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XGN66-12 Series
Metal-enclosed Ring Main Unit Switchgear

XGN66-12 Series Metal-enclosed Ring Main Unit Switchgear

Introduction


XGN66-12 Series Metal-enclosed Ring Main Unit Switchgear is suitable for power systems with a voltage of 12kVAC (50Hz). XGN15-12 series has the advantages of simple structure, flexible operation, reliable interlock, convenient installation, etc. It is especially suitable for places such as small secondary substations, switching stations, power distributions, urban residential areas, industrial/mining enterprises, shopping malls, airports, subways, wind power generations, hospitals, stadiums, and railways.

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Basic Parameters


Rated voltage: 3/6/7.2/12KV

Rated normal current: 630/1250A

Rated short-circuit breaking current: 20/25/31.5KA

Rated short-circuit making current (peak): 50/63/80KA

Rated short-time withstand current (in 4 sec): 20/25/31.5KA

Rated peak withstand current (peak): 50/63/80KA

Rated lightning impulse withstand voltage (peak): 75KV

Rated closed-loop breaking current: 630KA

Ingress protection ratings: IP3X

Applied standard: GB3906-2006, IEC60298-1990, GB/T11022-2011

Features


The switchgear adopts the mechanical locking device, the locking structure is simple, easy to operate, safe and reliable.

Only after the circuit breaker is actually disconnected, can the locking position be changed by the handle to prevent disconnecting the isolation switch with load.

When the circuit breaker and the upper and lower isolation switch are in the closed state, and the handle is in the "working" position, the front cabinet door cannot be opened to prevent people from entering the live compartment by mistake.

When the circuit breaker and the upper and lower isolation switches are in the closed state, the handle cannot be turned to the "overhaul" or "breaking" position to avoid accidentally breaking the circuit breaker. When the handle is in the "breaking" position, it can only break the upper and lower isolation switch, and cannot close the circuit breaker to avoid accidental closing of the circuit breaker.

When the upper and lower isolation is closed, the grounding switch cannot be closed, and the handle cannot be turned from the "break" position to the "overhaul" position, which can avoid operating the live ground wire.

Application Environment


Ambient temperature: -15℃~+40℃

Altitude: ≤1000m

Relative humidity: daily average ≤95%, monthly average ≤90%

Seismic fortification intensity: Ⅷ

Installation site: no severe vibration and impact, and no fire, chemical corrosion, explosion and other dangers.

* If you need to customize according to your special needs, please contact us.


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