Isolating switches may be unfamiliar to many friends. This kind of switch is mostly used in some industrial fields such as substations and power plants. It is also used in some power station construction sites, so it is also a very important switch.
1. A characteristic of this high-voltage isolation switch is that it has no arc extinguishing capability and can only perform opening and closing circuit processing when there is no load current operation. The high-voltage isolation switch can be used at all levels of voltage to change circuit connections and isolate line equipment from the power supply. However, it has no current-breaking effect. As long as other equipment is used to disconnect the line in advance before operation.
2. The high-voltage isolation switch is allowed to operate for a long time under the rated current and rated voltage during use, but the temperature of the connector with the conductor cannot exceed 70°C during operation. Generally, there is no special fire extinguisher installed at the high-voltage isolation switch. arc device.
3. The main function of the high-voltage isolation switch is to ensure that high-voltage electrical appliances and devices can be operated safely during maintenance and isolation, and it cannot be used to cut off current, input load current, or disconnect short-circuit current. It can only be used for some switching operations that do not produce strong arcs.
4. High-voltage isolation switches without arc extinguishing function can be divided into indoor type and outdoor type according to the installation location. According to the number of insulation pillars, they can be divided into single-pillar type, double-pillar type and three-pillar type. According to different voltage levels Make appropriate choices.