Product overview 

KYN28A-12 is equipped with a moving-open indoor AC metal closed switch equipment. As the purpose of receiving, distributing, controlling and protecting the power transmission of power plants, power systems and “    substations of industrial and mining enterprises, it can also start high-voltage motors with thousands of times to meet the requirements of interlocking. The switch cabinet can be equipped with ABB's VD4 vacuum circuit breaker and domestic VS1 vacuum circuit breaker. It is actually a power distribution device with superior performance. It has the advantages of flexible scheme combination, compact structure, safety and reliability, convenient maintenance, impact resistance, corrosion resistance and other advantages.

Main uses
KYN28A-12 Kaizhuang portable in-house AC metal closed switching equipment is suitable for thousands ofAC SO Hz and 3~24kV power systems. It is widely used in thousands ofpower plants, substations, open and closed stations, urban power distribution, industrial and mining enterprises, shopping malls, airports, subways, wind power, hospitals,  stadiums, railways, tunnels and other places to realize control, protection and monitoring. It can be equipped with a
domestic VS1 vacuum circuit breaker, which is a power distribution device with superior performance. It has the
advantages of flexible scheme combination, compact structure, safety and reliability, convenient maintenance, impact resistance, corrosion resistance, etc.
Structural characteristics
>The central circuit breaker is easy to operate,has strong interchangeability and small maintenance.
>Each room has an independent pressure release channel to ensure personal safety.
>The protection level of the switchgear is high, and the "five defenses" interlocking is reliable;
>The cable room has ample space and is convenient for installation and maintenance;
>The intelligent switch cabinet has a self-diagnosis function, which can correct and feedback the operation status in time. >Real-time monitoring of contact temperature rise and switch coil;
>Online monitoring of circuit breaker overtravel (optional),
>On-line monitoring of vacuum in the arc extinguishing chamber (optional), >Wide range of high-precision electronic transformers;
>Handcar with blocking protection and grounding switch can achieve key-type electric operation,
>Integrated primary state display, temperature and humidity control, and high-voltage charged display;
>The number of zinc oxide lightning arrester discharges, leakage current and capacitive current can be uploaded digitally by RS485 interface.