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Chapter 4 Measurement Procedure
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DANGER
When using the grounded side of an AC outlet for
simplified measurement, be sure to check the
outlet first, to determine the grounded side. Use a
suitable checker (electroscope or similar) for this
purpose.
Take proper precautions against electric shock.
If the 3151 is connected by mistake to the live
(hot) side of an outlet and a voltage of 80 V or
more is applied to the input, a warning tone
(beep) is heard.
In this case, immediately disconnect the leads
and check the outlet again.
CAUTION
The warning tone will not sound if the earthing body
is not connected to terminal E. Connect terminal E
first. When the connection is made by mistake on the
power line with the leakage current circuit breaker,
the breaker may be tripped before the beep sounds.
4.3 Simplified Measurement (2-Pole
Method)
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