A safety protection method for low-voltage power distribution cabinet

Abstract

The invention discloses a safety protection method for a low-voltage power distribution cabinet. When the upper water level sensor switch signal changes, the wireless low-voltage power distribution cabinet data collection terminal immediately sends an event to all intelligent residual current actions in the low-voltage power distribution cabinet after receiving the signal Protector, the intelligent residual current action protector controls the AC contactor coil to power off. When the temperature data is higher than the limit value, the data collection terminal of the wireless low-voltage power distribution cabinet will immediately send an event to the intelligent residual current action protector of the corresponding power supply circuit. The intelligent residual current action protector controls the power-off of the AC contactor coil, and at the same time, the data collection terminal of the wireless low-voltage power distribution cabinet sends this event to the server of the county bureau, and the real-time monitoring system module gives an alarm and synchronously sends a text message to the mobile phone of the equipment administrator. The invention solves the inconvenience caused by using the infrared thermometer for daily inspection to measure the temperature of the cables.

Description

[0001] The patent application for the present invention is a divisional application of the invention titled "An improved structure for the safety protection device of a low-voltage distribution cabinet". The original application date was May 31, 2012, and the application number was 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 at the connection between the cable and the RTO fuse and the automatic disconnection of the fault. During the monthly equipment inspection, the safety regulations stipulate that the cable must not be directly touched with hands, so the surface of the cable cannot be inspected. temperature. If a certain group of low-voltage cables is burnt due to loose connection or overload heating, causing a short circuit, it will affect the group of cables or the entire lo...

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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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