Chauvin Arnoux C.A 6115N, Руководство пользователя

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1. Connect the instrument as shown in the connection diagram.
2. Turn the selector switch to “INSULATION”, automatic L - N - PE or L-PE (2 poles)
If using a measurement cable with 3 separate leads for a bipolar L-PE measurement, the N lead
(yellow) that is not used should be connected to the PE lead (white).
If using the measurement cable with the mains plug, the instrument considers that the phase is found
to the right of the white point situated on the mains plug.
3. Press the “TEST” button.
For a bipolar L-PE measurement, hold down the button until the indicated value stabilises. To stop the
measurement, let go of the button.
4. Read off the measurement.
The residual direct voltage following the measurement is automatically displayed. During this process,
all the capacitances discharge at the same time. This function is automatically activated after each
measurement until the voltage is less than 20 V !
To start a new measurement, press the “TEST” button once more.
To return to the display of the network voltage U
L-N
, turn the selector switch or press CHANGE or SELECT.
WARNING: If there is a capacitive component in the tested element, the measurement can
produce voltages of 510 V which is hazardous for the user. Always let the tested
element discharge through the instrument following measurement. Devices that
are sensitive to overvoltages, e.g. microprocessor- controlled systems, should be
disconnected for safety reasons during measurement.
CAUTION! Insulation resistance measurements are only authorised on non-live installations. The
absence of voltage is automatically checked for during connection. If the voltage is > 20
V, measurement will not be carried out.
NOTE: If users are connected to the network before measurements, ensure that they are disconnected
during the measurement on at least one terminal, (by removing the fuse for example). If the required
insulation resistance values are not achieved, appliances should be completely disconnected from the
network.
5.5.5 Evaluation of the measurement values
The table below gives the minimum values that should be displayed, taking into account error in
measurement, so as to be sure of having sufficient insulation. (see standards).
Theoretical insulation value Minimum values displayed
100 k
Ω
0.107 M
Ω
250 k
Ω
0.266 M
Ω
500 k
Ω
0.531 M
Ω
1000 k
Ω
1.061 M
Ω
10 M
Ω
10.61 M
Ω
100 M
Ω
106.1 M
Ω