Overview The i-AY1A-40.5 withdrawable AC metal-enclosed switchgear and i-AY1-40.5 (G) plateau type withdrawable AC metal-enclosed switchgear (LSC2B-PM) (abbreviated as switchgear hereinafter), all assembled type switchgears of Tianshui Changcheng Switchgear Group Co., Ltd., can be equipped with our independently developed EVH1A-40.5 high-voltage AC vacuum circuit breaker, LNA-40.5 high-voltage AC SF6 circuit breaker and EVH1-40.5 plateau type high-voltage AC vacuum circuit breaker. As a 3-phase AC 50Hz indoor distribution system, it not only receives and distributes 40.5kV electric power from the grid, but also performs circuit control, protection and monitoring. The above switchgears satisfy IEC62271-200, GB3906, DL/T404 and other similar standards. And i-AY1A-40.5 further complies with Q/GDW 13088.1-2014 High-Voltage Switchgears purchase standards for rated voltages above 12kV and up to and including 40.5kV. Thus, these products can be used in medium-voltage power systems of various power plants, substations, industrial and mining enterprises, civil and commercial buildings.
Main features: ⚫Cabinet is completely metal-clad. ⚫It matches self-developed EVH1A-40.5 high-voltage AC vacuum circuit breaker, LNA-40.5 high-voltage AC SF6 circuit breaker or EVH1-40.5(G) plateau type high-voltage AC vacuum circuit breaker. ⚫LV compartment and each HV compartment are separated from each other. ⚫Equalized electric field and insulated main conductor ensure high insulating property. ⚫Vacuum circuit breaker and spring operating mechanism in the cabinet require minimal maintenance. ⚫Cable compartment provides enough space for connecting cable heads. ⚫Handcart type has good interchangeability and easy maintenance. ⚫It features long service life, compact size, light weight, safety and high integration.