C191HM Powermeter and Harmonic Manager Installation and Operation Manual BG0280 Rev.
C191HM Powermeter & Harmonic Manager Installation and Operation Manual
LIMITED WARRANTY The manufacturer offers the customer an 24-month functional warranty on the instrument for faulty workmanship or parts from date of dispatch from the distributor. In all cases, this warranty is valid for 36 months from the date of production. This warranty is on a return to factory basis. The manufacturer does not accept liability for any damage caused by instrument malfunction.
The secondary of an external current transformer must never be allowed to be open circuit when the primary is energized. An open circuit can cause high voltages, possibly resulting in equipment damage, fire and even serious or fatal injury. Ensure that the current transformer wiring is made through shorting switches and is secured using an external strain relief to reduce mechanical strain on the screw terminals, if necessary.
Table of Contents Quick Start ........................................................................................ iv Chapter 1 Introduction .................................................................... 1 1.1 1.2 About This Manual.................................................................................. 1 About The C191HM ................................................................................. 1 Chapter 2 Installation ............................................................
Quick Start TYPICAL INSTALLATION Wiring Mode 4LL3 (see Section 2.2.
SETUP (see Chapter 4 for full instructions) Setups can be performed directly on the front panel or via PComTest communication software. Press Press CHG SELECT SELECT ENTER . to activate middle window. Press ⇑ ⇓ to scroll to desired option. Press SELECT to activate lower window. Press ⇑ ⇓ to scroll to desired value. Press ENTER to save selected value.
Chapter 1 Introduction 1. 1.1 About This Manual This manual is intended for the user of the C191HM Powermeter. This Powermeter is a microprocessor-based instrument used for the measurement, monitoring, and management of electrical parameters. This chapter gives an overview of this manual and an introduction to the C191HM. Chapter 2, Installation, provides instructions for mechanical and electrical installation. Chapter 3, Using the Menus, presents the structure of menus for setup and status viewing.
screen with a programmable scroll interval of 2 to 15 seconds. Automatic return to the main screen is available after 30 seconds of uninterrupted use. The front panel also includes: • bar graph showing percentage load with respect to user-definable nominal (100%) load current • alarm LED providing a local indication when a predefined alarm condition appears.
Measured Parameters Note: Real-time values are measured over 1 cycle of fundamental frequency; Average values are of 8, 16 or 32 real-time values Parameter Display Com √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ Average Amps, Volts, Frequency Average RMS voltage per phase L-N Average RMS voltage per phase L-L Average RMS current per phase Average frequency Average neutral current Voltage & current unbalance Amps & Volt Demand Par
Parameter Total active energy export Total reactive energy import Total reactive energy export Total reactive energy net Total reactive energy absolute Total apparent energy Min/Max Log Min/Max volts Min/Max amps, neutral current Min/Max frequency Min/Max kW, kvar, kVA, PF Real-time Amps, Volts, Frequency RT RMS voltage per phase L-N RT RMS voltage per phase L-L RT RMS current per phase RT frequency RT neutral current Real-time Power Values RT active power per phase RT reactive power per phase RT apparent p
Parameter Individual Harmonic Distortion Voltage harmonics 1-40 per phase Current harmonics 1-40 per phase Odd voltage harmonics 3-39 per phase Odd current harmonics 3-39 per phase High odd voltage harmonics 3-39 triggers High odd current harmonics 3-39 triggers Voltage harmonics angles 1-40 per phase Current harmonics angles 1-40 per phase Phase Rotation Counters Status Input Relay Status Remote Relay Control Alarm Trigger Status Self-Diagnostic Tests Display Com Analog Output Pulse Alarm √ √ √ √ #$
86 m m Instrument Dimensions 144mm C1 91 HM LO AD % K1 TX D RX D K2 K3 V1 , A1 V2- 2 kV A An eu tra l K4 AL AR M V2 A2/ V23 PF Hz MA X MI N K5 ES C K6 K7 SE LE 14 4m V3 A3, V31 kW kv ar K8 CT EN ER GY EN T ER m c99-10021/2 Figure 1-1 C191HM Dimensions 6 Chapter 1 Introduction
Chapter 2 Installation 2. 2.1 Mechanical Installation Prepare the panel cut-out, 136 x 136 mm, prior to mounting. STEP 1: Place the instrument through the cut-out. STEP 2: Assemble the latches onto the outer wall of the enclosure. STEP 3: Tighten the screws. C1 91 H +1 .0 +1.0 13 6.0 136.
