Ungrounded Wye Unbalance Detection Discussion (Page 1 of 3)
Continuing in my series of unbalance detection discussions and schemes we will now look at floating WYE (ungrounded) capacitor connections.
Let us start with a balanced 3 phase, three wire capacitor scheme to see what numbers we come up with.
See Figure 1. The parameters, as shown in figure 1 are as follows
Capacitor Bank 600 KVAR, 12,470 volts, with 2 – 100 KVAR 7200 volt units per phase.
XC for the 100 KVAR, 7200 volt capacitor is
XC of 200 KVAR, @ 7200volts (for each phase) is
Capacitance is as Follows
This Will Be
C = for the 100 KVAR and
C = for 200 KVAR.
Unit current =
Phase current =
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