ぜつえんていこうけい 絶縁抵抗計
1. insulation resistance tester
Wikipedia definition
2. OhmmeterAn ohmmeter is an electrical instrument that measures electrical resistance, the opposition to an electric current. Micro-ohmmeters (microhmmeter or microohmmeter) make low resistance measurements. Megohmmeters (aka megaohmmeter or in the case of a trademarked device Megger) measure large values of resistance. The unit of measurement for resistance is ohms. The original design of an ohmmeter provided a small battery to apply a voltage to a resistance.
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