2.2 Electrical Installation Before installation ensure that all incoming power sources are shut OFF. Failure to observe this practice can result in serious or even fatal injury and damage to equipment. 2.2.1 Power Supply Connection The power supply can be dedicated-fused, or from a monitored voltage if it is within the instrument’s power supply range. Use an external circuit breaker or switch. AC power supply: line to terminal 12; neutral to terminal 10.
Wiring Wiring Configuration (See parameter setup instructions in Section 4.
Figure 2-3 L K LOAD L Four Wire WYE Direct Connection Using 3 CTs (3-element) + - L K + - K - LINE 1 (A) LINE 2 (B) LINE 3 (C) N + Shorting Switches Wiring Mode = 4LL3 or 4Ln3 Voltages Currents + 1 V1 - 3 + 4 V2 V3 6 - 7 + - 9 10 VN 12 c99-09036 K LINE 1 (A) LINE 2 (B) LINE 3 (C) N L K + Figure 2-4 L - K + L LOAD Four Wire WYE Connection Using 3 PTs, 3 CTs (3element) - + - + - + - Shorting Switches + - + - + - Wiring Mode = 4LL3 or 4Ln3 Voltages Currents + 1 V1 2
K LINE 1 (A) L Figure 2-5 - + LINE 2 (B) LOAD K LINE 3 (C) L + + - + - + - + - - Shorting Switches Voltages Currents 1 + - I 2 V 3 1 4 5 V2 8 V3 11 VN 6 7 9 I Three Wire Open Delta Connection Using 2 PTs, 2 CTs (2-element) Wiring Mode = 3OP2 1 2 + - I3 10 12 c99-09038 K LINE 1 (A) LINE 2 (B) LINE 3 (C) Figure 2-6 L K + L - K + L LOAD - - + - + Three Wire Open Delta Connection Using 2 PTs, 3 CTs (2½-element) Wiring Mode = 3OP3 Shorting Switches - + - + Voltages Cu
K LINE 1 L - + LINE 2 (B) LINE 3 (C) K Figure 2-7 L - + K + N - + - + - + - + LOAD L Four Wire Wye Connection Using 2 PTs, 3 CTs (2½element) - Wiring Mode = 3Ln3 or 3LL3 Shorting Swit ches Voltage s Currents 1 + 2 V - I1 3 + 4 5 V I 6 - 2 + 7 8 V - I3 9 10 V 11 12 * L 1 (A) * L2 * L 2 (B) N + L3 * L 3 (C) 208VAC 120VAC L K 120VAC 240VAC * 240VAC LINE 3(C) K + 240VAC LINE 2(B) * L1 - LINE 1(A) c99-09040 L - LOAD K L + N - N Shorting Switches Grounded de
2.2.5 Relay Eight relays are provided for energy pulsing, alarms or remote control. C1 91H M CONTR OL RE LAY S 1 2 3 4 5 2 0 21 22 23 24 25 6 26 27 28 29 7 8 30 31 REL AY CONTROL ENABL E/ DISABLE LOAD FUSE 10 -15A FUSE 15 A N LOAD N 1 20- 230 V AC 12 0-23 0V AC LOAD FUSE 5A N N 12 0-23 0V AC c99- 0904 5 Figure 2-9 Relay Connection 2.2.6 Status Input One status input is provided for status monitoring or external synchronization input for power demand period.
2.2.7 Analog Output The C191HM provides one optically isolated analog output with current output options of 0-20 mA and 4-20 mA (current loop load of up to 500 Ohm). The analog output must be used with a 24 V DC external power supply.
2.2.8 Communications The C191HM is provided with an RS-232 or RS-485 communication port. Connections can be made as follows: RS-232: distance of up to 15 meters, one C191HM to one computer/PLC, using a flat or twisted pair cable of 0.
9-PIN DB9 FEMALE CONNECTOR RS-232 15 POWERMETER 13 14 SG GND TxD RxD RxD TxD 5 2 3 DSR IBM PC/COMPATIBLE 6 DTR 4 RTS 7 CTS 8 c99-11015 Figure 2-15 RS-232 Simple 3-Wire Computer Connection, 9-pin IBM PC /COMPATIBLE or RS-2 32/RS-485 CONVERTER C192PF8 POWER FACTOR CONTRO LLERS RS-485 #1 RxD Shi eld 13 14 + - TxD R1 RxDTxD- 15 #2 Sh ield 13 14 + - 15 R1, R2 = 200-500 Ohm, 0.
instrument.
