Free checklist
Power factor correction capacitor bank quarterly maintenance checklist
A quarterly capacitor bank round is short on purpose: it catches the wear items that fail between annual services. This checklist is sized for a tech with a phone. Every item says what to look at and the photo that proves the round happened. Work is commonly verified against NFPA 70B, NEC (NFPA 70). Confirm the edition your authority having jurisdiction has adopted.
- Items
- 5
- Photos required
- 7
- Built for
- Subcontractors
Who runs it
The facility electrician on the quarterly round, reading the bank energized through the door or viewing window.
When in the schedule
Every quarter, timed against a loaded part of the day so the controller is actually calling stages in and the power factor reading means something.
The checklist
Every item, and the photo that proves it
The photo count on each row is what RTI would require before the item can be submitted. Copy the list as is, or load it into RTI and let the gate enforce it.
Cans and fuses
- 2 photos
Capacitor cans checked for bulging and leaking
No swollen, domed or split cases, no oil or dielectric weeping at the bushings or seams, no scorching on a can face.
- 1 photo
Fuse indicators read across the stages
Each capacitor fuse or blown-fuse indicator checked, none popped or discolored, no stage limping along on a lost phase.
Switching and controller
- 1 photo
Contactor or stage switching observed
Stages pulling in and dropping out cleanly as the controller calls them, no contactor chattering or a stage stuck in or out.
- 2 photos
Controller and power factor reading checked
Controller displaying a corrected power factor near target, no alarm or fault code, reading cross-checked against actual stage current.
Cooling and heat
- 1 photo
Ventilation clear and cans not overheating
Cooling vents and any fans on the enclosure clear and running, cans not hot to a scan, room airflow reaching the bank.
What usually sends this back
The failures are almost always the evidence, not the work
- A bulging or seeping can noticed but written off as 'always looked like that', so a failing capacitor is left switching in and out.
- The controller reading a healthy power factor while a whole stage's contactor has stopped pulling in, and no one cross-checks the amps.
- A blown capacitor fuse whose indicator has popped, missed because the door stays shut and the indicators are never read.
Run it with the Photo Gate
A checklist nobody can submit half-finished
Load this list into RTI, stick a QR tag on the area it covers, and the submit button stays locked until every mandatory item is answered and the 7 required photos exist. Approved walks roll into a branded turnover package with a tamper-evident record behind every line.
Submission state
The gate is enforced on the server, so it holds even if the phone is offline when the walk happens.
Verified against
Common questions
- What does this power factor correction capacitor bank quarterly checklist cover?
- 5 items across 3 sections, covering cans and fuses, switching and controller, cooling and heat. Each item spells out what the person walking the job is actually looking for, not just a box to tick.
- Who should run this inspection?
- The facility electrician on the quarterly round, reading the bank energized through the door or viewing window.
- When in the schedule should this walk happen?
- Every quarter, timed against a loaded part of the day so the controller is actually calling stages in and the power factor reading means something.
- Why does every item ask for a photo?
- 7 of the 5 items call for photo evidence. A checklist answer without the photo is a claim; the photo is what makes the record worth something in a dispute and lets a reviewer approve work without re-walking the job.
- What most often fails a power factor correction capacitor bank quarterly inspection?
- A bulging or seeping can noticed but written off as 'always looked like that', so a failing capacitor is left switching in and out. The controller reading a healthy power factor while a whole stage's contactor has stopped pulling in, and no one cross-checks the amps. A blown capacitor fuse whose indicator has popped, missed because the door stays shut and the indicators are never read.
- Can I use this checklist in RTI?
- Yes. Start a free RTI workspace, build this list as a checklist, and the Photo Gate holds the submit button until every mandatory item is answered and its photos are attached. Approved inspections roll into a branded turnover package with a tamper-evident audit trail.
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