KYN28A air-insulated metal-clad withdrawable switchgear (hereinafter as “switchgear”) is a necessary indoor power distribution equipment 3-phase AC 50/60Hz. It is mainly used to receive and distribute 7.2~24kV network electrical and control protection and monitoring to line circuit. Relay chamber panel can install in various types of microprocessor based relay protection device , and can realize the intelligent control system, with remote control, telemetry, remote communication and remote transfer function,through the CAN communication interface with fieldbus control network to prevent the mal-operation of circuit breaker, to prevent pushing and pulling handcart with load, to prevent grounding switch closed with charged, to prevent the grounding switch in the grounding position transmission and to prevent into live space, which is referred to as the "five-anti" function. The cabinet is equipped with VS1 , Vacuum circuit breaker, also can be equipped with imported VD4 vacuum circuit breaker and VC series vacuum contactor. The switchgear meet the requirements of standard IEC62271-200 ,IEC62271-100 etc



* ServiceConditions

1. Ambient temperature:-30℃~ +50℃;

2. Altitude: Not exceed 2500m above sealevel;

3. Ambient humidity: Daily average RH ≤ 95%; Monthly average RH ≤90%

Water vapor pressure:Daily average RH ≤ 2.2kPa; Monthly average RH ≤ 1.8kPa;

There may be condensation, when the temperature plunged with filth, the products apply to the following two conditions more severe than normal

(1). Condensation not frequently(average monthly not more than two times) with mild pollution; (2). There is no condensation (average yearly not more than two times) with serious pollution;

4.No violent vibration, bumps and vertical gradient not more than 8° of place

Note:1. Allow to -30℃ to storage and transportation.

2. When the area of altitude exceed 1000m , according to the JB/Z102 «high voltage electrical appliances using the technical requirements of the altitude» , when the altitude is not more than 2000m, low pressure auxiliary equipment does not need to take any measures.

3. When the actual use conditions is different with the above mentioned information,the user and the manufacturer should be negotiated