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  • FN7-12DR AC High Voltage Load Break Switch
  • FN7-12DR AC High Voltage Load Break Switch

FN7-12DR AC High Voltage Load Break Switch

Description:

FN7-12DR model AC and HV indoor load break switch applies to three- phase power supply system of rated voltage 12kV and AC 50/60Hz. It used to switch on and off load-breaking current and short-circuit current.

  • Product Description

Summary

FN7-12DR model AC and HV indoor load break switch applies to three-

phase power supply system of rated voltage 12kV and AC 50/60Hz. It used to switch on and off load-breaking

current and short-circuit current.

Ambient condition

1. Altitude: 1000m;

2. Ambient temperature: -25~+40;

3. Relative humidity: daily average 95, monthly average 90;

4. Earthquake intensity: 8 degree;

5. Applicable occasions should free from inflammables, explosives, corrosives and severe vibration.

Type Model DS DX L R RA F
Earthing switch at input terminal Earthing switch at output terminal Interlock device Fuse Impact release Power closing device
No release FN7-10
FN7-10DSL
FN7-10DXL
FN7-10R
FN7-10DSLR
FN7-10DXLR
With impact release FN7-10RAF
FN7-10DSLRAF
FN710DXLRAF e e

Note: (-)without (△)with

Rated voltage (KV) 11
Max voltage (kV) 12
Rated current (A) 400/630
1min P.F withstand voltage (kV) 42/48 42/48
4s thermal stable current (virtual)(kA) 12.5/20
Dynamic stable current (peak)(kA) 31.5/50
Short circuit making current (kA) 31.5/50
Rated breaking current (A) 400/630
Rated transfer current (A) 1000/1000

Diagram 1 “Wire” load break switch without release

Diagram 2 “transformer protection” load break switch without release

Diagram 3 Release impact load break switch

Diagram 4 CS6 Operating mechanism mounting drawing

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