20
21
-1
1
32
Power Supply PS1000-A6-24.20.R
Dielectric Strength
21
Dielectric Strength
The output voltage is floating and has no ohmic connection to the ground. Type and routine
tests are conducted by the manufacturer. Field tests may be conducted in the field using
the appropriate test equipment which applies the voltage with a slow ramp (2s up and 2s
down). Connect all input-terminals together as well as all output poles before conducting
the test. When testing, set the cut-off current settings to the value in the table below.
It is recommend that either the + pole, the – pole or any other part of the output circuit shall
be connected to the earth/ground system. This helps to avoid situations in which a load starts
unexpectedly or can not be switched off when unnoticed earth faults occur.
Figure 21.1 Dielectric strength
B*) When testing input to DC-OK ensure that the maximal voltage between DC-OK and the output is not exceeded
(column D). We recommend connecting DC-OK pins and the output pins together when performing the test.
A
B
C
D
Type test
60s
2 500Vac
3 000Vac
1 000Vac
500Vac
Routine test
5s
2 500Vac
2 500Vac
500Vac
500Vac
Field test
5s
2 000Vac
2 000Vac
500Vac
500Vac
Cut-off current setting for field
test
> 10mA
> 10mA
> 20mA
> 1mA
