Cable Testing and Maintenance: Ensuring Network Reliability
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Cable Testing Phase Continuity and Order
Checking Cable Continuity
To ensure cable continuity, form a loop bridging two phases at one end. Connect the other end to an isolation and tension meter. Test the continuity of the three possible loops, including one to neutral.
A high impedance reading indicates a discontinuity in the cable.
Verifying Phase Identification
To identify phases, ground one phase at one end of the wire. At the other end, connect an isolation meter between each conductor and ground, applying 500V successively. The lowest of the four measurements corresponds to the same conductor on both ends.
Dielectric Strength Test: Low Voltage Cable Insulation
The risk of damaging a new cable depends on the discharge time constant. Never discharge... Continue reading "Cable Testing and Maintenance: Ensuring Network Reliability" »