Chapter 3 Using The Menus 3. Press and release appear: Press Press SELECT to enter the setup mode. The primary menus will StA - Status Information Menu (see Chapter 6) OPS - Setup Options Menu CHG - Setup Change Menu (see Chapter 4) SELECT ENTER again to activate the window of the desired primary menu. . Select CHG to initialize or modify the instrument setup, or to clear the accumulated values stored in the instrument. Entry to this menu can be protected by a password.
SELECT ENTER Status Information StA Setup Options ENTER OPS Setup Change Password CHG PASS Reset Functions rSt Basic Setup bASc Port Setup Port Digital Inputs dinP Analog Outputs Aout Pulsing Setpoints PulS Event Setpoints SetP Relay Operation Phase Rotation PHAS Relay Status rEL Status Inputs St.In Counter #1 Cnt.1 Counter #2 Cnt.2 Counter #3 Cnt.3 Counter #4 Cnt.
Chapter 4 Setup Menus 4. CHAPTER 3 SETUP MENUS NOTE: Instrument setup can be performed directly on the front panel using the setup menus or via communications using PComTest communication software. PComTest is supplied with your instrument and provides full setup capabilities for your instrument. For information on using PComTest, refer to the user documentation supplied with your instrument.
Table 4-1 Basic Setup Options (∗ default setting) Code ConF Parameter Wiring mode Options Description 3OP2 3-wire open delta using 2 CTs (2 element) 4-wire Wye using 3 PTs (3 element), line to neutral voltage readings 3-wire direct connection using 2 CTs (2 element) 4-wire Wye using 3 PTs (3 element), line to line voltage readings 3-wire open delta using 3 CTs (2½ element) 4-wire Wye using 2 PTs (2½ element), line to neutral voltage readings 4-wire Wye using 2 PTs (2½ element), line to line voltage rea
4.2 Communications Port Setup Menu SELECT CHG Port ENTER ENTER This menu allows you to access the communications port options that the C191HM uses to communicate with a master computer. Table 4-2 lists the communications options, their code names and applicable choices. Activate the middle window to scroll through the list of available options, and then activate the lower window to set the option value. Port To select and view a setup option: Prot Press SELECT to activate the middle window.
4.3 Digital Input Setup Menu SELECT CHG ENTER dinP ENTER This menu is used to set up a digital input provided by the C191HM. The digital input can be configured as: - a status input to monitor external contact status, or - an external synchronization pulse input to receive an external synchronization pulse indicating the beginning of a new demand interval for power demand measurements. The setup menu is used for allocating an external synchronization pulse input.
4.4 Analog Output Setup Menu [This section is relevant to instruments ordered with this option.] CHG SELECT Aout ENTER ENTER This menu allows you to set up an output value and its zero and full scales for the internal analog output. Table 4-3 explains the analog output setup options, and Table 4-4 lists all measurement parameters that can be directed to analog output.
Table 4-3 Analog Output Setup Options OutP Lo Code Option Output parameter Zero scale (0/4 mA) Hi Full scale (1/20 mA) Description The output parameter for the analog output channel The reading of the parameter corresponding to a zeroscale current output The reading of the parameter corresponding to a full-scale current output Table 4-4 Analog Output Parameters Code nonE r. U 1 r. U 2 r. U 3 r. C1 r. C2 r. C3 r. P r. q r. S r. PF r. PF.LG r. PF.Ld r.
NOTE: Pmax is rounded to nearest whole kW units. If Pmax is more than 9999.000 kW, it is truncated to 9999.000 kW Wiring via PTs (PT Ratio > 1): Vmax (690 V input option) = 144 × PT Ratio [V] Vmax (120 V input option) = 144 × PT Ratio [V] Pmax = (Imax × Vmax × 3)/1000 [MW x 0.001] @ wiring modes 4Ln3, 3Ln3 Pmax = (Imax × Vmax × 2)/1000 [MW x 0.001] @ wiring modes 4LL3, 3OP2, 3dir2, 3OP3, 3LL3 NOTE: Pmax is rounded to nearest whole kW units. The actual frequency range is 45.00 - 65.00 Hz 4.
NOTES 1. If your instrument is not equipped with the optional relay, then this setup parameter will not appear on the display. 2. You will not be able to store your setup in the instrument if you assigned a parameter to relay output with a zero number of unit-hours per pulse. 3. If a relay you allocated for pulsing has been manually operated or released, it reverts automatically to normal operation. 4.
