10KV low resistance earthing transformer complete set cabinet
Description: Shanghai EK Electric specializes in Neutral point gap protection, Neutral grounding resistor cabinet, Petersen coil, Over-voltage protection, Grounding cable boxes and High-low-voltage electrical transmission and distribution equipment. All the products are widely used in electric power, metallurgy, petrochemical, wind power, photovoltaic, construction and other industries. Our company received raise from the customers and complete equipment factories for the good product quality, the full set technical support services and complete pre-sale and after sale system. 10KV low resistance earthing transformer complete set cabinet is specific to the power plant generator neutral point which use the high resistance earthing complete set equipment. There may happened that the Arc grounding overvoltage and insulation easily damaged as the generator pressure in the weak level when the generator loop occurs the single earthing, the current value is greater than a predetermined value. It will result in generating core burns and sintering if the ground current is too large. Usually the generator neutral point use high resistance earthing to limit the Arc earthing voltage, to reduce the core burns, to produce the sensitivity of the relay protection at the same time. Its action is to limit the voltage between phases in 2.6 times and to limit the arc restrike, to prevent the damaging the main equipments when over voltage in arc gap at the same time, to ensure security when the generator is operating. The features of products 1. This product is made of stainless steel nickel-chromium alloy (Cr20Ni80) or non-metallic (carbon valves, zinc oxide valve) material. With high conductivity, high temperature coefficient, can resistant the temperature more than 1600℃, corrosion resistant, good toughness without distortion, good stability. 2. The earthing transformer in cabinet is the dry type transformer which has the high capacity and impact resistant. 3. Generator Neutral Grounding resistance cabinet is for indoor use. The cabinet body is made of cold rolled steel (spraying) or stainless steel . 4. There has space in the cabinet to add earthing recording device and temperature and humidity control device. The conditions for products 1. Generally for indoor. Please specify when ordering if you want the outdoor type. 2. Altitude no more than 4000m. Please specify the product used in the high altitude plateau when ordering, 3. Environment temperature: -20℃~+70℃, relative humidity less than 95%. 4. Surrounding the environment there is non flammable, non-corrosive gases and conductive dust. 5. Used for 48~52 Hz(50 Hz system),58~62 Hz(60 Hz system)
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