Amada S-2200CA, Operation Manual

Page: 52 / 210

CHAPTER 2: INSTALLATION AND SETUP
IS-2200CA/4500CA INVERTER POWER SUPPLY
2-14 990-412
Breaker
Breaker Rated Current
Calculate the average Input current using output current (momentary maximum current) and duty
cycle:
Effective continuous current = I x 0.817 x
Select the breaker rated current of at least the average input current above. Check the coordination of
output current (momentary maximum current) and tripping time on the tripping characteristic curve
of the breaker to select the appropriate breaker.
Output current = 4500A / Duty cycle = 10%
4500 x 0.817 x = 1163 amps
Breaker of at least 1163A (e.g., 1200 amps) must be selected.
α
100
I : Output current (momentary maximum current) of IS-2200CA/4500CA
α : Duty cycle (%)
10
100