 Life Contact = BI5 2 (~) Power Supply = + - 5 C1 C2 6 BI6 Port A Ethernet interface Visio-Figure-15-us.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Connection diagrams 1 F1 IA VA-N IB VB-N IC VC-N IN, INS F2 F3 F4 C1 1 C9 C10 BO2 C1 4 C13 C12 BO3 E1 E2 E3 E4 E5 E6 BO4 3 BO5 4 C3 C4 C5 C6 C7 C8 5 BI1 BI2 BI3 E10 E8 E7 Life Contact = (~) Power Supply = 6 + - C1 C2 Port B e.g. System interface Port A Ethernet interface 7 Visio-Figure-16-us.pdf USB-DIGSI-Interface 8 Grounding on the case Fig.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Connection diagrams 1 F1 IA VA-N IB VB-N IC VC-N IN, INS F2 F3 F4 BO1 C1 1 C9 C10 BO2 C1 4 C13 C12 BO3 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 BO4 BO5 BO6 BO7 C3 C4 C5 C6 C7 C8 BI1 D1 D2 D3 D4 D5 D6 D7 D8 BI4 BO8 BI2 2 3 4 BI3 = BI5 5 E10 E8 E7 Life Contact (~) Power Supply = + - C1 C2 6 BI6 Port A Ethernet interface Visio-Figure-17-us.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Connection diagrams 1 IA F2 IB F3 IC F4 IN, INS BO1 C11 C9 C10 BO2 C14 C13 C12 BO3 E1 E2 E3 E4 E5 E6 BO4 3 BO5 4 C3 C4 C5 C6 C7 C8 5 BI1 E10 E8 E7 Life Contact BI2 = BI3 (~) Power Supply = + C1 C2 - Port B e.g.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Connection diagrams 1 F2 F3 F4 IA VA-N IB VB-N IC VC-N IN, INS BO1 C11 C9 C10 BO2 C14 C13 C12 2 BO3 E1 E2 E3 E4 E5 E6 3 E10 E8 E7 4 BO4 BO5 C3 C4 C5 C6 C7 C8 BI1 Life Contact BI2 = BI3 (~) Power Supply = + C1 C2 - Port B e.g.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Connection examples Standard connection capabilities 52 52 Flush Mounting Housing 52 F1 F2 2 F3 * 3 * A * B F4 IA IB IC Visio-Figure-20-M-us.pdf 1 IN SIPROTEC C M 4 Fig. 7/25 Connection to 3 low-power CTs, normal circuit layout, appropriate for all networks 52 52 Flush Mounting Housing 52 6 F1 F2 F3 7 * A * B * C F4 IA IB IC IN SIPROTEC 8 * 9 Fig.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Connection examples Standard connection capabilities 52 52 1 52 LPCT/LPVT R2 * 1) * R1 Flush Mounting Housing F1 * 2 VA-N IA LPCT/LPVT R2 * 1) * R1 F2 * 3 VB-N IB 4 LPCT/LPVT R2 * * R1 1) F3 VC-N IC 5 A B F4 C IN SIPROTEC LPCT Visio-Figure-22-us.pdf * 6 * 7 1) R1 and R2 represent the primary voltage divider. Important! Cable Shield Grounding must be done on the Cable Side! 8 Fig.
Generator and Motor Protection SIPROTEC 7SK81 for Low-Power CT and VT Applications - Connection examples Standard connection capabilities 52 52 52 LPVT 1) * R1 R2 Flush Mounting Housing RJ45 Y-Cable * 1 F1 VA-N IA 2 LPVT R2 RJ45 Y-Cable * 1) * R1 F2 VB-N IB LPVT * 1) R2 RJ45 Y-Cable * 3 R1 F3 VC-N IC 4 * LPCT A * LPCT B F4 LPCT C Visio-Figure-23-us.pdf * IN SIPROTEC 5 * LPCT 1) R1 and R2 represent the primary voltage divider.
Voltage and Frequency Protection 7RW80 SIPROTEC Compact
Voltage and Frequency Protection SIPROTEC 7RW80 Page 1 2 3 Description 8/3 Function overview 8/4 Applications 8/5 Application sheets 8/6 Application examples 8/8 Selection and ordering data 8/10 Connection diagrams 8/12 Connection examples 8/14 4 5 6 7 8 9 10 You will find a detailed overview of the technical data (extract of the manual) under: http://www.siemens.com/siprotec 8/2 SIPROTEC Compact · SIEMENS SIP 3.
