LW3F Series 15KV/27KV/38KV SF6 Load Break Switch - High Voltage Solutions from China Suppliers and Factory
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.
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
● Phase current IA, IB, IC RMS, Zero Sequency
● Voltage Uab, Ubc, Uca, U0
● Active power, reactive power and power factor
● Frequency
● Voltage Uab, Ubc, Uca, U0
● Active power, reactive power and power factor
● Frequency
1.4 Control and monitoring
| Switch control | 94 |
| Lockout Relay | 86 |
1.5 Features
● 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 can record at least 100 times of historical events.
● 13 channels digital signal input.
● 4 channels current measure.
● 6 channels voltage measure.
● Large capacity flash memory can record at least 100 times of historical events.
1.6 Records & 1.7 Communication
● Trip, SOE, and Alarm logs.
● RS485, RS232 port and Ethernet.
● Protocols: IEC60870-5-101/104, IEC61850, Modbus RTU, DNP3.0.
● RS485, RS232 port and Ethernet.
● Protocols: IEC60870-5-101/104, IEC61850, 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
FAQ
What voltage ratings is the LW3F load break switch suitable for?
The LW3F type pole-mounted SF6 load break switch 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?
The LW3F-A is a manually operated load break switch, while the LW3F-M is an intelligent type that can automatically disconnect during distribution line failures.
What are the environmental operating limits for this switch?
It can operate in ambient temperatures ranging from -40℃ to +80℃, at altitudes up to 2500m, and in humidity levels up to 95% monthly average.
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 via RS485, RS232, or Ethernet.
How many operations is the LW3F switch guaranteed for?
The switch is guaranteed for 4000 operations, ensuring high reliability and an enhanced life expectancy.
Can the controller record fault events?
Yes, the large capacity flash memory can record at least 100 historical events, including trip logs, SOE logs, and alarm logs, without data loss during power outages.