Two measuring modes are provided: Sensitive or Protected mode.
It is recommended to start the measurement with sensitive mode. When
the interference voltages overload the indicator a warning appears
informing the user that the result can be inaccurate. In that case the
measurement should be repeated in protected mode.
• Select the proper mode with the MODE (F5) key
The measurement time depends on the cable length. The proper range
can be selected with the F2 to F4 keys
• Start the measurement with the START/STOP key
Having the measurement completed the test results appear.
Displayed Test Results
• Riso resistance between wire a and wire b
• RaE resistance between wire a and GND ( wire b joined to GND)
• RbE resistance between wire b and GND (wire a joined to GND)
• Vab, VaE and VbE AC and DC measured disturbing voltages
Calculation of Ω/km when the cable length is known
• Press the LENGTH (F5) key
• Type in the length value and press ENTER
For returning to the normal display
• Press the LENGTH (F5) key and press ENTER
Notice:
The cheap and simple instruments can perform only 2 Pole
measurements. For the sake of comparison KMK 8 also provides the 2
Pole measuring mode. To select that mode press 2 POLE (F1) key
The 2 Pole measurement is performed in the following arrangement:
Riso = Fab parallel with (FaE + FbE)
RAE = FaE parallel with (Fab + FbE
RBE = FbE parallel with (Fab + FaE)
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