Voltage and Frequency Protection SIPROTEC 7RW80 Description Description The SIPROTEC 7RW80 is a numerical, multi-function relay for connection to voltage transformers. It can be used in distribution systems, on transformers and for electrical machines. If the SIPROTEC Compact 7RW80 detects any deviation from the permitted voltage, frequency or overexcitation values, it will respond according to the values set.
Voltage and Frequency Protection SIPROTEC 7RW80 Function overview 1 Protection functions IEC Undervoltage/overvoltage protection V<, V> 27/59 Rate-of-voltage-change protection V E, V 0> 59N 1) Overfrequency/underfrequency protection f<, f> 81O/U Load restoration 2 81LR Jump of voltage vector Δϕ> Overexcitation protection V/f Phase-sequence-voltage supervision V2>, phase sequence Synchrocheck Rate-of-frequency-change protection 3 ANSI 24 47 25 df / dt 81R Rate-of-voltage-change pr
Voltage and Frequency Protection SIPROTEC 7RW80 Applications Line protection The SIPROTEC 7RW80 unit is a numerical protection device that can perform control and monitoring functions and therefore provide the user with a cost-effective platform for power system management, that ensures reliable supply of electrical power to the customers. The ergonomic design makes control easy from the relay front panel. A large, easyto-read display was a key design factor.
Voltage and Frequency Protection SIPROTEC 7RW80 Application sheets Protection functions 1 2 3 Undervoltage protection (ANSI 27) The two-element undervoltage protection provides protection against dangerous voltage drops (especially for electric machines). Applications include the isolation of generators or motors from the network to avoid undesired operating conditions and a possible loss of stability.
Voltage and Frequency Protection SIPROTEC 7RW80 Application sheets Protection functions/stages available are based on the available measured analog quantities: Function ANSI V<, V>, VE> 27, 59, 59N 3V0>, V1> <, V2> < 59N, 47 f>< 81O, 81U df / dt > < 81R dV / dt 27R/59R Table 8/2 Available flexible protection functions Further functions Measured values The r.m.s. values are calculated from the acquired voltages along with the frequency.
Voltage and Frequency Protection SIPROTEC 7RW80 Application examples Line feeder with load shedding 2 3 In unstable power systems (e.g. solitary systems, emergency power supply in hospitals), it may be necessary to isolate selected consumers from the power system in order to protect the overall system. Overexcitation protection V> V>> V/f=f(t) 52 59 24 7RW80 The overcurrent protection functions are effective only in the case of a short-circuit.
Voltage and Frequency Protection SIPROTEC 7RW80 Application examples Synchrocheck 1 Busbar V2 52 Closing Signal 2 1 Transformer V1 Local/remote control 2 1) SYN 25 2) Infeed 81 G 1) 2) AR SIP C-0022-en.pdf Where two system sections are interconnected, the synchrocheck determines whether the connection is permissible without danger to the stability of the power system. In the example, load is supplied from a generator to a busbar through a transformer.
Voltage and Frequency Protection SIPROTEC 7RW80 Selection and ordering data Product description Order No.
Voltage and Frequency Protection SIPROTEC 7RW80 Selection and ordering data ANSI No. Product description Order No. Bestell-Nr.
Voltage and Frequency Protection SIPROTEC 7RW80 Connection diagrams 1 2 C11 C9 C10 BO2 C14 C13 C12 BI1 BO3 BI2 BO4 BI3 BO5 E1 E2 E3 E4 E5 E6 VC, VN, Vsyn, VX C3 C4 C5 C6 C7 C8 3 BO1 VA, VAB, Vph-n VB, VBC E10 E8 E7 Life Contact 4 = (~) Power Supply = 5 + - C1 C2 Port B e.g. System interface Port A Ethernet interface 6 8_8_SIP-0011us.pdf USB-DIGSI-Interface 7 Grounding on the case Fig.
