EPS 6000 UPS Shared Systems User’s Guide
IMPORTANT SAFETY INSTRUCTION SAVE THESE INSTRUCTIONS — This manual contains important instructions for the EPS 6000 series UPS Systems that must be followed during installation, operation and maintenance of the equipment. WARNING OPENING ENCLOSURES EXPOSES HAZARDOUS VO LTAG E S . A LWAY S REFER S E RV I C E TO QUALIFIED PERS ON E L ON LY WARNING As standards, specifications, and designs are subject to chang e , please ask for confirmation of the infor m ation g iven in tihs publicaion.
prepared for: EPS 6000 Shared Systems User’s Guide For service call 1-800-438-7373 86-130034-00 B00 11/96 Copyright © 1996 MGE UPS Systems, Inc.. All rights reserved. Printed in U.S.A.
EPS 6000 UPS Shared Systems User’s Guide Warranty Seller warrants to the Ultimate Purchaser (the purchaser who buys for use, and not for resale) that all products furnished under this order and which are manufactured by Seller will conform to final specifications, drawings, samples and other written descriptions approved in writing by Seller, and will be free from defects in materials and workmanship.
Contents Section I Introduction 1.0 . . . . . . . . . . . . . . . Scope 1.1 . . . . . . . . . . . . . . . General Description 1.2 . . . . . . . . . . . . . . . Description of UPS Module Major Internal Components 1.2.1 Rectifier/Battery Charger 1.2.2 Inverter 1.2.3 Inverter Transformer 1.2.4 Battery System 1.3 . . . . . . . . . . . . . . . Description of SSC Major Internal Components 1.4 . . . . . . . . . . . . . . . Options 1.5 . . . . . . . . . . . . . . . Specifications, UPS Modules 1.5.1 Electrical 1.
EPS 6000 UPS Shared Systems section description page 2.4 . . . . . . . . . . . . . . . Normal Operating Procedures 2.4.1 Checks Before Start-up 2.4.2 Start-up 2.4.3 Checks After Start-up 2.4.4 Shut-down 2.4.4.1 Emergency Shutdown Using EPO 2.4.4.2 Normal Shutdown 2.4.5 Isolation for Maintenance 2.4.5.1 Isolation of an Individual UPS Module 2.4.5.2 Isolation of Static Switch Cabinet (SSC) 2.4.5.2.1 Without Maintenance Bypass 2.4.5.2.2 With Maintenance Bypass 2.4.6 Forced Transfers 2.4.6.
User’s guide Illustrations figure description page 1-1 . . . . . . . . . . . . . . . Pictorial, Typical EPS 6000 UPS Shared Installation (Shown With Two 375 kVA UPS Modules) 1-2 . . . . . . . . . . . . . . . Single-Line Diagram, Typical EPS 6000 UPS Shared Installation 1-3 . . . . . . . . . . . . . . . EPS 6000 Major Internal Components, Shared 150 - 225 kVA UPS Modules 1-4 . . . . . . . . . . . . . . . EPS 6000 Major Internal Components, Shared 375 kVA UPS Modules 1-5 . . . . . . . . . . . . . . .
EPS 6000 UPS Shared Systems 2-9 . . . . . . . . . . . . . . . Single-Line Diagram, Typical EPS 6000 UPS Shared Installation 2-10 . . . . . . . . . . . . . . EPS 6000 Major Internal Components, Shared 150 - 225 kVA UPS Module 2-11 . . . . . . . . . . . . . . EPS 6000 Major Internal Components, Shared 300 / 375 kVA UPS Module 2-12 . . . . . . . . . . . . . . EPS 6000 Major Internal Components, Shared 500 kVA UPS Module I/O Cabinet 2-13 . . . . . . . . . . . . . .
User’s guide Tables table description page number 1-1 . . . . . . . . . . . . . . . EPS 6000 Model Numbers, Shared System UPS Modules 1—2 1-2 . . . . . . . . . . . . . . .
EPS 6000 UPS Shared Systems How to use this manual This manual is designed for ease of use and easy location of information. To quickly find the meaning of terms used within the text, look in the Glossary. This manual uses Noteboxes to convey important information.
Introduction 1.0 Scope This manual provides technical information required for operation and maintenance of the shared EPS 6000 uninterruptible power system (UPS). Please read this manual before operating the EPS 6000 equipment. Please retain this manual for future reference.
EPS 6000 UPS Shared Systems • EPS 6000 battery cabinet Each of these cabinets is described below. Figure 1-1 shows a typical shared UPS installation, consisting of one static switch cabinet (SSC), two UPS modules, and two adjacent battery cabinets. Figure 1-2 shows a single-line diagram of the same shared UPS installation. Table 1-1 identifies EPS 6000 UPS model numbers for modules used in shared systems, and Table 1-2 identifies EPS 6000 SSC model numbers.
