Technical data, mounting, wiring
PS3031-4820-0000
29
Version: 1.0
3.18
Dielectric strength
The output voltage is earth-free and has no ohmic connection to earth. Type and factory 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). Before performing the test, connect all phase
connections and all output poles. During the test set the cut-off current to the value in the table below.
Fig. 19: Dielectric strength
*)
When checking the input to DC-OK, make sure that the maximum voltage between DC-OK and the output
is not exceeded (column D). We recommend connecting the DC-OK pins and the output pins when
performing the test.
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
> 10 mA
> 10 mA
> 40 mA
> 1 mA
To meet the PELV requirements according to EN 60204-1 section 6.4.1, we recommend that either the
positive pole, the negative pole or any other part of the output circuit is connected to the protective earthing
system. This helps to avoid situations where a load starts unexpectedly or cannot be disconnected if an
unnoticed earth leakage occurs.
