4 over-current protection, Over-current protection – MaxPower Corp Gamatronic Power+ M50-RM User Manual
Page 57
Gamatronic Electronic Industries Ltd.
POWER+ RM
50
K
VA, N.Am. Std. – User Guide, Release 1.9
41
5.4
Over-Current Protection
CAUTION!
To reduce the risk of fire, connect the UPS only to a circuit provided with
maximum branch circuit over-current protection as indicated in Table 8, in
accordance with the National Electric Code, NSI/NFPA 70.
ATTENTION !
Pour réduire le risque du feu, reliez l'onduleur seulement à un circuit équipé de
protection maximum de surintensité de circuit de branche comme indiqué au
Table 8, selon le code électrique national, au NSI/NFPA 70.
Ensure that the lines into and out of the UPS have protective circuit breakers installed in
accordance with the ratings listed in Table 8 for your Power+ model.
Table 8: Required external over-current protection and external wire size
UPS
OUTPUT
CAPACITY
L
INE
F
IELD WIRE SIZE
AS PER
UL
*
R
EQUIRED
EXTERNAL
CIRCUIT BREAKER
RATING
*
10 kVA
Rectifier ac input
Bypass ac input
Ac output
35 A
20 kVA
Rectifier ac input
Bypass ac input
Ac output
70 A
30 kVA
Rectifier ac input
Bypass ac input
Ac output
110 A
40 kVA
Rectifier ac input
Bypass ac input
Ac output
150 A
50 kVA
Rectifier ac input
Bypass ac input
Ac output
3/0 AWG (for 175 A)
175 A
* The recommended wire size is based on a 50 kVA system. The required circuit breaker size is
based on the actual maximum power of the system in kVA.