GN30-12/630A indoor high-voltage disconnector, 1250A rotary knife switch disconnector for ring main unit
Contact Info
- Xiangyang Industrial Zone, Liushi Town, Yueqing City,
- 李经理
- 15167417505
- 864640886@qq.com
The rotating contact knife type disconnector GN30-12 is an indoor high-voltage rotating disconnector, which is an indoor high-voltage electrical equipment adopting a rotating contact knife structure. It realizes circuit switching operations through the rotation of the contact knife. This product adopts a three-phase common base frame structure, with two sets of insulators and contacts arranged on the upper and lower planes. Its rated voltage is 12kV, AC frequency is 50Hz, and the rated current covers the range from 400A to 1250A. It can be matched with CS6-2 type, JSXGN-10 type manual or electric operating mechanisms, and is suitable for circuit switching operations under no-load conditions. It can be installed in cooperation with high-voltage switchgear, and can also operate independently.
This equipment adopts a compact design, with installation methods including floor-mounted type, wall-penetrating type and corresponding grounding type, and supports double grounding forms for dynamic and static contacts. The product complies with the GB1985-89 standard, and has technical parameters such as a thermal stability current of 12.5kA-31.5kA and a dynamic stability current of 31.5kA-80kA. Environmental adaptation conditions include an altitude ≤1000 meters, a temperature range of -10℃ to +40℃, and a daily average relative humidity ≤95%. It is suitable for indoor places without severe vibration and chemical corrosion. The GN30-12D type, as a derivative model, adds a grounding knife structure, further expanding the application scenarios.
The GN30 indoor high-voltage rotating disconnector is a new type of rotating contact knife disconnector. Its main structure is that two sets of insulators and contacts are fixed on the upper and lower planes of the three-phase common base, and the switching on and off of the disconnector is realized through the rotation of the contact knife. This disconnector adopts the JSXGN-12 type interlockable operating mechanism for transmission, and all insulating parts use large creepage distance porcelain insulators. The contacts use sheet-shaped contact fingers and linear contact, which reduces the operating force and increases the rotation flexibility. The GN30 indoor high-voltage rotating disconnector has a relatively compact structural design, small floor area, certain insulation capacity, and relatively simple installation and adjustment process. It is suitable for indoor power systems with a rated voltage of 12kV (and can also be used in 10kV systems) with AC 50Hz and below. It is used for closing circuits under voltage and no-load conditions, and can be used in conjunction with high-voltage switchgear or used alone. Its models include series such as GN30-12/400-12.5, GN30-12D/400-12.5, GN30-12/630-20, and GN30-12D/630-20. This disconnector is often used in box-type metal-enclosed fixed switchgear, which helps to realize the compact design of the switchgear structure. The GN30-12 indoor high-voltage rotating disconnector has a rated voltage of 12kV, AC frequency of 50Hz, and rated current covering ranges of 400A, 630A, 1000A, 1250A, 2000A, and 3150A. The thermal stability current includes 12.5kA, 20kA, 31.5kA, and 40kA, and the dynamic stability current ranges from 31.5kA to 80kA, with different parameters corresponding to different models.
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