Project Description

  • Pole Mounted SF6 Insulated Load Break Switch (LBS)
  • Pole Mounted SF6 Insulated Load Break Switch (LBS)
  • Pole Mounted SF6 Insulated Load Break Switch (LBS)
  • Pole Mounted SF6 Insulated Load Break Switch (LBS)
  • Pole Mounted SF6 Insulated Load Break Switch (LBS)
  • Pole Mounted SF6 Insulated Load Break Switch (LBS)
  • Pole Mounted SF6 Insulated Load Break Switch (LBS)
  • Pole Mounted SF6 Load Break Switch

Pole Mounted SF6 Insulated Load Break Switch (LBS)

Application environment:

The SF6 gas insulated load break switch (LBS) is suitable for applicable conditions:
2.1 Ambient temperature
2.1.1 Ambient air temperature: upper limit + 50 ℃, lower limit – 40 ℃.
2.1.2 Relative humidity: 100%

2.2 Altitude shall not exceed 3000m.
2.3 Wind pressure shall not exceed 700Pa (Equivalent to the wind speed of 34m / s).
2.4 Seismic intensity: 8 degrees.
2.5 Installation site: no fire, explosion hazard, chemical corrosion and frequent violent vibration.
2.6 Pollution level: Class III and IV.


Pole mounted SF6 insulated load breaker switch (LBS) is suitable for breaking and closing of the load current and overload current in 50/60Hz distribution network with rated voltage from 6 to 40.5kV and rated current of 630A, 1250A.
It can automatically isolate the fault distribution line section. The LBS is equipped with the latest electronic controller, which can be operated manually, electrically and remotely.
The electronic controller is installed in a stainless steel cabinet and can be used under various climatic conditions. In addition, wired and wireless modems can be installed in the control cabinet, which can realize remote monitoring and control.
The easy pole mounted installation and layout is convenient and fast mount which can reduce the construction cost.

Features:
1. SF6 gas insulated: SF6 is an electric insulating gas of non-poison and nonflammable, and have a good arc suppression feature.
2. Bushing: porcelain material or silicone rubber material.
3. Visible indication by opening and closing situation: Green for circuit open while Red for close.
4. Fast operation: It uses spring stored energy operation system, which makes fast switch on and switch off operation (less than 1 second).
5. Controller: With electronic controller, it could be operated on ground or by the main controller through RTU screen.
6. Solidity: The cabinet is made by stainless steel SUS 304, which offers life span of 30 years.
7. Standards: It will be filled of SF6 gas before delivery and factory acceptance test per IEC 60265; GB/T 3804.

Technical Parameters for Pole-Mounted SF6 Insulated Load Break Switch (LBS):

Sr No. Description Unit Data
1 Rated voltage KV 12 24 40.5
6/10/11 15/17.5/20 33/36/40.5
2 Rated frequency Hz 50/60 50/60 50/60
3 Rated insulation level

(Filled SF6 gas 0.07 MPa) / (at 20 ℃)

 Lightning impulse withstand voltage Among Phase, Phase to Ground KV 75 125 170(185)
Fracture 85 145 185(215)
Power frequency withstand voltage

1min

 Among Phase, Phase to Ground KV 42(45) 50(64) 70(90)
Fracture 50 60(79) 95(110)
4 Insulation level at zero-gauge pressure Power frequency withstand voltage for 1min KV 30
Reverse phases withstand voltage for 1min 30
Maximum phase voltage 5min 9
5 Rated current A 630 630 630
6 Rated breaking load current (0.05MPpa / at 20 ℃) A 630 630 630
7 Breaking current under zero-gauge voltage A 630 630 630
8 Peak withstand current KA 50 50 50
9 Rated short-time making current KA 50 50 50
11 Rated short-time withstand current KA/s 20/4 20/4 20/4
12 Rated cable charging breaking current A 25 25 25
13 Rated charging line breaking current A 16 16 16
14 Rated closed-loop breaking current A 630 630 630
15 Exciting current A 21 21 21
16 Rated current breaking times Times ≥400 ≥400 ≥400
17 Rated working pressure MPa 0.05 0.07 0.1
18 Main circuit resistance of each phase μΩ ≤150 ≤150 ≤150
19 Relative gas leakage rate Year ≤1% ≤1% ≤1%
20 Moisture content of SF6 gas Factory handover value ppm ≤150 ≤150 ≤150
LBS operating value ppm ≤300 ≤300 ≤300
21 Mechanical stability operation Times 6000 6000 6000
22 Rated operating voltage and rated voltage of auxiliary circuit V DC 220/

110/48/24

 DC 220/

110/48/24

 DC 220/

110/48/24
AC 220/110 AC 220/110 AC 220/110
23 Weight Type M kg 115 125 135
Type A 135 145 155
24 Protection level of mechanism cover and controller IP44, IP54
25 Type of mounting Lifting type (Suspended)/ Based (Horizontal)

Drawing:

Drawing of Load break Switch

Video will be updated soon.