APC GALAXY 7000 - Manual (Page 19)

Prerequisites >
34020846EN/AD - Page 19
1. Installation
1.3 Prerequisites
UPS currents
Recommended upstream protection
Normal AC source
Bypass AC source
UPS cabinets in kVA I rated of Normal
AC in A
I rated of Bypass
AC in A
I rated of load
in A
I battery in A
250 351 361 361 490
300 420 433 433 588
400 558 577 577 784
500 700 722 722 980
The table above is for 400 V interphase voltages and a load with a power factor of 0.9.
For other voltages (380 or 415 V), the current values must be multiplied by 1.05 and 0.96 respectively.
The battery current is an average current for a battery voltage of 488 V (44 blocks at 1.85 V/cell each), at Pn with a power
factor of 0.9.
Stick a label with the following text on each upstream circuit breaker / switch-disconnector: "Isolate Uninterruptible
Power Supply (UPS) before working on this circuit".
Selection of protective devices is determined by the maximum continuous current (at 380 V).
Protection ratings are calculated for the maximum continuous current (at 380V).
UPS cabinets in kVA CB / switch-disconnector Trip unit
250 NS 630N 3P * STR 23 SE
300 NS 630N 3P * STR 23 SE
400 NS 800N 3P * Micrologic 2.0
500 NS 800N 3P * Micrologic 5.0
The circuit breakers / switch-disconnectors recommended above respect the requirements for discrimination with the UPS
fuses.
Depending on the installation, the CB/SD may be replaced by a CB/SD with a higher breaking capacity.
* For short-circuit currents > 40 kA, use a CB/SD with a higher breaking capacity (type L or H).
Stick a label with the following text on each upstream circuit breaker / switch-disconnector: "Isolate Uninterruptible
Power Supply (UPS) before working on this circuit".
Selection of protective devices is determined by the maximum continuous current (at 380 V).
Protection ratings are calculated for the maximum continuous current (at 380V).
UPS cabinets in kVA Maximum permissible
current for 20 ms
CB / switch-
disconnector
Trip unit
250 25 In NS 630N 4P * STR 23 SE
300 21 In NS 630N 4P * STR 23 SE
400 16 In NS 800N 4P * Micrologic 2.0
500 16 In NS 800N 4P * Micrologic 5.0
The circuit breakers / switch-disconnectors recommended above respect the requirements for discrimination with the UPS
fuses.
Depending on the installation, the CB/SD may be replaced by a CB/SD with a higher breaking capacity.
* For short-circuit currents > 40 kA, use a CB/SD with a higher breaking capacity (type L or H).