MGE UPS Systems 225KVA output, in kVA, output, in kVA, Ratings, Ratings, AC input, AC input, rated UPS, rated UPS, breaker(s), CB on normal, CB on bypass, control unit

Galaxy PW™ UPS 100 to 225kVA

1.7Recommended Protection1.7.1Protection Upstream of Galaxy PW™

The information provided here is purely indicative, for a single UPS unit. Check that all the criteria mentioned in the previous section are taken into account (short-circuit current and protection of the static switch semiconductors on the bypass AC input).

Table 1-3: Rating Recommended for Devices Upstream of Single UPS.

Ratings

rated UPS	CB on normal		CB on bypass
output	AC input		AC input
in kVA	circuit breaker	control unit	circuit breaker	control unit
100	125A	125A	125A	125A
130	160A	160A	160A	160A
150	250A	200A	250A	200A
180	250A	250A	250A	250A
200	400A	400A	400A	400A
225	400A	400A	400A	400A

1.7.2Protection Downstream of Galaxy PW™

These protection devices ensure discrimination for each of the Galaxy PW™ output circuits. If the recommended downstream protection is not installed and a short-circuit occurs, the result may be a break longer than 20-min on all the other output circuits.

Table 1-4: Rating Recommended for Devices Downstream of Single UPS.

Ratings

rated UPS	downstream circuit
output	breaker(s)
in kVA	circuit breaker	control unit
100 to 225kVA	100A	63A curve C
		100A curve B

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