GE 750 UL S2 User Manual
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GE 750 UL S2 User Manual

GE 750 UL S2 User Manual

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GE Digital Energy
Power Quality
User Manual
Uninterruptible Power supply
SG Series 750 UL S2
SG Series 750 T12 UL S2
750 kVA / 480Vac UL / S2
GE Consumer & Industrial SA
General Electric Company
CH – 6595 Riazzino (Locarno)
Switzerland
T +41 (0)91 / 850 51 51
F +41 (0)91 / 850 52 52
www.gepowerquality.com
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  • Page 1 GE Digital Energy Power Quality User Manual Uninterruptible Power supply SG Series 750 UL S2 SG Series 750 T12 UL S2 750 kVA / 480Vac UL / S2 GE Consumer & Industrial SA General Electric Company CH – 6595 Riazzino (Locarno)
  • Page 2 The present publication and any other documentation supplied with the UPS system is not to be reproduced, either in part or in its entirety, without the prior written consent of GE. The illustrations and plans describing the equipment are intended as general reference only and are not necessarily complete in every detail.
  • Page 3 General Electric Company Bonham, TX 75418 CH – 6595 Riazzino (Locarno) T: +1 800-637-1738 Switzerland F: +1 903-640-0533 www.gepowerquality.com E: GEPQSales@ge.com http://www.gedigitalenergy.com/ups Modifications reserved Page 3/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 4 UPS. While every care has been taken to ensure the completeness and accuracy of this manual, GE assumes no responsibility or liability for any losses or damages resulting from the use of the information contained in this document.

  • Page 5: Table Of Contents

    7.2.7 Restore to normal operation after “Load Off”..........................64 7.2.8 Restore to normal operation after EPO (Emergency Power Off) ..................65 Modifications reserved Page 5/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 6 UPS room conditions and temperature............................70 9.1.7 Long shut-down periods of the UPS-system ..........................70 10 NOTES................................71 10.1 NOTES FORM......................................71 Modifications reserved Page 6/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 7: Important Safety Instructions

    When working with batteries, remove watches, rings or other metal objects, and only use insulated tools. In case of air shipment, the cables +/- going to the battery fuses/terminals shall be disconnected and isolated. Modifications reserved Page 7/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 8 10 If you are replacing the battery or repairing battery connections, shut OFF the UPS and remove the battery fuses. Modifications reserved Page 8/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 9 This symbol indicates the principal on/off switch in the on position. This symbol indicates the principal on/off switch in the off position. Modifications reserved Page 9/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 10: Layout

    Fig. 2.1-4 Q1 UPS Output Switch Fig. 2.1-2 SG Series 750 & SG Series 750 T12 general view with open door Modifications reserved Page 10/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 11: Introduction

    Tailor made power protection to meet your individual installation requirements; SG Series 750 & SG Series 750 T12 offer various options like input harmonic filters and our comprehensive GE Power Diagnostic software suite for mission control and data protection to cover all your application needs.

  • Page 12: Description

    External Maintenance Bypass (option). Battery The Battery supplies the DC power to the Inverter when the Utility is out of accepted tolerances. Modifications reserved Page 12/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 13: Operation Modes

    UPS control panel (see Section 7.4 / eBoost). NOTE ! The eBoost™ Operation Mode is available only if enabled at the factory or by a GE GLOBAL SERVICES FIELD ENGINEER. Modifications reserved Page 13/71 OPM_SGS_USM_M75_M75_2US_V010.doc...

