PGS-12~40.5kV Pole-Mounted Load Break Switch: A High-Performance Solution

The PGS-12~40.5 pole-mounted insulation load switch is designed to operate in power grids with rated voltages of 12~ 40.5kV. It can handle rated currents of 400A and 630A at 50/60Hz, being capable of opening and closing circuit, load, and overload currents. This switch can automatically isolate faulty distribution lines.

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Description

The PGS-12~40.5 pole-mounted insulation load switch is designed to operate in power grids with rated voltages of 12~ 40.5kV. It can handle rated currents of 400A and 630A at 50/60Hz, being capable of opening and closing circuit, load, and overload currents. This switch can automatically isolate faulty distribution lines.
Equipped with the latest technology, it features a new electronic controller. It offers multiple operation modes including manual, electric, and remote operation. The electronic controller is housed in a stainless steel cabinet, enabling it to function under various climatic conditions. Wired and wireless modems are installed in the cabinet, facilitating remote monitoring and control. Its simple pole-mounted installation is convenient and fast, reducing construction costs.

 Standard Conditions of Use

  • Ambient Temperature: The ambient air temperature ranges from -40°C to +50°C, and the relative humidity can reach 100%.
  • Elevation: It can operate at elevations not exceeding 1000m, 2000m, or 3000m.
  • Pressure: It can withstand a pressure not exceeding 700Pa (equivalent to a wind speed of 34m/s).
  • Earthquake Intensity: Up to 8 degrees.
  • Installation Site: The site should be free of fire, explosion hazards, chemical corrosion, and severe recurrent vibrations.
  • Pollution Class: Class III or IV.

 Key Features

  • SF6 Gas-Insulated: SF6 gas, which is non-toxic, non-flammable, and has excellent electrical insulation and arc extinction properties, is used for insulation.
  • Diverse Drivepipe Options: Besides the standard ceramic drivepipe, alternatives like rubber insulators used in epoxy resin filling equipment are available.
  • Visible Open/Closed Status: The color-coded main contact position indicator (Green – off; red – closed) is easily visible from the ground. It is directly linked to the main contacts of the drive shaft assembly for accurate contact state display.
  • Quick Operation: The spring energy-operated mechanism enables rapid closing and opening operations (less than 100 milliseconds).
  • Remote Control Capability: The electronic controller allows for both in situ and FTU interface console operation, enabling remote control.
  • Rugged and Durable: Constructed from durable, corrosion-resistant 304L stainless steel plate (used in warships), it offers a long service life (30 years) and is suitable for pole-mounted applications.
  • Standard Compliance: Each switch is filled with SF6 gas, sealed, and tested according to IEC60265-1 (1988) and GB3804-1990 standards before leaving the factory.

Parameters ratings

No. Name Unit Data
Product mode PGS-11 PGS-24 PGS-38
1 Rated voltage kV 11 24 38
6/10/11 15/17.5/20 33/36/38
2 Rated frequency Hz 50/60 50/60 50/60
3 Rated insulation level(The filling SF6 gas 0.07Mpa / 20 ° C) (Lightning impulse withstand voltage) relatively kV 75 125 185
Fracture 85 145 215
Power frequency withstand voltage 1min relatively kV 42 64 95
Fracture 50 79 110
4 Insulation level of zero gauge pressure. Power frequency withstand voltage 1min kV 30
RP-pressure 1min 30
The highest phase voltage 5min 9
5 Rated current A 630(400) 630(400) 630(400)
6 Rated breaking load current (0.07Mpa / 20 ° C) A 630(400) 630(400) 630(400)
7 breaking current under zero gauge pressure A 630(400) 630(400) 630(400)
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 line charging breaking current A 16 16 16
14 rated closed-loop breaking current A 630(400) 630(400) 630(400)
15 exciting current A 21 21 21
16 rated current breaking times Times ≥400 ≥400 ≥400
17 rated working pressure Mpa 0.07 0.07 0.25
18 Per-phase main circuit resistance μΩ ≤150 ≤150 ≤150
19 relative gas leakage rate year ≤1% ≤1% ≤1%
20 SF6 gas moisture content Factory transfer of value ppm ≤150 ≤150 ≤150
Switch running value ppm ≤300 ≤300 ≤300
21 operation of echanical stability times 6000 6000 6000
22 rated operating voltage and auxiliary circuits rated voltage 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 institutions boxes and controller protection class IP44 IP54
25 Type of Mounting The lifting type (suspended)/block (horizontal)

 

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