Voltage and Frequency Protection SIPROTEC 7RW80 Connection diagrams 1 E9 Q2 E11 E12 E13 E14 VA, VAB, Vph-n VB, VBC VC, VN, Vsyn, VX BO1 C1 1 C9 C10 BO2 C1 4 C13 C12 E1 E2 E3 E4 E5 E6 D9 D10 D11 D12 D13 D14 C3 C4 C5 C6 C7 C8 BI1 BO3 BI2 BO4 BI3 BO5 D1 D2 D3 D4 D5 D6 D7 D8 BI4 BO6 BO7 BI5 BO8 BI6 2 3 4 BI7 E10 E8 E7 Life Contact = (~) = + - C1 C2 Port B e.g. System interface Port A Ethernet interface A USB-DIGSI-Interface 8_9_SIP-0012us.
Voltage and Frequency Protection SIPROTEC 7RW80 Connection examples Standard connection A B C 1 52 Surface-/Flush Mounting Housing 52 2 A E9 VA E11 VB B E12 a A 3 B b VC E13 E14 SIPROTEC C 8_10_SIP-0006us.pdf 52 Fig. 8/10 Example for connection type "VAN, VBN, VCN" load-side voltage connection 4 A B C A B da 5 dn a 52 52 b Surface-/Flush Mounting Housing 6 A 7 B E9 VA-B E11 VC-B E12 E14 VN E13 C 8_11_SIP-0007us.pdf 52 SIPROTEC Fig.
Voltage and Frequency Protection SIPROTEC 7RW80 Connection examples Connection for synchrocheck A B C 52 52 B a b VA-B E9 A B 1 Surface-/Flush Mounting Housing VC-B E11 a b VSyn E14 E13 SIPROTEC A B 2 E12 C 8_13_SIP-0010us.pdf 52 A 3 Fig. 8/13 Example for connection type “VAB, VBC, VSYN” 4 A B C A 52 52 B a A E9 b E12 E11 E13 E14 B C VPh-N B a A 5 Surface-/Flush Mounting Housing b V-Transformer2 VSyn SIPROTEC 6 8_14_SIP-0009us.pdf 52 7 Fig.
Voltage and Frequency Protection SIPROTEC 7RW80 1 2 3 4 5 6 7 8 9 10 8/16 SIPROTEC Compact · SIEMENS SIP 3.
Feeder Protection 7SC80 SIPROTEC Compact
Feeder Protection SIPROTEC 7SC80 Page 1 2 3 4 5 Description 9/3 Function overview 9/4 Applications 9/5 Construction and hardware 9/6 Transformers 9/7 Function description 9/8 Application examples 9/14 Selection and ordering data 9/20 Connection diagrams 9/22 Connection examples 9/26 Connection types 9/30 SNTP Server/Master 9/31 6 7 8 9 10 You will find a detailed overview of the technical data (extract of the manual) under: http://www.siemens.
Feeder Protection SIPROTEC 7SC80 Description Description The SIPROTEC 7SC80 feeder protection can be used for protection and automation of medium-voltage distribution feeders with grounded, low-resistance grounded, isolated, or compensated neutral. 1 The SIPROTEC 7SC80 features “flexible protection functions”. 20 additional protection functions can be created by the user. For example, a rate of change of frequency function or a reverse power function can be created.
Feeder Protection SIPROTEC 7SC80 Function overview Protection functions 1 2 IEC ANSI No.
Feeder Protection SIPROTEC 7SC80 Applications The feeder protection SIPROTEC 7SC80 is a numerical protection device that can perform control and monitoring functions and therefore provides the user with a costeffective platform for power system management, that ensures reliable supply of electrical power to the customers. Operational indication Device operation was designed according to ergonomic aspects. Top priority was given to good display readability and large function keys.
Feeder Protection SIPROTEC 7SC80 Construction and hardware 2 3 4 5 6 The SIPROTEC 7SC80 has a complete other form factor than all other SIPROTEC Compact devices. All interfaces are at the left and right hand side of the relay. A small print onto the enclosure next to the clamps describes each port in detail. All clamps are pluggable and therefore a pre-wiring and easy replacement in case of maintenance is possible.
Feeder Protection SIPROTEC 7SC80 Transformers Low-power transformer terminals Low-power voltage transformers The SIPROTEC 7SC80 is available in two hardware configurations, featuring 3 inputs for connecting low-power current transformers (if the ground current has to be measured separately, the input Vx can be used) and optionally 3 inputs for voltage transformers. Here, the low-power voltage transformers are connected to the standard voltage transformer inputs.
