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 |
