Air-Insulated Switchgear（up to 24kV)

The KYN28 series is an indoor, metal-clad, withdrawable medium-voltage air-insulated switchgear designed for power distribution, protection, and control. lt is widely deployed in power generation plants, substations, industrial and mining facilities, and commercial infrastructure.

Product Description

KYN28 medium-voltage switchgear,a metal-clad withdrawable switchgear for 10kV power distribution,is designed for incoming/outcoming panel,bus connection panel and other power feeder control.Here are some key technical parameters for KYN28 swithchgear:rated current(630A~4000A),breaking capacity(25kA~40kA,higher options available),VCB operating time ≤60ms,visible breakpoint via truck-mounted design,5-interlock mechanism (Anti-misoperation),smart Monitoring(wireless contact temp sensing、arc-flash protection、power quality analysis(THD＜3%),standards compliance(GB/T 3906 (CN) / IEC 60298 (Int’l))

Product Advantages

Robust Enclosure DesignMaterial: Aluminum-zinc coated steel (standard) / Stainless steel (corrosive environments) Protection Level:IP4X (enclosure) / IP2X (internal compartments) Withdrawable Mechanism:Circuit breaker mounted on truck assembly for easy maintenance without de-energization.
High-Performance Vacuum Circuit Breaker： Compatible Brands:VS1 (Standard) / ABB VD4 / Siemens 3AH Breaking Capacity: 25kA~40kA Life Endurance:Mechanical: 10,000~30,000 operations,Electrical: 10,000 operations full-capacity interruptions
Safety & Interlocking： 5-Protection Interlocks: Prevent unauthorized breaker operation Block access to live compartments Prevent earthing switch errors Interlock live closing of earthing switches Prevent truck withdrawal under load
Smart Monitoring Options： Supports temperature and humidity control, live display, and intelligent protection devices (such as microcomputer integrated protection). Optional wireless temperature measurement, arc flash protection, and remote communication (RS485/Modbus).
Modular Configurations： Standard Schemes:Incoming/Outgoing cabinet.Bus connection cabinet, PT/Metering cabinet Installation Flexibility:Bottom in/out cable entry,Busbar bridging (horizontal/vertical)

Key Technical Parameters of KYN28A Switchgear

Feature	unit	Specification
Feature	unit	KYN28A-12						KYN28A-24
Rated voltage	kV	12						24
Rated frequency	Hz	50/60
Rated power frequency withstand voltage(1min)	kV	42（main circuit,phase-to-ground & phase-to-phase） / 48（breaker isolation gap,across open contacts）						65（main circuit,phase-to-ground & phase-to-phase） / 79（breaker isolation gap,across open contacts）
Rated current	A	630	1250	1250	2500	3150	4000	1250	1250	2500
Rated short circuit breaking current	kA	20	25	31.5	31.5	40	40	25	31.5	31.5
Rated peak withstand current	kA	50	63	80	80	100	100	63	80	80
Enclosure dimensions(WxDxH)mm	mm	800(1000)×1450(1750)×2240						1000X1800(2170)X2370

It is widely applied in industries such as power grids, petrochemicals, new energy, industrial and mining enterprises, data centers, and municipal engineering.

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Air-Insulated Switchgear（up to 24kV)

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