Medium Voltage Single-Pole and Three-Pole Disconnectors (20/24 kV) rated current 630 A. Suitable for outdoor use, with vertical break operation, manually operated, typically used at the ends of automatic circuit breakers in 150kV / 20kV substations.
Manufactured by Stalco S.A. in compliance with International Standards IEC 62271-102 and IEC 60694 (IEC 62271-1) and the technical specifications of PPC:
- Single Pole: TD-66/2(01.2011) 5.1
- Three Pole: TD-68/2(01.2011) 5.3
Designed to withstand the most adverse environmental conditions and high levels of pollution. The disconnector base and non-current-carrying metal parts are made of galvanized steel.
The insulators are self-cleaning and maintain stable pressure, capable of withstanding forces from earthquakes, wind, etc., without opening when closed.
The hook, all screws, nuts, washers, etc., are made of galvanized steel, ensuring the longevity and proper operation of the Disconnectors.
The Disconnectors are manually operated with an insulating rod, and they can be installed vertically or at 300 angles from the vertical.
Ambient Temperature |
-25 to +45 οC |
Max. Operating Altitude |
1.000 m |
Relative Humidity |
≤ 95 % |
Max. Ice Coating |
10 mm |
Atmospheric Pollution Level |
Moderate to Heavy |
Wind Speed |
150 km/h |
The Single and Three Pole Disconnectors are manufactured to comply to the same operating conditions.
|
|
Single Pole |
Three Pole |
|
Nominal Voltage |
|
20 kV |
||
Max. Operating Voltage |
|
24 kV |
||
Nominal Frequency |
|
50 Hz |
||
Nominal Current |
|
630 A |
||
Insulation Level |
|
250 kV |
||
Mechanical Strength |
|
1.000 operations |
||
Full wave impulse withstand (positive / negative) |
|
250 kV / 165 kV |
||
Net Weight |
|
40 kg |
60 kg |