Single Pole Medium Voltage 30/36 kV Disconnectors, operating at 630 A nominal current. They are capable of outdoor installation and are manually operated with a hookstick type vertical break.
They are usually used in overhead distribution lines for isolation purposes and installed at both sides of a circuit breaker in Substations, in 30 kv capacitor bays or in 30 kV earthing resistors.
Manufactured by STALCO S.A. according to IEC 62271 and IEC 60694 Standards.
Designed to withstand the harshest environmental conditions and high pollution levels. The base of the Disconnector and all non - current carrying metal parts are made by formed hot dip galvanized steel.
The insulators are manufactured of high-quality brown porcelain. The Disconnector’s contacts, terminals and blade are made of tin-plated copper.
The contacts are self-cleaning and always maintain constant pressure and once secured in the closed position can withstand seismic, wind and other vibration forces without opening.
The hook is made of hot dip galvanized steel. All screws, nuts and washers are made of hot – dip galvanized steel to ensure long and trouble-free operation.
The operation of the Disconnector is done manually using a hookstick. The Disconnector can be mounted on a steel structure, vertically or at 300 .
Ambient Temperatures |
|
-250C to +450C |
Max. Altitude |
|
1.000 m |
Relative Humidity |
|
≤ 95 % |
Max. Ice Coating |
|
10 mm |
Pollution Level |
|
Moderate to Heavy |
Wind Speed |
|
150 km/h |
Rated Voltage |
|
30 kV |
Max. Operating Voltage |
|
36 kV |
Nominal Frequency |
|
50 Hz |
Nominal Current |
|
630 A |
Insulation Level |
|
250 kV |
Mechanical Endurance Class |
|
1.000 operations |
Full wave impulse withstand (positive / negative) |
|
250 kV / 165 kV |
Net Weight |
|
60 kg |