Loop for monitoring conductive pollution

Abstract

The invention provides a loop for monitoring conductive pollution. The loop comprises a main loop power supply and a main loop circuit breaker Q, wherein the input end of the main loop circuit breaker Q is connected with the main loop power supply, while the output end is connected with an electric load; the main loop power supply is connected with an uncontrolled rectifying circuit, and the output end of the uncontrolled rectifying circuit is connected to the two ends of a discharging gap X; and one end of the discharging gap X is connected with a current sensor CT, and the current sensor CT is connected with a monitoring circuit. The loop has the beneficial effects that the problem that most conductive pollution cannot be effectively monitored in a closed charged space is solved, and an early warning signal can be sent out when the concentration of a conductive pollution source is too large. All or part of the power supply is cut off through an external control protection device, so that potential safety hazards caused by too much conductive pollution in the closed space are avoided.

Description

technical field [0001] The invention belongs to the field of electric power application, in particular to a circuit for monitoring conductive pollution. Background technique [0002] Inside the existing cabinets, electrical components are often short-circuited due to untimely maintenance, insufficient IP rating, sudden dust pollution and other reasons, which may cause fire and other dangers in severe cases. [0003] At present, most monitoring instruments on the market use the attenuation principle of optical signals. When the dust concentration is too large, the light source signal received by the receiving end attenuates to a certain threshold, and is converted into a digital or analog signal through the back-end circuit. [0004] But in most electrical equipment used outdoors, a small amount of dust suspended in the air will not cause malfunction. And because of the air flow, at some point, the attenuation of the optical signal may cause false alarms of the instrument. ...

AI Technical Summary

Problems solved by technology

And because of the air flow, at some point, the attenuation of the optical signal may cause the instrument to falsely report

Therefore, when using optical signal monitoring instruments, for some industrial-grade electrical equipment, the monitoring accuracy is extremely low, and the light source needs to be cleaned regularly, resulting in higher maintenance costs in the later period

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