Feeder Protection SIPROTEC 7SC80 Function description Protection functions 1 2 3 4 5 6 7 Battery monitor The DC 24/48 V auxiliary voltage version allows monitoring an external 24 V or 48 V battery. The DC voltage is measured directly and provided as measured value. The battery is tested periodically. For this purpose, the external battery loader is deactivated temporarily, and after a short waiting time, an external load impedance is connected to the battery.
Feeder Protection SIPROTEC 7SC80 Function description (Sensitive) directional ground-fault detection (ANSI 59N/64, 67Ns, 67N) Phase-balance current protection (ANSI 46) (Negative-sequence protection) For isolated-neutral and compensated networks, the direction of power flow in the zero sequence is calculated from the zero-sequence current I0 and zero-sequence voltage V0.
Feeder Protection SIPROTEC 7SC80 Function description The voltage is measured by detecting the current through the (external) resistor R at the sensitive current measurement input I EE. The varistor V serves to limit the voltage in the event of an internal fault. 1 It limits the high instantaneous voltage spikes that can occur at current transformer saturation. At the same time, this results to smooth the voltage without any noteworthy reduction of the average value.
Feeder Protection SIPROTEC 7SC80 Function description Thermal overload protection (ANSI 49) 1-pole operation To protect cables and transformers, an overload protection function with an integrated warning/alarm element for temperature and current can be used. The temperature is calculated using a thermal homogeneous body model (per IEC 60255-8), it considers the energy entering the equipment and the energy losses. The calculated temperature is constantly adjusted according to the calculated losses.
Feeder Protection SIPROTEC 7SC80 Function description Further functions 1 Measured values The r.m.s. values are calculated from the acquired current and voltage along with the power factor, frequency, active and reactive power.
Feeder Protection SIPROTEC 7SC80 Function description Commissioning Commissioning could not be easier and is supported by DIGSI 4. The status of the binary inputs can be read individually and the state of the binary outputs can be set individually. The operation of switching elements (circuit-breakers, disconnect devices) can be checked using the switching functions of the relay. The analog measured values are represented as wide-ranging operational measured values.
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SNTP-Master/Server SIPROTEC 7SC80 Radial systems 1) Auto-reclosure (ANSI 79) only with overhead lines 1 Infeed 2) Unbalanced load protection (ANSI 46) as backup protection against asymmetrical faults Transformer protection A 2 52 Busbar Further power supply B 52 I>t IN>t I2>t AR 51 51N 46 79 2) 3 1) Busbar * C 4 52 I>t IN>t I2>t 51 51N 46 5 Load Busbar * Load D 52 I>t IN>t I2>t 51 51N 46 Load 6 9_9_LSA4839-us.
Feeder Protection SIPROTEC 7SC80 Application examples Earth-fault detection in isolated or compensated systems 1 In isolated or compensated systems, an occurred earth fault can be easily found by means of sensitive directional earth-fault detection. 1) The sensitive current measurement of the earth current should be made by a zerosequence current transformer Infeed Busbar 2 52 3 I>> I>t 50 51 IN>t dir. 7XR96 1) 60/1 67Ns Load 4 Fig.
Feeder Protection SIPROTEC 7SC80 Application examples Busbar protection by overcurrent relays with reverse interlocking 1 Infeed Applicable to distribution busbars without substantial (< 0.25 x IN) backfeed from the outgoing feeders. Reverse interlocking I>>t0 50/50N 52 2 51/51N t0 = 50 ms Busbar 52 52 I>> I>t I>> I>t I>> I>t 50/50N 51/51N 50/50N 51/51N 50/50N 51/51N 3 9_11_LSA4842-us.pdf 52 4 Fig.
Feeder Protection SIPROTEC 7SC80 Application examples Automatic reclosing 3 4 5 6 Reverse power protection with parallel infeeds 7 8 9 10 If a busbar is supplied by two parallel infeeds and there is a fault in one of the infeeds, the affected busbar shall be selectively shut down, so that supply to the busbar is still possible through the remaining infeed. To do this, directional devices are required, which detect a short circuit from the busbar towards the infeed.
Feeder Protection SIPROTEC 7SC80 Application examples Synchrocheck 1 Busbar V2 52 Closing Signal 1 Transformer 2 Local/remote control VT1 4_16_LSA4114-us.pdf Where two system sections are interconnected, the synchrocheck determines whether the connection is permissible without danger to the stability of the power system. In the example, load is supplied from a generator to a busbar through a transformer.
