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2.5.11 Voltage Disturbance Limit
In SET-UP, press the
• "dISt" appears in the small display.
•
• Modify this value if necessary using the button (possible choice
If no interference voltage is present, choose 0.03 to obtain a rapid measurement
build-up time.
Example: If an insulation measurement is performed at a test voltage of 5000V and the
limit is set to 0.10, it will be possible to perform a correct measurement with the presence
of an external interference voltage ≤500V, to the detriment of a longer measurement
build-up time.
2.5.12 Automatic Measuring Range
In SET-UP, press the
• "rAnG" appears in the small display.
•
Use the
(Auto on the main display) measurement range.
The choice of a fixed measurement range optimizes the measurement build-up
time for a known value of insulation resistance.
Example: Choice of range 1 for a measurement greater than 500GΩ.
Note: In most cases, "Auto" should be selected.
Megohmmeter Models 5050/5060
0.561.8187
button five times:
"003U" (flashing) appears in the main display.
between: 0.10 - 0.20 - 0.03).
NOTE: This adjustment provides the best compromise between the measure-
ment build-up time and the presence of external interference voltages (§ 4.2).
button six times:
"Auto" appears in the main display.
button to choose a fixed (1, 2 or 3 on the main display) or automatic
NOTE: The fixed measurement ranges correspond to the current ranges of the
following measurements:
1: 50pA to 200nA (>500GΩ)
2: 150nA to 50µA (500KΩ to 500GΩ)
3: 30µA to 3mA (<500KΩ)
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