GE VMIVME-4116-070L Sequence control card
Ripple current rating The bus capacitor’s 120 Hz ripple current rating should equal or exceed the 6410’s current setting. The capacitor’s working voltage rating must exceed the maximum bus voltage under all line, load, and regen conditions. Select a capacitor rated for at least 1.3 times the nominal bus voltage.
Suppose a 6410 is operating at 70 volts
and is set for 5 A rms motor current. Assuming a 60 Hz line, a bus capacitor of 6000 micro farads should be used. The capacitor should have a 120 Hz ripple current rating of at least 5 amps rms and a working voltage of at least 1.3 * 70 = 91 volts. The bus capacitor should be connected to the 6410 using a twisted pair, no longer than 3 feet in length.
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