A NEW METHOD FOR INSULATION RESISTANCE MEASUREMENT AT LOW VOLTAGE LEVEL USING CHANGE OF EFFECTIVE RESISTANCE

Kyu-Tae Kim, Kwang-Min Yu

Abstract

Test of insulation resistance is pre-requisite for leakage effect evaluation in many electrical measurements. Especially high resistance measurement at low working voltage is often required for evaluation of high precision measurement system. The high resistance measurement at low voltage level with portable hand-set is a challenging task. Here we suggest a simple and convenient method to measure the insulation resistance of up to 10 TΩ order using the principle that effective resistance changes when insulation resistor under test is connected to a reference resistor. A prototype demonstration shows 10 % accuracy level can be easily achieved for 10 TΩ measurement with 10 V test voltage.

Keywords

insulation resistance

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IMEKO-WC-2009-TC4-047.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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