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Gossen Metrawatt MINITEST 3P MASTER VDE Tester Gossen Metrawatt M712X The Gossen Metrawatt M712X MINITEST 3P MASTER is for periodic testing or testing repaired devices with CEE plugs to DIN VDE 0701 0702 The following measurements are made ground conductor resistance insulation resistance ground conductor current differential current method as well as contact current direct measurement The zero potential is determined by measuring the current All measured values are shown on the LCD
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