The working principles of the leak switch explain the specific working mechanisms of the leak switch in its normal state of operation and when the equipment fails. In the absence of a power leak in the equipment, the addition of fireline l to the middle line n current is zero, but in the event of a leak, the value of the two is not equal and the current differential exceeds the specified value (usually 30ma) triggers a switch-off. It further elaborates on the differences in the performance of leaks in the terrestrial and wireless environments: where there is a ground line, the leaks allow some of the currents to flow through the equipment's shell to the ground, thus causing an instant response. Under landless conditions, however, although the shell is charged with electricity, no contact with a malfunctioning electrical device will cause the switch to jump until electrical contact has occurred, so that the jump can be achieved by diverting the body to the ground. Reference was also made to the hazards in high-altitude operations and to the response following the failure of the leak switch, noting that the absence of leak protection in the event of a circuit breaker could result in opening operating under a severe leak short circuit, which would be of little protection significance for minor leaks. The working principles of the leak switch, which can significantly reduce the risk by keeping the out-of-equipment voltage within a reasonable range, ultimately emphasize that the application of leak switches combined to the surface is an essential dual safeguard for ensuring the safety of people's lives and property, both in physical location and in electrical safety design。
The working principles of leak switches apply to all categories of persons involved in low-pressure electrical installation, maintenance or related industries. It is particularly suitable for use by electrician technicians, including professional engineers, construction personnel and electrical maintenance technicians in charge of electrical design, as well as for plant safety managers, planners of electrical systems for residential buildings and a wide range of electricity users. This information covers a wide range of areas, such as the inspection and improvement of electrical circuits in residential buildings and the optimization of the management of plant and machine circuits, and is of interest in improving the safety of electricity in all sectors。
