Hioki FT6031 - Measuring Earth Resistance

39
Precise Measurement for Earth Resistance
(Precise Measurement Method, Three-pole Method)
Measuring earth resistance
1
2
3
1
Press the button to turn it on.
2
Press Fn button to display
(three-pole method).
Earth potential appears on the display.
3
Press MEASURE button so that the
device automatically executes the
earth potential check→auxiliary earth
resistance check→earth resistance
measurement in sequence.
The measurements will be completed in
approx. 8 seconds, and then the measured
value appears and
lights up.
4
Check the measured value.
When NOISE Appears
If the earth potential is high (10 V rms or 14.3 Vpk or higher),
and the earth potential peak value appears on the display.
When is on, or when (live wire warning LED) is blinking,
it is not possible to measure earth resistance.
Since leak current is owing into the earthing electrode, rst
disconnect any electric equipment connected to the earthing
electrode and then press MEASURE button again.