2024-3-29
A device that uses the zero-sequence current generated when grounding is used to initiate protection is called zero-sequence current protection. Special zero-sequence current transformers are used on cable lines to achieve grounding protection.
2024-3-28
Generally used protection methods for transformers. The abnormal working conditions of transformers mainly include overload, overcurrent caused by external short circuit, neutral point overvoltage caused by external ground short circuit, oil level reduction caused by oil......
2024-3-27
Although overload protection and overcurrent protection of circuit breakers are both designed to protect circuits and equipment, they have significant differences in fault types, causes, protection methods, and sensitivities.
2024-3-20
If the sound is loud and noisy, it may be a problem with the transformer core. For example, when the clamp or the screw holding down the iron core is loose, the indication of the instrument is generally normal, and the color, temperature and oil level of the insulating oil......
2024-3-13
Low-voltage circuit breakers are electrical appliances used to control and protect low-voltage circuits. They are mainly used to protect circuits from overloads, short circuits and other faults. A fuse is an electrical device that uses a fuse chip in a circuit to provide o......
2024-2-29
Electrical insulators are a very important component in power systems such as substations and distribution and transmission lines. In-depth research and practical knowledge on the subject is Required for electrical professionals in the power field.