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Home > Forums > Electrical / Electronic Engineers > Activities > Electrical/Electronic engineering other topics Forum

IR test for anode with cable for Cathodic protection

Read More Threads Like This One

Jed057 (Electrical)

10 Apr 11 18:46

Anyone help me,

whatis voltage level to check insulation resistance for anode with cable and earth for cathodic protection.,nomaly this anode for positive ptention from rectifier 50V.

Thank

7anoter4 (Electrical)

6 May 11 10:12

If you intend to test the insulation resistance of the cable you have to be sure the anode end is dry and the connection box end disconnected and then for a rated cable of 600 V [HMWPE] minimum resistance measurer with a tester of 500 V could be 2 megohm .See for instance:
http://www.nexans.us/eservice/US-en_US/fileLibrary/Download_540198890/US/files/Nexans%20Insulation%20Testing%20of%20Low%20Voltage%20Cables%20in%20the%20Field%20-%202010-06-25.pdf
But you don't have to test the IR of the cable. In order to test the cathodic protection system see:
http://efotg.sc.egov.usda.gov//references/public/NE/NE_EFH_650_Cathodic_Protection_Maintenance_Testing_pgs6-34g-k.pdf
The IR test on completed [new] cable in the manufacturer shop will be according to
ANSI/NEMA WC 70-2009/ICEA S-95-658-2009 ch.6.10.2 Insulation Resistance.

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