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Current transformers Maintenance Checklist

FORM CURRENT-TRANSFORMERS-MAINTENANCE · V6
Engineer name
Date
Work scope & measurement context (optional record fields)

References only. This site supplies no acceptance values, test settings, intervals or release instructions. Selecting a scope does not authorize work. Use Remarks for row-specific context; refer to original files, which are not uploaded here.

Open V5 saved records (read-only)

Draft · technical review pending. Recording prompts only; not procedures or acceptance criteria. Work and access require your approved plan. No normal ranges, pass/fail values, test settings or maintenance intervals are supplied. Condition results are user-entered judgements under separately approved criteria. Evidence/task/measurement OK means the specified record is complete, not healthy equipment. This checklist does not authorize release to service. Unit selection does not convert values.

How to read this form

As-found observation
Describe what was observed. OK / Not OK are unavailable.
Condition
OK = User assessment under the referenced approved criteria.
Measurement record
OK = Required measurement record and context are complete.
Evidence check
OK = Required reference or evidence is verified.
Task record
OK = The specified recording task is complete.
Blank / Pending / N/A
Blank is unclassified. Pending identifies missing checks, evidence or criteria. N/A needs a reason in Remarks.

No row or completed form certifies safety, compliance or fitness for service.

Engineer/date/signature spaces remain for handwriting. Multiple records can be saved locally in this browser and exported; no cloud backup, file attachments or team approval is provided. Older template records stay separate and are not reinterpreted. Keep sensitive information off shared devices.

0 of 48 checkpoints recorded

Compare with an earlier saved inspection

Enter the same Equipment ID, Site and installed-asset identity / serial reference. Only the same template revision is compared. Context and units are shown without conversion or condition verdicts.

Records on hand & preparation

Record the documents and scope available for this inspection. Recording completion is not work authorization.

