- General information
- Technical parameter
Disconnectors with low switching capacity show visible disconnection between two circuits in the network. They are produced for indoor and outdoor substations.
In order to keep workload at a minimum in course of replacement projects in existing substations, SERW can supply disconnectors with exactly the connection points of the installed devices. All our disconnectors can also be equipped with earthing switches.
The main strengths of our disconnectors:
- Special solutions for high current load up to 10.000 A are available
- Knife type construction
- Single-, double- and three-pole version
- Earthing switch available as an option
The drives of our devices are mounted directly on the frame, on a special table or on the front of the cell. Project-specific design after consultation.
up to 10.000A
|Rated short-time withstand current||
16 to 80kA (1s)
|Rated peak withstand current||
40 to 200kA
|Rated power-frequency withstand voltage 50 Hz, 1 min - to earth||10kV||20kV||28kV||50kV||70kV|
|Rated power-frequency withstand voltage 50 Hz, 1 min - accross open disconnector||12kV||23kV||32kV||60kV||80kV|
|Rated lightning impulse withstand voltage1,2/50µs - to earth||40kV||60kV||75kV||125kV||170kV|
|Rated lightning impulse withstand voltage 1,2/50µs - accross open disconnector||46kV||70kV||85kV||145kV||195kV|
All our products are produced according to the norm IEC 62271-102. We ensure our quality with the quality management system ISO 9001.
Besides standard products SERW can also rebuild or overhaul devices of discontinued product lines of 3rd party manufacturers. On demand SERW provides measurement of the existing substations to propose project specific solutions. After the installation of our switching devices we take quick service and delivery of spare parts for granted.