33KV SF6 Gas Load Break Switch
These load break switch 33kv are intended for outdoor applications. They can be mounted either horizontally or vertically, and are suitable for electrical operation and power distribution by power distribution cabinet. These 33kv load break switch are tested by our quality controllers on various parameters before delivering them to our valued customer ends. We manufacture these switches with the help of cutting edge technology, which allows us to deliver a flawless product that is sure to be flawless as well. The 33 kV live parts are not directly touchable and hence guarantee protection from hazards.
33kv Load Break Switch Application
The 33kv pole mounted switch is made of a proven rugged, corrosion-resistant material (304L stainless steel plate for warships), ensuring a long service life (30 years) and a range of operations, with the characteristics ideal for on-column equipment.
33kv Load Break SwitchTechnical Parameters
Products Type FWX-36
Basic Ratings
Maximum System Voltage 36kV
Rated Continuous Current 630A
Rated Frequency 50/60Hz
Short Time Withstand Current 16kA/1sec
Making and Breaking Capacity
Mainly Active Load Current 630A
Number of Load-break Operations 400times
Short-circuit Making Current (peak) 40kA
Number of Making Operations 5 times
Cable Charging Current 25A
Line Charging Current 1.5A
Closed Loop Circuit Current 630A
Transformer Magnetizing Current 22A
Power Frequency Withstand Current Test
Wet Condition-10sec Ph- Ph-Eth, Across Interrupters 70kV
DryCondition-1min，Ph- Ph, Phase to Earth 95kV
Dry Condition - 1 min Across Interrupter 110kV
Impulse Withstand Current Test( 1.2 x 50 µs )
Phase to Phase, Phase to Earth 195kV
Across Interrupter 215kV
Other Ratings & Specifications
Internal Arc Test 20kA /0.1 sec
Arc Extinction Medium SF6 Gas
Insulation Medium SF6 Gas
Creepage Distance (Porcelain) 1055mm
Creepage Distance (Silicon) 1550mm
Dry arcing distance ≥
IP Level 65
Operation Performance
Closing/Opening Time ＜1sec
Mechanical Operations (Guaranteed) 10000times
Operating Temperature (*Manual Type) -25～+70℃
Gas Pressure
Nominal Pressure (MPa, at 20°C) 0.07
Bursting Pressure (MPa) 0.4～0.6
Minimum Gas Pressure (MPa) 0.05
Leakage Rate (cc/ sec) ≤0.5%
Voltage sensors
CT ABC 10P10 5VA 400:05:00
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 33KVload break interrupter switch.
No additional adjustment circuit can be added to the controller. The voltage signal of the 33kv load break switch into the test line needs to be tested separately.
Gopower is a professional electric power equipment ltd, we provide auto recloser, load break switch and etc. For more information, please feel free to contact us!
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