LOCATION OF REQUIRED CAPACITORS
METHOD #1: CAPACITOR AT LOAD
Install a single capacitor at each sizeable motor and energize it whenever the motor is in operation. We refer to this as Calmount® brand capacitor (Capacitor At Load). Tables 2 and 3 show suggested kVAR ratings to be selected.
This method usually offers the greatest advantages of all, and the capacitors could be connected either in location (A) or (B) in Figure 4 below:
Location A - Normally used for most motor applications.
Location B - Used when motors are jogged, plugged, reversed; for multi-speed motors, or reduced-voltage start motors.
The advantages of method #1 are many:
- Corrects Power Factor, unloads the transformer, reduces losses in conductors (KW-Hrs) from source to motor location.
- Voltage drop to motor is reduced - thus optimizing motor performance.
- Installation simple - no new switches or circuit breakers required.