User’s guide Figure P i c t o r i a l , Ty p i c a l E P S 6 0 0 0 U P S S h a r e d I n s t a l l a t i o n 1-1 ( S h ow n W i t h Two 3 7 5 k VA U P S M o d u l e s ) STATIC SWITCH CABINET (SSC) MAINTENANCE BYPASS CABINET (OPTIONAL) BATTERY CABINET AUXILIARY CABINET Figure 1-2 EPS 6000 UPS MODULE S i n g l e - L i n e D i a g r a m , Ty p i c a l E P S 6 0 0 0 U P S S h a r e d I n s t a l l a t i o n MAINTENANCE BYPASS AC INPUT STATIC SWITCH CABINET STATIC SWITCH MAINTENANCE BYPASS CABINET (OP
EPS 6000 UPS Shared Systems 1.2 Description of UPS Module Major Following is a description of the EPS 6000 UPS major internal components. Refer to the single-line diagram provided in Figure 1-2, and the component locators provided in Figure 1-3 through Figure 1-10 Internal Components 1.2.1 Rectifier/Battery Charger 1.2.2 Inverter 1.2.3 Inverter The inverter chops the DC voltage supplied from either the rectifier/battery charger or the battery system into a threephase AC voltage.
User’s guide 1.3 Description of SSC The static switch cabinet (SSC) provides an electrical path between the output of the UPS modules and the load. When the UPS modules are off, the SSC provides power to Major Internal the load from the bypass AC input source (mains 2). Up to six (6) modules can be connected to the SSC, supporting Components loads as great as 1,500 kVA. UPS modules may be turned off individually for maintenance, provided that the remaining modules can support the load.
EPS 6000 UPS Shared Systems Figure EPS 6000 Major Internal Components, 1-4 S h a r e d 3 7 5 k VA U P S M o d u l e s AC CAPACITOR ASSEMBLY 3 4 5 6 FANS (x 6) 1 FAN TRANSFORMER 2 FB9 TOP VIEW, COVER REMOVED FB1 TO FB8 FRONT VIEW, DOORS AND COVERS REMOVED FB1 FB2 FB3 FB4 F10,F11 RATED 2A,500VDC F12,F13 RAUZ PCA IBEZ PCA DC CAPACITORS (BEHIND EACH INVERTER) OBEZ PCA FB5 FB6 FB7 FB8 EPOZ 3 4 1 2 INVERTER FUSES (BEHIND) F23 TO F34 5 6 CHARGER, STATIC SW, BAIZ & TREZ (BEHIND PLATE) INV
User’s guide Figure EPS 6000 Major Internal Components, 1-5 S h a r e d 5 0 0 k VA U P S I / O C a b i n e t NEUTRAL CONNECTION GROUND CONNECTION TOP VIEW, COVERS REMOVED NEUTRAL CONNECTION FRONT VIEW, DOORS AND COVERS REMOVED INPUT CONNECTIONS GROUND CONNECTION A3 B3 C3 BATTERY CONNECTIONS OUTPUT CONNECTIONS A4 B4 C4 BONDING JUMPER SHUNT Q1 L2 Q5N CURRENT XFMRS INPUT FUSES F1,F2,F3 A12 B12 C12 A1 B1 C1 N12 ACPZ FUSES F16,F17 A2 C2 B2 ARUZ L4 L3 AC CAPACITORS Introduction 1—7
EPS 6000 UPS Shared Systems Figure EPS 6000 Major Internal Components, 1-6 S h a r e d 5 0 0 k VA U P S C a b i n e t AC CAPACITOR ASSEMBLY 3 FANS (x 8) 1 4 5 6 FAN TRANSFORMER 2 7 8 TOP VIEW, COVER REMOVED FB1 TO FB8 IBEZ FRONT VIEW, DOORS AND COVERS REMOVED EPOZ OBEZ 1 2 CHARGER & TREZ (BEHIND PLATE) 3 4 5 6 RAUZ DC CAPACITERS (BEHIND EACH INVERTER) INVERTERS (x6) AC OUTPUT CAPACITORS CARD CAGE: 1- GTCZ PCA 2- SRIZ PCA 3- CRIZ PCA 4- CROZ / DO6Z PCA 5- AROZ PCA 6- ALEZ PCA K3NZ APO
User’s guide Figure EPS 6000 Major Internal Components, 1-7 S h a r e d 7 5 0 k VA U P S C a b i n e t 1 Neutral Connection Ground Connection Choke Resistors Capacitors (-) (+) Bonding jumper Top view Ground Connection Input Connections A3 B3 C3 Output Connections A4 B4 C4 Battery Connections (+) (-) Relay Shunt Fuses Q5N Q1 (optional) CT (4ea) Input fuses F1, F2, F3 ARUZ ACPZ Power Interconnect Induction Filter (2 ea) one on other side CT (6ea) AC capacitors (2ea) one on other sid
