EASA VERITAS TN Electrical Installation Association

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 & 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 & 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 >5 KV