What is a high-voltage combination switch, and what are its functions and classifications?
A high-voltage combination switch (also called a high-voltage combination electrical appliance, such as a switch cabinet) is a device in a power system that integrates multiple functions and is used for the control, protection and measurement of high-voltage power lines. It is usually composed of components such as circuit breakers, disconnectors, grounding switches, current transformers, voltage transformers, and lightning arresters, which are compactly installed in a cabinet to improve the system's operating reliability, save space, and simplify installation.
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