| TIS.2623 Part
7(2)-2564 |
Type 56 / 57-4 |
| DIMENSIONS
|
| Leakage
distance,
minimum, mm |
953 |
| Protected leakage
distance, minimum, mm |
483 |
|
| MECHANICAL VALUES |
| Cantilever
strength, kN |
12.5 |
| Cantilever proof
load, kN |
5 |
|
| ELECTRICAL
VALUES |
|
Low-frequency
dry flashover, kV |
140 |
|
Low-frequency
wet flashover, kV |
95 |
|
Critical-
impulse flashover, positive,
kV |
225
|
|
Critical-
impulse flashover, negative,
kV |
300 |
|
| RADIO INFLUENCE
VOLTAGE DATA |
| Low-frequency
test voltage, rms to ground,
kV |
44 |
| Maximum RIV at
1000 kHz, microvolts |
200 |
|
|
| Colour of
Insulator
|
BROWN
|
| Weight of
Insulators, kg
|
14.5
|
|
|
