Stage of Testing	Electrical Routine Test	Medium Voltage and High Voltage Motors and Generators	High voltage Hydro generators and Turbo generators
Coils Rated Line Voltage in kV	Bars Rated Line Voltage in kV
3.3	6.6	11	13.8	11	13.8	15.75
1. Test on Individual coils (New coils and Bars)	Tapping test	No debonding on the slot portion
Surge test at (1.7 * Un) KV	5.6	11.2	18.7	23.46	Conductors interlamination test at 110 V AC
AC HV Test at 1.3 * (2Un+1) KV	10	19	30	37.8	30	37.8	42.25
Tan delta test	The tan delta measurement carried out from 0.2* Un to 1.2* Un insteps of 0.2* Un
2. Test after Coils Insertion in wound Stator – Before connection
2. Test after Coils Insertion in wound Stator – Before connection	IR & PI	1 KV	2.5KV	5KV	5KV	5KV	5KV	5KV
Surge test at (1.6 * Un) KV	5.28	10.56	17.6	22	NA
AC HV test at 1.2* (2Un+1) KV	9.12	17.04	27.6	34.32	27.6	34.32	39
RTD’s HV test	AC HV test at 1.5 KV for 5 seconds, Should not failure
RTD’s Resistance	Measure the Resistance Value of all individual RTD’s and Variation should be within +/-15%
3. Test after Complete stator winding connection	Winding resistance	Measure the Winding Resistance Per Phases
IR & PI	1 KV	2.5KV	5KV	5KV	5KV	5KV	5KV
AC HV test at 1.1*(2Un+1) KV	8.36	15.62	25.3	31.46	25.3	31.46	35.75
Surge test in KV	2KV	2KV	2KV	2KV	5KV	5KV	5KV
Tan delta test	The tan delta measurement carried out from 0.2* Un to 1.2* Un insteps of 0.2* Un
RTD’s Resistance	Measure the Resistance Value of all individual RTD’s and Variation should be within +/-15%
4.Test After Assembly of rotors Test After Assembly of rotors and Stators	Winding resistance	Measure the Winding Resistance Per Phases
IR & PI	1 KV	2.5KV	5KV	5KV	5KV	5KV	5KV
AC HV test at (2Un+1) KV	7.6	14.2	23	28.6	23	28.6	32.5
Tan delta test	The tan delta measurement carried out from 0.2* Un to 1.2* Un insteps of 0.2* Un
RTD’s Resistance	Measure the Resistance Value of all individual RTD’s and Variation should be within +/-15%