FN5-12(24)Series

Indoor load Break switch

12kV 24kV

FN5-12(24)

Description

FN5-12(24)Series

The FN5-12(24) Indoor AC M.V. load switch and fuse combination is designed by ourselves, combined with the requirement of our country and based on the advanced foreign technique. It has been tested for long term by full aspects and confirmed to IEC62271 “AC M.V. load switch-fuse combinations” and GB3804 “3-63kV AC M.V. load break switch” standard. Compared to the same products of overseas, It has come up to the technique parameter level. For its small size and light weight, it can be used in RMU and compact substations, also widely used for the power distribution of the 12kV and 24kV line and has the perfect function of open phase protection. And break on-load current, over-load current and short circuit current. This Load Break Switch can apply with CS6-I manual operating mechanism. The development of the FN5-12(24) realized the functions of three-position switch: ON/OFF, isolation and grounding.

Specifications

FN5-12(24)Series

Technical Specification

   

Rated voltage

kV

12

24

Rated current

A

630

630

Rated power frequency

Hz

50/60

50/60

Short circuit making capacity

kA Peak.

63

63

Peak withstand current

kA Peak.

63

63

Short time current

kA eff.

  

1Sec.

 

25

25

3Sec.

 

14

14

Max. breaking capacity in co-operation with fuses IEC 62271-105 (IEC 420 1990-11)

A

1600

900

Max. fuse current(XRNT Fuse)

A

200

200

Power frequency withstand voltage 50Hz 1 min,:

   

– To earth and between poles

kV

42

55

– Across isolating distance

kV

48

70

Impulse withstand voltage 1.2/50μ s:

   

– To earth and between poles

kV

75

125

– Across isolating distance

kV

85

145

Mechanism Endurance

cycles

1000

2000

 

Drawing

FN5-12(24)Series

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