FN7-12 Series Indoor High Voltage Air Load Break Switch

High quality customized products FN7-12 Series Indoor High Voltage Air Load Break Switch from China suppliers and manufacturers, XUCKY Electric have FN7-12DR type indoor AC off-voltage load break switch is applicable to AC 50Hz, rated voltage 12KV in the three-phase AC power system as a load current breaking and closing short-circuit current use, the combination of electrical appliances can open any current up to short-circuit current, can be used as protection.

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Product Description

Application

FN7-12 is a new type of air indoor high-voltage load break switch. It is suitable for AC 50Hz, rated voltage 12KV three-phase AC power system, as the breaking load current and closing short-circuit current.

Type Description of FN7-12 Series Indoor High Voltage Air Load Break Switch

FN7-12 Series Indoor High Voltage Air Load Break Switch

Working Conditions

● Ambient temperature: -25 °C~ 40°C;

● Altitude: <1000m;

● Relative humidity: daily average <95%; Monthly average <90%;

● There shall be no corrosive, combustion and explosion gas or vapor on the site;

● No frequent violent vibration.

Technical Parameters of FN7-12 Series Indoor High Voltage Air Load Break Switch

Main specifications Note: (-) without (A) with Table 1

Name	Type	Model	DS	DX	L	R	RA	F
			Earth switch at inlet	Earth switch at outlet	Interlock device	Fuse	Striker fuse	Electric opening device
Load break switch	Without tripper	FN7-12	-	-	-	-	-	-
		FN7-12DSL	A	-	A	-	-	-
		FN7-12DXL	-	A	A	-	-	-
		FN7-12R	-	-	-	A	-	-
		FN7-12DSLR	A	-	A	A	-	-
		FN7-12DXLR	-	A	A	A	-	-
	With striking tripper	FN7-12RA	-	-	-	-	A	-
		FN7-12RAF	-	-	-	-	A	A
		FN7-12DXLRA	-	A	A	-	A	-
		FN7-12DXLRAF	-	A	A	-	A	A

Rated parameters Table 2

Rated voltage kV	Max. voltage kV	Rated current A	1min power frequency withstand voltage kV	4s thermal stability current(RMS) kA	Dynamic stability current(peak) kA	Short circuit making current kA	Rated breaking current A	Rated transferring current A
12	12	400	42/48	12.5	31.5	31.5	400	1000
12	12	630	42/48	20	50	50	630	1000

Rated parameters of fUse Table 3

Model	Rated voltage kV	Rated current A	Rated current of fuse
SDLA*J	12	40	6,3,10,16,20,25,31.5,40
SFLA*J	12	100	50,63,71,80,100
SKLA*J	12	125	125

A*: with striker.

General Structure Drawing and Installation Size ( unit mm )

Drawing 1 FN7-12 load switch outline and installation size

1. Arc Extinguishing Knife 2. Arc Contact Part and Arc Extinguishing Chamber 3. Insulator 4. Base 5. Dynamic Contact Knife 6. Static Contact Knife 7. Spring energy storage device (inside the main axis sleeve) 8. Main knife turning arm

FN7-12 Series Indoor High Voltage Air Load Break Switch

Drawing 2 FN7-12DXL load switch outline and installation size

1.Arc Extinguishing Knife 2.Arc Contact Part and Arc Extinguishing Chamber 3. Insulator 4. Base 5. Dynamic Contact Knife 6. Static Contact Knife 7. Spring energy storage device (inside the main axis sleeve) 8. Earthing Knife 9. Main knife closing turning arm 10. Earthing knife closing turning arm

FN7-12 Series Indoor High Voltage Air Load Break Switch

Drawing 3 FN7-12DXLR separated type load switch outline and installation size

1.Arc Extinguishing Knife 2.Arc Contact Part and Arc Extinguishing Chamber 3. Insulator 4. Earthing knife 5. Base 6. Dynamic Contact Knife 7* Static Contact Knife 8. Fuse 9* Spring energy storage device (inside the main axis sleeve) 10. Earthing energy-storage spring 11. Interlock device 12. Main knife closing&opeing turning arm 13. Earthing knife closing&opening turning arm

FN7-12 Series Indoor High Voltage Air Load Break Switch

Drawing 4 FN7-12R separated type load switch outline and installation size

1.Arc Extinguishing Knife 2.Arc Contact Part and Arc Extinguishing Chamber 3. Insulator 4. Base 5. Dynamic Contact Knife 6. Static Contact Knife 7. Spring energy storage device (inside the main axis sleeve) 8. Fuse 9. Main knife closing&opening turning arm

FN7-12 Series Indoor High Voltage Air Load Break Switch

Drawing 5 FN7-12DXLRA integrated type load switch outline and installation size

1 .Arc Extinguishing Knife 2.Arc Contact Part and Arc Extinguishing Chamber 3. Impact type Fuse 4. Insulator Base 5. Earthing knife 6. Base 7. Dynamic Contact Knife 8. Main knife closing spring 9. Static Contact Knife 10. Earthing energy-storage spring 11. Main knife opening spring 12. Interlock device 13. Main knife closing&opeing turning arm m 14.Earthing knife closing&opening turning arm

FN7-12 Series Indoor High Voltage Air Load Break Switch

Drawing 6 FN7-12C load switch outline and installation size

1.Arc Extinguishing Knife 2. Arc Contact Part and Arc Extinguishing Chamber 3. Insulator 4. Base 5. Dynamic Contact Knife 6. Static Contact Knife 7. Spring energy storage device (inside the main axis sleeve) 8. Plate

FN7-12 Series Indoor High Voltage Air Load Break Switch

Drawing 7 FN7-12CR separated type load switch outline and installation size

1.Arc Extinguishing Knife 2. Arc Contact Part and Arc Extinguishing Chamber 3. Insulator 4. Base 5. Dynamic Contact Knife 6. Static Contact Knife 7. Spring energy storage device (inside the main axis sleeve) 8. Fuse 9. Plate

FN7-12 Series Indoor High Voltage Air Load Break Switch

Drawing 8 FN7-12CDXLRA integrated type load switch outline and installation size

1.Arc Extinguishing Knife 2. Arc Contact Part and Arc Extinguishing Chamber 3. Impact type fuse 4. Earthling knife 5. Insulator 6. Base 7. Main knife closing spring 8. Dynamic Contact Knife 9. Static Contact Knife 10.Earthing energy storage spring 11. Main knife opening spring 12.Plate 13. Drawing 11

FN7-12 Series Indoor High Voltage Air Load Break Switch