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Disconnectors DSH Type 24kV/630A

Medium Voltage Disconnectors (20/24 kV), rated current 630 A, available in single-pole and three-pole configurations.

Suitable for outdoor installation, manually operated with vertical break operation, commonly installed in Overhead Distribution Networks. Manufactured with porcelain or synthetic insulators.

The Disconnectors are produced by Stalco S.A. according to International Standards IEC 62271-102 and IEC 60694 (IEC 62271-1) and the technical specifications of HEDNO:

 

 

Single Pole

 

Three Pole

Porcelain 

 

TD-309/30.08.06

 

TD-310/30.08.06

 

 

 

 

 

Synthetic 

 

TD-311/05.09.06

 

TD-312/05.09.06

The Disconnectors have been successfully installed in the Medium Voltage network for 30 years. 

Description

Designed to withstand the most adverse environmental conditions and high levels of pollution. The insulators are made of high-quality porcelain or synthetic materials. The disconnector contacts, terminals, and moving contact are made of tin-plated copper.

The contacts are self-cleaning and always maintain stable pressure. In a closed position, the Disconnectors can withstand forces from earthquakes, wind, etc., without opening. All screws, nuts, washers, etc., are made of galvanized steel to ensure the longevity and proper operation of the Disconnectors.

Single-pole Disconnectors are operated using an insulating rod, while three-pole Disconnectors through a metal handle. They both can be installed vertically or at 300 angles from the vertical.

Environmental Conditions

Ambient Temperature

-250C to +450C

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 designed to comply to the same operating conditions.

Operating Conditions

 

 

Single Pole

 

Three Pole

Nominal Voltage

 

20 kV

Max. Operating Voltage

 

24 kV

Frequency

 

50 Hz

Nominal Current

 

630 A

 

Short-Circuit Current Level

 

10 kA (rms) / 25 kA (peak)

Short-Circuit Duration

 

3 sec

Insulation Strength

 

24 / 50 (60) / 125 (165) kV

Mechanical Strength

 

1.000 operations

Insulator

 

Porcelain or Composite

Sales List

Contract No.

Year

Pieces

5800011

1990

1.158

2830031

1993

445

2830021

1994

438

2870042

1995

468

2860052

1997

323

2880012

1999

279

2890022

1999

179

4083062

2003

156

7132112

2004

35

4084022

2005

499

IPTO

2013

200

6300003509

2020

114

5030081

2021

7.305

6300004983

2023

90

5032031

2023

2.000

Total

13.689

PPC Product Νο.

Single Pole

 

331004560

Three Pole

 

331009090