  • Page 14: Utility Failure Operation

    When enough Inverters to supply the Load have been restarted, the Load will be transferred from the Automatic Bypass back to the Inverter output. Modifications reserved Page 14/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 15: Automatic Bypass

    If the Inverter of a unit fails, its Bypass circuit remains available to the Parallel System. It is excluded only if the unit is separated from the common bus by opening its output switch Q1. Modifications reserved Page 15/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 16: Parallel System Operation

    This results higher reliability and security for the Load plus a higher MTBF (Mean Time Between Failures). Modifications reserved Page 16/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 17: Features Of Rpa Parallel System

    Load common bus bars. However, it is recommended that a disconnect or isolation switch be inserted. Modifications reserved Page 17/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 18: Rectifiers Paralleled On The Same Battery

    Do not connect the temperature sensor for automatic battery floating voltage compensation. • Do not enable the function Boost charge (parameter 87). Modifications reserved Page 18/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 19: Recycling At The End Of Service Life

    Leads contained in the batteries is a dangerous substance for the environment, therefore it must be correctly recycled by specialized companies! Modifications reserved Page 19/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 20: Control Panel

    Swedish, Russian and Dutch; − Synoptic diagram indicating UPS status. Command pushbuttons and parameters setting. • UPS status control LED. • Modifications reserved Page 20/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 21: Table Of Functions And Indications On Control Panel

    (UPS Output Switch Q1 closed). NOTE ! Special care must be taken in using this command, in order to avoid accidental load disconnection. Modifications reserved Page 21/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 22 History of events (alarms and messages). • Functionality can be programmed to meet • customer needs by changing parameters. Operation commands of the UPS. • Modifications reserved Page 22/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 23: Lcd Screen

    It is possible to view any pushbutton functional description by pushing the button for more than 3 seconds. Pushing the pushbuttons “METER” (1 button) and “ALARM” (2 button) together automatically sets the LCD communication for “ENGLISH”. Modifications reserved Page 23/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 24 Load supplied by eBoost™ Operation Mode (option) When the Load is supplied by eBoost™ Operation Mode the “eBoost” text is displayed. Modifications reserved Page 24/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 25: Metering

    60 Hz 275 V 279 V 3-phase utility voltage PHASE /NEUTRAL. 276 V BYPASS FREE Bypass Bypass status: FREE / LOCKED. Modifications reserved Page 25/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 26 - LOAD ON INVERTER - Q1 OPEN - LOAD ON BYPASS - LOAD OFF - LOAD ON BYPASS (eBoost) - ON BATTERY Modifications reserved Page 26/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 27 70 % The statistic evaluation in % (100= good; 0= bad) of the utility, for the eBoost™ Operation Mode. Modifications reserved Page 27/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 28: Alarms

    Confirm the selection made. It is possible to view any pushbutton functional description by pushing the button for more than 3 seconds. The events displayed are the standard GE events as described in the Section 6.3.1 - EVENTS (Alarms and Messages). Home\ Alarm...

  • Page 29: Events (Alarms And Messages)

    Only alarm is given. 4105 RECTIFIER OVERTEMPERATURE The Rectifier, when in Off state, cannot start as long as this condition persists. Modifications reserved Page 29/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 30 With Utility OK, Load is transferred on Utility. Blown input DC fuse(s) F1 of the Inverter. 4308 DC FUSES FAILURE Inverter cannot be started as long as present. Modifications reserved Page 30/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 31 Customer Interface Board. 4563 EMERGENCY OFF ACTIVATED Consequently K4, K6, K7 open, Rectifier, Inverter and SSM are switched Off. Modifications reserved Page 31/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 32 Load Off after time-out of “stop operation” with missing LOAD OFF DUE Utility due to Battery low voltage or over-temperature 4999 TO LOW BATT. OR TEMP. condition. Modifications reserved Page 32/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 33: Messages List

    EPO / Load Off / Overload / Stop Operation. With the Load supplied by Automatic Bypass, a Utility 4521 NO BYPASS POWER Failure or K6 opening occurred. Modifications reserved Page 33/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 34 Customer Interface Board (X1 - 11, 22) received an eBoost/IEMi control signal. 4607 eBoost ACTIVATION INHIBITED eBoost™ Operation Mode and IEMi Operation Mode will be temporarily inhibited. Modifications reserved Page 34/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 35 (Service only): 4764 REMOTE CONTROL OFF 0 = Only Local Panel. 1 = Only Remote Control. 2 = Both. Modifications reserved Page 35/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 36: Event Report Sg Series 750 & Sg Series 750 T12

