What should I do if the busbar is discharged wet? What should I do if the high voltage switchgear is

An overhead dehumidifier can be installed on the top of the busbar to solve the moisture in the busbar, and the discharge phenomenon will not occur, such as the HK-Sepri-Q overhead dehumidification device, which is specially developed for the dehumidification of electrical equipment and the prevention of condensation. This device is installed on the top of the electrical equipment, displaces the air in the cabinet, condenses the humid air into water through local condensation conditions and isolates the atomization and discharges out of the cabinet, and the dried air is reinjected into the cabinet, and at the same time forms a slight positive pressure in the cabinet to reduce the air humidity in the cabinet and inhibit the entry of the outside humid air. It has a significant effect on the prevention of aging of equipment in the cabinet, reduction of dielectric strength, breakdown of secondary terminals, mildew of materials and corrosion of steel structure parts caused by moisture and condensation.

This device is the preferred dehumidification equipment to ensure the efficient and safe operation of smart grids.

The HK-Sepri-Q overhead dehumidifier is installed on the top of the busbar room to atomize the moist air.

Lift the high-voltage cabinet more than a meter above the ground? Then do it waterproof! Don't store water in the wire gutter!

These are the basic requirements. But who did? It's really not okay to redo it, not to mention that discharge is easy to cause voltage instability, and it is easy to damage the equipment of electronic components!

The discharge will create a surge voltage, which is the Achilles' heel of the triode! You may not feel it, but gradually all the electronic devices of this line will break down one by one. Redo it as requested!

Try to keep the high-voltage cabinet dry, the air is humid on rainy days, a lot of moisture will invade the high-voltage cabinet, and the electrical equipment is prone to discharge when it is wet, you can install a suitable dehumidification device such as spr-cn-s1 and so on in the high-voltage cabinet.

The switch cabinet is too wet to cause discharge, first of all, it is necessary to solve the problem of moisture, and there are many ways to solve the moisture of the switch cabinet, each with its own advantages and disadvantages, such as the following: natural ventilation method, forced ventilation (exhaust) method, electric heating method, desiccant dehumidification and other methods, but the dehumidification effect is not satisfactory, the specific reasons are as follows:

1. Natural ventilation methodThe natural ventilation method is mainly to optimize the basic design of the switch cabinet, block the water vapor from entering the cable room, raise the height of the switch cabinet foundation to the ground, install shutters on the foundation to make the internal air and the external air form an effective circulation, reduce the internal humidity of the space below the gateway cabinet, so that the humid air no longer enters the cable room, and the ambient humidity does not work when the ambient humidity is large, which is easy to cause dust and dirt to enter and cannot achieve the purpose of moisture-proof.

2. Forced ventilation Forced ventilation by exhaust method The exhaust method is to install an exhaust fan at the bottom of the box cabinet and an exhaust fan on the top side to accelerate the air circulation inside the cabinet, so that the air inside the cabinet has been in an unsaturated state and destroy the condensation formation conditions. The disadvantage is that this method needs to configure equipment such as fans, and noise will be generated during operation, and the internal space of some cabinets is limited at the same time, and it is difficult to install.

3. The electric heating method is to install an aluminum alloy heater (generally 150W) in the cable room and circuit breaker room under the cabinet to increase the internal gas temperature of the cabinet by heating, reduce the relative humidity and prevent condensation from forming. However, due to the tight closure in the box, the steam cannot be discharged out of the box in time after heating, which will make the place with condensation more and more serious, and the place with less condensation will also increase the speed of condensation. If this goes on for a long time, it will cause serious consequences, such as rust and mildew of cables and terminal strips, and the service life of the equipment will be greatly reduced.

For the terminal box of the substation where the condensation phenomenon is more serious, water droplets may drip on the terminals and a ground fault may occur.

4. The desiccant method uses desiccant to absorb the moisture in the cabinet to avoid the formation of condensation, which is simple and easy to use, but in fact, because its water absorption effect is limited, and the absorbed water is difficult to discharge, the effect is often not obvious, and the maintenance workload increases.

To carry out a long-term and effective method for the moisture in the cabinet, the method used in the major substations is to install intelligent dehumidifiers in the cabinet, such as SEPRI-CS-NL(E) anti-condensation device and SPR-CN-S1 intelligent dehumidifier, which is small in size and can discharge the moisture in the cabinet through the hose. It can also be dehumidified at low temperatures. Realize automation, when the humidity in the cabinet exceeds the standard, it will work automatically.

The switch cabinet has a heating and damp removal device, and the weather tide should open a group of regular casts and a group of automatic thermostats.

You can try a company called what is Dayou in Tianjin to produce a kind of high-voltage insulating coating called DR60, spray this coating on the surface of the components in the switchgear, such as handcars, bus bars, contact boxes, transformers, etc., it can play a moisture-proof insulation effect, the effect is good, you can try, our factory did it three years ago, until now it has been running very well, and the discharge sound is not so obvious on rainy days, and it is basically inaudible.

The easiest way to do this is to keep it ventilated and eliminate moisture.

The discharge caused by moisture can be solved by first solving the dampness in the switch cabinet, and the dehumidification device in the switch cabinet can be installed.

Depending on how wet you are, if you see obvious water droplets, you can't! If it is only subject to moisture, it doesn't matter, after the power is transmitted, the temperature rise of the bus can be used to evaporate the moisture, and the general high-voltage bus should have a hot air device or a micro positive pressure device, just to ensure that the inside of the bus is not damp!

There is a discharge spark in the busbar of the high-voltage cabinet, which means that the fastening screws of the busbar are loose, or the porcelain bottle has cracks, and in this case, the busbar will be blacked out for maintenance as soon as possible.

The voltage level of the switch cabinet bus room is relatively high, and the insulation distance requirements are also relatively high. When there is condensation in the bus room of the switch cabinet, the dehumidification equipment in the switch cabinet is generally not used. Some overhead dehumidifiers can be added. As shown in Fig.

This dehumidification device can replace the damp gas in the bus room of the switch cabinet or condense into water and discharge it to the cabinet. It is safer to use this method. This kind of equipment installation requires a power outage, and must not be installed with electricity.

The insulation problem may be that the safety distance is relatively limited. For example, the two busbars are very close to each other, or they are close to the conductor and the ground.

It is solved by increasing insulation. For example, adding insulating boards and insulating sleeves.

The treatment method of damp discharge of the TV electromechanical board is to rent branches: it is sensitive.

First, disassemble the TV shell first.

2. Take out the circuit board of the TV. <>

3. Clean up the dust and moisture on the circuit board with a bristle brush and a hair dryer.

Fourth, the circuit board is dried or naturally air-dried.

5. Reinstall the circuit board and shell of the TV.