SP 1 Act rEL.1 Setpoint action The action to be triggered is operation of relay #1. To select a setpoint: Scroll to the desired setpoint using the up/down arrow keys. To view the setup options for the setpoint: Press SELECT to activate the middle window. Use the up/down arrow keys to scroll to the desired setup option. The value associated with this option is displayed in the lower window. To change the selected setup option: Press SELECT to activate the lower window.
Table 4-6 Setpoint Setup Options (middle window) Code triG Option Trigger parameter On OFF Operate limit Release limit On d Operate delay OFF d Release delay Act Setpoint action Description The measurement parameter or signal to be monitored by the setpoint. The threshold at which the setpoint becomes operative. The threshold at which the setpoint is released (becomes inoperative). The time delay (0.1 second resolution) before operation when the operate condition is fulfilled. The time delay (0.
Code A. PF.Ld Ar neU.C Ar Hi.Fr Ar Lo.Fr Parameter Low total PF Lead Average Auxiliary Measurements High neutral current High frequency Low frequency Present Demands Unit A Hz Hz Range 0 to 1.000 0 to Imax 0 to 100.00 0 to 100.00 Hi d.U1 Hi d.U2 Hi d.U3 Hi d.C1 Hi d.C2 Hi d.C3 Hi d.P Hi d.S Hi Sd.P Hi Sd.S Hi Ad.P Hi Ad.S Hi Pd.P Hi Pd.
Table 4-8 Setpoint Actions (lower window, when middle window is Act) Code NonE ALAr rEL.1 rEL.2 rEL.3 rEL.4 rEL.5 rEL.6 rEL.7 rEL.8 In.Cn.1 In.Cn.2 In.Cn.3 In.Cn.3 In.Cn.4 ti.Cn.1 ti.Cn.1 ti.Cn.1 ti.Cn.
4.7 Relay Operation Control Menu SELECT CHG ENTER rELo ENTER This menu allows you to set the relay operation mode: non-failsafe or failsafe. Failsafe relay operation is the opposite of normal operation where relay contacts are closed when a relay is operated (activated), and are open when a relay is released (de-activated).
4.8 Display Setup Menu CHG SELECT diSP ENTER ENTER This menu allows you to view and change display properties. Table 4-9 lists available options with their code names and applicable ranges. Table 4-9 Display Options (∗ default setting) Display Code Parameter Options diSP UPdt Display update time 0.1 - 10.0 s (0.
To select a display option: Press SELECT to activate the middle window, and then use the up/down arrow keys to scroll to the desired option. To change the display option: Press SELECT to activate the lower window. Use the up/down arrow keys to set the desired option. Press ENTER to store your new setting or press ESC to leave your previous setting unchanged. To quit the display setup menu: From the middle window, press ESC or ENTER .
4.9 User Selectable Options Menu CHG SELECT OPtS ENTER ENTER This menu allows you to change options which relate to the instrument features and functionality. Table 4-10 lists all available options with their code names and applicable ranges. To select an option: Press SELECT to activate the middle window, and then use the up/down arrow keys to scroll to the desired option. To change the selected option: OPtS P.cAL rEAc Press SELECT to activate the lower window.
Energy roll value example: If roll value = 10.E4, the energy counter contains 4 digits, i.e., energy is displayed up to 9.999 MWh (Mvarh, MVAh) with resolution 0.001 MWh. Rollover Value 10.E4 10.E5 10.E6 10.E7 10.E8 Maximum Energy kWh (kvarh, kVAh) 9,999 99,999 999,999 9,999,999 99,999,999 Maximum Display Reading MWh (Mvarh, MVAh) 9.999 99.999 999.99 9,999.9 99,999 Display Resolution MWh (Mvarh, MVAh) 0.001 0.001 0.01 0.
4.10 Access Control Menu SELECT CHG AccS ENTER ENTER This menu can be only accessed via the Setup Change Menu (CHG). It is used in order to: • change the user password • enable or disable password check To view an option setting: Press SELECT to activate the middle window. Use the up/down arrow keys to scroll to the desired option (PASS or CtrL). Password Setting Password Protection Control AccS AccS PASS CtrL 8780 OFF To change the password: Press SELECT to activate the lower window.
4.11 Reset/Synchronization Menu SELECT CHG ENTER rSt ENTER This menu allows you to reset to zero the accumulators and Min/Max registers in your instrument, and also to synchronize the power demand interval. The menu can be only accessed via the Setup Change Menu (CHG). If the reset is disabled from the Basic Setup Menu (see Section 4.1), you will not be able to enter this menu.