    ..............................................Modifications reserved Page 36/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 37: Setup

    UPS SW Version Display SW Version : UPS SW The UPS software version. Display SW The LCD display software version. Modifications reserved Page 37/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 38 If the desired number is shorter than 40 characters, the string will finish with blanks. Tel 1 enabled This parameter Y/N specifies if the first telephone number (Tel 1) will be used for dial-out. Modifications reserved Page 38/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 39 Print All This parameter Y/N is used to print all the available information in the sequence metering, alarms, user and service parameters. Modifications reserved Page 39/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 40 The number of eBoost™ Operation Mode hours per weekday (from d1 - Saturday to d7 - Friday) is displayed in the operation mode parameter window (ceiling value). Modifications reserved Page 40/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 41 Note that on day d6 - Thursday the interval has length 0 (zero), therefore the eBoost™ Operation Mode is not enabled on this day. Modifications reserved Page 41/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 42 NOTE ! The eBoost™ Operation Mode will become active only if the Load is supplied from the Inverter. Modifications reserved Page 42/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 43: Commands

    “Load Off” is finished the “REQUEST TOTAL OFF” REQUEST TOTAL OFF CANCEL TOTAL OFF screen appears again. EXECUTE TOTAL OFF Modifications reserved Page 43/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 44: Operation

    PROCEDURES FOR SINGLE SG Series 750 & SG Series 750 T12 PROCEDURES FOR SG Series 750 & SG Series 750 T12 PARALLEL SYSTEM Modifications reserved Page 44/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 45: Procedures For Single Sg Series 750 & Sg Series 750 T12

    LED 1 (Utility Rectifier OK) and LED 2 (Utility Bypass OK) must be ON. The buzzer sounds, press the “MUTE” key to reset acoustical alarm. LED Alarm remains lit. Continue ► Modifications reserved Page 45/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 46 Inverter voltage Inverter output frequency value (default 60 Hz). Inverter voltage Output voltage PHASE/NEUTRAL of the inverter (default 277V). Continue ► Modifications reserved Page 46/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 47 Any additional modification of setup parameters can be done only from a GE SERVICE PERSON as it requires an access code. ► Continue Modifications reserved Page 47/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 48 The Battery must be charged for at least 10 hours, in order to ensure the full backup runtime in case of a Utility Failure. Modifications reserved Page 48/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 49: Ups Shutdown With Load Transfer On External Maintenance Bypass (Option)

    It will take a minimum of 5 minutes for the DC capacitors to discharge. Open only the front door, do not open any other part of the UPS. Modifications reserved Page 49/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 50: From External Maintenance Bypass (Option) To Normal Function Vfi

    LED Alarm turn Off and the LED Operation must be lit. The Synoptic Diagram must display the status “LOAD SUPPLIED BY INVERTER”. END OF PROCEDURE Modifications reserved Page 50/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 51: Complete Ups Shutdown

    4. Disconnect the Utility from the input distribution. • Complete power shutdown will OFF the LCD Display Panel. END OF PROCEDURE Modifications reserved Page 51/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 52: Restore To Normal Operation After "Load Off

    LED Alarm turn Off and the LED Operation must be lit. The Synoptic Diagram must display the status “LOAD SUPPLIED BY INVERTER”. END OF PROCEDURE Modifications reserved Page 52/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 53: Restore To Normal Operation After Epo (Emergency Power Off)

    LED Alarm turn Off and the LED Operation must be lit. The Synoptic Diagram must display the status “LOAD SUPPLIED BY INVERTER”. END OF PROCEDURE Modifications reserved Page 53/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 54: Procedures For Sg Series 750 & Sg Series 750 T12 Parallel System

