Maintenance points and common fault treatment of electric switch lock
As an important part of power system, electrical switch lock plays an irreplaceable role in power transmission, distribution and control. In order to ensure its normal operation and prolong its service life, we must pay attention to the daily maintenance of the electric switch lock and eliminate all possible faults in time.
A, electrical switch lock maintenance points:
1. Cleaning: the electric switch lock is easily polluted by dust when exposed to the air for a long time. Cleaning the switch surface regularly can effectively avoid problems such as poor contact; At the same time, special attention should be paid to waterproof and moisture-proof measures for equipment installed outdoors or in humid environment.
2. Lubrication: moving parts such as rotating shaft need to be added with lubricant regularly to reduce friction loss and ensure flexible action;
3. Screw fastening: always check whether the screws are loose and fall off, and reinforce them to prevent abnormal vibration and noise;
4. Contact adjustment: For mechanical circuit breakers, when problems such as unsmooth hand feel or inappropriate closing gap are found during operation, it is necessary to readjust the contact position to make it reach an ideal state.
Second, the common faults of electric switch lock and their solutions:
1. Short-circuit fault: In general, short-circuit fault is mostly caused by coil burning caused by overload. At this time, the power supply should be cut off in time to find the cause and repair it;
Cause investigation: check whether there is short circuit in the line (such as direct connection between conductors);
Solution: Replace the damaged components and conduct a comprehensive inspection of the whole circuit before sending it for trial use.
2. Grounding fault: If the equipment shell is charged, it is likely to be caused by the failure of grounding protection, and immediate measures should be taken to prevent personal injury accidents:
Fault judgment methods include measuring insulation resistance and testing interphase voltage with multimeter to determine the specific location;
The emergency measures suggest disconnecting the main gate to isolate the problematic part, and then making a reasonable maintenance plan according to the actual situation.
3. Action failure: This type of problem usually shows that the expected function (on/off) cannot be realized after pressing the button:
Starting with external factors, check whether there are external forces that hinder the normal operation of the switch, such as stuck objects or foreign objects blocking;
Check the internal mechanism for wear and deformation, and replace it with new parts if necessary to restore normal performance.
In a word, doing daily maintenance is one of the most fundamental ways to prevent all kinds of failures, and once encountering unexpected situations, we should calmly analyze the reasons and take corresponding remedial measures to ensure the long-term and stable operation of the equipment!
Rec. Prods.
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