The voltage transformer is an important component of the power distribution system. Whether the selection of the product is reasonable or not depends on the operation status of the entire power system. The selection of the voltage transformer is also a problem that our electric power practitioners must understand. The model of the voltage transformer The types are divided into many types, different models, and different types of voltage transformers. Their uses, installation methods, and structures are different. Let's take a closer look at the selection of voltage transformers.
First, when purchasing the transformer, first understand the main role of the voltage transformer. According to the purpose of classification, the voltage transformer can be divided into the protection voltage transformer and the voltage transformer for measurement, and the function of the protection voltage transformer. The high voltage is replaced by the secondary component of the power system (such as the microcomputer protection device and the intelligent control of the switch cabinet). The low voltage required for the device, instrumentation, etc., and the main function of the voltage transformer for measurement is to measure and measure the voltage state of the primary circuit high voltage and secondary circuit high voltage. Understand what the transformer used in the project is used for. If it is the former, choose the voltage transformer for protection. If it is the latter, select the voltage transformer for measurement.
Second, when selecting a voltage transformer, first understand whether the transformer is used indoors or outdoors. If it is used indoors, you must select the user's internal voltage transformer. Outdoors, you must choose an outdoor voltage transformer.
Third, when purchasing, the voltage level of the power distribution system of the project should be clarified. The general voltage transformers can be classified into four grades according to the voltage grade. One is a low-voltage transformer, and the low-voltage transformer is mainly at 1000V or below. Voltage level. The medium voltage transformer is mainly suitable for the power distribution system with rated voltage between 3KV and 110KV. The high voltage transformer is generally used for the voltage level of 220-500KV. For the above 500KV, the ultra high power transformer type must be selected. When selecting the product, our electric power practitioners must understand in which area the voltage level of our power distribution project is, and select the voltage transformer that meets the requirements according to the regulations.
Fourth, we must understand that the type of insulation and the type of insulation are the places we must pay attention to. If the choice is not correct, it will bring serious consequences to our power distribution system. Therefore, it must be clear that the voltage transformers are classified according to the insulation. Generally for two types, one is fully enclosed and the other is semi-closed. Although this is relatively simple, it must also be taken seriously.
Fifth, the type of media to be understood that the insulating product, the insulating medium voltage transformer can be divided by the dry-type voltage transformers, voltage transformers casting, oil voltage transformers, gas insulated voltage transformer, so in the selection Be sure to find out which of the electric transformers used in the project is which one. Don't make a mistake.
Sixth, we must understand the transformation principle of voltage transformers. Voltage transformers can be divided into two types: capacitive and electromagnetic. The electromagnetic voltage transformers convert high-voltage electricity into our secondary equipment. Low-voltage, and capacitive transformers are mainly to extract voltage from the capacitor, the two principles are not necessarily, before choosing the purchase, you must understand which one is more reliable for the entire power distribution system to purchase.
First, when purchasing the transformer, first understand the main role of the voltage transformer. According to the purpose of classification, the voltage transformer can be divided into the protection voltage transformer and the voltage transformer for measurement, and the function of the protection voltage transformer. The high voltage is replaced by the secondary component of the power system (such as the microcomputer protection device and the intelligent control of the switch cabinet). The low voltage required for the device, instrumentation, etc., and the main function of the voltage transformer for measurement is to measure and measure the voltage state of the primary circuit high voltage and secondary circuit high voltage. Understand what the transformer used in the project is used for. If it is the former, choose the voltage transformer for protection. If it is the latter, select the voltage transformer for measurement.
Second, when selecting a voltage transformer, first understand whether the transformer is used indoors or outdoors. If it is used indoors, you must select the user's internal voltage transformer. Outdoors, you must choose an outdoor voltage transformer.
Third, when purchasing, the voltage level of the power distribution system of the project should be clarified. The general voltage transformers can be classified into four grades according to the voltage grade. One is a low-voltage transformer, and the low-voltage transformer is mainly at 1000V or below. Voltage level. The medium voltage transformer is mainly suitable for the power distribution system with rated voltage between 3KV and 110KV. The high voltage transformer is generally used for the voltage level of 220-500KV. For the above 500KV, the ultra high power transformer type must be selected. When selecting the product, our electric power practitioners must understand in which area the voltage level of our power distribution project is, and select the voltage transformer that meets the requirements according to the regulations.
Fourth, we must understand that the type of insulation and the type of insulation are the places we must pay attention to. If the choice is not correct, it will bring serious consequences to our power distribution system. Therefore, it must be clear that the voltage transformers are classified according to the insulation. Generally for two types, one is fully enclosed and the other is semi-closed. Although this is relatively simple, it must also be taken seriously.
Fifth, the type of media to be understood that the insulating product, the insulating medium voltage transformer can be divided by the dry-type voltage transformers, voltage transformers casting, oil voltage transformers, gas insulated voltage transformer, so in the selection Be sure to find out which of the electric transformers used in the project is which one. Don't make a mistake.
Sixth, we must understand the transformation principle of voltage transformers. Voltage transformers can be divided into two types: capacitive and electromagnetic. The electromagnetic voltage transformers convert high-voltage electricity into our secondary equipment. Low-voltage, and capacitive transformers are mainly to extract voltage from the capacitor, the two principles are not necessarily, before choosing the purchase, you must understand which one is more reliable for the entire power distribution system to purchase.
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