Liebert 1000kVA manual Operation

Operation

The Battery block in the Monitor/Mimic Display indicates the battery voltage and charge current.

NOTE

The battery charge current may increase quickly, but then should slowly decrease. If you are recovering from a battery shutdown or an input power failure, the UPS rectifier will be recharging the battery. Recharge current can be more than 100 Amps. The maximum allowable recharge current for your unit will depend on the kVA rating and your factory-set battery recharge current limit.

! CAUTION

Do not use equalize charging with valve-regulated, sealed-cell batteries. Refer to the battery manufacturer’s manual, available on the manufacturer’s Web site, for specific information about equalize charging.

Use the Monitor/Mimic Display screen to determine the condition of the UPS module. Press the Alarm Reset pad to clear the Alarm Messages. Refer to Table 9 for an explanation of any remaining alarm messages. Call Liebert Global Services if you cannot clear the remaining alarm messages.

If no alarm messages are displayed, the UPS module is now ready to provide filtered, uninterruptible power to the critical bus. Manually close the module output circuit breaker (CB2, Figure 8) to place this UPS module on-line.

When all required UPS modules are on-line, return to the SCC (see 3.4.3 - Load Transfer Proce- dures) to complete your UPS system start-up.

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