    LED 1 (Utility Rectifier OK) and LED 2 (Utility Bypass OK) must be ON. The buzzer sounds, press the “MUTE” key to reset acoustical alarm. LED Alarm remains lit. Continue ► Modifications reserved Page 54/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 55 Inverter voltage Inverter output frequency value (default 60 Hz). Inverter voltage Output voltage PHASE/NEUTRAL of the inverter (default 277V). Continue ► Modifications reserved Page 55/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 56 Any additional modification of setup parameters can be done only from a GE SERVICE PERSON as it requires an access code. ► Continue Modifications reserved Page 56/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 57 The Battery must be charged for at least 10 hours, in order to ensure the full backup runtime in case of a Utility Failure. Modifications reserved Page 57/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 58: Parallel System Shutdown With Load Transfer On External Maintenance Bypass (Option)

    Open the UPS Output Switch Q1 (Pos. O) on all UPS units. The Load is now supplied only through the External Maintenance Bypass. Continue ► Modifications reserved Page 58/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 59 It will take a minimum of 5 minutes for the DC capacitors to discharge Open only the front door, do not open any other part of the UPS. Modifications reserved Page 59/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 60: From External Maintenance Bypass (Option) To Normal Function Vfi

    LED Alarm turn Off and the LED Operation must be lit. The Synoptic Diagram, on all UPS units, must display the status “LOAD SUPPLIED BY INVERTER”. END OF PROCEDURE Modifications reserved Page 60/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 61: Separate A Ups Unit From The Parallel System (System Redundancy)

    Open only the front door, do not open any other part of the UPS. NOTE ! For any further intervention contact your Service Center. Modifications reserved Page 61/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 62: Reconnect A Ups Unit To A Parallel System

    The Synoptic Diagram, on all UPS units, must display the status “LOAD SUPPLIED BY INVERTER”. END OF PROCEDURE Modifications reserved Page 62/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 63: Complete Parallel System Shutdown

    It will take 5 minutes for the DC capacitors to discharge. Open only the front door, do not open any other part of the UPS. Modifications reserved Page 63/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 64: Restore To Normal Operation After "Load Off

    LED Alarm turn Off and the LED Operation must be lit. , on all UPS units, must display The Synoptic Diagram the status “LOAD SUPPLIED BY INVERTER”. END OF PROCEDURE Modifications reserved Page 64/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 65: Restore To Normal Operation After Epo (Emergency Power Off)

    The Synoptic Diagram, on all UPS units, must display the status “LOAD SUPPLIED BY AUTOMATIC BYPASS”. Synoptic Diagram of first unit Synoptic Diagram of other units Continue ► Modifications reserved Page 65/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...
  • Page 66 The Synoptic Diagram, on all UPS units, must display the status “LOAD SUPPLIED BY INVERTER”. Synoptic Diagram of first unit Synoptic Diagram of other units END OF PROCEDURE Modifications reserved Page 66/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 67: Options

    High efficiency operating mode, where the load is supplied directly by utility and automatically transferred to inverter if the voltage is out of prescribed tolerances. harmonic filter Located inside UPS cabinet. Modifications reserved Page 67/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 68: Connection For Options

    If the remote signal panel is plugged on connector J2, the terminal blocks X1 cannot be used to drive an external alarms monitoring device, because it is supplied by the internal UPS low voltage power supply. Modifications reserved Page 68/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 69: Maintenance

    A regular maintenance check of your installation guarantees higher reliability of your safe critical power supply. Preventive maintenance work on the UPS can be done only by trained Service technicians. We therefore recommend you sign a Maintenance and Service contract with GE Global Services @ 1- 800-637-1738 9.1.1 Service check If the LED Operation blinking during normal operation, the unit has not been serviced for the last 20,000 hours by a GE trained technician.

  • Page 70: Battery

    Overall performance test including a Utility Failure simulation with and without the Load. Monitoring Battery operation in discharge and recharge mode including any boost charge duties. Modifications reserved Page 70/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

  • Page 71: Notes

    It is recommended to note in this section Notes, with date and short description all the operations performed on the UPS, as: maintenance, components replacement, abnormal situations, etc. Date Description Done by Modifications reserved Page 71/71 OPM_SGS_USM_M75_M75_2US_V010.doc User Manual SG Series 750 UL S2 & SG Series 750 T12 UL S2...

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