LBS 24KV 630a SF6 Gas Load Break Switch

24kV SF6 load break switch is a switch equipment for medium voltage switchgear, using SF6 gas as arc extinguishing and insulating medium. Rate voltage was 24kV, rate current was630A
LBS 24KV 630a SF6 Gas Load Break Switch Application

The SF6 LBS 24kv 630A gas-insulated switch is a three-phase interoperable switching device designed for use in distribution system cabling and overhead power line segment applications.

The 24KV pole mounted disconnect switch can be operated manually in the field or remotely from the control center.

LBS 24KV 630a SF6 Gas Load Break Switch Technical Parameters
Products Type FWX-24
Basic Ratings
Maximum System Voltage 24kV
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 50kV
DryCondition-1min，Ph- Ph, Phase to Earth 64kV
Dry Condition - 1 min Across Interrupter 79kV
Impulse Withstand Current Test( 1.2 x 50 ³´µs )
Phase to Phase, Phase to Earth 125kV
Across Interrupter 145kV
Other Ratings & Specifications
Internal Arc Test 20kA /0.1 sec
Arc Extinction Medium SF6 Gas
Insulation Medium SF6 Gas
Creepage Distance (Porcelain) 700mm
Creepage Distance (Silicon) 1200mm
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 LBS load break 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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