LW3F series 15KV27KV38KV SF6 Load Break Switch
Model Series
LBS
Rated Voltage
2.5～34.5kV
Standard
IEC 62271-1
Warranty
Two years
Application
Outdoor/Indoor
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 temperature: +40 ; Minimum temperature:-20.
- Humidity: Monthly average humidity 95%; Daily average humidity 90%.
- Altitude above sea level: Maximum installation altitude: 2500m.
- Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
- 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 is a automatic management unit for single way/multi ways/ring network /two power sourcing, provided with all voltage and current signals and all functions.
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, and can access other station premises equipment (such as TTU, FTU, DTU, etc.).
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
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 and no data will loss even the power is off.
1.6 Records
●Trip logs
●SOE logs
●Alarm Logs
1.7 Communication
●RS485, RS232 port and Ethernet
●Protocols -IEC60870-5-101, IEC60870-5-104
IEC61850 or Modbus RTU,DNP3.0
1.8 HMI Software
Dimensions
15KV SF6 LOAD BREAK SWITCH
36KV SF6 LOAD BREAK SWITCH
Installation
Technical Data
| No | Item | Unit | Data | |
| 1 | Rated voltage | kV | 12-20-33 | |
| 2 | Rated current | Hz | 50/60 | |
| 3 | Rated insulation level (with SF6 gas 0.07Mpa) | lightning impulse voltage | kV | 75/125/170 |
| Power frequency impulse voltage | kV | 42/50/70 | ||
| 5 | Rated current | A | 630 | |
| 6 | Rated open circuit load current (0.07Mpa//20℃ /h) | A | 630 | |
| 7 | Open circuit current under 0 pressure | A | 630 | |
| 8 | Rate peak value withstand current | kA | 50 | |
| 9 | Rated short-time closing current | kA | 50 | |
| 10 | Rated short-time withstand current | kA/s | 45677 | |
| 11 | Rated electric cable charge open circuit current | A | 25 | |
| 12 | Rated wire charge open circuit current | A | 16 | |
| 13 | Rated closed loop open circuit current | A | 630 | |
| 14 | Excitation current | A | 21 | |
| 15 | Rated current open circuit times | 400 times | ||
| 16 | Rated working pressure | MPa | 0.07 | |
| 17 | Each operating voltage and resistance | 150 | ||
| 18 | Gas relative leakage rate | year | 0.01 | |
| 19 | SF6 gas moisture content | Leave factory relative figure | ppm | 150 |
| Switch working figure | ppm | 300 | ||
| 20 | Machine stable operation | times | 6000 | |
| 21 | Rated operating voltage and assistant loop rated voltage | V | DC220;110 | |
| AC220;110 | ||||
| 22 | Weight | M type | kg | 115 |
| A type | 135 | |||
