Product features and overview
KYN28-12 indoor armored type AC metal enclosed switchgear (hereinafter referred to as switchgear), 12kV three-phase AC 50HZ single bus and single bus section system of the secondary substation power supply and large high-voltage motor starting, the implementation of control protection, monitoring. The switchgear meets the requirements of IEC298, GB3906 and other standards, and has five anti-interlocking functions, such as preventing the push-pull circuit breaker with load, preventing the wrong opening and closing circuit breaker, and grounding switch. KYN28-12 indoor AC metal enclosed switchgear is a miniaturized armored air insulated switchgear with complete specifications and system solutions, electrical parameters up to 4000A, rated short-circuit breaking current 40kA, switchgear adopts a medium-mounted design, equipped with reliable ZN63(VS1), HNX, VD4 and other vacuum circuit breakers, and switchgear It has a reliable grounding device with the hand car, which can fully realize the safe operation of the switchgear.
Main technical parameters
1. Rated voltage :12k∨
2, rated insulation level :1min power frequency withstand voltage :42kV, 48kV lightning impulse withstand voltage :75kV, 85kV
3, rated current :630A, 1250A, 2000A, 3150A, 4000A
4, 4s rated short-time withstand current :25kA, 31.5kA, 40kA, 50kA
5, rated peak withstand current :63kA, 80kA, 100kA, 125kA
6, protection level :|P4X
7, appearance size (width × depth X height)mm=650×800, 1000×1500, 1660×2300
