Withdrawable Switchgear Module COMPASS and COMPASS I 110 - 170 kV
Compact air-insulated switchgear is fully assembled and tested in factory.
A COMPASS module includes all the high voltage functions of a complete switchgear bay in a single module. It is suited for both indoor and outdoor installations. The module can be transported by ordinary vehicles or in a standard high-cube container.
Each COMPASS can include:
 
- Circuit-breaker
- Disconnectors with their own motor drive*)
- Earthing switches with their own motor drive*)
- Current transformers
- Voltage transformers (optional)
- Surge arresters (optional)*)
- Spring Drive FSA
- Local control cabinet
Applications
- Integration of renewable power into the grid
- Railway substations
- Substation extensions or bay replacements
Why Hitachi Energy?
- Longest experience and largest installed base with COMPASS and COMPASS I, 2000 bays in service
- COMPASS can be serviced and inspected easily by lowering a section of the module, which includes circuit-breakers, current transformers and the mobile contacts of the disconnector. The necessary operations are carried out at ground level, so safety and efficiency are ensured*)
- Delivered fully assembled and tested, energizing within 24 hours, thus allowing a faster commissioning time for the whole substation
- A COMPASS module requires up to 50% less space compared with a conventional air-insulated switchgear bay
- Global service organization, local everywhere
*) NOT valid for COMPASS I
Brief performance data
| Type | 
 | COMPASS | COMPASS I | |||
|---|---|---|---|---|---|---|
| Circuit-breaker drive | 
 | Spring Drive | Spring Drive | |||
| Rated voltage | kV | 123 | 145 | 170 | 145 | 170 | 
| Rated frequency | Hz | 50/60 | 50 | 50/60 | 50 | |
| Rated continuous current* | A | 2000 | 3150 | |||
| Rated short-circuit breaking current (1s) | kA | 40 | 40 | |||
| Lightning impulse withstand level - LIWL* | kV | 550 | 650 | 750 | 650 | 750 | 
* Standard values as per IEC. Additional data on request.
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