Which Insulation Tester is suitable for testing of Insulation Resistances of 132 kV Overhead Lines, 5 or 10kV?
For measurement of Insulation Resistances of the overhead power transmission lines rated above 33 kV either a 5 kV DC Insulation tester is used or 10 kV DC Insulation tester is used. In our case we want to determine the healthiness of the 132 kV double circuit overhead transmission line which is around 25 kms long. Disc type porcelain insulators are used in the line to suspend the conductor from the cross arms.
It would not be normal to want to test the insulators on overhead lines with an insulation tester.
Besides visual checks and cleaning, I would suggest a thermal image camera when the thing is loaded.
If you really want to use an insulation tester, you need something in excess of the line voltage otherwise you achieve very little. Rule of thumb is usually twice line voltage for a megger or at least line voltage for dc hipot.
A look at what is currently available on eBay
Items recently purchased from this site
New Kyoritsu High Voltage Digital Insulation Resistance Tester Kew 3128, Fluke 1555 Kit Insulation Resistance Tester Kit, Megger MIT1020/2 10 kV Insulation Resistance Tester, New Kyoritsu High Voltage Insulation Resistance Tester PI/DAR Meter 3126, Megger MIT520/2 5kv Insulation Resistance Tester, Megger MIT510-2 Insulation Resistance Tester, Megger MIT510/2 Insulation Resistance Testers, NEW TH9101 AC/DC Withstanding Voltage Insulation Resistance Meter Hipot Tester, New TH9101C AC withstand voltage insulation resistance tester, Kyoritsu KEW 6020 Insulation Earth Resistance Voltage Multi Function Testers, NEW TH9101A AC/DC Withstanding Voltage Insulation Resistance Meter Hipot Tester, NEW TH9101B AC/DC Withstanding Voltage Insulation Resistance Meter Hipot Tester, NEW TH9101C AC/DC Withstanding Voltage Insulation Resistance Meter Hipot Tester, New Kyoritsu Pro. High Voltage Insulation Resistance Tester / Meter 3124, New Kyoritsu High Voltage Insulation Resistance Tester PI/DAR Meter 3125, Amprobe AMB-6D MEGATEST 1000 Digital Megohmmeter Insulation Resistance Tester , VICTOR 3125 Insulation Resistance Tester Instruction, VICTOR 3125 Insulation Resistance Tester Instruction , Reed R5002, High Voltage Insulation/Resistance Tester, Amprobe AMB-50 5000V basic insulation resistance tester, Kyoritsu KEW 6030 Insulation Earth Resistance Voltage Multi Function Testers, FLUKE 1507 Insulation Resistance Tester for Hybrid, FLUKE 1507 Insulation Resistance Tester, Insulation Resistance Tester for Hybrid FLU1507, FLUKE FLU1507 INSULATION RESISTANCE TESTER FOR HYBRID BRAND NEW BNIB, Fluke 1507 Insulation Resistance Tester, 5KV 60Gohm Insulation Resistance Meter Tester Megohmmeter Polarization Index , New Fluke 1507 Insulation Resistance Tester, Kyoritsu 3161A Insulation Resistance Tester, Kyoritsu 3148A Insulation Resistance Tester, Kyoritsu 3147A Insulation Resistance Tester, Kyoritsu 3146A Insulation Resistance Tester, Kyoritsu 3145A Insulation Resistance Tester, Hioki 3451 Insulation Resistance Tester 3VA ! WOW !, Hioki 3452-13 Insulation Resistance Tester ! WOW !, UEI IRT20 Insulation Resistance Tester, UEI IRT20, Analog Insulation Resistance Tester – Megohmeter, Kikusui TOS7200 Insulation Resistance Tester TOS 7200, UT513 Insulation Resistance Testers test voltage 5000V, DY1100 Clamp On Ground Earth Resistance Tester Meter Insulation Measurement, Old Black Bakelite James Biddle Series 4 Megger Insulation & Resistance Tester, UT513 Digital Insulation Resistance Meter Tester Megger USB to PC Software , New UNI-T UT513 Digital Insulation Resistance Tester, TES-3660 Autoranging Insulation Resistance Tester Meter, Fluke 1507 Insulation Resistance Testers , UT513 Digital Insulation Resistance Tester 5000V USB , UT513 Insulation Resistance Testers , Megger UT513 Digital Insulation Resistance Tester Meter, UNI-T UT513 UT-513 Insulation Resistance Testers, UT513 Insulation Resistance Tester Meter 0.5M-1000G ohm, UNI-T UT513 Insulation Resistance Tester, UNI-T UT513 Digital Insulation Resistance Tester Meter, UEI DMEG3 Digital Insulation Resistance Tester, UNI-T UT513 Digital Insulation Resistance Tester Meter Megger 1M-1000G OHM 5000V, HIOKI Analog Insulation Resistance Tester 3111, New Digital LCD Insulation Resistance Tester MegOhmmeter 250V~2500V 0.01MΩ~100GΩ, MS5205 Digital Insulation Resistance Multimeter MegOhmmeter Tester 2500V 100GΩ, MS5203 Digital Insulation Resistance Tester 1000V 10G, UT511 Insulation Resistance Testers 500K-10G 1M-1000G, Insulation Resistance Tester Meter Pro Digital High Voltage Measuring Tool New, Digital Insulation Resistance Tester Megger MegOhm Meter 1000V 0.1~2000MΩ DT5500, CEM DT-5500 Digital Insulation Resistance Tester Megohmmeter Meter CE EN-61010-1, Megger BM80/MIN Insulation Resistance Tester, Calibrated for 12 months, Digital Insulation Resistance Megger Phase Sequence Tester Meter 5000V 200GΩ, Digital Insulation Resistance Megger Tester Meter 100/250/500/1000/2500/5000V,
