CLIP 1305301 - Caterpillar

UPS Current Ratings
Table 1 current ratings are based on 400 V phase-to-phase voltages and a load with a 0.9 power factor. For 380 V phase-to-phase voltages or 415 V phase-to-phase voltages, the current values must be multiplied by 1.05 and 0.96 respectively. The battery current is the average current for a 488 V battery voltage. The battery ratings are for 44 blocks at 1.85 V/cell, at nominal power (Pn) with a 0.9 power factor.
Table 1
UPS Ratings in kVA     Current rating for Normal input in amps     Current rating for Bypass input in amps     Current rating of load in amps     Current rating for battery in amps    
160     225     231     231     313    
200     281     289     289     392    
250     351     361     361     490    
300     420     433     433     588    
400     558     577     577     784    
500     700     722     722     980    Recommended Upstream Protection
Normal AC Source
A label that contains the following message, must be applied to each upstream circuit breaker or disconnect switch. "Isolate the Uninterruptible Power Supply (UPS) before working on this circuit." Refer to the, "General Hazard Information" section of this publication for safety of persons and equipment.
The protection ratings are calculated for the maximum continuous current at 380 V.The recommended circuit breakers and disconnect switches consider the requirements for use with UPS fuses.Note: Depending on the installation, the circuit breaker or disconnect switch may be replaced by a circuit breaker or disconnect switch with a higher breaking capacity.
Table 2
UPS rating in kVA     Circuit breaker/disconnect switch (CB/DS)     Trip unit    
160-200     NSX 400 3P (1)     STR 23 SE    
250-300     NSX 630N 3P (1)     STR 23 SE    
400     NSX 800N 3P (1)     Micrologic 2.0    
500     NSX 800N 3P (1)