How to clean high and low voltage switchgear?

The main function of the high and low voltage switchgear is to manage the circuit. Distribution box is switched on or off in normal operation mainly through manual or automatic switch. When the circuit breaks down, it will cut off the circuit or alarm mainly through the protection of electrical appliances in order to facilitate personnel maintenance. Although the distribution box is closely related to people's lives, but how to clean high and low voltage switchgear?

1. Testing work

After cutting off the main power switch in the high and low voltage switchgear and contact cabinet, pull out the dirt with the special rocking handle. The dirt should be pulled out deftly. The contact of the voltage transformers should be tightened again without loosening, and the channel should be free from mildew once again.

2. Necessary conditions

Use a shaker to pull the partition switch from the fixed stationary, disconnect the principle of the switching power supply and the matching power supply circuit, so that the switching power supply and the terminal of the load side have obvious direction grounding device.

3. Cleanup steps

Scrub the floating dust, aspergillus flavus and compounds, and thoroughly clean the internal fixation part of the suction isolator switch. Make sure the isolation switch room is free of dirt. Use a clean dry cloth to clean floating dust or dust from isolator switch edges and busway. Verify that the anchor bolts used for the connection of the terminals are properly tightened and that there is no trace of partial overheating. Hot spots can be identified by examining the color of the touched parts, which are usually all silver. Drag the contact point or terminal to check if the cable is strong.

Test adjustment after boot

Switchgear temperature measurement system software is a set of temperature measurement management system with a variety of temperature measurement methods. Now there are a few of most common methods. One is the CT type, obtain electricity to power the controller. But because the line current is not certain, the power supply system is not stable, and the controller's own kinetic energy consumption is insufficient, long time working in the large current will cause its own burning hot, and then endanger the accuracy of temperature measurement. The other is the surface layer acoustic frequency type. After passing through the natural environment with different temperatures, the propagation speed of acoustic frequency is different, and then the temperature measurement is also different. This method is similar to the infrared temperature measurement method. The third is RFID expertise. The server sends the kinetic energy to the passive controller through a transmitting point. The controller receives the future temperature measurement of the kinetic energy and then sends it back to the server through the wireless network.

Matters needing attention in cleaning high voltage switchgear

First of all, before cleaning the high/low voltage switch cabinet, remember to disconnect the power before cleaning. If cleaning the working condition where the power is on, it is easy to cause leakage, short circuit and other situations. Therefore, be sure to check that the circuit is not cut off before starting cleaning.

Second, when cleaning the high and low voltage switch cabinet, it is necessary to avoid moisture residue in the high and low voltage switchgear. If moisture is found, dry rag should be applied to clean it, to ensure that the high and low voltage switchgear can be powered on when it is in a dry state.

Be careful not to clean the distribution box with corrosive chemicals, and avoid touching the distribution box with corrosive liquids or air. If the distribution box encounters corrosive liquid or air, it is easy to make its appearance corrosion and rust and affect its appearance, and is not conducive to its maintenance.

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