1
Record equipment identity, subtype, model and maintenance scopeTask record · OK = The specified recording task is complete
2
Review previous inspection, repair and original test recordsTask record · OK = The specified recording task is complete
3
Record operating events, known defects and outstanding follow-upTask record · OK = The specified recording task is complete
4
Reference current manufacturer maintenance instructions and approved work controlsTask record · OK = The specified recording task is complete
5
Record approved methods and instrument/calibration references for planned testsTask record · OK = The specified recording task is complete
6
Identify fitted parts, maintenance exclusions and baseline comparison conditionsTask record · OK = The specified recording task is complete
CURRENT-TRANSFORMER CIRCUITS
No.CheckpointValue / observationOKNot
OK
N/ARemarks
7CT ratio, class, polarity and terminal designations are recordedEvidence check · OK = Required reference or evidence is verified
8Secondary routing, shorting provisions and reviewed earthing arrangement are documentedEvidence check · OK = Required reference or evidence is verified
9Accessible insulation, wiring and terminal condition are recordedEvidence check · OK = Required reference or evidence is verified
10CT test reports identify ratio/polarity/excitation scope; no open-circuit work is instructedEvidence check · OK = Required reference or evidence is verified
11Approved CT-specific verification report — attach the approved report with method, conditions and source reference; only if in scopeEvidence check · OK = Required reference or evidence is verified
12Maintenance follow-up for current-transformer circuits: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified
INSULATION SYSTEM
No.CheckpointValue / observationOKNot
OK
N/ARemarks
13Accessible insulation surfaces are checked for cracking and trackingCondition · OK = User assessment under the referenced approved criteria
14Moisture, contamination and discharge marks are documentedEvidence check · OK = Required reference or evidence is verified
15Insulating barriers and separation discrepancies are recordedEvidence check · OK = Required reference or evidence is verified
16Insulation test reports identify connected equipment and test conditionsEvidence check · OK = Required reference or evidence is verified
17Approved equipment-specific insulation report — attach the approved report with method, conditions and source reference; only if in scopeMeasurement record · OK = Required measurement record and context are complete
18Maintenance follow-up for insulation system: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified
POWER CONNECTIONS
No.CheckpointValue / observationOKNot
OK
N/ARemarks
19Terminal and conductor identity match the reviewed connection drawingEvidence check · OK = Required reference or evidence is verified
20Discoloration, insulation damage and heat marks are recorded by terminalEvidence check · OK = Required reference or evidence is verified
21Conductor support, bend and strain-relief discrepancies are documentedEvidence check · OK = Required reference or evidence is verified
22Approved torque/service evidence is referenced without inferring a torque valueEvidence check · OK = Required reference or evidence is verified
23Approved connection-resistance report — attach the approved report with method, conditions and source reference; only if in scopeMeasurement record · OK = Required measurement record and context are complete
24Maintenance follow-up for power connections: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified
SUPPORTS & TRAYS
No.CheckpointValue / observationOKNot
OK
N/ARemarks
25Tray/support type, loading reference and route are recordedEvidence check · OK = Required reference or evidence is verified
26Corrosion, loose attachments and displaced supports are documentedEvidence check · OK = Required reference or evidence is verified
27Sharp edges, cable abrasion and congestion observations are recordedEvidence check · OK = Required reference or evidence is verified
28Support modifications and bonding/fire-barrier interfaces are referencedEvidence check · OK = Required reference or evidence is verified
29Cable-support inspection and installation reference — attach the approved report with method, conditions and source reference; only if in scopeEvidence check · OK = Required reference or evidence is verified
30Maintenance follow-up for supports & trays: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified
SENSORS & MONITORING
No.CheckpointValue / observationOKNot
OK
N/ARemarks
31Sensor model, location, measured quantity and calibration status are recordedEvidence check · OK = Required reference or evidence is verified
32Accessible mounting, wiring and environmental condition are documentedEvidence check · OK = Required reference or evidence is verified
33Scaling and approved controller configuration references are retainedEvidence check · OK = Required reference or evidence is verified
34Sensor verification reports identify reference, method and installed contextEvidence check · OK = Required reference or evidence is verified
35Approved sensor verification report; retain quantity and units — attach the approved report with method, conditions and source reference; only if in scopeEvidence check · OK = Required reference or evidence is verified
36Maintenance follow-up for sensors & monitoring: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified
GROUNDING & BONDING
No.CheckpointValue / observationOKNot
OK
N/ARemarks
37Protective earth and bonding conductor identification is recordedEvidence check · OK = Required reference or evidence is verified
38Accessible bonds, clamps and joints show documented conditionEvidence check · OK = Required reference or evidence is verified
39Missing conductors, corrosion and mechanical damage are recordedEvidence check · OK = Required reference or evidence is verified
40Reviewed earth drawing and continuity measurement locations are referencedEvidence check · OK = Required reference or evidence is verified
41Approved bonding-continuity report — attach the approved report with method, conditions and source reference; only if in scopeMeasurement record · OK = Required measurement record and context are complete
42Maintenance follow-up for grounding & bonding: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified
REVIEW & FOLLOW-UP
No.CheckpointValue / observationOKNot
OK
N/ARemarks
43Attach original reports, photographs and manufacturer-document referencesTask record · OK = The specified recording task is complete
44Record units, method, conditions and instrument identity for each entered resultTask record · OK = The specified recording task is complete
45Explain excluded or inapplicable parts and missing evidenceTask record · OK = The specified recording task is complete
46Record discrepancies and assign follow-up owner and due-date referenceTask record · OK = The specified recording task is complete
47Record qualified review and separately authorized dispositionTask record · OK = The specified recording task is complete
48Reference restoration or release records; this checklist does not authorize releaseTask record · OK = The specified recording task is complete
Engineer signature
Reviewer / reference

elecmaint.com · Template V6 · 48 checkpoints · No automatic condition assessment. OK does not certify safety or fitness for service. N/A requires an explanation; unknown/unverified items remain unclassified.