Product Details
Outstanding Features
SPG series is 3 phase, SF6 gas insulated load break switch (LBS) for overhead lines operating at a voltage up to 38kV. It meets the demand for oil-less and maintenance free operation with SF6 gas, related parts and devices installed inside its hermetically sealed stainless steel tank.
SCADA-mate configuration, or 3 current transformers and 6 resistive voltage sensors are integrated inside of the tank
World first resistive voltage sensors with an accuracy of below 0.5%, while traditional sensor has 3% accuracy
SF6 Gas Insulation and Interruption media is enclosed in stainless steel tank sealed and maintenance free with less than 0.2% leakage rate per year
Normal insulation and interruption performance even at an atmospheric gas pressure
Unique and field proven puffer and heavy duty tulip-Shaped contacts made of arc resistant Cu-W tip ensures short arc-extinguishing time: less than 0.5 cycles
There is no plastic material between open contacts, so SF6 gas makes no deterioration combined with arc and leakage current in the tank.
Insulation coordination enables outside flash-over
Safety bursting membrane releases over-pressure gas safely from the enclosed tank at pressure of 4-6kgf/cm2G
Easy check of the on/off position of the main contacts by ON/OFF position Indicator directly connected with the main shaft from the ground level
Specifications
Description
SPG-15
SPG -27
SPG-38
Rated Maximum Voltage
17.5kV
27kV
38
Rated Continuous Current
400 (630)
400 (630)
400 (630)
Rated Impulse Withstand Voltage (BIL)
125kV
150kV
195kV
Rated Short Time Withstand Current (rms)
20kA(4sec)
12.5kA(1sec)
12.5kA(1sec)
Cable Charging Current (rms, sym.)
20A
20A
20A
Transformer Magnetizing Current Current (rms)
14A (21 A)
14A( 21A)
14A( 21A)
Line Charging Current
2A
2A
2A
Electrical Operations
400 times
400 times
400 times
Mechanical Operations
5,000 times
5,000 times
5,000 times
Weight without Mounting Frame
180Kg
200Kg
250Kg
