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114
* To be completed by Liebert Global Services customer engineer at time of start-up.
12.2.5 Torque Requirements
All electrical connections must be tight.
Tables 52 through 54 provide the torque values for the connections in the UPS and batteries. Use
these values unless the equipment is labeled otherwise.
!
WARNING
Risk of electric shock, explosive reaction, hazardous chemicals and fire. Can cause equipment
damage, personal injury and death.
Do not use equalize charging with valve-regulated, lead-acid batteries, such as those used in
Liebert battery cabinets. Refer to the battery manufacturer’s manual, available on the
manufacturer’s Web site, for specific information about equalize charging.
Table 51 Battery voltage record
Date
Float Voltage
(Volts DC)
Nominal Voltage
(Volts DC) Ambient Temp. (°F)
Table 52 Circuit breakers with compression lugs (for power wiring)
Current Rating Lb-in N-m
400 - 1200 Amps 300 34
Table 53 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
Table 54 Battery retorque values
Battery Mfr. Battery Model # Retorque Value
Enersys
12HX100-FR 40 in-lb (4.5N-m)
12HX150FR 40 in-lb (4.5N-m
12HX205-FR 58 in-lb (6.5N-m)
12HX300-FR 58 in-lb (6.5N-m)
12HX330-FR 58 in-lb (6.5N-m)
12HX400-FR 58 in-lb (6.5N-m)
12HX505-FR 58 in-lb (6.5N-m)
12HX540-FR 58 in-lb (6.5N-m)