EPS 6000 UPS Shared Systems Figure EPS 6000 Major Internal Components, 1-8 S h a r e d 7 5 0 k VA U P S C a b i n e t 2 AC CAPACITOR ASSEMBLY 3 4 5 6 FANS (x 8) 1 FAN TRANSFORMER FB9 2 7 8 TOP VIEW, COVER REMOVED FB1 TO FB8 FRONT VIEW, DOORS AND COVERS REMOVED DC CAPACITORS (BEHIND EACH INVERTER) FB1 FB2 FB3 FB4 FB5 FB6 FB7 FB8 3 4 1 2 5 6 INVERTER FUSES (BEHIND) F24,F26,F28,F30,F32,F34 INVERTERS (x6) ALBZ K3N F10,F11 K3NZ AC OUTPUT CAPACITORS STATIC SWITCH OUTPUT FUSES 1 — 10 NE
User’s guide Figure EPS 6000 Major Internal Components, 1-9 S h a r e d 7 5 0 k VA U P S C a b i n e t 3 AC CAPACITOR ASSEMBLY 3 4 5 6 FANS (x 8) 1 FAN TRANSFORMER 2 FB9 TOP VIEW, COVER REMOVED FB1 TO FB8 FRONT VIEW, DOORS AND COVERS REMOVED FB1 FB2 FB3 FB4 RAUZ PCA IBEZ PCA DC CAPACITORS (BEHIND EACH INVERTER) OBEZ PCA FB5 FB6 FB7 FB8 EPOZ 1 2 3 4 5 6 INVERTER FUSES (BEHIND) F24,F26,F28,F30,F32,F34 INVERTERS (x6) CARD CAGE: 1- GTCZ PCA 2- SRIZ PCA 3- CRIZ PCA 4- CROZ / DO6Z PCA 5- AR
1 — 12 Introduction PCA (AROZ) BYPASS PCA (SRIZ) FUSES (F11, F12, & F13) FAR SIDE OF PANEL PCA (GTCZ) STATIC SWITCH PCA (SSSZ) STATIC SWITCH Static Switch Cabinet (SSC) PCA (ALEZ) CIRCUIT BREAKER (Q5N) CIRCUIT BREAKER (Q3BP) 1-10 CARD CAGE UPS CIRCUIT BREAKER (Q2S) EPS 6000 Major Internal Components, PCA (PROZ) UPS PCA (CBOZ) MAINTENANCE BYPASS CABINET (WITH FRONT DOOR REMOVED) Figure PCA (IBEZ) CAPACITORS (C11, C12, & C13) FAR SIDE OF PANEL PCA (OBEZ) PCA (ACPZ) PCA (RAUZ) PCA (A
User’s guide 1.4 Options This section describes options available for the EPS 6000 UPS. Some configurations do not support some options. Most options must be specified at the time of equipment order; some options can be installed in the field. Contact your MGE dealer for complete information. Additional battery cabinets Up to a maximum of four battery cabinets can be supplied for a single EPS 6000 UPS module, making additional back-up time available during power outages.
EPS 6000 UPS Shared Systems AC output ratings Voltage: Frequency: Phases: Wires: Current: rating in kVA 150 22 5 300 375 50 0 75 0 Amperes @ 480 VAC 180 271 36 1 45 1 60 1 90 2 Power factor: Total harmonic distortion (THD): Dynamic regulation: Dynamic response: Overload: DC ratings Battery voltage: 1.5.2 480 VAC ± 0.5% (steady-state conditions) 480 VAC ± 5% (transient conditions from 0% to 100% or 100% to 0%) 60 Hz ± 0.
User’s guide 1.5.3 Environmental Recommended environment: 20° to 25° C (68° to 77° F.); 50% relative humidity; computer room or other temperature- and humiditycontrolled environment Operating temperature: 0° to 40° C (32° to 104° F.) except battery Storage: -20° to 50° C (-4° to 122° F.
EPS 6000 UPS Shared Systems 1.6.2 Mechanical Height: Depth: Width: Weight: Finish: 1 — 16 1,981 mm/78 in. 1,219 mm/48 in. 1,829 mm/72 in. 1,310 kg/2,900 lbs. (SSC) 1,091 kg/2,000 lbs.
Operation 2.0 Scope 2.1 System Operation This section presents operating information for EPS 6000 UPS shared systems, including an overview of the system, its components, and their function; a description of the indicators and controls and their function; and operational sequences to be followed for all conditions of normal, emergency, and maintenance operation. This section presents an overview of system operation. Overview 2.1.
EPS 6000 UPS Shared Systems 2.1.2 2.1.3 Normal Operation During normal operation (as shown in Figure 2-1), power flows from the main AC input source (mains 1) into the UPS rectifier/battery charger sections. The rectifier/battery chargers convert the AC voltage to DC, maintain the charge on the batteries, and feed the DC power to the inverters. The inverters regenerate AC voltage, and supply the SSC’s UPS module AC output bus. The SSC supplies the attached load.