Chapter 5 Data Display 5. 5.1 Navigating in the Display Mode The front panel has a simple interface that allows you to display numerous measurement parameters in up to 45 display pages. For easier reading, the parameters are divided into three groups, each accessible by a designated key.
Load Bar Graph The load bar graph displays the amount, in percent, of the current load with respect to user-defined nominal load current. The highest current measured by the C191HM is divided by the nominal load current as defined in the Display Setup Menu (see Section 4.8) and expressed as a percent by the LEDs (40% to 110%) which are lit. For example, if all LEDs up to and including 90% are lit, this means that the load is 90% of the nominal load current.
common measurements parameters. Selecting Min/Max Measurements Press the MAX/MIN key. Use the up/down arrow keys to scroll through Min/Max measurements. Selecting Total Harmonic Measurements Press the H/ESC key until the THD/TDD LED is illuminated. Use the up/down arrow keys to scroll through the different harmonic parameters. Selecting Individual Voltage Harmonics Measurements Press the H/ESC key until the HARMONICS LED is illuminated and volts LEDs at the right are lit.
5.2 Data Display Formats Table 5-1 specifies all front panel local displays available in the display mode. The display windows are labeled in the table as follows: 1 = upper window, 2 = middle window, 3 = lower window. Table 5-1 Displayed Parameters Page Window Indicator LED Parameter Digits Unit 1 1 1 1 2 3 V1/V1-2 V2/V2-3 V3/V3-1 Voltage L12 Voltage L23 L. Voltage L31 4 4 4 V/kV V/kV V/kV 2 2 2 1 2 3 V1/V1-2 V2/V2-3 V3/V3-1 Voltage L1 Voltage L2 P.
Page Window Indicator LED Parameter 14 14 14 1 2 3 15 15 15 1 2 3 16 16 1 3 U.Unb Voltage unbalance 17 17 1 3 1 1 1 1 2 3 2 2 2 PF kW H1.L2 H01 power factor L2 H01 kW L2 PF kW H1.L3 H01 power factor L3 H01 kW L3 Digits Unit Label 4 4 kW/MW Label 4 4 kW/MW 4 Label % C.Unb Current unbalance Min/Max Measurements 4 Label % V1/V1-2 V2/V2-3 V3/V3-1 Min. real-time voltage L1/L12 Min. real-time voltage L2/L23 Min. real-time voltage L3/L31 4 4 4 V/kV V/kV V/kV 1 2 3 A1 A2 A3 Min.
Page Window 11 3 Indicator Parameter LED Max. sliding window kW demand kW Digits Unit 4 kW/MW Total Harmonic Measurements THD/TDD 1 1 1 1 2 3 V1/V1-2 V2/V2-3 V3/V3-1 Voltage THD L1/L12 Voltage THD L2/L23 thd. Voltage THD L3 4 4 4 % % % 2 2 2 1 2 3 A1 A2 A3 Current THD L1 Current THD L2 thd. Current THD L3 4 4 4 % % % 3 3 3 1 2 3 A1 A2 A3 Current TDD L1 Current TDD L2 tdd. Current TDD L3 4 4 4 % % % 4 4 4 1 2 3 A1 A2 A3 Current K-Factor L1 4 Current K-Factor L2 4 HF.
Page Window 5 5 5 1 2 3 Indicator LED Mvarh Parameter rE.En. EP. Mvarh export Digits Unit 5 Label Label Mvarh 5 Label Label MWh 5 Label Label Mvarh 5 Label Label MVAh 5 Label Label MWh 5 Label Label Mvarh 5 Label Label MVAh 5 Label Label MWh 5 Label Label Mvarh 5 Label Label MVAh Phase Energies 6 6 6 1 2 3 MWh Ac.En. IP.L1 MWh import L1 7 7 7 1 2 3 Mvarh rE.En. IP.L1 Mvarh import L1 8 8 8 1 2 3 MVAh AP.En. L1 MVAh L1 9 9 9 1 2 3 MWh Ac.En. IP.
Phase energy readings are displayed only in 4LN3/4LL3 and 3LN3/3LL3 wiring modes if they are enabled in the User Selectable Options menu (see Section 4.9). When the 4LN3 or 3LN3 wiring mode is selected, the voltages will be line-to-neutral; for any other wiring mode, they will be line-to-line voltages. Displayed only in the 4LN3 or 3LN3 wiring mode. 5.3 Self-Test Diagnostics Display The C191HM periodically performs self-test diagnostics during operation.
