Installation manual

Section 100: Before Installing the UPS

101 Pre-Installation Check

Find the following information. Use the labels on the equipment.

UPS:

• kW rating (see UPS model #): __________ kW

• AC volts in (range): ❑200 - 240 VAC (standard)

❑380 - 415 VAC (optional)

• AC volts out (range): 100 - 127 VAC, 200 - 240 VAC (all models)

• Frequency: 50/60 Hz. On line, input frequency is the same as output

frequency.

Load equipment:

• Combined kW rating: __________ kW

• AC voltage(s): __________ VAC and __________ VAC

• Frequency: __________ Hz

Utility service available on site (AC input to UPS):

• Voltage provided to UPS: __________ VAC

• Frequency: __________ Hz

External bypass switch (optional):

• Best Power model number: _____________

• Break-Before-Make (BBM) or ❑BBM

Make-Before-Break (MBB)? ❑MBB

❑1.Verify that the total kW rating of the load equipment does not exceed the kW rating of the UPS.

❑2.Verify that the service panel will supply the proper voltage to the UPS.

NOTE: 480 VAC service may be used if the proper step-down transformer is placed between

the service panel and the UPS. See Table 1, note 4.

❑3.Find your frequency, UPS input voltage, and UPS output voltage combination in Table 1. Call

Best Power if you do not find your application in the table.

❑4.Use Table 1 and Table 2 to verify that you have the correct model and type of bypass switch.

❑5.Verify that the frequency supplied at the service panel (UPS input) matches the frequency

required by the loads.