User’s guide Figure Pow e r F l ow, B y p a s s O p e r a t i o n Q2S 2-3 Bypass AC input (mains 2) Static switch Rectifier/battery charger Inverter TO ATTACHED LOAD Static switch cabinet (SSC) Main AC input (mains 1) Battery UPS module Rectifier/battery charger Inverter Battery UPS module Additional modules 2.2 Indicators and 2.2.
EPS 6000 UPS Shared Systems Figure E P S 6 0 0 0 C o n t ro l s a n d I n d i c a t o rs 2-4 Front panel Circuit breakers and switches behind cabinet door Alphanumeric display Hidden panel Cover Figure E P S 6 0 0 0 F ro n t Pa n e l 2-5 Note: The SSC does not include inverter on or inverter off pushbuttons #6 and #7, or the battery operation LED #4.
User’s guide Emergency power off (EPO) CAUTION P r e s s i n g t h e E P O d i s c o n n e c t s t h e a t t a ch e d l o a d . The emergency power off (EPO) is to be used dur ing em e rg ency situations only, where a hazard to personne l or equipment exists, such as during a fir e . DO NOT U S E TH E E P O TO TU R N TH E U P S ON O R O F F ; f o l l o w t h e p ro c e d u r e s l i s t e d i n t h i s section for turning on and off the inver ter.
EPS 6000 UPS Shared Systems ⁄ ı Í Operating problem LED (3) This orange LED turns on when an operating problem exists, such as fan failure; static switch power supply fault; battery temperature fault; overload fault; or bypass AC input (mains 2) out of tolerance. The UPS continues to protect the attached load. Battery operation LED (4) (UPS modules only) This orange LED turns on to indicate that the attached load is being partially or completely supplied by the battery.
User’s guide Pushbuttons Following are brief descriptions of the function of the alphanumeric display pushbuttons. Figure A l p h a n u m e r i c D i s p l ay a n d C o n t ro l s LCD display 2-6 LOAD IS PROTECTED UPS IS ON LINE 1 2 3 4 5 6 7 8 V ø ˘ ◊ Å ˘ pushbutton Settings pushbutton A W.Hz +– ! * Settings pushbutton This pushbutton is used to select the display language and adjust the LCD screen contrast for optimal viewing.
EPS 6000 UPS Shared Systems • Inverter current • Load current • Percent current drawn by the load relative to UPS module or SSC rating • Crest factor per phase „ Pushbutton This pushbutton provides access to power and frequency measurements, including: ı ⁄ • Main AC input (mains 1) frequency • Bypass AC input (mains 2) frequency • Inverter frequency • Power drawn by the load (in kW and kVA) • Load power factor Battery pushbutton This pushbutton provides access to battery measurements,
User’s guide Numbered lights The green light indicates the UPS module or SSC with which the display is currently communicating. A red light indicates that the corresponding UPS module or SSC has an anomaly or is not communicating with the display. Light #1 refers to the SSC; the UPS modules are numbered sequentially starting at #2. 2.2.3 Hidden Panel Figure H i d d e n Pa n e l The hidden panel is located directly below the front panel, behind the hinged cover, as shown in Figure 2-4.
EPS 6000 UPS Shared Systems B: Rectifier/charger on This green LED indicates that the rectifier/battery charger is on. C: Rectifier/charger fault This red LED indicates an alarm condition within the rectifier/battery charger.
User’s guide J: Inverter desynchronized This orange LED indicates that the inverter output frequency is not synchronized with the bypass AC input (mains 2).
EPS 6000 UPS Shared Systems Figure 2-8 H i d d e n Pa n e l P u s h bu t t o n s Clear Battery fault log charge cycle pushbutton pushbutton Inverter desync/sync pushbutton Forced inverter to bypass pushbutton Security (key) pushbutton A B C D E F G H I J K L M N fault Test connector Audible alarm reset 1 2 Return to float voltage pushbutton 3 4 5 Forced bypass to inverter pushbutton Battery charge cycle (pushbutton #1) (applies to UPS module only) Pressing this pushbutton begins a battery cha
User’s guide Forced bypass to inverter (pushbutton #4) (applies to SSC only) Pressing and holding the “security key” while pressing this pushbutton forces the transfer of the load to the inverter output when the bypass is out of tolerance. Enough UPS modules must have been started; press the “inverter on” pushbutton on their front panels if necessary. The load will experience a 0.8 second interruption. Refer to Section 2.4.2, Start-up, and Section 2.4.6, Forced Transfers.
EPS 6000 UPS Shared Systems attached load.
