Vacuum circuit breaker
"Vacuum circuit breaker" is named after its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and no need for maintenance of arc extinguishing. The application in the power grid is more popular. The vacuum circuit breaker is an indoor power distribution device in a 3~10kV, 50Hz three-phase AC system. It can be used as the protection and control of electrical equipment in industrial and mining enterprises, power plants, and substations. For maintenance and frequent operation places, circuit breakers can be configured in middle cabinets, double-layer cabinets and fixed cabinets to control and protect high-voltage electrical equipment.
Digital meter A meter that displays the measured value digitally. An instrument that converts measurements into digital quantities and displays them in digital form. In industrial measurement, the measured variable or analog quantity such as displacement, current, voltage, air pressure, etc., are converted into digital quantity through the analog-to-digital converter (referred to as analog-to-digital conversion).
Multimeters are also called multiplex meters, multimeters, three-meters, multi-meters, etc. They are indispensable measuring instruments in power electronics and other sectors. They generally measure voltage, current, and resistance as their main purpose.
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