Hioki 3151 - Notes on Use; Usage Precautions

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Notes on Use
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DANGER
When measuring earthing resistance, a voltage
of maximum 50 Vrms exists across the
measurement terminals E - C(H). Take proper
precautions against electric shock.
When performing a simplified measurement (2-
pole method) with the instrument connected to
the earth side of a household power supply (AC
outlet), take proper precautions against electric
shock.
Notes on Use
Follow these precautions to ensure safe
operation and to obtain the full benefits of the
various functions.