APC 20 - 200 KVA Battery maintenance, Visual check, Functional check, Vented lead-acid batteries

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Maintenance (cont.)

Battery maintenance

Consult the instructions supplied by the battery manufacturer. Below are a few general indications:

◗sealed lead-acid batteries: these batteries require no maintenance, but check the terminals of each cell from time to time and clean if necessary;

◗vented lead-acid batteries:

◗check the electrolyte level regularly and add water if necessary,

◗check the voltage of each cell to determine if it is necessary to equalise the battery,

◗check the terminals of each cell and clean if necessary.

Caution:

Battery maintenance is undertaken with the system powered up. Operations must be carried out in accordance with applicable safety regulations by qualified personnel using insulated tools, gloves and safety goggles. Batteries contain dangerous substances that will harm the environment if thrown away. If you change the batteries yourself, call on qualified organisations for battery recovery and recycling.

PbPb

Visual check

◗Power down the system prior to any maintenance operations.

Note: in redundant, parallel UPS systems and frequency converters, the check may be carried out successively on each UPS unit without interrupting the load. In other configurations, the load must be supplied via the maintenance bypass (see "maintenance bypass" in the "Alarm" section);

◗clean the system regularly, particularly the air inlet and outlet grills. Check that the air circulates freely in the cubicles. Use a vacuum cleaner if necessary;

◗check that nothing hinders the ventilation at the top and at the back of the system;

◗check that all the fans operate correctly.

Functional check

◗Check that lights 1 , 2 and 3 on the control panel are not red, to avoid an interruption in the supply of power to the load due to incorrect transfer conditions or a battery problem;

◗press the "inverter OFF" button and check that the buzzer and control panel lights function correctly (see the section on operating modes in the introduction);

◗press the "inverter ON" button and check again that the control panel lights function correctly;

◗run a transfer to battery test. With the inverter on, open input switch Q1. The orange "battery" light on the control panel should light. After two minutes on battery power, close input switch Q1. The rectifier/charger should automatically restart and the orange "battery" light on the control panel should go off;

◗in parallel systems, run these tests on each UPS unit.

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Contents MGE Galaxy PW 51028230XT/BG Contents Page Introduction General characteristics of MGE Galaxy PW UPSsSystem description Schematic diagram of the MGE Galaxy PW systemSystem may also include Different types of MGE Galaxy PW systems Frequency converter with battery backup powerIsolation and protection devices External bypass for parallel UPSs and the hot-swap optionOperation in on-line Battery timeMode Operation with the normalBattery charge cycle Operation with the normal AC source restoredOperation with bypass AC source restored Operation in ECO modeOperation with the bypass AC source outside tolerances Forced transfer and return transferInverter shutdown or overload Single-UPS unit on-line or ECO modeParallel UPSs with redundancy Parallel UPSs without redundancyOutput voltage quality and continuity Example of an installation with an engine generator setSteady state voltage regulation Transient voltage regulationUPS cubicle Description of MGE Galaxy PW cubicles80 100 120 kVA 20 30 40 50 60 kVA 160 200 kVAControl panel Battery cubicleGeneral Presentation Alarm reset key Battery keyBuzzer reset key Anomaly indicator lightSystem start-up Start-upParallel UPS unit for increased output Single-converter unit or redundant parallel converter unitStart-up of a rectifier/ charger Start-up of a moduleStart-up of an inverter Shutdown UPS in ECO modeShutdown of the inverter Shutdown of a rectifier/ chargerControl-panel display Display of alarmsGeneral organisation List of primary messages Load Protected ON-LINE ModeLoad on Mains List of secondary messagesBattery Charging BAT. = XXX a U BAT. = XXX Voltage measurements Measurement systemCurrent measurements Selections and settings Battery measurementsSet date and time Inverse video Battery testPast events Test Interrupted Check Presence of the Battery Check Alarms Maintenance bypass AlarmsSignal transmission Signal receptionEnvironment information Setting the date and time for the UPS General instructions for using most screensLogging and time-stamping Utilisation via the MGE Galaxy PW displayExample Consulting statisticsNb of backups 1 min this is Elapsed backup time min this isMin nb of backups 3 min this Total time with Tbatt 25 C hUtilisation via Teleservice Maintenance configuration MaintenanceSingle-UPS unit or UPS in ECO mode UPS isolationStart-up Redundant, parallel UPSIsolate all UPSs Parallel UPS for increased outputVisual check Battery maintenanceFunctional check Vented lead-acid batteriesTraining center Safety of life and property Harmonics filter and power factor improvementOptions Electrical supervision Empty cubicles
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