Test Specifications

 
 Performance Particulars of Shrink Fit Heat Shrinkable Joints & Termination for  XLPE Insulated Cables upto 36 KV
 
Test Sequence
 		 Parameter for
Evaluation		 Test Voltage Highest Voltage
Umax (Kv)		  Result
    7.2 12 24 36  

Conductor Resistance

 1 S : 10810
(Parts)		 - - - - Resistance shall be computed and corrected at 200C and recorded
Impact Test Clause 6.1 of
IS : 13573		 - - - - There shall be no visible damage
A.C. Voltage withstand (Dry) 1 Min 27 35 55 75 No breakdown and no flashover
A.C. Voltage withstand (Wet) 1 Min 20 28 50 70 No breakdown and no flashover
Partial Discharge --- 2 Uo 2 Uo 2 Uo 2 Uo ≤ 20pC
Impulse Voltage
withstand		 10 positive and 10 negative, 1.2 / 50 uS, between each conductor and the grounded screen 60 75 125 170 No breakdown and no flashover
Load Cycling 3 cycles 5h heating, 3h cooling Conductor temperature: 5+ operating temperature 9.5 16 32 50 No breakdown and no flashover
Partial Discharge --- 2 Uo 2 Uo 2 Uo 2 Uo ≤ 20pC
Load Cycling 60 cycles 5h heating, 3h cooling Conductor temperature: 5+ operating temperature 9.5 16 32 50 No breakdown and no flashover
Thermal Short Circuit 1 sec symmetrical fault with conductor temperature as for cable specification
1 sec earth fault with screen or armour temperature as for cable specification		 - - - - No visible signs of damage
Load cycling 63 cycles 5h heating, 3h cooling Conductor temperature: 5+ operating temperature 9.5 16 32 50 No breakdown and no flashover
Conductor Resistance --- - - - - 10% more than initial reading
Impulse voltage withstand 10 positive and 10 negative, 1.2/ 50mS, between each conductor and the grounded screen 60 75 125 170 No breakdown and no flashover
D.C Voltage withstand 30 min 28 48 96 144 No breakdown and no flashover
Humidity indoor terminations Conductivity 70±10 m S/m, 300 hour spray rate: litrel/m 3/h 4.5 7.5 15 22.5 No breakdown and no flashover, no visible tracking and so erosion
Dynamic short circuit 63kA - - - - No visible signs of damage
Salt-fog outdoor termination Conductivity 1600±200mS/m, 1000 hour 4.5 7.5 15 22.5 No flashover