Installation Information
19.There is no DC disconnect device within the UPS.
20.A battery disconnect switch is recommended, and may be required by NEC or local codes when batteries are remotely located. The battery disconnect switch should be installed between the battery and the UPS.
21.External DC input overcurrent protection and disconnect switch for the remote battery location is to be provided by the user. Table M lists the maximum rating for
Table M. Maximum DC Input Circuit Breaker Ratings
UPS Model | Input Voltage Rating | ||
208V/220V | 480V | ||
| |||
Powerware | 400A | 400A | |
Powerware | |||
|
| ||
Powerware | 450A | 450A | |
Powerware | |||
|
| ||
Powerware | 600A | 600A | |
22.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.
23.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.
24.If the conductors used for DC input from the battery cabinets to the UPS are those provided by the UPS manufacturer, and the UPS and battery cabinets are manufactured by the same supplier, then it is acceptable if they do not meet the noted minimum conductor sizes.
DESCRIPTION: POWER WIRING INSTALLATION NOTES
| DRAWING NO: |
| SHEET: 9 of 15 |
| REVISION: A | DATE: 091505 | |