User’s guide Figure EPS 6000 Major Internal Components, 2-10 S h a r e d 1 5 0 - 2 2 5 k VA U P S M o d u l e AC CAPACITOR ASSEMBLY 3 4 5 6 FANS (x 6) 1 FAN TRANSFORMER 2 FB9 TOP VIEW, COVER REMOVED FB1 TO FB8 FRONT VIEW, DOORS AND COVERS REMOVED FB1 FB2 FB3 FB4 F10,F11 RATED 2A,500VDC F12,F13 RAUZ PCA IBEZ PCA DC CAPACITORS (BEHIND EACH INVERTER) OBEZ PCA FB5 FB6 FB7 FB8 INVERTER FUSES (BEHIND) EPOZ CHARGER, STATIC SW, BAIZ & TREZ (BEHIND PLATE) INVERTERS OUTPUT FUSES F7, F8, F9 ALBZ
EPS 6000 UPS Shared Systems Figure EPS 6000 Major Internal Components, 2-11 S h a r e d 3 0 0 / 3 7 5 k VA U P S M o d u l e AC CAPACITOR ASSEMBLY 3 4 5 6 FANS (x 6) 1 FAN TRANSFORMER 2 FB9 TOP VIEW, COVER REMOVED FB1 TO FB8 FRONT VIEW, DOORS AND COVERS REMOVED FB1 FB2 FB3 FB4 F10,F11 RATED 2A,500VDC F12,F13 RAUZ PCA IBEZ PCA DC CAPACITORS (BEHIND EACH INVERTER) OBEZ PCA FB5 FB6 FB7 FB8 EPOZ 3 4 1 2 INVERTER FUSES (BEHIND) F23 TO F34 5 6 CHARGER, STATIC SW, BAIZ & TREZ (BEHIND PLAT
User’s guide Figure EPS 6000 Major Internal Components, 2-12 S h a r e d 5 0 0 k VA U P S M o d u l e I / O C a b i n e t NEUTRAL CONNECTION GROUND CONNECTION TOP VIEW, COVERS REMOVED NEUTRAL CONNECTION FRONT VIEW, DOORS AND COVERS REMOVED INPUT CONNECTIONS GROUND CONNECTION A3 B3 C3 BATTERY CONNECTIONS OUTPUT CONNECTIONS A4 B4 C4 BONDING JUMPER SHUNT Q1 L2 Q5N CURRENT XFMRS INPUT FUSES F1,F2,F3 A12 B12 C12 A1 B1 C1 N12 ACPZ FUSES F16,F17 A2 C2 B2 ARUZ L4 L3 AC CAPACITORS Operati
EPS 6000 UPS Shared Systems Figure EPS 6000 Major Internal Components, 2-13 S h a r e d 5 0 0 k VA U P S M o d u l e U P S C a b i n e t AC CAPACITOR ASSEMBLY 3 FANS (x 8) 1 4 5 6 FAN TRANSFORMER 2 7 8 TOP VIEW, COVER REMOVED FB1 TO FB8 IBEZ FRONT VIEW, DOORS AND COVERS REMOVED EPOZ OBEZ 1 2 CHARGER & TREZ (BEHIND PLATE) 3 4 5 6 RAUZ DC CAPACITERS (BEHIND EACH INVERTER) INVERTERS (x6) AC OUTPUT CAPACITORS CARD CAGE: 1- GTCZ PCA 2- SRIZ PCA 3- CRIZ PCA 4- CROZ / DO6Z PCA 5- AROZ PCA 6-
User’s guide Figure EPS 6000 Major Internal Components, 2-14 S h a r e d 7 5 0 k VA U P S M o d u l e U P S C a b i n e t 1 Neutral Connection Ground Connection Choke Resistors Capacitors (-) (+) Bonding jumper Top view Ground Connection Input Connections A3 B3 C3 Output Connections A4 B4 C4 Battery Connections (+) (-) Relay Shunt Fuses Q5N Q1 (optional) CT (4ea) Input fuses F1, F2, F3 ARUZ ACPZ Power Interconnect Induction Filter (2 ea) one on other side CT (6ea) AC capacitors (2e
EPS 6000 UPS Shared Systems Figure EPS 6000 Major Internal Components, 2-15 S h a r e d 7 5 0 k VA U P S M o d u l e U P S C a b i n e t 2 AC CAPACITOR ASSEMBLY 3 4 5 6 FANS (x 8) 1 FAN TRANSFORMER FB9 2 7 8 TOP VIEW, COVER REMOVED FB1 TO FB8 FRONT VIEW, DOORS AND COVERS REMOVED DC CAPACITORS (BEHIND EACH INVERTER) FB1 FB2 FB3 FB4 FB5 FB6 FB7 FB8 3 4 1 2 5 6 INVERTER FUSES (BEHIND) F24,F26,F28,F30,F32,F34 INVERTERS (x6) ALBZ K3N F10,F11 K3NZ AC OUTPUT CAPACITORS STATIC SWITCH OUTPU
User’s guide Figure EPS 6000 Major Internal Components, 2-16 S h a r e d 7 5 0 k VA U P S M o d u l e U P S C a b i n e t 3 AC CAPACITOR ASSEMBLY 3 4 5 6 FANS (x 8) 1 FAN TRANSFORMER 2 FB9 TOP VIEW, COVER REMOVED FB1 TO FB8 FRONT VIEW, DOORS AND COVERS REMOVED FB1 FB2 FB3 FB4 RAUZ PCA IBEZ PCA DC CAPACITORS (BEHIND EACH INVERTER) OBEZ PCA FB5 FB6 FB7 FB8 EPOZ 1 2 3 4 5 6 INVERTER FUSES (BEHIND) F24,F26,F28,F30,F32,F34 INVERTERS (x6) CARD CAGE: 1- GTCZ PCA 2- SRIZ PCA 3- CRIZ PCA 4-
