LW3F Series 15KV/27KV/38KV SF6 Load Break Switch - Quality China Suppliers & Factory for Reliable Power 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: Manually LBS for choice.
LW3F-M type: 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: Max +40℃; Min -20℃.
Humidity: Monthly avg 95%; Daily avg 90%.
Altitude: Maximum installation altitude 2500m.
Environment: Ambient air not polluted by corrosive/flammable gas.
Stability: 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 can combined with load break switch for achieve of measure monitoring, fault analysis and event records. It supports Wireless (GSM/GPRS/CDMA), Ethernet mode, WIFI, optical fiber, and more.
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 |
| 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/reactive power and power factor
Switch control (94) & Lockout Relay (86)
1.5 Features & 1.7 Communication
13 channels digital signal input
6 channels voltage measure
RS485, RS232 port and Ethernet
Protocols: IEC60870-5-101/104, Modbus RTU, DNP3.0
1.8 HMI Software
Dimensions
15KV SF6 LOAD BREAK SWITCH
24KV SF6 LOAD BREAK SWITCH
36KV SF6 LOAD BREAK SWITCH
Installation
Frequently Asked Questions
What is the rated voltage range for the LW3F load break switch?
The LW3F series is designed for rated voltages of 12kV, 24kV, and 33kV.
What is the difference between LW3F-A and LW3F-M models?
The LW3F-A is a manually operated load break switch, while the LW3F-M is an intelligent type equipped with an advanced controller for automated operations.
What communication protocols does the intelligent controller support?
The controller supports multiple protocols including IEC60870-5-101, IEC60870-5-104, IEC61850, Modbus RTU, and DNP3.0.
Can this switch operate in extreme weather conditions?
Yes, it is designed for ambient temperatures ranging from -40℃ to +80℃ and is housed in a stainless steel cabinet for durability in various environments.
What is the mechanical life expectancy of the switch?
The product is guaranteed for 4000 operations, ensuring a reliable and enhanced life expectancy for distribution lines.
What protection functions are integrated into the controller?
It includes phase overcurrent (50P), overload (49), ground overcurrent (50G/N), recloser (79), and undervoltage (27) protections among others.