How to enhance the anti-interference ability of the fan wet curtain?
The author:AdminPopularity:326release
time:2017-08-09
Fan wet curtain use will always encounter some problems, these problems are subject to some external role, too much noise not only affect the use of the effect of the fan wet curtain, but also affect people's production and health, enhance the wet curtain fan Anti-interference, but also we need to proceed from the following aspects: isolation, set the filter, shielding interference sources.
1, isolation method. Interference of interference means that the interference source and the susceptible part of the circuit are isolated from the circuit so that they do not come into contact with each other. In the variable frequency drive system, it is usually between the power supply and the amplifier circuit Of the power line using isolation transformer to avoid conduction interference. Power isolation transformers can use noise isolation transformers.
2, set the filter, the main role is to suppress the interference signal from the inverter through the power line conduction interference power box motor, in order to reduce the electromagnetic noise and loss, in the inverter output side can be set output filter. To reduce interference to the power supply, set the input filter at the input side of the drive. If the line has a sensitive electronic equipment, wet curtain fan chassis can be set in the power line noise filter, so as to avoid interference.
3, shielding interference sources, after finding the source of interference to the source of interference to shield is the most effective way to suppress interference, usually the inverter itself with iron shield, do not let the electromagnetic interference leakage. The output line is best to use steel pipe shield, especially when the external signal control inverter, the signal line as short as possible, and the signal line with dual-core shield, and the main circuit and control circuit completely separated, can not be placed in the same piping or line In the tank, the surrounding electronic sensitive equipment lines also require shielding. In order to make the shielding effective, the shield must be reliable and safe grounding.
These methods can achieve a good anti-jamming effect, we can reasonably choose.