Receives utility or plant power.
Known incoming interface, factory-assembled E-House, FAT-tested protection logic, and a single hand-over interface to the rest of the plant.
- Use when
Power intake must be repeatable, tested, and ready for site energization.
- Known boundary
Incoming supply, metering, protection, layout, earthing, and handover interface.
- Operating value
Clearer energization, easier inspection, visible intake status.
Typical contents
- MV circuit breaker (VCB) or ring main unit
- Metering CTs / VTs
- Numerical protection relay
- Surge arrestors & earthing system
- LV auxiliary supply & control panel
Rated envelope
- Voltage
- up to 33 kV
- Rated current
- 630 – 2500 A
- Short-circuit
- 25 – 50 kA / 1 s
- Enclosure
- IP54 / IP65 outdoor
- Ambient
- -10 to +45 °C
Standards
- IEC 62271-200
- IEC 61439-1/-2
- IEC 61850
- IS / IEC 60076