EPS 6000 UPS Shared Systems Figure EPS 6000 Major Internal Components, 2-17 Static Switch Cabinet (SSC) STATIC SWITCH CABINET (WITH FRONT DOORS REMOVED) TRANSFORMER (T12) MAINTENANCE BYPASS CABINET (WITH FRONT DOOR REMOVED) PCA (CBOZ) CIRCUIT BREAKER (Q2S) FUSES (F1, F2, F3, & F4) UPS UPS BYPASS BYPASS ROTARY SWITCHES (SW1, & SW2) TRANSFORMER (T13) FAR SIDE OF PANEL PCA (EPOZ) CIRCUIT BREAKER (Q3BP) PCA (ACOZ) PCA (RAUZ) PCA (ACPZ) PCA (OBEZ) CAPACITORS (C11, C12, & C13) FAR SIDE OF PANEL PCA
User’s guide 2.3 Using the This section describes operation and use of the alphanumeric display in detail. Alphanumeric The alphanumeric display interacts with the user via the top half of the hidden panel (Figure 2-4). Figure 2-18 shows the general organization of the alphanumeric display.
EPS 6000 UPS Shared Systems Figure G e n e r a l D i s p l ay C o n f i g u r a t i o n 2-19 General status screen. This is the default display. It automatically reappears if the control panel has not been used for ten minutes. ! Alarm display V Voltage measurements A Current measurements W.Hz Frequency and power measurements +– Battery measurements Reserved for future use (on/off controls) * to confirm Language and screen contrast settings to set 2.3.
User’s guide IMPORTANT S e l e c t E N G L I S H U. S . a s t h e d i s p l ay l a n g u a g e t o m atch the d isplays as presented in this manual. 2.3.2 Alarms In the event of an alarm condition, the general status screen shows an alarm message. To determine the specific condition causing the alarm, press the alarm key on the front panel, as shown in Figure 2-21. If there is a flashing exclamation mark (!) in the displayed message, there is additional information to be viewed.
EPS 6000 UPS Shared Systems 2.3.3 Measurements The LCD can display comprehensive information about UPS performance through its monitoring functions. 2.3.3.1 Voltage To display voltage measurements, press the “V” key on the keyboard, as shown in Figure 2-22. Measurements Figure Vo l t a g e M e a s u r e m e n t s 2-22 Select voltage measurements by pressing the ◊ pushbutton ◊ (Only in UPS modules) INPUT V RMS VAB VBC VCA Main input (mains 1) phase-to-phase voltages in VAC RMS.
User’s guide To display current measurements, press the “A” key on the keyboard, as shown in Figure 2-23. Figure Current Measurements 2-23 Select current measurements by pressing the Å pushbutton Å (Only in UPS modules) INPUT A RMS I1 I2 I3 Main input (mains 1) currents in AAC RMS. I2 I3 Bypass input (mains 2) currents in AAC RMS. I2 I3 Inverter output currents in AAC RMS. I2 I3 Load currents in AAC RMS. Å (only in SSC) BYPASS A RMS I1 Å (only in UPS modules) INV.
EPS 6000 UPS Shared Systems 2.3.3.3 Power and To display power or frequency measurements, press the “W.Hz” key on the keyboard, as shown in Figure 2-24. Frequency Measurements Figure Pow e r a n d F r e q u e n c y M e a s u r e m e n t s 2-24 Select power and frequency measurements by pressing the „ pushbutton. „ FREQ. HZ INP. BYP. INV. P2 P3 Frequency in Hertz for the main input (mains 1), bypass input (mains 2), and inverter output.
User’s guide To display battery voltage, current, ambient temperature, and time available or remaining, press the battery key on the keyboard, as shown in Figure 2-25. Figure 2-25 Battery Measurements Select battery measurements by pressing the "battery" pushbutton. ı UBAT. V * T ° BAT. C IBAT. A ı Baattery voltage (VDC), charge (+) or discharge (–) current (ADC), and battery temperature (degrees Celsius). OR AVAILABLE BAT.
