How to prevent poor fixing of terminal blocks?

I. How to prevent poor fixing of terminals? 1, interchangeability check interchangeability check is a dynamic check. It requires the same series of matching plugs and sockets can be connected to each other plug and match, from which to find out whether there is due to the insulator, contact parts and other parts of the size of the excessively poor, lack of parts or assembly is not in place and other reasons can not be inserted, positioning and locking, and even by the rotating force caused by the disintegration of the role of the force. Interchangeability check is another role through the threads, bayonet and other insertion and extraction connections can be found in a timely manner whether there is an impact on the insulation properties of the metal excess. Therefore, some important use of the terminals should be carried out the project check to avoid such major fatal failure. 2, torque check torque check is an assessment of the structural reliability of the terminals is a very effective method of inspection. Such as the U.S. military standard MIL-L-39012 standards. According to the standard should be sampling each batch of samples for the moment of resistance check, timely detection of problems.3, crimp wire through the test in the electrical installation often found in individual core crimp wires sent to the spot, or sent to the spot after the lock can not be, the contact is not reliable. Analyze the reason is individual installation hole screw teeth burr or dirty stuck. In particular, the use of plant has been installed to a plug seat of the last few mounting holes, found that the defect will have to be installed after the other holes crimped wire one by one to unload, re-replace the plug seat. In addition, due to the wire diameter and crimp aperture selection with improper coordination, or due to crimping process operation errors, will also cause the crimp end of the accident is not secure. For this reason, the production plant in the finished product before leaving the factory to deliver the plug (seat) of the sample of all the mounting holes for through test, that is, with the loading and unloading tools will be crimped with pins or jacks of the wire touching the proposed to send to the position to check whether it can be locked. According to the provisions of the technical conditions of the product, the crimped wire by wire to check the pull-off force.

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