Maximum reliability and minimal maintenance
Horizontal double break disconnector GW56
The GW56 disconnectors are available up to 245 kV, 4000 A and 50 kA. These disconnectors have a low friction design and offer minimized contact resistance. They are equipped with interlocking for reliability in extreme conditions. Some other important features of these disconnectors are:
- Contact plates with self-cleansing capability
- Contact pressure kept unchanged by stainless springs
- Superior design of mechanical interlock
- Ice breaking capacity
Applications
The horizontal double break disconnector is suitable for substations with limited phase space and installations with low vertical clearance.
Why Hitachi Energy?
- Worldwide experience
- Maximum reliability and minimal maintenance
- Energy efficient solution
- Easy and quick erection
- Reliable and smooth operation
- Suitable for wide range of environmental conditions
Brief performance data
| Rated voltage (kV) | up to 245 |
|---|---|
| Rated current (A) | up to 4000 |
| Short time withstand current (kA) | up to 50 |
| Power frequency withstand voltage (kV) | |
| · against earth | 460 |
| · across isolating distance | 530 |
| Lightning impulse withstand voltage (kV) | |
| · against earth | 1050 |
| · across isolating distance | 1200 |
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