Powerware 10001100 kVA 用户手册

UPS INSTALLATION PLAN AND UNPACKING

EATON Powerware

®

 9395 UPS (1000–1100 kVA) Installation and Operation Manual  

S

  164201764 Rev 1 www.powerware.com

3−18

There is no manual DC disconnect device within the UPS.

A battery disconnect switch is required for battery systems and may also be required
by NEC or local codes. The battery disconnect switch should be installed between the
battery and the UPS.

External DC input overcurrent protection and disconnect switch is to be provided by
the customer. Table 3-16 and Table 3-17 list the maximum ratings for continuous-duty
rated circuit breakers satisfying the criteria for both. Recommended disconnect size is
based on a maximum full load discharge time less than 3 hours. For longer discharge
times a larger disconnect may be required.

Table 3-16. Recommended DC Input Battery Disconnect Ratings – Common Battery

UPS Model

Input Rating

480V

Powerware 9395−1100/1000

2500A

Powerware 9395−1100/1100

3000A

Powerware 9395−1100/650
Powerware 9395−1100/750
Powerware 9395−1100/825

2000A

Table 3-17. Recommended DC Input Battery Disconnect Ratings – Separate Battery

UPS Model

Input Rating

(each UPM)

480V

Powerware 9395−1100/1000

700A

Powerware 9395−1100/1100

Powerware 9395−1100/650
Powerware 9395−1100/750
Powerware 9395−1100/825

Battery voltage is computed at 2 volts per cell as defined by Article 480 of the NEC.
Rated battery current is computed at 2 volts per cell.

The battery wiring used between the battery and the UPS should not allow a voltage
drop of more than 1% of nominal DC voltage at rated battery current.