15KV/27KV/38KV SF6 Load Break Switch - Reliable China Suppliers & Factory with IEC 62271-1 Standard
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) Shake: No frequent violent shake.
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) Shake: 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.
The controller supports: Wireless (GSM/GPRS/CDMA), Ethernet mode, WIFI, optical fiber, power line carrier, RS232/485, RJ45 and other forms of communication.
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 & Control
Phase current IA, IB, IC RMS, Zero Sequency
Voltage Uab, Ubc, Uca, U0
Active power, reactive power and power factor
Switch control (94) & Lockout Relay (86)
Dimensions
15KV SF6 LOAD BREAK SWITCH
24KV SF6 LOAD BREAK SWITCH
36KV SF6 LOAD BREAK SWITCH
Frequently Asked Questions
Q1: What is the rated voltage and current for the LW3F load break switch?
A: The LW3F switch is designed for 12kV, 24kV, and 33kV rated voltages with a rated current of 400A or 630A at 50/60Hz.
Q2: What are the differences between LW3F-A and LW3F-M types?
A: LW3F-A is a manually operated load break switch, while LW3F-M is an intelligent type equipped with an advanced controller for automatic fault disconnection.
Q3: What are the standard service conditions for installation?
A: It operates in temperatures from -20℃ to +40℃, with a maximum altitude of 2500m and monthly average humidity up to 95%.
Q4: How many operations can the LW3F switch handle?
A: The switch is guaranteed for up to 4000 mechanical operations, ensuring long-term reliability.
Q5: Which communication protocols does the intelligent controller support?
A: The controller supports multiple protocols including IEC60870-5-101, IEC60870-5-104, IEC61850, Modbus RTU, and DNP3.0.
Q6: Can the switch be used in harsh environmental conditions?
A: Yes, the electric controller is installed in a stainless steel cabinet, and the switch uses high-quality porcelain or rubber bushings, making it suitable for various outdoor conditions.