ZMS Cable and Accessories

 For OPPC phase line fiber optic cable conductor, due to the existence of discharge, over the pulley, tightening the line caused by the structure elongation and operation of the temperature rise in the process of expansion elongation and creep elongation generated by plastic deformation, so the fiber residual length requirements are very strict. Fiber optic units should have good mechanical protection to ensure that the fiber is not extruded. To prevent moisture intrusion and affect the service life of the fiber, the fiber should be placed in a closed tube, or take other moisture-proof measures. Then OPPC phase line fiber optic cable wire in the transportation and installation process should pay attention to what issues? 1. The cable tray with fiber optic cable should be rolled in the direction indicated on the side of the plate. Rolling distance should not be too long, and generally should not exceed 20 meters, rolling should pay attention to prevent obstacles to damage the packa...

A cable withstand voltage test is a way to find faults in the presence of cables. It is easily affected by various factors during the test, resulting in problems such as failure and short circuits. The main methods of several cables to withstand voltage tests are described below. The First, Ultra-Low Frequency Withstand Voltage Test The ultra-low frequency (0.1Hz) withstand voltage test method first appeared in 1980. And it is mainly a non-destructive test method for observing whether there is an insulation defect in cable operation. And the method has been verified by a large number of laboratory tests and field tests.  The low-frequency withstand voltage test has a good application effect in the low-voltage power cable withstand voltage test. The method utilizes the principle of converting 50 Hz alternating current into direct current voltage through rectification and filtering.  And then converting the direct current voltage into an alternating current voltage of 1 kHz thro...