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KYN28A-12(GZS1)Metal-clad withdrable switchgear 
KYN28A-12 (GZS1) out of metal sheathed line switching equipment 3 ~ 10kV three-phase AC 50Hz, for acceptance and distribution of electric power sub-single-bus control unit of the transmission and distribution. Mainly used in power plants, power substations, industrial enterprises and electrical distribution systems
Secondary substation of electricity, and large-scale high-voltage power transmission, such as motor starting. Control, protection, monitoring.
□ fully compatible KYN28A-12, GZS and many of the technical performance of switching equipment and programs.
□ more options and smaller dimensions.
□ a full range of mechanical interlocking to protect operating characteristic.
□ the configuration of a wide range of vacuum circuit breakers:
Westing house corporate W-VAC vacuum circuit breaker.
ABB Vacuum Circuit Breaker Company VD 4.
SIEMENS company 3AH5 vacuum circuit breaker.
MITSUBISHI Corporation Vacuum Circuit Breaker 10-VPR.
GE Company ZN 28GE, VB2 vacuum circuit breaker.
Merlin Gerin Company EV 12 vacuum circuit breakers.
Senyuan Electric VS 1 vacuum circuit breaker.
A variety of domestic VS 1, ZN 28, ZN63, ZN ... ... vacuum circuit breakers.
□ the use of imported and domestic micro-computer monitoring and remote control, or electromechanical relay protection and monitoring instrumentation.
□ luxury import type, universal type, choose economy.

■ Main Technical Parameters Switchgear
Item Units data
Rated voltage kV
3.6 7.2 12
Rated insulation level 1min power frequency voltage kV 24 32 42
Lightning impulse voltage (full wave) kV 40 60 75
Rated Frequency Hz 50
Rated Current A 5~3150
Main busbar rated current A 1600,2000,2500,3150
Branch busbar rated current A 630,1250,1600,2000,2500,3150
4 seconds heat-stable current (RMS) kA 16,20,25,31.5,40,50
Dynamic Stability rated current (peak) * kA 40,50,63,80,100,125
Protection level   Shell IP4X, circuit breaker door open for IP2X

*: Short-circuit current transformer capacity should be considered in isolation

■ Switchgear Dimensions(mm)

Circuit Breaker Model W-VAC VPR 3AH5 VD4、VS1、ZN28、ZN63
 H 2300 2300 2300 2300
W ≤1250A 700 840 800 800
>1600~3150A 800 1000 1000 1000
D 1660 1660 1660 1500(注2)

Notes: 1, in addition to changes in the width of circuit breaker cabinet, the other counters are 800 wide. 2, the depth of the cable into the round for 1660.

 
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