Product overview：

KYN28A-12 indoor metal-armored medium switchgear is a complete indoor distribution unit for 3-10kV, three-phase AC 50Hz single-bus and single-bus sectional system. Mainly used in power plants, small and medium sized generators, power distribution in industrial and mining enterprises, secondary substation of electric power system and starting of large high-voltage motor, etc., for control, protection and monitoring.

The switchgear meet IEC298, GB3906 standard requirement, prevent the loading of push-pull circuit breaker handcart, prevent points close circuit breaker, to prevent the earthing switch is in the closed position close circuit breaker, prevent straying into charged compartment, prevent mistake when charged and earthing switch interlock function, can with VS1, VD4, VB2, 3 ah5 vacuum circuit breaker, power distribution equipment is a kind of superior performance.
The switchgear has the advantages of safety and reliability, wide adaptability, compact structure of cabinet and small floor space.
Each high pressure compartment is completely isolated, and each high pressure compartment is equipped with a pressure release channel at the top to prevent the influence of internal fault arc on adjacent compartments and ensure equipment and personal safety.
With a variety of reliable locking device, can effectively prevent the wrong operation.
All functional operations, including circuit breaker closing, testing and ground switch operation, can be performed with the panel closed.
Through the panel window, the position, closing and closing, storage state and cable connection of the circuit breaker can be easily viewed.
Flexible combination to meet the needs of specific projects.
The cabinet is made of high-strength anticorrosive aluminum-zinc steel after being processed and molded by NUMERICAL control machine tools and multiple bending, which is connected by riveting nuts. It is firm and durable. The whole cabinet is welded without welding, and has strong anti-oxidation corrosion ability.
 
Technical parameters:

Project			Unit	Parameter
Nominal voltage			kV	12
Nominal frequency			Hz	50
Rated power frequency withstand voltage 1min		Relative to, relative to	kV	42
		Isolating fracture	kV	48
Rated lightning impulse withstand voltage		Relative to, relative to	kV	75
		Isolating fracture	kV	85
Main busbar rated current			A	630/1250/1600/2000/2500/3150
Rated short-time withstand current			kA	20（4S）/25(4S)/31.5(4S)/40(3S)/50(3S)
Rated peak withstand current			kA	50/63/80/100/125
Enclosure protection class	The outer wall of cabinet put oneself in another's position			IP4X
	Breaker chamber door open			IP2X
Size (width × depth × height)			㎜	800×1500（1660）×2300
			㎜	1000×1500（1660）×2300
Weight			㎏	800-1200

• Ordering instruction:
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21. The primary system diagram shall include the following data: switching capacity, rated voltage and rated current of the incoming power supply; Rated current of each outlet circuit; Models and specifications of main components.
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21. Switch cabinet arrangement drawing and plane layout dimension drawing.
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21. The secondary schematic diagram, including the operation, signal, rated voltage of the protection circuit and specifications and models of each electrical component.
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21. Small bus layout
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21. When bus bridge is needed, the span and height dimensions and opening dimensions shall be provided by the user.
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21. Spare parts quantity
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21. When customers have special requirements, they can negotiate with the manufacturer when ordering.
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