36
Precise Measurement for Earth Resistance
(Precise Measurement Method, Three-pole Method)
If the measured value exceeds 3
Ω
, [Err 1] appears and zero adjustment
will not be executed. Zero adjustment settings will be saved even if the
power is turned off.
How to disable zero adjustment
Hold down
0
Ω
ADJ
button for at least one second, while
is on.
Connecting measurement cables
WARNING
•
The maximum rated voltage between input terminals
and the ground is as follows;
(CAT
II
): 300 V rms
(CAT
III
): 150 V rms
(CAT
IV
): 100 V rms
Attempting to measure voltages exceeding this
level with respect to ground could damage the
instrument and result in personal injury.
•
To avoid electric shock, be careful to avoid shorting
live lines with the test leads.
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