HT instruments SIRIUS89N - Manual (Page 52)

SIRIUS89N
EN - 50
6.5.1. Measurement procedure and results of "2-W"and "3-W" mode
1. Select "
2-W" or "3-W" Earth measurement mode by means of the F1 key.
2. Connect the Black, Red, Green and Blue cables to the corresponding input terminals
of the instrument
B1, B2, B3, B4 (see possible connections in the following pictures).
Connection for 3 point Earth resistance
measurement
Connection for 2 point Earth Resistance
measurement
Connection for measuring the resistance between an extraneous conductive part and the earth system
3. Press the
START key. The instrument starts the test.
EARTH 05.06.01 Earth Resistance value
expressed in
Ω.
Voltage value of electrical
noise
Number of Test
At the end of the test
the instrument emits a
double sound signal
indicating that the
test is correctly
terminated
and
displays the values
alongside.
0.77
Ω
Vd= 1V
Test:04
RAVG=0.74
Ω
3-W
!
"3 Point" Working mode FUNC CLR
Average Value of Earth
Resistance calculated over
the Number of Test
displayed.
4. The instrument will show automatically the Average value of the Earth resistance
calculate over the tests performed. Press F2 to RESET this value and the number of
Test.
This result can be stored pressing the
SAVE key twice (according to paragraph 9.1).
START
STOP