There are many switchgear products around us, which can be classified in detail according to the different areas of use and functional design. Today, we are organizing a tap changer that is widely used in coil equipment and connections, which can be switched between transformers without interrupting the load current, thus changing the specifics of the use, and realizing the effect of voltage regulation. In addition to this, there is a wide range of tap changers available on the market, which can be consulted before purchasing.
I. Role of the on-load tap-changer
The on-load tap-changer of a power transformer is used to regulate the output voltage of the transformer. As the voltage is not exactly the same everywhere in the power system grid, in order to make the transformer output the rated voltage no matter where it is installed in the grid, the high voltage winding of the transformer is set up with multiple taps and the taps are connected to the on-load tap-changer, which is connected to the grid through the on-load tap-changer. In this way, it is possible to change the turns ratio of the transformer's high-voltage and low-voltage windings by connecting the tap changer to different transformer winding taps, thus achieving the purpose of regulating the output voltage of the transformer.
Tap changer has two kinds of no-load and on-load adjustment, the former can only be adjusted after the transformer is disconnected from the grid, while the latter can be adjusted in the transformer operating conditions of the tap changer position.
General distribution transformer, if there is no special requirements, are used without load regulation tap changer, regulating gear for ± 5% of the rated voltage, capacity is slightly larger can be ± 2X2.5%. And the use of on-load tap changer, there can be ±5X1.25%, ±7X1.0% and so on many combinations
Two, tap changer price
1, Price: ?50.00
Transformer special WSP disk-type non-excited tap changer? Shift switch
Manufacturer: Wuqiang County Jinergy Power Equipment Factory
2, Price: ?55.00
Tap changer Hebei manufacturers spot direct sale? Variety full
Manufacturer: Wuqiang County General Transformer Accessories Co.
3, Price: ?45.00
Supply tap changer with reliable quality
Manufacturer: Wuqiang County Linxing Transformer Accessories Co.
Above price is for reference only
Three, tap changer manufacturers recommended
2, Changzhou Guohai Electric Co. Is a research and development, design, production and sales as one of the dry type on-load tap-changer specialized enterprises, the company undertakes a variety of switch upgrading and after-sales maintenance works. The company is located in Changzhou City, Jiangsu Province, which is known as the manufacturing capital in the center of the Yangtze River Delta.
3, Wuhan Huaneng Sunshine Electric Co., Ltd. is located in Wuhan Qiaokou District, Gutian five road 17, the company is mainly engaged in instrumentation, substation power test equipment and substation line testing equipment development, production, sales, technology and after-sales service, the company's main products are voltage tester, high-voltage test transformer, resonance transformer, series resonant transformer, resonance transformer, megohmmeter, direct High hair, grounding resistance, oil dielectric loss tester, dielectric strength of insulating oil tester, etc.
As a special representative of the switching products, the tap changer is mainly used in the coil equipment, can be realized without cutting off the current under the circumstances of the conversion of the voltage, so as to facilitate the operation of our late, in addition to qualified tap changer should be in the early stage of in-depth understanding of the acquisition of the recommended information, including tap In addition to this, a qualified on-load tap-changer should also have an in-depth understanding of the information recommended for acquisition in advance, including comparisons between the on-load tap-changer and other products, as well as examples of manufacturers and prices, including those mentioned above, which are extremely informative. This means that the actual choice of a specific size of on-load tap-changer can be used to achieve satisfactory results at a later stage.
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