Switchgear for high-voltage

Switchgear for high-voltageGeneral Introduction KYN28A metal-cased closed drawer switch device is suitable for 3.6 15kV three-phase AC power network of 50Hz single-bus and one bus set of power distribution sub-system device. The equipment canbe used for power distribution and control, monitoring and protectionof the power circuit.It can be applied to the singular bus, and double bus system. The following notable merits are included:KYN28A select the spring mechanism design of VD4, ZN73-12 or VS1-12-type vacuum circuit breakers as the main switch, with compact Construction, superior performance and high reliability.every breaker has the advantage of: longlifetime, less maintenance small size and etc.Meet with the standard of GB3906, DL/T404, IEC298.Perfect and reliable functions prevent wrong operation.Technical parametersSNItemsUnitTechnical parameters1Rated voltage kV3 6 7.2 122Rated current A630 31503Rated short-circuit breaking current kA25,31.5,40,504Rated short-circuit making current kA63,80,100,1255Rated movement steady current kA63,80,100,1256Rated thermo steady current kA25,31.5,40,507Rated thermo steady time S48Protection grade IP2X,IP3X,IP4X9Operation mode Energy charging spring10Overall dimension (W x W x H) mm(800)X(1500)X2200;1000X(1650)X2200