The main function of direct current in high-pressure chamber:
1. In order to supply power for the closing mechanism of high voltage switch, for example, the closing mechanism of electromagnetic type (CD) needs a large DC current, while the spring energy storage type (CT) closing mechanism does not need a large DC current, as long as the voltage can meet the normal work of the energy storage motor, in addition, it can also provide signal, control and alarm to the DC busbar on the top of the high voltage switch. DC power supply of equal circuit, relay protection and automatic devices provide DC power supply. DC power supply is used as operation power supply and signal display alarm to provide power for automatic or electric operation of large and complex high-low voltage (high-voltage and more commonly used) distribution system. It can also be integrated with the central signal screen design. (You can see the national and industry standards specifically).
2. Composition of DC screen: AC power supply, rectifier, charging (steady current and steady voltage) machine, battery group, DC distribution voltage level and battery number: 110V DC system needs 9 12V batteries, 220V DC system needs 18 12V batteries.
3. There are two kinds of simple DC operation power supply: one is HDP embedded distributed DC system, which consists of main engine and battery box. The battery only needs two 12V batteries; the other is an integrated HMP, UP5, DUP miniature DC operation power supply. The battery and main engine are composed of a box of chassis. Different electrical equipment can choose four different DC voltage 24V, 48V, 110V, 220V.
4. High-voltage switches refer to electrical products with voltage levels of 3.6V~550KV, which are used in power generation, transmission, distribution, power conversion and consumption. They mainly include high-voltage circuit breakers, high-voltage disconnectors and grounding switches, high-voltage load switches, high-voltage automatic reclosures and segmenters, high-voltage operating mechanisms, high-voltage riot-proof distribution devices and high-voltage switching. Closing cabinets, instrumentation devices, European box changes, American box changes and other major categories. For example, one night, an accident happened in a substation. A high-voltage switch was disconnected and the incoming electricity from the outside was disconnected. But we still hope to have electrical appliances to alarm and diagnose. Where do these instruments and control appliances come from? You have to rely on the DC screen, which has battery power supply.
5. DC screens are used in large, medium and small power plants and substations to provide DC power supply for high-voltage switches in normal operation and accident conditions, such as switching, relay protection, automatic control, accident lighting, etc. The reliability of DC screen is irreplaceable for other power supply devices. It can meet the high reliability requirements of power supply in substations and power plants. Transformer is a kind of electrical equipment used for energy conversion. It can convert one kind of AC power of voltage and current into another kind of AC power of the same frequency. Transformers are used in almost all electronic products. The principle is simple, but the winding process of transformers will have different requirements according to different applications. The main functions of transformers are: voltage conversion; impedance conversion; isolation; voltage stabilization (magnetically saturated transformer), etc. The core shapes commonly used in transformers are E and C cores.
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