AC contactor is an electrical device commonly used to control circuits. Its main function is to control the switching circuit by controlling the on and off of the electromagnetic coil.When selecting an AC contactor, you usually need to consider the coil voltage. Common coil voltages are 220V and 380
The whistling sound of the transformer is mainly due to the low-frequency oscillation contained in the excitation component of the transformer, which causes the magnetic molecules in the core to move under this low-frequency magnetic field, generating mechanical vibration, thereby causing vibration
Compared with AC overhead lines, there is no significant difference in the design and calculation of mechanical structure between DC overhead lines and AC overhead lines. But on the electrical side, there are many different characteristics that require specialized research. For the construction of U
1. The principle of magnetic saturationTransformer is an indispensable device in the power system. Its main function is to transmit and convert electrical energy between different voltage levels. The core of the transformer is a core made of ferromagnetic material, and its working principle is based
Compared with ultra-high voltage DC at the ±600 kV level and below, the main technical and economic advantages of UHV DC transmission can be summarized in the following six aspects:1. Large conveying capacity. Using 4000 ampere thyristor valves, the ±800 kV DC UHV transmission capacity can reach 6
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