Use; Implementation; Earth Resistance Measurement - Chauvin Arnoux C.A 6460 Manual De Instrucciones

I I I I I Buzzer
The equipment features a buzzer which buzzes when the
terminals of the equipment are connected to a voltage source.
The sound volume is proportional to the voltage up to
approximately 30 V then becomes stable.
3.1

Implementation

I Connect the cords to the equipment using the forked
terminals and in compliance with the terminal colours.
I Pay out the cords and set the stakes at the ends.
I Connect the cords to the stakes using the alligator clips.
I Return to the equipment, press the pushbutton and read
the measurement results.
3.2

Earth resistance measurement

To measure the earth resistance, it is advisable to use the
"62%" method (method using two stakes). This measurement
requires the use of the earth Kit components (see paragraph
7 to order).
Earth
connection
Turn off the installation power supply and disconnect it
from the earth by opening the ground terminal bar.
1. Shor t-circuit the terminals E and ES using the
corresponding terminal bar and connect them to the earth
point to be measured.
2. Push rod H as deep as possible into the ground at a
distance "a" from the earth to be measured.
Note: the deeper the earth the greater this distance should
be (larger area of influence). If possible, it is advisable to
have a distance "a" > 25 m
3. Insert rod S into the ground on a line between the earth
connection E and rod H, at a distance of 62% of "a".

3. USE

rod S
23
rod H