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Sf6 Gas Insulated Load Break Switch For 25.8 kV (Underground Line)
• Multi-Circuit load break switch for 22.9 kV-Y underground or ground power lines Load break switch (auto or manual) :
- SF6 insulating gas applied (excellent arc extinguisher)
- Simple and easy control mechanism and three-grounding circuit inserted
- Applicable in isolating section and main distribution lines/branches
Features• Auto or manual
• Remotely-controllable and monitoring-enabled load break switch (auto)
• Brand-new arc extinguishing technology applied with improved load switch performance and no control malfunction
• Safety devices (electrical, mechanical low pressure interlock, operation monitor, pressure relief valve for high pressure gas, and lockout)
• Gas lockout for protection from internal short accidents
Rating (KEPCO standard)Item |
Rating |
Item |
Rating |
|
Rated voltage (kV) |
12/25.8/36 |
Impulse withstand voltage (kV) |
125(1.2×50㎲) |
|
Rated current (A) |
600 |
CONTROL | Rated voltage (V) |
AC 220V 60Hz |
Rated frequency (Hz) |
60 |
Power supply (V) |
DC 24V |
|
Rated breaking current (kA) |
12.5 (R.M.S), 1 sec |
Permeable voltage range |
85~110% |
|
Rated making vurrent (kA, peak) |
32.5 (Peak), 5 times |
Power frequency withstand voltage |
2,000V 1 min |
|
Input, opening time (sec) |
≤0.5 |
Impulse withstand voltage |
6kV, 3kA |
|
Power frequency withstand voltage (kV) | Dry: 60kV 1 min | Rated gas pressure | 0.5kg/㎠.G | |
Wet: 50kV 10 sec | ||||
- Specifications customizable upon customer’s request
Dimension & drawing | Load Break Switch |
Dimensions & weights |
Model |
Type |
Dimension (mm) |
Weight(㎏) |
|||
W |
D |
H |
||||
33–D–M–125, 600A×3 (3 electrical-circuit 3 switch) |
Auto |
1200 |
800 |
1300 |
350 |
|
| Manual | 1200 |
800 |
1200 |
300 |
||
44–D–A–125, 600A×4 (4 electrical-circuit 4 switch) |
Auto |
1600 |
800 |
1300 |
450 |
|
| Manual | 1600 |
800 |
1200 |
400 |
||
- KEPCO standard applied
- Specifications customizable upon customer’s request
Quality & performance certifications | Load Break Switch |
|
Performance Test Certificate by the Korea Electrotechnology Research Institute (KERI) (3 and 4 electrical circuits / Auto, Manual) | KEPCO Performance Certificate |
