Posted 27 December 2007 - 11:49 PM
What does " up sized " mean ? Does it mean larger current rating? the schematic shows the capacitor on the load side of the contactor , just as the motor is on the load side of the same contactor ; so, if anything, the current seen by the contactor will be less with the capacitor than without ???
Posted 29 December 2007 - 12:22 AM
Welcome to the forum.
When the contactor closes, it will have to carry the inrush to the motor plus the inrush current to the capacitors. The contactor will see a reduced steady state current when the motor is running, but the closing transient could be sufficient to damage the contacts, hence the rating should be increased.
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