Feeder Protection SIPROTEC 7SC80 Selection and ordering data Description Order No.
Feeder Protection SIPROTEC 7SC80 Selection and ordering data ANSI No. Description Order No. Bestell-Nr.
Feeder Protection SIPROTEC 7SC80 Connection diagrams 72 71 70 69 68 67 66 65 2 BI1 BI2 BI3 BI4 BI5 BI6 BI7 BI8 IC 64 63 62 61 60 59 58 57 3 I A/INs 5 BO2 BO3 BO4 BO5 48 47 46 6 9_Visio-kl-uebers-7sc80-1-us.pdf 7 8 45 44 43 42 41 40 39 38 37 36 35 34 33 BO1 Vx/IA 56 55 54 53 52 51 50 49 4 BI9 BI10 BI11 BI12 IB BO6 Life Contact BO7 BO8 + BAT IN GPS antenna port (optional) Port F e.g. System interface USB-DIGSI-Interface + = (~) = Power Supply Fig.
Feeder Protection SIPROTEC 7SC80 Connection diagrams IC IB IA 64 63 62 61 60 59 58 57 Vx 9_Visio-kl-uebers-7sc80-2-us.pdf + + + + - BO1 BO3 BO4 BO5 Life Contact BO6 BO7 BO8 + BAT IN GPS antenna port (optional) Port F e.g.
Feeder Protection SIPROTEC 7SC80 Connection diagrams 72 71 70 69 68 67 66 65 2 BI1 BI2 BI3 BI4 BI5 BI6 BI7 BI8 IC 64 63 62 61 60 59 58 57 3 I A/INs 5 6 9_Visio-kl-uebers-7sc80-3-us.pdf 7 8 34 33 BO2 VC BO3 VB BO4 VA BO5 48 47 46 45 44 43 42 41 40 39 38 37 36 35 BO1 Vx/IA 56 55 54 53 52 51 50 49 4 BI9 BI10 BI11 BI12 IB BO6 Life Contact BO7 BO8 + BAT IN GPS antenna port (optional) Port F e.g. System interface USB-DIGSI-Interface + (~) = = Power Supply HMI-Interface Fig.
Feeder Protection SIPROTEC 7SC80 Connection diagrams 1 IC IB IA 64 63 62 61 60 59 58 57 Vx VC VB VA 9_Visio-kl-uebers-7sc80-4-us.pdf + + + + - BO1 Life Contact BO2 BO3 BO4 BO6 BO7 BO8 + BAT IN GPS antenna port (optional) Port F e.g.
Feeder Protection SIPROTEC 7SC80 Connection examples Connection of current and voltage transformers A B C Standard connection For grounded networks, the ground current is obtained from the phase currents by the residual current circuit. 2 52 52 Surface-/Flush Mounting Housing P2 S2 P1 S1 A 3 52 B F1 IA F2 F3 IB F4 F5 IC F6 IN F7 C 4_25_LSA4789-en.pdf 1 F8 SIPROTEC Fig.
Feeder Protection SIPROTEC 7SC80 Connection examples Connection for compensated networks The figure shows the connection of two phase-to-ground voltages and the V E voltage of the broken delta winding and a phase-balance neutral current transformer for the ground current. This connection maintains maximum precision for directional ground-fault detection and must be used in compensated networks.
Feeder Protection SIPROTEC 7SC80 Connection examples Connection for the synchrocheck function If no directional earth-fault protection is used, connection can be done with just two phase current transformers. For the directional phase short-circuit protection, the phase-to-phase voltages acquired with two primary transformers are sufficient.
Feeder Protection SIPROTEC 7SC80 Connection examples Standard connection capabilities 1 mm 52 mm 52 mm 52 LPCT/LPVT Flush Mounting Housing 2 R2 * * R1 1) 49 50 59 60 * VA-N IA 3 LPCT/LPVT R2 * 1) * R1 51 52 61 62 * VB-N IB 4 LPCT/LPVT 1) R2 * * R1 53 54 63 64 VC-N IC 5 A B C SIPROTEC 9_36 Kombi.pdf * 6 7 1) R1 and R2 represent the primary voltage divider. Fig.
