KYN28A-24(Z) withdrawable indoor metal-enclosed switchgear

KYN28A-24(Z) withdrawable indoor metal-enclosed switchgear is suitable for three-phase AC 50Hz systems rated at 24kV. It receives and distributes network power in power plants, substations, industrial and mining facilities, and high-rise buildings, and provides circuit control, protection and monitoring. It meets GB3906 "3-35kV AC metal-enclosed switchgear", DL404 "Technical requirements for ordering indoor AC switchgear", and IEC298 "AC metal-enclosed switchgear and controlgear for rated voltages above 1kV and up to and including 52kV". Its five interlocking protections prevent incorrect circuit-breaker operation, racking the truck under load, closing the earthing switch onto a live circuit, energizing a circuit with the earthing switch closed, and entering a live compartment.

Altitude: no more than 2500m.

Maximum ambient temperature +40°C, lower limit -10°C.

The daily average of relative humidity is not greater than 95 per cent and the monthly average is not greater than 90 per cent.

There should be no conductive dust in the air sufficient to corrosive metal and damage the insulation gas, and no fire, explosive hazards, serious filth and severe vibrations.

Note: Any failure to meet the above environmental conditions shall be made at the time of order and shall be made in accordance with special requirements.

1. Main circuit programme numbering, use, single-line system charting, organization charting and flat layout of the distribution room, etc.

2. Accompanying circuit wiring, endline organization.

3. The type, specification, quantity of electrical components within the switch equipment.

4. Requirements for the control, measurement and protection of switches and other locking and automatic devices.

5. If a busbar bridge connection is required between switchgear units or for an incoming panel, specify the busbar bridge's rated current-carrying capacity, span, height above ground and any other specific requirements.

6. Where annexes and spare parts are required, categories and quantities should be presented.

7. Switching equipment is used under special environmental conditions and shall be specified at the time of ordering.

The switchboard consists of two main parts, a fixed cabinet and a removable section (the handcarriage), and the outer casings of the switch equipment cabinet and the partitions of the functional units are made from the external import of two millimeters of aluminum and zinc. The shell protection level of the switch cabinet is IP4X. The protection level when the breaker door opens is IP2X. The KYN28A-24(Z) switchboard can be fitted with a VD4-24, VS1-24 vacuum breaker handcar. Switchboards can be installed in parallel with dual cabinets, i.e. back-to-back or face-to-face double queues. As the installation and debugging of the switchboards are taking place in the front. So the switchboard can be installed against the wall. To save land area. Increased installation and flexibility of the switchboard.