15KV/27KV/38KV SF6 Load Break Switch - Reliable China Suppliers & Factory Solutions for Outdoor/Indoor Use
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
a) Air temperature:
Maximum temperature: +40℃; Minimum temperature: -20℃.
b) Humidity:
Monthly average humidity 95%; Daily average humidity 90%.
c) Altitude above sea level:
Maximum installation altitude: 2500m.
d) Ambient air:
Not apparently polluted by corrosive and flammable gas, vapor etc.
e) Vibration:
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 gives us a safety power grid for cutting line fault and automatic recovery operation and power automation.
The controller is gathering with line protection, control, measurement and monitoring of voltage and current signals integrated automation and control devices outdoors.
The controller column switch intelligent controller supports: Wireless (GSM/GPRS/CDMA), Ethernet mode, WIFI, optical fiber, power line carrier, RS232/485, RJ45 and other forms of communication.
| 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 |
● 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 |
● Protection configuration is complete, and all protection functions can be switched on and off flexibly.
● 13 channels digital signal input.
● 4 channels current measure.
● 6 channels voltage measure.
● Large capacity flash memory (100+ historical events).
● Logs: Trip, SOE, Alarm logs.
● Ports: RS485, RS232, Ethernet.
● Protocols: IEC60870-5-101/104, IEC61850, Modbus RTU, DNP3.0.
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 switch?
The LW3F series is available for 12kV, 24kV, and 33kV rated voltage systems with a rated current of 400A or 630A.
What is the difference between LW3F-A and LW3F-M models?
LW3F-A is a manual type load break switch, while LW3F-M is an intelligent type that can be equipped with an advanced controller for automated operation.
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 the switch operate in extreme temperature conditions?
Yes, the switch characters allow for an ambient temperature range of -40℃ to +80℃, making it suitable for diverse climates.
Is the LW3F switch suitable for high-altitude installations?
Yes, it is designed to operate reliably at a maximum installation altitude of up to 2500m above sea level.
What protection functions are integrated into the controller?
The controller includes phase overcurrent (50P), overload (49), ground overcurrent (50G/N), recloser (79), undervoltage (27), and overvoltage protections.