An isolation switch is a type of switchgear without an arc extinguishing device, mainly used to disconnect circuits without load current, isolate power sources, and have obvious disconnection points in the opening state to ensure the safe maintenance of other electrical equipment It can reliably pass through normal load current and short-circuit fault current when in the closed state. Because it does not have a dedicated arc extinguishing device, it cannot cut off load current and short-circuit current. Therefore, the isolation switch can only be operated when the circuit has been disconnected by the circuit breaker, and it is strictly prohibited to operate under load to avoid serious equipment and personal accidents Only voltage transformers, lightning arresters, no-load transformers with excitation current not exceeding 2A, and no-load lines with current not exceeding 5A can be directly operated with isolation switches
Function of testing report:
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1. Telephone communication and confirmation of requirements
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1. The testing industry is fully covered, meeting different testing needs
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