Maintenance

The equalizing charge time period is adjustable from zero to 72 hours and can be initiated automati- cally or manually. Refer to Battery Equalizer on page 59.

Table 9 Battery voltage record

Date

Float Voltage

(Volts DC)

Nominal Voltage

(Volts DC)

Ambient Temp. (°F)

*To be completed by Liebert Global Services customer engineer at time of start-up.

4.2.5Torque Requirements

All electrical connections must be tight.

The next Table provides the torque values for the connections in the UPS. Use these values unless the equipment is labeled otherwise.

NOTE

Refer to battery manufacturer's manual for the proper torque values required for the battery. (See battery manufacturer’s Website.)

Table 10 Circuit breakers with compression lugs (for power wiring)

Current Rating

Lb-in

N-m

 

 

 

400 - 1200 Amps

300

34

 

 

 

Table 11 Terminal block with compression lugs (for control wiring)

AWG Wire Size

 

 

or Range

Lb-in

N-m

 

 

 

#22 -- #14

3.5 to 5.3

0.4 to 0.6

 

 

 

99

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Liebert 30-130kVA manual Torque Requirements, Battery voltage record