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12kV Outdoor Boundary Switch

12kV Outdoor Boundary Switch

Mostly purpose FZW20A-12 type outdoor high-voltage boundary switch(hereinafter called breaker for short )is a three-phase 50HZ outdoor power distribution equipment with rated voltage of 12KV.Mainly used for breaking and closing of load current,overload current and short-circuit current,zero......

Mostly purpose
FZW20A-12 type outdoor high-voltage boundary switch(hereinafter called breaker for short )is a three-phase 50HZ outdoor power distribution equipment with rated voltage of 12KV.Mainly used for breaking and closing of load current,overload current and short-circuit current,zero sequence current in electric power system,it is applied for protection and control of power distribution system in substation and industrial and mining enterpreise,especially for rural power network and places requiring frequent operation.This product is equipped with controller,for its control mechod:(1)FDR-01 palm computer,(2)FDR-02(GSM type),with single-phase earthing and short circuit protection functions,which meets the requirement of power distribution automatization,and can finish the owrk of traditional recolser reliably and effectively.
This installation and operation instruction contains contents of main technical parameter of circuit breaker,product structure,principle and method of installation,operation and maintenance,etc.

Normal working environment
1.Ambient Air Terperature:-40 ℃

Mostly purpose
FZW20A-12 type outdoor high-voltage boundary switch(hereinafter called breaker for short )is a three-phase 50HZ outdoor power distribution equipment with rated voltage of 12KV.Mainly used for breaking and closing of load current,overload current and short-circuit current,zero sequence current in electric power system,it is applied for protection and control of power distribution system in substation and industrial and mining enterpreise,especially for rural power network and places requiring frequent operation.This product is equipped with controller,for its control mechod:(1)FDR-01 palm computer,(2)FDR-02(GSM type),with single-phase earthing and short circuit protection functions,which meets the requirement of power distribution automatization,and can finish the owrk of traditional recolser reliably and effectively.
This installation and operation instruction contains contents of main technical parameter of circuit breaker,product structure,principle and method of installation,operation and maintenance,etc. 


Normal working environment
1.Ambient Air Terperature:-40 ℃~+40℃; daily temperature difference:25 ℃
2.Altitude:≤3000m;
3.Wind speed:≤35m/s;
4.The place where it is used is free from fire,explosion,chemical corrosion and intense vibration.

Technic Parameter
1.Technic Parameter(Table 1)

Item

Unit

Parameter

Rated voltage

KV

12

Rated frequency

HZ

50

Rated current

A

630、1000

Rated short circuit breaking current

KA

12.5、16、20、25

Rated peak value withstand current

KA

31.5、40、50、63

Rated chort time withstan current(4S)(Peak value)

KA

12.5、16、20、25

Rated short current switching current(Peak value)

KA

31.5、40、50、63

Mechanism life

Times

10000

Breaking current frequency under rated short circuit

Times

10000

Breaking current frequency under rated short circuit

Times

30

Power frequency withstand voltage(1min)interphase,to earth/fracture

KV

42/49

Lightning impulse withstand voltage(peak valu)interphase,to  earth/fracture

KV

75/85

1 min power frequency withstand voltage of secondary circuit

KV

2


2. Mechanical Character Parameter

ITEM

UNIT

PARAMETER

contact opening

MM

8.5~10

contact overtravel

MM

2.5~4

switch off speed

M/S

1.2±0.2

switch on speed

M/S

0.6±0.2

contact closing bounce time

S

≤2

interphase center distance

MM

INNER:135±1.5,OUTER:275±2

external charged air insulation distance

MM

240±2

external creepage ratio

MM/KV

38

three-phase switching on-synchroneity

MS

≤2

loop resistance

цΩ

< 120

switch-on time

MS

≤45

switch-off time

MS

≤45

rated power of energy storage motor

W

≯40

rated voltage of energy storage motor

V

AC220

rated switching-on operating voltage

V

AC220

max./min.switching-on operating voltage

V

AC246/143

rated switching-off operating voltage

V

AC220

max./min.switching-off operating voltage

V

AC246/143

max./min.motor voltage

V

AC242/176


The operating power supply of this product adopts the low voltage power supply  with AC220V(110)offered by user or directly adopts the secondary voltage with AC220V(110)  which is output bu aerial line through voltage transformer(outer).It also could  be built-in current transformer for self-over-current protection and the  standard configuration is two sets.

Structure Character
1. Structue
The circult breaker composes of main body box with high-voltage system and  operating components inside, operating mechanism box and hanger frame offering  installation,fixation and moving(lifting),please see drawing 1for outline  structure and installing size and drawing 2for inner structure.

2. Character
1)The vacuum arc-extinguishing circuit breaker has reliable breaking  performance, it owns damp-proof and explosion safelysmall volume light weight  and long service life.
2)The circult breaker adopts totally enclosed structure, with good sealing  performance,it owns damp-proof and condensation resistant performance,so that  is suitable for area with high remperature and high moisture.
3) Three-phase CT could be installed in the circult breaker,and the output  three-phase current is offered to the intelligent controller for information  analysis ,the transformation ratio of CT could be adjusted by connecting the  terminal to corresponding terminal pedestal.
4)the switching on or off of circuit breaker could be operated manually or  electrically with over-current prorection.
5)the operating mechanism is novol simple reliable and small,its mechanical  life can reach 10000 times.
6)the whole operating mechanism composes of switching on spring energy storage system,over-current tripper,switching on/off coil manual on/off system,auxiliary switch and energy storage indeication part,etc.
7)the circlt breaker could be either suspended on crossbeam by hanger or  installed with sitting posture.

Externlity &Build in Dimension
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