KYN28-12 Series Metal-clad Withdrawable Switchgear is suitable for 3-phase AC 50Hz/3.6-12kV single busbar and single busbar segmented power systems, used to receive and distribute electrical energy, and to control, protect, and monitor circuits. KYN28-12 switchgear is fully designed to withstand internal fault arcing, with a maximum seismic rating of AG5 (seismic intensity of 9 degrees). It has passed the type test certification of national authoritative testing institutions and meets standards such as GB/T3906 and IEC62271. It has been widely used in power grid systems, power plants, new energy, petrochemical, railway, industrial and mining, commercial buildings, and other fields.

Product features:
1.Metal armor closure effectively prevents the spread of accidents;
2.Complete isolation of high and low voltage rooms;
3.Adopting a double-sided maintenance design, compact structure and convenient maintenance;
4.The circuit breaker adopts a modular design, with a simple and reliable structure and long service life;
5.Complete five protection interlock functions to prevent misoperation and achieve door closing operation;
6.Fully resistant to internal fault arc design, up to 40kA/1S;
7.Various main switches can be selected, such as VCB, vacuum contactors, and load switch handcarts;
8.It can be equipped with an electric operation module to achieve remote driving of circuit breakers and grounding switches;
9.Intelligent components can be configured to achieve real-time monitoring functions such as circuit breaker mechanical characteristics, one click sequential control, visual operation, temperature, partial discharge, etc. At the same time, it can obtain comprehensive data from automatic collection, storage, and analysis equipment for power monitoring, energy consumption management, and health status assessment, comprehensively improving the full lifecycle management capability of switchgear.

Parameter:
Rated voltage                                                      kV                     40.5
Rated power frequency withstand voltage     kV/1min       95
Rated lightning impulse withstand voltage     kV                     185
Rated short-time withstand current                     kA/4s                     25/31.5/40
Rated peak withstand current                             kA                     63/80/100
Rated current of busbar                                      A                     630/1250/1600/2000/2500/3150