Load Break Switch

• Customization: Available
• Function: Industry
• Structure: Power Built-in Type
• Model NO.: FKN12-12
• Usage: Disconnector, Change-over Switch, Control Switch
• Contact Type: Type c Contact
• Detection Method: Retro-reflective Mode
• Pole: 3
• Rated Continuous Current: 60A
• Number of Switch: Multi Control Switch
• Brand: Cnhk
• Certification: ISO9001, CE, CCC
• Transport Package: Wooden Package
• Specification: 1005*848*820
• Trademark: CNHK
• Origin: China
• HS Code: 853710909
• Production Capacity: 1000

Product Description

FZ(R)N12-12D Indoor Vacuum Load Break Switch with Fuse
1.General
1.1Ratings: Rated voltage up to 12kV, Rated current up to 630A, AC50HZ 
1.2 Application: for the control and protection of substation and equipments; making and breaking short-circuit current under various operating status of electric network.
 1.3 Standard: IEC62271-105
2. Type and Interpretation:
2.1 Vacuum Load switch
FZ(R)N25-12D
FZ:Vacuum load switch
R;With limit current fuse
N:INDOOR
25:DESIGN NO.
12:RATED VOLTAGE
D: EARTHING SWITCH
3. Working Condition
3.1 Ambient air temperature: -25ºC~ +40ºC
3.2 Altitude: ≤1000m
3.3 No operating in such places as subject to dust, smog, corrosive/flammable gas, vapor and salt pollution.
3.4 Relative humidity: Daily average  95%
Monthly average   90%
3.5 Water vapor pressure: Daily average   
Monthly average  1.8kPa
3.6 The external shocking and earthquake from the switchgear and control equipment
 could be neglected.
3.7 The amplitude of electromagnetic interference in the secondary system 1.6kV
Note: Customized products for other special working conditions are available on your requirements.
4. Features:
Easy operation and installation
Connection combination is simple and convenient
  Insulation and sealed structure,
Reliable interlock, compact design
5. Operating mechanism
5.1 Manual Spring operation mechanism(Fig.1)
5.2 Electric Spring operation mechanism(Fig.2)
(Operation voltage: AC220V, DC220V)
6. Main Technical Parameter
 

Item		Unit	Data
			FZN12-12D/T630-20	FZN12-12D/T125-31.5
Rated voltage		kV	12
Rated frequency		Hz	50
Rated current		A	630		125
Rated insulation level	1min power frequency with stand voltage(Phase to earth, between poles, open contacts)	kV	42		48
	Rated lightning impulse withstand voltage(Phase to earth, between poles, open contacts)	kV	75		85
Rated peak withstanding current		kA	50
4S rated short-time withstanding current		kA /s	20		/
Earthing switch rated short-time withstanding current/Rated short-circuit duration time		kA/s	20/4		/
Rated breaking current	Power load breaking current	A	630		/
	Close loop breaking current	A	630		/
	Breaking cable charge current	A	31.5		/
	Breaking no-load transformer capacity	kVA	1250		1250
	Rated short-circuit breaking current	kA	/		31.5
	Breaking transfer current	A	/		3150
Fuse type			/		SDLAJ-12,SFLAJ-12
Shocking input energy		J	/		3-5
Rated short-circuit making current		kA	50		80(expected)
Earthing switch rated withstand current(peak)		kA	50		50
Earthing switch 4S rated short-time withstand current		kA	20		20
Auxiliary circuit rated voltage		V	220:110		220:110
Mechanical life(grade M2)		times	20000