Universal transfer switch is a commonly used control appliance used to convert one input signal into multiple output signals, and is often used in electrical control systems. However, there are some common faults that may occur with universal transfer switches during use. This article describes these common faults and how to troubleshoot them.
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1. Poor contact with contact
Poor contact contact is one of the most common faults of universal transfer switches, which is manifested as increased contact temperature, ignition, arcing and other phenomena. This can be due to insufficient contact pressure, surface oxidation, dirt, etc.
Exclusion Method:
1. Adjust the contact pressure so that it contacts well.
2. Clean the contacts to remove oxides and dirt from the surface.
3. If the contact is seriously damaged, it should be replaced in time.
Second, the switch is not flexible
Sometimes, the universal transfer switch will have the phenomenon of inflexible switching, which is manifested as switch stagnation, inaccurate stroke, etc. This can be due to mechanical partial failure, loose or damaged internal parts, etc.
Exclusion Method:
1. Clean and lubricate the mechanical parts to ensure smooth switching operation.
2. Inspect the internal parts for loose or damaged parts and replace them if necessary.
3. Adjust the switch stroke to meet the requirements.
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3. Coil failure
Coil failure is also one of the common faults of universal transfer switches, which is manifested as coil heating and burning. This can be due to short circuits between coil turns, damaged coil insulation, etc.
Exclusion Method:
1. Check whether the coil is short-circuited between turns, and repair or replace it if necessary.
2. Check whether the coil insulation is damaged and repair or replace it if necessary.
3. Ensure that the coil working voltage and current meet the requirements to avoid overload operation.
Fourth, the electrical performance is unstable
The electrical performance of the universal transfer switch is unstable, which is manifested as unstable output signal and large error. This can be due to internal circuit failures, aging components, etc.
Exclusion Method:
1. Check whether the internal circuit is normal, and repair or replace it if necessary.
2. Check whether the components are aged and replace them if necessary.
3. Adjust the electrical performance parameters of the switch to meet the requirements.
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