Amada S-2200CA, Operation Manual

Page: 53 / 210

CHAPTER 2: INSTALLATION AND SETUP
IS-2200CA/4500CA INVERTER POWER SUPPLY
990-412 2-15
Input / Output Cable
An input/output cable is determined by the average input current and the average output current.
Calculate the average input current and the average output current using output current (momentary
maximum current) and duty cycle.
Effective continuous current = I x 0.817 x
Effective continuous current = I x
Check the manufacturer’s characteristic table to select the cross section of the cable according to the
allowable current. Although a four-core cable is used for the input cable and a three-core cable is
used for the output cable, one of the cores is for grounding. Therefore, use the allowable current of
three cores for input cable and that of two cores for output cable.
Output current (momentary maximum current) = 1000 amps / Duty cycle = 15%
Average input current is as follows.
1000 × 0.817 × = 316 amps
Average output current is as follows.
1000 × = 387 amps
Use a cable of a nominal cross section with 316 amps or more of allowable current
of three cores for input cable and 387 amps or more of allowable current of two
cores for output cable.
α
100
α
100
I: Output current (momentary maximum current) of IS-2200CA/4500CA
α: Duty cycle (%)
15
100
15
100