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Quality Assurance Plan
Quality Assurance Plan for HV Stator Coils / Bars
| Routine Test (standards adopted) | Rated Voltage U | |||
|---|---|---|---|---|
| 3.3 KV | 6.6 KV | 11 KV | 13.2 KV | |
| AC HV Test on manufacture of coils / bars in shop at 1.3 (2 U +1) (IEC 60034 / BS 4999 and 5000) | 10 | 18 | 30 | 36 |
| AC HV Test after placing the coils / bars in slots at (2 U + 3) (In-house Standard) |
10 | 16 | 25 | 29 |
| AC HV Test after wedging the slots at (2 U + 2) (In-house Standard) |
9 | 15 | 24 | 28 |
| AC HV Test on 3 phases of completed stator winding at (2 U + 1) (IEC 60034 / BS 4999-5000) |
8 | 15 | 23 | 27 |
| Surge Comparison Test on all coils on manufacture in shop at 1.5 U (In-house Standard) |
5 | 10 | 16 | 20 |
| Surge Comparison Test on all coils after placing in slots at 1.5 U (In-house Standard) |
5 | 10 | 16 | 20 |
| Surge Comparison Test on completed stator winding at 2 U + 1 (IEC 60034 / BS 4999-5000 / ESI 44 - 7) | 8 | 15 | 23 | 27 |
| Tan Delta Test on random / all coils and completed stator winding (IEC 60894 / BS 4999-5000 / ESI 44 - 7) | At 0.2 U, 0.4 U, 0.6 U, 0.8 U and 1.0 U | |||
| Measurement of insulated size in the moulded portion (IEC 60034 / BS 4999-5000 / ESI 44 - 7) |
100% of the coils / bars | |||
| Type Test | Rated Voltage U | |||
|---|---|---|---|---|
| 3.3 KV | 6.6 KV | 11 KV | 13.2 KV | |
| After AC HV 2U + 1 for 1 minute on two coils / bars, raise to 2(2U+1) (IEC 60034 / BS 4999-5000 / ESI 44 - 7) |
16 | 30 | 46 | 56 |
| Surge Comparison Test (in KV) on two coils at 2U +1 (IEC 60034 / BS 4999-5000 / ESI 44 - 7) |
8 | 15 | 23 | 28 |
| AC HV Test (in KV) in the overhangs on 2 coils / bars at 2 U (IEC 60034 / BS 4999-5000 / ESI 44 - 7) |
7 | 13 | 22 | 26 |
| Tan delta Test on 2 stator coils / bars at room temperature before and after heating the coils / bars to 100 deg C (IEC 60894 / BS 4999-5000 / ESI 44 - 7) |
At 0.2 U, 0.4 U, 0.6 U, 0.8 U and 1.0 U | |||
| Measurement of DC Resistance at room temperature (IEC 60034 / BS 4999-5000 / ESI 44 - 7) |
5% of the coils / bars | |||
| AC BDV Test of insulation of conductors in each spool used for the coils (In-house Standard) |
Shall be and 5 KV | |||