Low-voltage power distribution cabinet safety protection method

Abstract

The invention discloses a low-voltage power distribution cabinet safety protection method. When a switching signal of an upper water level sensor changes, a wireless low-voltage power distribution cabinet data collection terminal receives the signal and then transmits an event to all the intelligent residual current action protectors in a low-voltage power distribution cabinet instantly, and an AC contactor coil is controlled to be powered off by the intelligent residual current action protectors. When temperature data are greater than a limit value, the wireless low-voltage power distribution cabinet data collection terminal transmits the event to the intelligent residual current action protectors of corresponding power supply loops instantly, and the AC contactor coil is controlled to be powered off by the intelligent residual current action protectors. Meanwhile, the wireless low-voltage power distribution cabinet data collection terminal transmits the event to a county bureau server, alarm is performed via a real-time monitoring system module and a short message is synchronously sent to an equipment administrator mobile phone. Inconvenience caused by using an infrared temperature measuring instrument in cable wire temperature measurement in daily tour inspection is solved by the low-voltage power distribution cabinet safety protection method.

Description

[0001] The patent application of the present invention is a divisional application of the invention title "an improved structure of safety protection device for low-voltage power distribution cabinet". The original application date is May 31, 2012, and the application number is 2012101800325. technical field [0002] The invention relates to a safety protection method for a low-voltage power distribution cabinet. Background technique [0003] At present, power supply companies have not considered the temperature monitoring and fault automatic disconnection isolation measures at the connection between the cable and the RTO fuse, and when the equipment is inspected every month, the safety regulations stipulate that direct contact with the cable is not allowed with hands, so the surface of the cable cannot be inspected temperature. If a certain line of a certain group of low-voltage cables is burned due to loose connection or overload and heat, resulting in a short circuit, it ...

AI Technical Summary

Problems solved by technology

[0003] At present, power supply companies have not considered the temperature monitoring and fault automatic disconnection isolation measures at the connection between the cable and the RTO fuse, and when the equipment is inspected every month, the safety regulations stipulate that direct contact with the cable is not allowed with hands, so it is impossible to check the surface of the cable temperature

If a certain line of a certain group of low-voltage cables is burned due to loose connection or overload and heat, resulting in a short circuit, it will affect the scrapping of this group of cables or the burning of equipment in the entire low-voltage power distribution cabinet. Power outages for users under low-voltage outlets, most of which are power outages for several groups of low-voltage outlets connected to users in the entire low-voltage power distribution cabinet

In addition, whenever there is a heavy rainstorm, the low-lying power distribution room often accumulates water, and it has also happened that the water flooded to the RTO fuse of the low-voltage outlet and burned the entire equipment in the low-voltage power distribution cabinet.

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