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DISTRIBUTION AIR BREAK SWITCHES
Description
- Pole mounted disconnectors up to 52kV.
- Available in off load and load break.
- Available in single pole or H-pole mounting.
- Silicone insulators.
- Eskom SA approved.
- Pull to open / Pull to close.
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Characteristics |
Value |
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|
Applicable standards |
IEC 62271-102, IEC 60265 |
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Rated voltage |
24kV |
36kV |
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Impulse withstand voltage Phase-Earth |
125kV |
170kV |
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Impulse withstand voltage over isolating distance |
145kV |
195kV |
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Power frequency voltage 1 min wet, Phase-Earth |
50kV |
70kV |
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Power frequency voltage 1 min wet, over isolating distance |
60kV |
80kV |
|
Rated frequency |
50 - 60Hz |
50 - 60Hz |
|
Rated current *) |
630A |
630A |
|
Short time current |
25kA |
25kA |
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Duration of short time current |
3 sec. |
3 sec. |
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Peak withstand current |
62,5kA |
62,5kA |
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Making capacity |
5kA |
3kA |
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Interupting capacity with the loadbreak heads of mainly active load at rated voltage and co =0,7 |
630A |
400A |
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Interupting capacity with the loadbreak heads of mainly active load at rated voltage and co =0,15 capacitive |
25A |
16A |
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Interupting capacity with the loadbreak heads of mainly active load at rated voltage and co =0,15 reactive |
16A |
4A |
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Ringinterupting capacity with the loadbreak heads of mainly active load at rated voltage and co =0,3 reactive |
400A |
400A |
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Interupting capacity with breaking whip of mainly active load at rated voltage and co =0,3 reactive |
25A |
16A |
|
Interupting capacity with breaking whip of cable and line changing currents at rated voltage |
15A |
10A |
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Permissable ice load |
Up to 20mm |
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Mechanical endurance |
>2000 operations |
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Temperature range |
-50°C to +50°C |
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Insulator material |
Porcelain, silicon rubber, Outdoor epaxy resin |
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Insulator creepage distance |
Various of different insulators |
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