EPS 6000 UPS Shared Systems In the individual UPS modules: • Input (isolation) circuit breaker Q1 is in the OFF (open) position. • Battery disconnect circuit breaker QF1 is in the OFF (open) position. • Output isolation circuit breaker Q5N is in the OFF (open) position. In the SSC: 2.4.2 • System maintenance bypass circuit breaker Q3BP is in the OFF (open) position (if present). • System output isolation circuit breaker Q5N is in the OFF (open) position (if present).
User’s guide d. Start the UPS modules: 1. For each module, close the input isolation circuit breaker Q1. Verify that the following conditions exist: • The red “load not protected” LED is on • The rectifier/battery charger automatically starts If either condition is not present, there is a fault. Open Q1 and contact MGE Customer Support Services. 2. For each module, close the UPS isolation circuit breaker Q5N. The fans in the UPS module will start. 3.
EPS 6000 UPS Shared Systems 2.4.4 • Remote emergency power off (REPO) test (if applicable). • Inverter start and stop (for each module). • Battery transfer test. • Maintenance bypass procedure. Shut-down This section presents procedures for shutting down the system under normal, emergency, overload, and maintenance conditions. 2.4.4.1 Emergency Shutdown Using EPO CAUTION P r e s s i n g t h e E P O d i s c o n n e c t s t h e a t t a ch e d l o a d .
User’s guide To shut down an individual UPS module, press the “inverter off” pushbutton on the module front panel for 3 seconds. To restart, press the “inverter on” pushbutton. Note that the transfer will occur only if the inverter is synchronized to the bypass; otherwise, a forced transfer is needed (see Section 2.4.6).
EPS 6000 UPS Shared Systems IMPORTANT W hen one UPS module in a shared system is shut dow n, it m ay cause the remaining modules to enter a n ov e r l o a d o r c u r r e n t - l i m i t i n g c o n d i t i o n , i f t h ey ar e unable to fully suppor t the attached load. The r em aining m odul es may shut down after a cer tain tim e or im m ediately (depending on the load level), and the load m ay be transferred to the bypass AC input source . 2. Open the UPS isolation circuit breaker Q5N. 3.
User’s guide 2.4.5.2 Isolation of Static Switch To isolate the SSC for maintenance, or to transfer the load to maintenance bypass input source (if present), follow the procedure that applies to your configuration. Cabinet (SSC) 2.4.5.2.1 Without Maintenance This procedure assumes that the UPS system is operating normally, with the attached load supplied via the UPS modules. Bypass 1. Isolate all the UPS modules by following the procedure in Section 2.4.5.1. 2.
EPS 6000 UPS Shared Systems The whole UPS system is now isolated for maintenance. For complete protection, Q4S or the upstream circuit breaker supplying Q4S should be locked open and tagged while the UPS is being serviced. To restart the UPS system after maintenance: 2.4.6 1. Close the upstream bypass circuit breaker Q4S. After about 10 seconds, the wraparound circuit breaker Q2S will close. 2. Close the system isolation circuit breaker Q5N. 3.
User’s guide 2.4.6.2 Forced Transfer This procedure assumes that the load is being supplied by the bypass AC input (mains 2) source via the SSC. From Bypass AC Input Source to Inverter Start the UPS modules (refer to Section 2.4.2, steps d1 to d4). On the SSC hidden panel, press the “security” key (Figure 2-8, “key” pushbutton) and hold it while pressing the “forced bypass to inverter” key (pushbutton #4). If enough modules are on, the load will be disconnected for 0.
EPS 6000 UPS Shared Systems General alarms LOW LEVEL ALARM UPS OK ! This message indicates that a problem requiring action has occurred. The load is still supplied by the inverter. The problem is listed in the secondary alarm message (see below), as indicated by the flashing exclamation mark (!). The alarm message may be viewed by pressing the “alarm” pushbutton (!).
User’s guide LOAD ON BYPASS ! This message indicates that the load has been transferred to the bypass AC input (mains 2) source. The load is no longer protected. BYPASS PROBLEM CHECK FREQUENCY ! This message indicates that the bypass AC input (mains 2) source is out of frequency tolerance. The inverter has switched to free-running mode. Transfer of the load from the inverter output to the bypass AC input source requires an interruption of power to the load.
EPS 6000 UPS Shared Systems CHARGER SHUTDOWN COMMAND ON ! This message indicates that the rectifier/battery charger has been instructed to shut down, for example during progressive (stepped) transfer to a motor-generator set. INPUT KVA LIMITED COMMAND ON ! This message indicates that the rectifier/battery charger has been instructed to limit the power drawn from the main AC input (mains 1) source.
