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Direct Buried cables within a controlled area and what constitutes mechanical protection

Former Community Member
Former Community Member
Hello 


I have a  query raised by a client stating that a PV solar Generation site built on agricultural land is non compliant due to direct buried cables. 

Some of the DC string cable is direct buried roughly at 600 depth laid within  cable sand and protection tape over. 

The cable spec is EU and states is suitable for direct burial. 

The protection system constantly monitors the  insulation resistance and dis engages the inverter upon fault. 

The client has stated a non compliance due that no mechanical protection has been installed underground but all cables above ground are mechanically protected. 

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  • Former Community Member
    0 Former Community Member
    Hi Dave 

    and thanks 

    Exactly my thoughts These sites come under ESQCR as they are Power stations and the owners are in effect are electricity supply generators supplying directly to the grid. 

    EAW 1989 H&S is covered by the Bender ground fault detection system which injects current into the DC strings every morning. They are set at >1M ohm 


    Thanks Dave

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  • Former Community Member
    0 Former Community Member
    Hi Dave 

    and thanks 

    Exactly my thoughts These sites come under ESQCR as they are Power stations and the owners are in effect are electricity supply generators supplying directly to the grid. 

    EAW 1989 H&S is covered by the Bender ground fault detection system which injects current into the DC strings every morning. They are set at >1M ohm 


    Thanks Dave

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