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    When Is It Done? Post Termination

    Uploaded by

    Will Buick
    TDR, IR, VLF, tan delta, PD, and OTDR tests are performed on cables at different stages: 1. TDR is done after pull-in but before termination to check cable length and integrity. 2. IR and VLF are basic tests done post-termination to verify insulation integrity and intentionally stress the cable. 3. Tan delta, PD, and OTDR are also post-termination tests that further evaluate insulation quality, partial discharges, and fibre optic length/splices.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    When Is It Done? Post Termination

    Uploaded by

    Will Buick
    19 views1 page
    TDR, IR, VLF, tan delta, PD, and OTDR tests are performed on cables at different stages: 1. TDR is done after pull-in but before termination to check cable length and integrity. 2. IR and VLF are basic tests done post-termination to verify insulation integrity and intentionally stress the cable. 3. Tan delta, PD, and OTDR are also post-termination tests that further evaluate insulation quality, partial discharges, and fibre optic length/splices.

    Original Description:

    Testing methodology

    Original Title

    Testing Timeline

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    TDR, IR, VLF, tan delta, PD, and OTDR tests are performed on cables at different stages: 1. TDR is done after pull-in but before termination to check cable length and integrity. 2. IR and VLF are basic tests done post-termination to verify insulation integrity and intentionally stress the cable. 3. Tan delta, PD, and OTDR are also post-termination tests that further evaluate insulation quality, partial discharges, and fibre optic length/splices.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    19 views1 page

    When Is It Done? Post Termination

    Uploaded by

    Will Buick
    TDR, IR, VLF, tan delta, PD, and OTDR tests are performed on cables at different stages: 1. TDR is done after pull-in but before termination to check cable length and integrity. 2. IR and VLF are basic tests done post-termination to verify insulation integrity and intentionally stress the cable. 3. Tan delta, PD, and OTDR are also post-termination tests that further evaluate insulation quality, partial discharges, and fibre optic length/splices.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 1

    TDR / OTDR post loadout test on vessel

    Time Domain Reflectometry (TDR) Test
    When is it done? Pre‐termination test. This test is completed after 
    Boskalis pull the cable in but before the cable ends are terminated.

    Description: The purpose of this test is to verify the length of the 
    installed conductor and also look for any "ripples" in the waveform 
    that can indicate damage during pull‐in.

    Insulation Resistance (IR) test ‐
    When is it done? 

    This test is a basic test that involves putting 5000V on a 
    cable to verify the integrity of the cable insulation.

    Very Low Frequency (VLF) Test
    When is it done? Post termination, 

    Description: This is the most important test and is conducted 
    before Partial discharge and tan delta. This test involves 
    putting a high voltage down the cable to intentionally stress it.

    The voltage is increased in increments up to 2.2 x operating 
    voltage

    Optical time domain reflectometry (OTDR) Test

    Tan δ When is it done? Post termination.
    When is it done? Post termination. Description: OTDR test, verifies the fibre optic length and checks inegrity of the splices

    Description: Tan Delta, also called Loss Angle or Dissipation 
    Factor testing, is a diagnostic method of testing cables to 
    determine the quality of the cable insulation. This is done to try to 
    predict the remaining life expectancy and in order to prioritize 
    cable replacement and/or injection.

    Partial Discharge (PD) Test

    When is it done? Post termination.
    Description: A partial discharge (PD) is an electrical discharge or spark that bridges a 
    small portion of the insulation between two conducting electrodes. Partial Discharge can 
    happen at any point in the insulation system, where the electric field strength exceeds the 
    breakdown strength of that portion of the insulating material.

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