Dielectric strength
The output voltage is earth-free and has no ohmic connection to earth. Type and component tests are carried out by the manufacturer. Field tests can be performed in the field using suitable test equipment that ramps up the voltage with a slow ramp (2 s rising and 2 s falling). Connect all input terminals and all output poles to each other before performing the tests. During the test, set the cut-off current to the value shown in the table below.
B*) When checking the input to DC-OK, make sure that the maximum voltage between DC-OK and the output is not exceeded (column D). When performing the test, we recommend connecting the DC OK contact pins and the output contact pins.
| A | B | C | D | |
|---|---|---|---|---|---|
Type test | 60 s | 2500 Vac | 3000 Vac | 500 Vac | 500 Vac |
Component test | 5 s | 2500 Vac | 2500 Vac | 500 Vac | 500 Vac |
Field test | 5 s | 2000 Vac | 2000 Vac | 500 Vac | 500 Vac |
Setting the cut-off current | > 20 mA | > 20 mA | > 40 mA | > 1 mA | |
To meet the PELV requirements according to EN 60204-1 section 6.4.1, we recommend connecting either the positive pole, the negative pole or another part of the output circuit to the protective conductor system. This avoids situations in which the load starts unexpectedly or cannot be disconnected if an unnoticed earth leakage occurs.