Chapter 6 Viewing Status Information 6. Through the Status Information Menu (StA), it is possible to view the status of various instrument features. 6.1 The Status Information Menu StA SELECT ENTER To enter the Status Information Menu: From the display mode, press SELECT to enter the Primary Selection Menu. Press SELECT to activate the StA window. Press ENTER . . To select a display page: Press the up/down arrow keys to scroll through the display pages.
Table 6-1 Status Information Display 48 Page Window Parameter Digits 1 1 1 1 2 3 PHAS rOt Phase rotation sequence (POS/NEG/ERR) 4 2 2 2 1 2 3 rEL Relay #1 - #4 status Relay #5 - #8 status 4 4 3 3 1 3 St.In Status input 1 4 4 1 3 Cnt.1 Counter #1 5 5 5 1 3 Cnt.2 Counter #2 5 6 6 1 3 Cnt.3 Counter #3 5 7 7 1 3 Cnt.
Appendix: Technical Specifications 7. ions Input and Output Ratings 3 galvanically 690 V: isolated voltage (standard) inputs 120 V: (optional) 3 galvanically 5 A: isolated current (standard) inputs 1 A: (optional) Voltage and current input terminals Optically isolated communication port Relay outputs Analog output (optional) 4-20 mA 0-20 mA Status input Display DIRECT INPUT (690V line-to-line voltage and 400V lineto-neutral) Burden: <0.5 VA INPUT USING PT Burden: <0.
Environmental Conditions Operating temperature -20°C to +60°C (-4°F to +140°F) Storage temperature -25°C to +80°C (-13°F to +176°F) 0 to 95% non-condensing Humidity Construction Instrument body Case enclosure: flame resistant ABS & Polycarbonate Blend Dimensions: 144 x 144 x 86 mm ( 5.67 x 5.67 x 3.39 “) Mounting: 136 x 136 mm square cut-out (DIN 43700) Instrument weight 0.9 kg (2.04 lb.
0.36×PT×CT @ 120V input 1.2×PT×CT @ 690V input 0.36×PT×CT @ 120V input 1.2×PT×CT @ 690V input 1 Reactive power Apparent power Power factor Appendix: Technical Specifications 0.36×PT×CT @ 120V input 1.2×PT×CT @ 690V input Active power For L-L reading except 3OP2/3OP3 wiring modes For L-N reading and for 3OP2/3OP3 wiring modes CT PRIMARY CURRENT 208V×PT @120V or 690V×PT @690V Full scale 120V×PT @120V or 400V×PT @690V Line current Parameter Voltage Measurement Specifications Rdg 1 0.5 0.
CT PRIMARY CURRENT Neutral (unbalanced) current 360º Current harmonic angles 52 Reactive energy Import & Export Active energy Import & Export 360º Voltage harmonic angles Ampere demand KW demand (block & sliding) KVA demand (block & sliding ) Total Harmonic 999.9 Distortion THD U (I), % U1 (I1) Total Demand 100 Distortion TDD (I), % Individual harmonic 100 distortion, % Full scale Parameter Frequency 1.5 0.2 0.
Accuracy, % Rdg FS Conditions according to power accuracy Range Appendix: Technical Specifications 53 Additional Notes 1. Accuracy is expressed as ± (percentage of reading + percentage of full scale) ± 1 digit. This does not include inaccuracies introduced by the user's potential and current transformers. 2. Specifications assume: voltage and current wave forms with THD ≤ 5% for kvar, kVA and PF; reference operating temperature: 20 - 26°C. 3.
Index A accuracy, 51 active energy, 3, 51 active power, 3, 4, 34, 50 alarms, 13 ampere demand, 20, 29, 42 analog output, 2, 5, 8, 14, 23, 24 analog outputs, 20 B basic setup, 19 burden, 48 C communications, 51 CT, 1, 2, 9, 20, 24, 32, 39, 48, 50, 51 CT PRIMARY CURRENT, 20, 50, 51 current inputs, 8, 48 current transformers, 51 mounting, 1, 7 O open delta, 9, 20 options, 14 overload withstand, 48 P panel cut-out, 7 password, 2, 17, 36, 37, 39, 46 PComTest, 19 power, i, 2, 3, 4, 8, 14, 20, 22, 23, 31, 34,
