19
the case of a ramp or step measurement, the measurement result is displayed as follows:
5.03 G
Ω
516 V
98.7 nA
Remaining Time 00:00:00
∆
R
∆
V
∆
R/(R*
∆
V) (ppm/V)
Capacitance
47.9 M
Ω
53.3 V
9
< 1 nF
E-BRK
Test with programmed duration.
Value of the insulation resistance.
Value of the test voltage at the
end of the measurement.
Current at the end of the
measurement.
Duration of the measurement.
Voltage coefficient in ppm/V.
Capacitance of the device
tested.
∆
R: difference of insulation
resistance between the final
resistance (highest test voltage)
and the initial resistance (lowest
test voltage).
∆
V: difference between the final
and initial test voltages.
Record the measurement and compare it to earlier measurements in order to assess the evolution of its value. Also record the
temperature and the ambient relative humidity.
If, at equivalent temperature and humidity, the insulation resistance has fallen significantly, the insulation is deteriorated and
maintenance must be carried out on the device tested.
The result remains displayed until another measurement is made, the switch is turned, or the measurement configuration is changed.
3.3.9. AftEr tHE MEASUrEMENt
Once the measurement has been stopped, the instrument discharges the device being tested in a few seconds. For your safety,
therefore, wait a little before disconnecting the leads. Normally, this happens rapidly and the user is unaware of it. But if the load
is highly capacitive, the discharging time is longer. In this case, for as long as the voltage exceeds 25V, the instrument so indicates
on the display unit and by an audible signal.
DISPLAY
The DISPLAY key is used to look up all information available after the measurement. This information depends on
the type of measurement chosen (see §4.4).
995 M
Ω
502 V
503 nA
Elapsed Time 00:01:20
DAR (30s/60s)
PI (1.0m/10m)
Capacitance
1.00
---
<1 nF
E-BRK
