OPEN TEST

Put the control on "Manual"

With the control, "Open" ("Trip") the bank

"Open" the load-break cutouts

Wait at least 5 Minutes for the Capacitors to safely discharge

Check that the oil / vacuum switches open correctly

IF a switch does not open, check the secondary connections to insure control voltage is getting to the switch.
Some of our new capacitor controls only send a pulsed control voltage signal (not a constant voltage)

IF Secondary Control Voltage is absent, repairing secondary wires or the control may resolve the issue.

Switch Successfully Opened

A phase

B phase

C phase

Notes

Replace any questionable switches

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CLOSE TEST

Visually inspect the capacitor bank for any signs of problems (e.g. bulging, leaking, broken bushings, ...)

IF there are any signs of damage, DO NOT "Close" the bank until the damages are repaired

Please note any damage or repairs made.

Close all the cutouts

"Close" the bank using the control"

Verify all the oil / vacuum switches closed correctly

Check that the oil / vacuum switches open correctly
Switches Successfully Closed

A phase

B phase

C phase

Notes

IF a switch does not close, check the secondary connections to insure control voltage is getting to the switch.
Some of our new capacitor controls only send a pulsed control voltage signal (not a constant voltage)

IF Secondary Control Voltage is absent, repairing secondary wires or the control may resolve the issue.

Amp probe the leads from each cutout / oil or vacuum switch
Current Readings [Amps]

A phase

B phase

C phase

The amp readings above the cutout, below the CL fuse, and in / out of the switch should all be the same.

IF all three currents are within the normal range (see Table "A"), then the fuses, oil/vacuum switches, and capacitors are "OK"

IF ANY phase reads "Zero" amps, then a fuse, switch, or capacitor could be bad.

Check the fuse by fuzzing or taking a primary voltage reading on the LOAD side of the fuse

Check the "primary section" of the switch by fuzzing or taking the primary voltage reading on the LOAD side of the switch

Amp probe the neutral bus conductor past the last capacitor in the lead connecting to the system neutral

Neutral Reading [Amps]

IF this value is in the normal range (see Table "B"), then connections, equipment, and harmonics are probably not a problem

Are the readings within normal ranges?

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Final Steps

Test Summary

Positions AFTER Testing

CUTOUTS

SWITCHES

CONTROL

Counter Reading on control (if available)

Prepared by

Signature
Date | Time
Please note that this checklist is a hypothetical example and provides basic information only. It is not intended to take the place of, among other things, workplace, health and safety advice; medical advice, diagnosis, or treatment; or other applicable laws. You should also seek your own professional advice to determine if the use of such checklist is permissible in your workplace or jurisdiction.