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FN5-12 Series Indoor High Voltage Air Load Break Switch
  • FN5-12 Series Indoor High Voltage Air Load Break SwitchFN5-12 Series Indoor High Voltage Air Load Break Switch
  • FN5-12 Series Indoor High Voltage Air Load Break SwitchFN5-12 Series Indoor High Voltage Air Load Break Switch

FN5-12 Series Indoor High Voltage Air Load Break Switch

Support customized mass production FN5-12 series indoor high voltage air load break switch (Hereinafter referred to as load break switch) applies to AC 50Hz 12kV network, for breaking load current and closing short circuit current. Load break switch with fuse can cut off short circuit current for switch protection. The load break switch can be used with CS6-1 type manual operating mechanism, and this product special uses CS manual operating mechanism.

Application

FN5-12 series indoor high voltage air load break switch (Hereinafter referred to as load break switch) applies to AC 50Hz 12kV network, for breaking load current and closing short circuit current. Load break switch with fuse can cut off short circuit current for switch protection.

The load break switch can be used with CS6-1 type manual operating mechanism, and this product special uses CS 口 manual operating mechanism.


Type and Meaning

FN5-12 Series Indoor High Voltage Air Load Break Switch


Use environment

a. Altitude < 1000m;

b. Ambient air teirr mFre: -25~+40°C, (motorized operating mechanism〉-5°C);

c. Relative humidity: daily average <95%, monthly average < 90% (+25 °C);

d. Ambient air without obvious pollution, like corrosive or flammable gas, water vapor, etc.

e. Wihtout requent strong vibration.


Technical data of FN5-12 Series Indoor High Voltage Air Load Break Switch

4.1 Load break switch technical parameters table 1

Name

Unit

Value

Rated voltage

kV

12

Maximum working voltage

kV

12

Rated frequency

Hz

5。

Rated current

A

400 630

Rated short time withstand current (thermal stability current)

kA/S

12.5/4 20/2

Rated peak withstand current (dynamic stability current)

kA

31.5 50

Rated closed loop breaking current

A

400 630

Rated power loading breaking current

A.

400 630

5% rated power loading breaking current

A

20 31.5

Rated cable charging breaking current

A

10

Rated no load transformer breaking current


1250kVA no-load

current of transformer

Rated short circuit closing current

kA

31.5 50

Load current breaking times

Load/times

100%/20 30%/75

60%/35 5%/80

1min power frequency w; nstana voltage (RMS), phase-to-phase / isoktmg fracture

kV

42/48

Power frequency v^tnstand voltage between isolating fractures

kV

53

Lightning impulse withstand voltage to ground(peak), phase-to-phase/isolating fracture

kV

75/85

Opening/closing operating torque

Nm(N)

90(80) 100(200)

Note: FN5-12D grounded part of the load switch with short-circuit making current capacity.


4.2 Fuse technical parameter table2

Model

Rated voltage KV

Fuse

Rated current

A

Rated breaking current KA

Rated current of fuse-element

RN3

12

50

12.5

2, 3, 5, 7.5, 12, 15,20,30, 40, 50

75

75

100

100

200

150 200

SDL*J

12

40

50

6.3, 10, 16, 20, 25,31.5,40

SFL*J

12

100

50, 63, 71, 80, 100

SKL*J

12

126

125


Appearance and Installation Dimensions (mm)

Fig. 1 FN5-12

FN5-12 Series Indoor High Voltage Air Load Break Switch

1. Framework 2. Post insulator 3. Bearing wiring board 4. Blade
5. Arc extinguisher 6. Torsional spring and its pin bearing 7. Guide bar 8. Wiring board
9. Lever 10. Load switch moving bearing 11. Spring charging mechanism 12. Operating mechanism


Fig. 2 FN5-12D

FN5-12 Series Indoor High Voltage Air Load Break Switch

1. Framework 2. Earth blad 3. 7 ,rth switch moving bearing 4. Post insulator
5. Earth moving bearing 6. Beaming wiring board 7. Blade 8. Arc extinguisher
9. Draw spring and + spring’s pin bearing 10. Guide bar 11. Wiring board 12. Lever
13.Load switch bearing 14. Load switch spring charging mechanism 15. Earth swl、h ^ring charging mechanism 16. Load switch operating mechanism
17. Er rth vi ch operating mechanism 18. Interlock mechanism


Fig. 3 FN5-12R(S)

FN5-12 Series Indoor High Voltage Air Load Break Switch

1. FN5-12R load sv 2. Bering fuse wiring board 3. Fuse link 4. Fuse wiring board 5. Fuse base


Fig. 4 FN5-12DR

FN5-12 Series Indoor High Voltage Air Load Break Switch

1. FN5-12D load s'icn 2. Bering fuse wiring board 3. Fuse 4. Fuse wiring board 5. Fuse base

Mechanism modelCS6-1

csn

L Fuse model

H

h

SDL*J、SFL*J、SKL*J

935

530

735 RN3-10

<75

990

585

5=75

1040

635


Fig. 5 FN5-12R(S)a

FN5-12 Series Indoor High Voltage Air Load Break Switch

1. FN5-12 load swi、c:i 2. Bering, se wiring board 3. Fuse 4. Fuse wiring board 5. Fuse base


Fig. 6 FN5-12DR(S)

FN5-12 Series Indoor High Voltage Air Load Break Switch

1. FN5-12D switch 2. Bering fuse wiring board 3. Fuse
4. Fuse wiring board 5. Fus 6. Interlock mechanism


Fig. 7 FN5-12R(D)L

FN5-12 Series Indoor High Voltage Air Load Break Switch

1. Under frame 2. Insulator 3. Fuse 4. Tripper device
5. Moving contact 6. Arc extinguisher 7. Guide bar 8. Static contact
9. Opening/closing mechanism 10. Interlock device 11. Load switch operating mechanism 12. Earth switch



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