Feeder Protection SIPROTEC 7SC80 Connection types Overview of connection types 1 2 3 4 5 Type of network Function Current connection Voltage connection (Low-resistance) grounded networks Time-overcurrent protection phase/ground non-directional Residual circuit, with 3 phasecurrent transformers required, phase-balance neutral current transformers possible – (Low-resistance) grounded networks Sensitive ground-fault protection Phase-balance neutral current transformers required – Isolated or comp
SNTP-Master/Server SIPROTEC 7SC80 Description The hardware variant of the SIPROTEC 7SC80 integrates an SNTP server and a GPS module. 1 With it the first substation hardened SNTP server with GPS receiver is available for precise time synchronization for all SIPROTEC protection devices and all other SNTP-capable devices, e.g. SICAM T/Q80 or 3rd-party products. Protection functions are not provided. The few configuration settings (e.g. IP-address) will be done with DIGSI 4. 2 SIP-COM-05.
SNTP-Master/Server SIPROTEC 7SC80 Selection and ordering data 1 2 3 9_SNTP.eps 4 5 Fig. 9/37 Example of a redundant integration of a 7SC80 SNTP server in an optical SIPROTEC ring network 6 7 Selection and ordering data Description Order No. 123456 7 SNTP-Master/Server 7SC80 8 8 ...............................
Attachment SIPROTEC Compact
Attachment Page 1 2 Ordering examples and accessories 10/3 Selection and ordering data 10/4 Dimension drawings 10/5 Legal notice 10/7 3 4 5 6 7 8 9 10 10/2 SIPROTEC Compact · SIEMENS SIP 3.
Attachment Ordering examples and accessories Ordering example Position Description Order No. 12 3 45 6 7 Short code 1 8 9 10 11 12 13 14 15 16 7RW80 2 0 - 5 E C 9 6 - 1 D A 0 + L 0 G 6 Housing 1/6 19", 3xV, 7 BI, 8 BO1), 1 life contact 8 Rated auxiliary voltage: DC 60 V to 250 V; AC 115 V; AC 230 V 9 Flush mounting housing, screw-type terminal 10 11 Region US, language US-English, US front, ANSI Communication: System interface: DNP 3.
Attachment Selection and ordering data Description 1 Order No. SIGRA 4 Software for graphic visualisation, analysis and evaluation of fault and measurement records is running under 32- and 64-Bit MS Windows XP Professional MS Windows 7 MS Windoxs Server 2008 R2 see product information for supported service packs of operating systems 2 SIGRA 4 for DIGSI With license for 10 PCs (authorisation by serial number) For ordering the specification of a DIGSI 4 serial number is required.
Attachment Dimension drawings 74/2.9 74/2.9 74/2.9 70/2.76 70/2.76 70/2.76 1 Rear view 7RW80 F Rear view 7SJ80, 7SK80 and 7SD80 SIP C-0019-de.ai LSA4837a-de.ai 2 Rear view 7SJ81, 7SK81 3 Side view Front view Panel cut-out 4 Fig. 10/1 Panel surface and cabinet flush mounting 5 6 7 8 9 192,6 199,1 29,7 251,5 LSA4834a-de.ai 165,1 Side view 7RW80 Fig.
Attachment Dimension drawings Dimension drawings SIPROTEC 7SC80 1 Maßbilder 7SC80 side.tif 2 3 4 5 6 7 8 Maßbilder 7SC80 front.tif 9 10 Fig. 10/3 SIPROTEC 7SC80 dimensions Note: Dimensions in mm Values in Brackets in inches 10/6 SIPROTEC Compact · SIEMENS SIP 3.
Attachment Legal notice Indication of conformity Copyright This product complies with the directive of the Council of the European Communities on the approximation of the laws of the Member States relating to electromagnetic compatibility (EMC Council Directive 2004/ 108/EC) and concerning electrical equipment for use within specified voltage limits (Low-voltage Directive 2006/95/EC). Copyright © Siemens AG 2013. All rights reserved.
* Published by and copyright © 2014: Siemens AG Infrastructure & Cities Sector Smart Grid Division Energy Automation Humboldtstr. 59 90459 Nuremberg Germany All rights reserved. If not stated otherwise on the individual pages of this catalog, we reserve the right to include modifications, especially regarding the stated values, dimensions and weights. Drawings are not binding. All product designations used are trademarks or product names of Siemens AG or other suppliers.
