China KYN28-12 Metalclad AC Enclosed Switchgear Manufacture and Factory

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KYN28-12 Metalclad AC Enclosed Switchgear

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KYN28-12 Metalclad AC Enclosed Switchgear

KYN28A-12 indoor metal clad movable switchgear is a complete power distribution device for 3.6kV~12KV,3 phase AC 50/60Hz,single bus sectionalized system.It is mainly used for power transmissionof middle/smallgenerators in power plants,powerreceiving,transmission for substations in power distribution and power system of factories,mines and enterprises etc.so as tocontrol,protectand monitor the system.
Standard.IEC62271-200

Product Details

Medium Voltage Switchgear

KYN28-12 Metalclad AC Enclosed Switchgear, Withdrawable Type

KYN28A-12 indoor metal clad movable switchgear is a complete power distribution device for 3.6kV~12KV, 3 phase AC 50/60Hz， single bus sectionalized system. lt is mainly used for power transmission of middle/smallgenerators in power plants, power receiving, transmission for substations in power distribution and power system of factories, mines and enterprises etc. so as to control, protect and monitor the system.
Standard: IEC62271-200

Selection

Operating conditions

1. Ambient air temperature: -15℃ ~+40℃ .
2. Altitude: ≤1000m.
3. Relative humidity : Daily average≤95%, daily averange of vapour pressure≤2.2kpa.
4. Earthquake intensity: ≤magnitude 8.
5. Applicable in the places without corrosive and flammable gas and water vapor.
6. Used in place without frequently intense vibrant.
Note: Customized products are available.

Features

1. The cabinet is made of aluminum-zinc coated sheet processed by CNC equipment, andisassembled by bolts or rivets. The structure is fully assembled.
2. The switchgear has various functions to prevent misoperation, including preventing the load-bearing handcart from moving, preventing the live closing and grounding
3. The switchgear is equipped with high-performance VS1 series medium-voltage AC vacuum circuit breakers and solid-sealed vacuum circuit breakers.
4. The busbar adopts heat-shrinkable insulation materials and optimized electrode shapes, with a compact cabinet structure.
This switchgear is technologically advanced, with stable performance, reasonable structure, convenient use, and safe and reliable power distribution equipment

Technical data

No.	Item			Unit	Data
1	Rated voltage			kV	3.6, 7.2, 12
2	Rated frequency of circuit breaker			Hz	50
3	Rated current of circuit breaker			A	630, 1250, 1600, 2000, 2500, 3150, 4000
4	Rated current of switchgear			A	630, 1250, 1600, 2000, 2500, 3150, 4000
5	Rated short-time withstand current (4s)			kA	16, 20, 25, 31.5, 40, 50
6	Rated withstands current (peak)			kA	40, 50, 63, 80, 100, 25
7	Rated short-circuit breaking current			kA	16, 20, 25, 31.5, 40, 50
8	Rated short-circuit closing current (peak)			kA	40, 50, 63, 80, 100, 25
9	Rated insulation level	1 min power frequency withstands voltage	between poles, pole to earth	kV	24, 32, 42
		1 min power frequency withstands voltage	between open contacts	kV	24, 32, 48
		Lightening impulse withstands voltage (peak)	between poles, pole to earth	kV	40, 60, 75
		Lightening impulse withstands voltage (peak)	between open contacts	kV	46, 70, 85
10	Protection level				Shell: IP4X; IP2X when the CPT and CB doors are open

Note:
1. The short circuit capacity of the current transformer should be separately considered.
2. See technical parameters of ZN63A-12 in related catalogues of our company.

VS1-12 Technical data

Item	Unit	Value
Contact distance	mm	12
Contact travel		75
Average closing speed (6mm~contact closed)	m/s	42
Average opening speed (contact separation -6mm)		20	25	31.5		40
Opening time (rated voltage)	m/s	630		630, 1250, 1600, 2000, 2500, 3150		1250, 1600, 2000, 2500, 3150, 4000
Closing time (rated voltage)		1250
Contact closing bounce time	m/s	20	25	31.5		40
Three phase opening asynchrony		63		80		100
Allowable cumulative thickness of wear for moving and stationary contacts	mm	50	63	80		100
Rated short-circuit breaking current breaking times	Times	80		50		30
Secondary circuit power frequency withstand current	V	2000
Rated operating sequence		Opening -0.3s - closing and opening -180s - closing and opening -180s - closing and opening -180s - closing and opening (40kA
Rated thermal stability time	S	4
Rated single/back to back capacitor bank breaking current	A	630/400			800/400
Mechanical life	Times	20000			10000

Structure

Overall and mounting dimensions (refer to picture 2, sheet 2 ) (mm) Sheet 2

Shape	Description	Size（mm）
Width (W)	Rated current of branch bus ≤1250A， heat stable current≤40KA	800(650)
Width (W)	Rated current of branch bus ≥1600A	1000
Depth (C)	Cable Incoming and outgoing feeder	1500
Depth (C)	Overheaded incoming and outgoing feeder	1660
Height (B)		2300(2200)