GW4-12 series light torque maintenance type outdoor high-voltage disconnector is an outdoor high waist electrical equipment with a frequency of 50Hz-60Hz. It is used to replace the connection under the condition of high-voltage no load, and electrically isolate the overhauled high-voltage bus, circuit breaker and other electrical equipment from the live high-voltage line. It can also be used to open and close very small capacitive current and inductive current.
According to the use area: ordinary type, pollution attached type and plateau type.
With or without earthing switch.
This series of disconnectors meet the requirements specified in gb1989-89 AC high voltage disconnectors, iec1129 (1984), AC disconnector grounding switches and iec694 (1980) common terms for high voltage switchgear and control equipment. This series of products have good seismic resistance and meet the requirements of 9 degrees of earthquake (horizontal acceleration 4.9m/s2 and vertical acceleration 2.45m/s2).
For more information about GW4-12 disconnector, please contact us.
|Parameter name||Unit||Parameter value|
|Maximum operating voltage||kV||12|
|2S thermal stability current KA (effective value)||kA||6.3||12.5||20||31.5|
|Dynamic stability current KA (effective value)||kA||16||31.5||50||80|
|Rated lightning impulse withstand voltage||Relatively||kV||105|
|Rated 1min power frequency withstand voltage||Relatively||kV||40|
|Rated longitudinal mechanical load of terminal||N||245|
|Matching mechanism||CJ6, CJ11M-G maintenance free electric operating mechanism or CS11-1, CS11, CS8-6D manual mechanism|
1. The disconnector is of double column horizontal rotary structure
Each pole is composed of three independent monopoles, and each monopole is composed of base, insulating pillar and conductive part. Each insulating pole and right connecting rod can be fixed on two insulating bases with 90 ° rotating angle, and each insulating pole and right connecting rod can be connected respectively. The left and right contacts are in contact between the two insulating pillars through the conductive plate. The structural type, base, post insulator and other components of products with different current specifications are the same, but the conductive circuit is slightly different.
2. Structure of grounding switch
The static contact of the grounding switch is fixed on the conductive pipe of the disconnector, and the moving contact is installed on the end of the grounding knife steel pipe on the base.
3. Structure of manual mechanism
The manual mechanism is divided into CS11-1, CS11 and CS8-6D. Its operating handle rotates horizontally with a rotation angle of 90 °. CS8-6D is equipped with interlocking device to ensure the operation according to the specified procedure (main opening - ground closing - ground opening - Main closing).
4. Mechanical interlocking of disconnector and grounding switch
The mechanical interlocking of disconnector and grounding switch is partially realized through the interlocking panel on CS8-6D manual mechanism.
5. Structure of electric mechanism
For the structure of CJ6 electric operating mechanism or cj11m-g surface maintenance electric mechanism, see its installation and operation manual.
Safety protection // Corrosion resistance // Outdoor rainproof // Long life // Excellent material
The operating mechanism of the disconnector is connected with the driving stage of the disconnector through the connecting pipe. The main shaft of the mechanism rotates by 90 °, driving the insulating pillar of the driving stage to rotate by 90 °, and the connecting rod in the base drives the insulating pillar on the other side to rotate in the opposite direction to realize the opening and closing action. The driving stage drives the other two driven poles to rotate through the inter pole linkage pipe, so as to maintain the three-phase synchronous action. The auxiliary switch in the mechanism is connected with the main output shaft of the mechanism and sends the corresponding opening and closing signal in the opening and closing position.
The main shaft of the three-phase grounding switch is connected with the horizontal connecting pipe through the joint, the handle of the operating mechanism rotates horizontally by 90 °, and the horizontal connecting pipe is driven to rotate through the connecting rod to realize the opening and closing action of the grounding switch.
The operating mechanism is connected with the main shaft of the disconnector and grounding switch through the connecting pipe. The CJ8-6D manual mechanism is equipped with the disconnector with grounding knife, and its output interlocking board ensures the operation according to the specified procedure (main opening - ground closing - ground opening - Main closing).
The use of inferior disconnector will lead to porcelain bottle fracture fault and overheating of conductive circuit. During operation, the spring will be compressed for a long time due to static contact finger compression.
If the working current is large and the temperature rise exceeds the allowable value, its elasticity will deteriorate and a vicious circle will eventually cause burning loss and endanger life safety!
Hydropower station #1
Factory and mining enterprises #2
Ring network power supply #3
Petrochemical Enterprises #4
01.Exquisite material safety protection ......./03
02.Silver Plated Red Copper isolating knife switch ......./03
03.High performance and long life ......./03
1. Altitude: 1000-3000m;
2. The ambient temperature is not higher than + 40 ℃ and not lower than - 30 ℃ (not lower than - 40 ℃ in alpine areas);
3. The wind pressure shall not exceed 700pa (equivalent to the wind speed of 34m / s);
4. The seismic intensity shall not exceed 8 degrees;
5.The icing thickness shall not be greater than 10mm;
6. The installation site shall be free of inflammable and explosive dangerous goods, chemical corrosion and violent vibration;
7. Pollution grade of post insulator: ordinary type grade 0 and anti pollution type grade II.
Lawrence Electric Co., Ltd. is a high-tech enterprise focusing on power transmission and distribution products, providing customers with one-stop service of power transmission and distribution products.
It mainly produces and sells lightning arrester, insulator, fuse, isolation / load switch, SF6 / vacuum circuit breaker, power supply fittings, optical cable fittings, switch cabinet and other transmission and distribution products. The company has production bases and sales centers in Jiangxi, Zhejiang, Uganda, Tanzania and other places.
Our products have operated safely in the power supply systems of more than 20 countries and regions around the world for more than 10 years. They are also qualified suppliers of China State Grid and China Southern Power Grid. At present, they have gained a good reputation in the field of power system in the world.
We have received high-quality product recommendation letters from power supply companies in Kenya, Uganda, Tanzania, Zambia, Guinea, Ghana, Togo, Mozambique, Nepal, Guyana, Myanmar and other countries and regions.
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