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Product Overview
    KYN28A-12 type indoor metal armoured middle mounted movable type switching equipment (hereinafter referred to as switchgear) is three-phase AC 50Hz indoor power distribution equipment and used for receiving and distributing 3 ~ 12 kV electricity network and implement circuit control protection and monitoring. On its relay chamber panel, all types of microcomputer comprehensive protection devices can be installed, and realize the system’s intelligent control and remote control, telemetry, remote signaling and remote adjustment function, and via the CAN bus, which is with communication interface, to control field networks. And has a circuit breaker to prevent misuse and prevent sliding trolley with a load, to prevent closing earthing switch under with electricity condition, to prevent the grounding switch transmit power on the grounding position and prevent mistakenly get into the interval, which referred as the "Five Prevents". The cabinet is equipped with VS1 (ZN63), ZN12V vacuum circuit breaker, and also can be equipped with imported VD4 vacuum circuit breaker and VC series vacuum contactors.
Design Standards
    GB3906-1991 "within 10 ~ 35KV indoor AC metal-enclosed switchgear"
    GB/T 11022-2011 Common technical requirements of high voltage switchgear and control equipment standards
    IEC60298 “AC metal-enclosed switchgear and control equipment of rated voltages above 1kV and less than or equal to 50kV "
Model Meaning:
    KYN28A-12’s Meaning: K: metal armor, Y: Removable type, N: indoors, 28A: industry code, 12: rated voltage
Switchgear technology parameters

Item Unit Data
Rated Voltage KV 3.6 7.2 12
1min power frequency withstand voltage KV 24 32 42
Lightning impulse withstand voltage (full-wave) KV 40 60 75
Rated frequency HZ 50
Rated current A 630,1250,1600,2000,2500,3150
4S short time withstand current KA 20,25,21.5,40,50
Rated peak withstand current KV 50,63,80,100,125
Degree of protection Cover:IP4X, spacing board of the compartment: IP2X


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