• FN7- 12R(L) model indoor AC HV load break switch
  • FN7- 12R(L) model indoor AC HV load break switch
  • FN7- 12R(L) model indoor AC HV load break switch
  • FN7- 12R(L) model indoor AC HV load break switch

FN7- 12R load break switch

FN7- 12R(L) model indoor AC HV load break switch-fuse combination apparatus is developed and designed based on international technology and national power supply requirement, it passed all type tests and trial-operation inspections.

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Product Description

FN7- 12R(L) model indoor load break switch

Product Description

FN7- 12R(L) model indoor AC HV load break switch-fuse combination apparatus is developed and designed based on international technology and national power supply requirement, it passed all type tests and trial-operation inspections. The apparatus conforms to IEC420: AC LOAD BREAK SWITCH AND  FUSE COMBINATION APPARATUS(1990 EDITION) Compared to international product it keeps up with technical level with small volume and light weight. It is applicable in ring main unit and prefabricated substations as well as 12kv line and power distribution system. The product realizes three working positions: power making. power breaking and earth. It applies to power system of rated voltage 6- 12kv, 50/60HZ breaking load current over load current and short-circuit current.

Environment condition

1. The altitude: under 1000M.

2. The ambient temperature: -25-+40.

3. The relative humidity of air: monthly≤90%, daily≤95%.

4. Amplitude: Earthquake degree 8.

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

Technical parameter

Rated voltage   KV

1min frequency   Voltage KV

Rated Current A

4S thermal   current A

Dynamic current   (peak)KA

Rated breaking   current A

Short circuit   close current KA

12

42

400

12.5

31.5

400

31.5

48

630

20

50

630

50

 

 

 

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