Product Name
Industrial IP4X KYN28A-12 Indoor AC High Voltage 12kV 50Hz 4000A Metal Removable Switchgear
Product Overview
KYN28A-12 indoor AC high-voltage metal removable switchgear is a complete indoor power distribution device with three-phase AC 50Hz, rated voltage 12kV and working current up to 4000A. It is applicable to power plants, substations, industrial and mining enterprises, etc. for receiving and distributing electric energy. It can control, protect and monitor the circuit, and can be used in places with frequent operation.

Product Features
1	Safe and reliable "five prevention" interlocking device can effectively prevent: 1.Prevent false opening and closing of circuit breaker 2.Prevent pushing and pulling circuit breaker handcart with load 3.Prevent closing the circuit breaker when the grounding switch is closed 4.Prevent false closing of grounding switch during live operation 5.Prevention of entering the live space by mistake
2	Optional ZN63A (VS1), VD4, ZN21, 3AH and VEP vacuum circuit breakers, VC7 vacuum contactor load switch and disconnector, etc.
3	It can be divided into circuit breaker handcart, voltage transformer handcart, metering handcart, isolation handcart, etc. according to the purpose, handcart with the same purpose has good interchangeability.
4	The circuit breaker room and cable room can be equipped with heaters to prevent condensation and corrosion.
5	The enclosure protection level of the switch cabinet reaches IP4X, and the protection level between compartments and when the door of the circuit breaker room is o 5 pened is IP2X.
Product Mix
The product is composed ofacabinet and awithdrawable part(handcart). The cabinet structure is made of aluminum-coated zinc plate. The circuit breaker room(handcartroom), main bus room, cable roomand relay instrument room are separated by metal partitions, and all metal structures are reliably grounded. The main bus room and circuit breaker room areequipped with independent pressure release channels.

Project			Unit	Data
Rated voltage			kV	3.6,7.2,12
Rated frequency			Hz	50
Rated current of circuit breaker			A	630,1250,1600,2000,2500,3150,4000
Ratedcurrent of switchgear			A	630,1250,1600,2000,2500,3150,4000
Rated short-time withstand current (4S)			kA	20,25,31,5,40
Rated peak withstand current(peak)			kA	50,63,80,100
Rated short-circuit breaking current			kA	20,25,31.5,40
Rated short-circuit makingcurrent(peak)			kA	50,63,80,100
Rated insulation level	1min power frequency withstand voltage	Pole to pole,pole to ground	kV	24,32,42
		Interfracture	kV	24,32,42
Lightning impulse withstand voltage(peak)		Pole to pole,pole to ground	kV	40,60,75
		Interfracture	kV	46,70,85
protection grade		The shell is IP4X.IP2X when thedoor of the circuit breaker room is opened

Structural Features
Thestructure of the switchgear is shownin the right figure. All-metal modular assembly stnucture.The cabinet body is made ofimported aluminum-coated zincplate with strong corrosion resistance,without surface treatment. It is processed by high-precision equipment, and adopts advanced multiple flanging technology.The connection is connected with rivet nuts and high strength bolts, with high accuracy, light weight and good strength. Thes witchgear can be equipped with QCEI series,VD4series, ZN65series and other vacuum circuit breakers produced by the company, with wide adaptabiity and strong inter change ability. The handcartis equipped with working position, test position and positioning and display device at each position,which is safe and reliable. The cable room can be equipped with up to 9 single-core cables, and the equipment has reliable mechanical and electrical nterlocking devices, fully meeting the "five prevention" requirements. Each room isequipped with pressure relief channel to ensure personal safety of operators.

Industrial IP4X Kyn28A-12 Indoor AC High Voltage 12kv 50Hz 4000A Metal Removable Switchgear

Basic Info.