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FZW28-12F/630 HV AC vacuum load switch
Column Switch Series
FZW28-12F/630 HV AC vacuum load switch is widely used in the user inlet break of responsibility of urban and rural AC 50Hz, 10kV three-phase distribution system and is also applicable for qualified branch T connection point.
FZW28-12F/630 HV AC vacuum load switch is widely used in the user inlet break of responsibility of urban and rural AC 50Hz, 10kV three-phase distribution system and is also applicable for qualified branch T connection point. This user boundary switch applies currently advanced computer control technology and has line fault quick search, fault point quick isolation and intelligent SMS alarm functions, making it a preferred product for distribution network automation and robust intelligent grid. This product meets relevant technical standards including IEC60694, GB/T11022-2011 and GB3804-2004.

S/N

Item

Unit

Parameters

1

Rated voltage

kV

12

2

Rated frequency 

Hz

50/60

3

Rated current

A

630

4

Rated short-time withstand current

kA

20

5

Rated peak withstand current

kA

50

6

Rated duration of short-circuit

s

4

7

Rated short-circuit open current 

kA

20

8

Rated short-circuit closing current (peak)

kA

50

9

Rated operation sequence

O-0.3s-CO-180s-CO

10

Rated active load breaking current

A

630

11

Power frequency voltage (1min) (phase-to-ground, phase-to-phase and phase-to-fracture)

kV

42/48

12

Lightening impulse withstand voltage (phase-to-ground, phase-to-phase and phase-to-fracture)

kV

75/85

13

Rated cable-charging breaking current

A

10

14

Mechanical life

Time

10000

15

Clearance between open contacts

mm

8±1

16

Over-travel of the contact

mm

2.5~4

17

Contact closing bounce time

ms

≤10

18

Three-phase closing/opening non-synchronism

ms

≤3

19

Sulfur hexafluoride gas rated pressure

MPa

“0”

20

Enclosure protection class

IP67

1. This product adopts unique inlet-outlet line mode in which silicone rubber sleeve is connected to HV cable, showing excellent external insulation.
 
2. Mature sealing structure technology is adopted, ensuring reliable sealing performance.
 
3. Load switch main loop and secondary components and mechanisms are sealed in SF6 gas and are not affected by external environment, showing maintenaince-free property.
 
4. Vacuum arc extinguishing, SF6 gas external insulation, asynchronous linkage between built-in isolation knife and arc extinction chamber, good opening/closing ability, high safety.