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Disconnectors DSP Type 24kV/630A

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
Description

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.

Environmental Conditions

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.

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