User’s guide INVERTER OVERLOAD CHECK P.F. AND KW This message indicates that the inverter is in an overload condition, usually due to excessive real power (kW) being drawn by the load. The flashing “KW” indicates that the operator should check the load real power. The inverter will keep supplying the load for a certain amount of time depending on the overload level. INVERTER FAULT CALL SERVICE ! This message indicates that a fault has occurred in the inverter, and that service is required.
EPS 6000 UPS Shared Systems Q5N UPS OUTPUT ISOL. SWITCH OPEN ! On a UPS module, this message indicates that the UPS module isolation circuit breaker Q5N is open, making it impossible for that module to supply the load. On the SSC, this message signals that the system isolation circuit breaker Q5N in the MBC is open, and the load is not supplied unless the maintenance bypass circuit breaker Q3BP is closed. Q3BP MAINT.
User’s guide FAN FAILURE CALL SERVICE ! This message indicates that a fan has failed, and that service is required. Because the fans of the rectifier/battery charger and the inverter are redundant, the load is still supplied by the inverter. AUXILIARY CABINET FAULT CALL SERVICE ! This message indicates that there is a fault in an auxiliary cabinet, and that service is required.
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Maintenance and Service 3.0 Scope 3.1 Safety Instructions This section describes maintenance of the EPS 6000 UPS, including safety instructions, preventive maintenance, descriptions of replacement parts kits, and service. IMPORTANT SAFETY INSTRUCTIONS FOR SERVICING BATTERIES A. Servicing of batteries should be performed or supervised by personnel knowledgeable of batteries and the required precautions. Keep unauthorized personnel away from batteries. B.
EPS 6000 UPS Shared Systems 3.3 a. Isolate and de-energize all EPS 6000 UPS equipment for all maintenance operations. b. Ensure that all equipment is clean and free of loose dust, dirt, and debris. The exterior of all enclosures may be cleaned with a mild solution of soap and water, lightly applied with a lint-free cloth. c. Inspect the air intake and exhaust plates and clean as required. Verify that air flows freely through the equipment.
User’s guide 3.4 Troubleshooting and MGE Servicing Should you encounter a problem in the operation of a UPS module and need MGE UPS Systems, Inc. to service your product, please take into account the following recommendations. To the extent that you feel comfortable with the unit, leave it in its current state, make a record of the display lights and alarm messages and call either your local MGE Field Engineer or MGE’s Customer Support Services at 1-800-438-7373 for assistance.
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Glossary Symbols ¶ Used to reference paragraph headings that are listed in the table of contents. / Used to represent “and/or.” % Percent; of each hundred. ° F. Degrees Fahrenheit. °C Degrees Celsius. @ At. ± Plus or minus. # Number. Ø Phase. Ω Ohms. 2nd Second. A, B, C Normal sequence of phases (clockwise) in three-phase power. AC or ac Alternating current. Alphanumeric display The LCD display above the hidden panel (behind the drop-down cover) on the UPS module and the SSC.
EPS 6000 UPS Shared Systems B or BAT. or BATT. Battery. Breaker Circuit breaker. British Thermal Unit A unit of heat equal to 252 calories (see BTU). BTU or Btu British thermal unit. Defined as the amount of energy required to raise the temperature of 1 pound of water by 1° F. BYP Bypass. BYPASS Maintenance bypass; wrap-around manual maintenance bypass using the optional bypass circuit breaker Q3BP in conjunction with circuit breaker Q4S and isolation circuit breaker Q5N.
User’s guide Free running Indicates that the inverter frequency is stable and independent of the bypass AC input (mains 2) frequency. FREQ Frequency. Fusible Capable of being melted with heat. GND Ground Hz Hertz, a measure of frequency; one cycle per second equals one Hertz. I Current. Input branch circuit The input circuit from the building power panel to the equipment. Inverter An electrical circuit that generates an AC sinewave output from a DC input.
EPS 6000 UPS Shared Systems MCM Thousand circular mil; standard wire sizes for multiple stranded conductors over 4/0 AWG in diameter. M is from the Roman numeral system; it is the symbol for 1,000. MG Motor-generator set. MGE MGE UPS Systems, Inc. module Refers to an EPS 6000 UPS module (rectifier/battery charger, inverter, and attached battery cabinet). MOV Metal-oxide varistor. NEC National electrical code. NFPA National fire protection association. NO. or No. Part number.
User’s guide Remote emergency power off A switch used for shutting down electrical equipment from a location away from the equipment. REPO Remote emergency power off. SCR Silicon-controlled rectifier. Security bypass (key) Pushbutton on the hidden panel (UPS modules and SSC) allowing forced transfers and other commands to be issued. The security key pushbutton must be held down while the desired function is executed. SEQ Sequence.
EPS 6000 UPS Shared Systems g—6 VDC Volts of direct current. Via By way of. VPC Volts per cell, the measure of the electrical potential of a storage cell, such as a battery. XFMR Transformer.
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