10.6 Two-clamp stake-less measurement (MFT1835 and MFT1845+ only)
Before making a stake-less measurement, please follow the procedures contained in the calibration section of the
MCC1010 User Guide.
Electrode
under test
I
CAT IV
300V
12-15V
1.2A
H E S
V
1. Ensure the rotary selector switch is in the OFF position.
2. Connect the instrument as shown above.
3. With this method, the MCC1010 may be positioned directly around the Electrode under test or around the Earth
Conductor itself. The MCC1010 should be positioned below the MVC1010. Ensure the arrow on the side of the
jaw is pointing in the same direction as the arrow on the MVC1010.
4. Close the MVC1010 around the conductor under test. Ensure the arrow on the side of the jaw is pointing in the
same direction as the arrow on the MCC1010.
(If one of the clamps is reversed, the main display shows ‘Err’ momentarily with ‘REV’ on the auxiliary display together
with the MVC1010 symbols).
5. Ensure a minimum separation of 100 mm between the MCC1010 and MVC1010.
6. Set the rotary selector switch to the
position.
7. Press and release the
TEST
button. The instrument will perform pre-measurement checks, the status of which
will be indicated on the display.
8. The stake-less resistance reading will be displayed.
NOTE :
The instrument will display the warning triangle above 2 A – no “Stakeless” testing is possible under this
condition.
Ensure that the MVC1010 and MCC1010 jaw mating surfaces are free of dust and contamination and that they
contact completely when the MVC1010 and MCC1010 are closed.
Currents carried by conductors in close proximity to the MVC1010 and MCC1010 may affect calibration and
reduce the accuracy of measurements made.
If the MVC1010 opens at any time after the
TEST
button is pressed, the test will be aborted.
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MFT1800 series
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Earth resistance measurement
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