For safety reasons, I would like to point out that the complete testing of permanently connected devices may only be carried out by a qualified electrician. In the case of a test specimen in which liquids and current act, we recommend that you carry out the complete test in any case. Only the insulation resistance measurement indicates a beginning insulation damage.
Connect your SECUTEST to the grid near the test object, but not on the same circuit.
Start the test procedure VDE 0702, without connecting anything to the tester. The SECUTEST then automatically enters the test procedure for permanently connected devices and displays this in the second line on the screen.
Switch off the fuse for your test object in the distribution.
Open the junction box where the DUT is connected to the mains, if accessible. If not, continue with the item "Connection not accessible".
After the visual inspection you will be asked to check the protective conductor. Use the probe to contact the metallic housing parts that are accessible. In this protective conductor test, the connection cable of the SECUTEST and the distribution are also measured. This may cause the resistance to be just above the threshold. In this case, cancel the test here and calibrate the zero point of the test for this arrangement in the device.
To calibrate the zero point, switch to PE, start the measurement, and use the probe to contact the protective conductor connection of the test object in the junction box on the mains. - Therefore, this can only be done by a qualified electrician! - With the button right down zero, the correction value is determined. Then press the up arrow key to save this correction value in SECUTEST. Start again the test procedure in VDE0702. Now the protective conductor resistance is determined correctly.
The next test step measures the insulation resistance. To do this, contact the probe at L and at N in the socket of the DUT. As mentioned above, the power must be switched off here. If the neutral conductor is not disconnected from the mains by a 2-pole circuit breaker, the insulation resistance measurement can only be carried out if the neutral conductor in the junction box is disconnected from the mains. After that, the N-conductor must of course be reconnected.
Close the junction box and switch on the mains for the next test step. Use the probe to contact all metallic parts and measure the contact current. For this, the examinee has to run.
Remove the zero point adjustment again in the SECUTEST, otherwise all subsequent checks will be unusable! The procedure is the same as for Correcting, then press the down arrow key to clear the value when prompted.
Connection not accessible:
Deactivate the insulation resistance measurement R-ISO LN-PE - (remove X) in the start screen.
If the PE resistance is not met in this limited test procedure, then you must estimate the cable length from the distributor to the junction box and enter this length as requested. Then you can approach the true conditions.
Subsequently, the contact current measurement takes place immediately. An insulation resistance measurement is not possible.