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 33KV load 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!