KYN28A 24KV Metal Clad Medium Voltage Switchgear 1000m Altitude MV Switchgear Panel

KYN28A Metal-clad AC Switchgear withdrawable mid-mounted VCB, 12KV/24KV

Service condition for KYN28A Metal-clad AC Switchgear withdrawable mid-mounted VCB, 12KV/24KV

• Altitude:≤ 1000m
• Ambient air temperature: -10℃ to +40℃
• Ambient humidity: Daily average humidity ≤ 95%;
• Monthly average humidity ≤ 90%;
• Earthquake intensity ≤ magnitude 8
• Without corrosive, flammable gas and steam and no regular severe shock
• For special service condition, need to negotiate with manufacture.

Structure of KYN28A Metal-clad AC Switchgear withdrawable mid-mounted VCB, 12KV/24KV

1. Enclosure

Switchgear enclosure adapts imported aluminum zinc steel sheet by CNC machine tool processing, and uses multi-fold workmanship strong oxidation resistance and corrosion resistance, light weight, stronger mechanical strength.

Enclosure with degree of protection IP4X is divided into four separated compartments, when the door opens the compartment and circuit breakers the degree of protection is IP2X.

2. Trolley (VCB)

The trolley frame assembled with thin steer after CNC machine tool. The trolley co-ordinated with the switchgear as to make the mechanical interlock safe and reliable .Trolley with the same specifications are interchangeable.

Circuit breaker trolley is equipped with vacuum circuit breaker and other auxiliary equipment, the VCB can be circuit VD4 of ABB or VT19 manufactured by ourselves. It can be reliably locked in disconnected position, test position to ensure reliable interlock.

3. Busbar component

The branch bus is connected to the static contact box and main busbar without other supports .Main busbar is separate and fixed by the bush, if happens failure arc

This construction can effectively prevent the accident spreading to other cabinets.

4. Instrument cabinet

All kinds of switch, status-indicator and measuring instrument etc could be mounted on the door of the instrument. Protective relay, secondary wire, terminals and air switch, low-voltage fuses, etc. are equipped inside the instrument cabinet.

5. Fail-safe interlock

There is a “anti-5” mechanical latch between the disconnector, VCB and the panel door, a reliable measurement to prevent from mis-operation, convenient and safe maintenance, flexible operation.