| S.No. | Field / Checkpoint | Reference | Status |
|---|---|---|---|
| A. CIRCUIT IDENTIFICATION | |||
| A1 | Circuit no. + location + cable size + length Acceptance: Per drawing | Per cable schedule | OK NC NA |
| A2 | Test date + tester (megger model + voltage) Acceptance: Per voltage class | Megger 500V / 1000V / 2500V | OK NC NA |
| B. TEST PROCEDURE + RESULTS | |||
| B1 | Insulation resistance phase-to-phase (R-Y, Y-B, R-B) Acceptance: Per code | ≥ 1 MΩ per IS 732 | OK NC NA |
| B2 | Insulation resistance phase-to-earth (each phase) Acceptance: Per code | ≥ 1 MΩ | OK NC NA |
| B3 | Reading at 1 minute + 10 minute (Polarisation Index PI = 10min/1min) Acceptance: Computed | PI ≥ 2 indicates good | OK NC NA |
| C. ACCEPTANCE | |||
| C1 | Pass / Fail per circuit Acceptance: Logged | Below 1 MΩ → reject + investigate | OK NC NA |
| C2 | Annual re-test for fixed wiring (LV) / 5-yearly for industrial Acceptance: Year tested | Per maintenance schedule | OK NC NA |