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Characteristics of 15KV SF6 Gas Load Breaker Switch

  • The switch is made of proven durable, corrosion-resistant material. (304L stainless steel plate for warships), ensure a long service life (30years), and can carry out a series of operations, with the pole top equipment ideal characteristics.


  • Each switch has been filled with sf6 gas before leaving the factory, sealed treatment. The test was carried out according to IEC60265-1 (1988) GB 3804-1990 standard.


Specification of 15KV SF6 Gas Load Breaker Switch


Products Type                    

FWX-15

Basic Ratings
Maximum System Voltage
15KV
Rated Continuous Current
630A
Rated Frequency
50/60Hz
Short Time Withstand Current
IKA/sec

Making and Breaking Capacity
Mainly Active LoadCurrent
630A
Number of Load-break Operations
400times
Short-circuit Making Current(peak)
50KA

Number of Making Operations

5 times

Cable Charging Current

lOA

Line Charging Current

lOA

Closed Loop Circuit Current

630A

Transformer Magnetizing Current

22A

Power Frequency Withstand Current Test

Wet Condition- 10 sec (Ph- Ph-Eth, Across Interrupters)

50KV

DryCondition- I min ( Phase to Phase, Phase to Earth)

50KV

Dry Condition - 1 min (Across Interrupter )

60KV

Impulse Withstand Current Test(1.2 x 50 µs)


Internal Arc Test

20kA /0.1 sec

Arc Extinction Medium

SF6 Gas

Insulation Medium

SF6 Gas

Creepage Distance (Porcelain)

560mm

IP Level

54

Operation Performance

Closing/Opening Tin记

< O. l sec

Mechanica l Operations (Guaranteed)

l OOOO times

Operating Temperature.1re(*Manual Type)

-25~+70℃


Gas Pressure

Nominal Pressure (kg/cm2 G, at 20°C)

0.07

Bursting Pressure (kg/cm2 G)

4 ~  6

Minimum Gas Pressure (kg/cm2 G)

0.0

Leakage  Rate (cc/ sec)

1%

Other Ratings & Specifications

Internal Arc Test

20kA /0.1 sec

20kA /0.1 sec

20kA /0.1 sec

Arc Extinction Medium

SF6 Gas

SF6 Gas

SF6 Gas

Insulation Medium

SF6 Gas

SF6 Gas

SF6 Gas

Creepage Distance (Porcelain)

380mm

700mm

1055mm

Creepage Distance (Silicon)

780mm

1200mm

1550mm

Dry arcing distance

≥200mm

IP Level

65

65

65

Operation Performance

Closing/Opening Time

<1sec

<1sec

<1sec

Mechanical Operations (Guaranteed)

10000times

10000times

10000times

Operating Temperature (*Manual Type)

-25~+70℃

-25~+70℃

-25~+70℃

Gas Pressure

Nominal Pressure (MPa, at 20°C)

0.07

0.07

0.07

Bursting Pressure (MPa)

0.4~0.6

0.4~0.6

0.4~0.6

Minimum Gas Pressure (MPa)

0.05

0.05

0.05

Leakage Rate (cc/ sec)

≤0.5%

≤0.5%

≤0.5%

Voltage sensors

CT ABC   10P10   5VA

400:5

400:5

400:5

Incoming side and outgoing side of the voltage sensor

6 Voltage sensor(built-in)                    Phase voltage:(24(36)kV/√3)/(3.25V/√3)


Special attention should be paid to the voltage sensor, which must be directly fed by the switch. No additional adjustment circuit can be added to the controller. The voltage signal of the switch into the test line needs to be tested separately.



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