15KV/27KV/38KV SF6 Load Break Switch - Reliable China Suppliers & Factory Solutions
LW3F type pole-mounted SF6 load break switch was used in 12kV, 24kV, 33kV rated voltage, rated current 400/630A; 50/60HZ with the load current; over load current of power line open circuit and opening and closing electric systems.
General
- The switch can equipped with a controller with most advanced technical parameter.
- LW3F-A type LW3F is manually LBS for choice.
- LW3F-M type LW3F is a intelligent type LBS for choice.
- It can automatically disconnect when the distribution line was break down.
- It could operated by handle; Implement electrification and distant. The electric controller was installed in stainless steel cabinet. So it could use in any conditions.
Service Condition
| Air Temperature | Maximum: +40℃; Minimum: -20℃ |
| Humidity | Monthly average: 95%; Daily average: 90% |
| Altitude | Maximum installation altitude: 2500m |
| Environment | Ambient air not apparently polluted by corrosive/flammable gas, vapor etc. |
| Mechanical | No frequent violent shake. |
Product Structure
Product Characters:
- High quality porcelain or Rubber bushing
- Full comply with IEC std
- Guarantee 4000 times operations
- Environment friendly
- Suitable for both Pole mounted or Hanging mounted
- Reliable and Enhanced Life Expectancy
- Ambient Temp: -40℃ ~ +80℃
| ① Operation Handle | ② ON/OFF Indication | ③ Installation Bracket |
| ④ Operating Mechanism | ⑤ Interrupter | ⑥ Hanging Lug |
| ⑦ Cable Bushing |
Controller
1.1 Description
Volt logic series line sectional load break controller is medium voltage overhead line grid monitoring unit. It combined with load break switch for achieve of measure monitoring, fault analysis and event records.
1.2 Protection functions
| Protection functions | ANSI code | Name in Device |
|---|---|---|
| Phase overcurrent | 50P | P.OC |
| Overload | 49 | Overload |
| Phase Time-Overcurrent | 51P | P.Curve |
| Ground Overcurrent | 50G/N | E.F |
| Recloser | 79 | Reclose |
| Phase overcurrent cold load pick-up | CLPU50 | Cold Load |
| Switch-Onto-Fault | - | SOTF |
| Undervoltage | 27 | Under volt |
| Overvoltage | 50P | P.OC |
1.3 Metering & 1.4 Control
- Phase current IA, IB, IC RMS, Zero Sequency
- Voltage Uab, Ubc, Uca, U0
- Active power, reactive power and power factor
- Frequency
- Switch control (94) & Lockout Relay (86)
1.5 Features & 1.7 Communication
- 13 channels digital signal input; 4 channels current; 6 channels voltage measure.
- Large capacity flash memory: record at least 100 times historical events.
- Communication: RS485, RS232, Ethernet.
- Protocols: IEC60870-5-101/104, IEC61850, Modbus RTU, DNP3.0.
1.8 HMI Software Interface
Dimensions
15KV SF6 LOAD BREAK SWITCH
24KV SF6 LOAD BREAK SWITCH
36KV SF6 LOAD BREAK SWITCH
Installation
Frequently Asked Questions
What are the rated voltage options for the LW3F SF6 load break switch?
The LW3F series is designed for 12kV, 24kV, and 33kV rated voltage systems with a rated current of 400/630A.
What is the difference between LW3F-A and LW3F-M models?
LW3F-A is a manually operated Load Break Switch (LBS), while LW3F-M is an intelligent type LBS equipped with an automated controller for advanced monitoring and fault analysis.
What protection functions does the intelligent controller provide?
The controller supports various protection functions including Phase overcurrent (50P), Overload (49), Ground Overcurrent (50G/N), Recloser (79), Undervoltage (27), and Switch-Onto-Fault (SOTF).
What are the environmental requirements for installation?
The switch operates in temperatures between -20°C and +40°C, with a maximum altitude of 2500m. It is designed to withstand humidity up to 95% and is suitable for environments without corrosive gases.
Which communication protocols are supported by the LBS controller?
The controller supports multiple protocols including IEC60870-5-101, IEC60870-5-104, IEC61850, Modbus RTU, and DNP3.0 via RS485, RS232, or Ethernet ports.
How many operations is the LW3F series guaranteed for?
The LW3F SF6 load break switch is designed for high reliability and guarantees at least 4000 operations.