Fluke 1625 FE 1625 Users Manual - Page 57

Resistance Measurement (R()

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Earth/Ground Tester Procedure of Measurements 2. Connect instrument according to picture. 3. In this mode, all settings and LIMIT values available can be called with "DISPLAY MENU" and the measuring frequency can be set. 4. Press "START TEST" button. 5. Read out measured value. Resistance Measurement (RF) In this measuring mode all resistances from 0.001 Ω to 3 kΩ can be measured with DC voltage and automatic polarity reversal as per EN61557-5. To achieve highest accuracy 4 pole measurements are possible. To balance the extension lead, a compensation has to be done. START TEST 1625 EARTH / GROUND TESTER H /C2 DISPLAY MENU Earth/Ground Resistance 300 k RA CHANGE ITEM 4 POLE 3 POLE 4 POLE 3 POLE AC Resistance 300 k R DC Low Resistance 3k R 2 POLE 2 POLE 4 POLE SELECT OFF S/P2 ES/P1 E /C1 Figure 18. Resistance Measurement (RF) edw024.eps 1. Connect instrument according to picture. 2. Turn central rotary switch to position "RF". 3. In this mode, all settings and LIMIT values available can be called with "DISPLAY MENU". W Warning Before starting a measurement bring plant or test object to off or de-energized circuit condition! With an external voltage higher than 3 V measurement will not be started. 49

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Earth/Ground Tester
Procedure of Measurements
49
2.
Connect instrument according to picture.
3.
In this mode, all settings and LIMIT values available can be called
with "DISPLAY MENU" and the measuring frequency can be set.
4.
Press "START TEST" button.
5.
Read out measured value.
Resistance Measurement (
R
F
)
In this measuring mode all resistances from 0.001
Ω
to 3 k
Ω
can be measured
with DC voltage and automatic polarity reversal as per EN61557-5.
To achieve highest accuracy 4 pole measurements are possible. To balance the
extension lead, a compensation has to be done.
R
RA
R
Earth/Ground Resistance 300k
AC
Resistance
300k
DC Low Resistance 3k
CHANGE
ITEM
SELECT
START
TEST
DISPLAY
MENU
H/C2
S/P2
ES/P1
E/C1
4
POLE
3
POLE
4
POLE
2
POLE
2
POLE
4
POLE
OFF
3
POLE
EARTH / GROUND TESTER
1625
edw024.eps
Figure 18. Resistance Measurement (R
F
)
1.
Connect instrument according to picture.
2.
Turn central rotary switch to position "R
F
".
3.
In this mode, all settings and LIMIT values available can be called
with "DISPLAY MENU".
W
Warning
Before starting a measurement bring plant or test object to
off or de-energized circuit condition! With an external volt-
age higher than 3 V measurement will not be started.