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Power Supply PS1000-A6-48.5
Dielectric Strength
21
Dielectric Strength
The output voltage is floating and has no ohmic connection to the ground. Type and factory
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.
To fulfil the PELV requirements according to EN60204-1 § 6.4.1, we recommend that either
the + pole, the - pole or any other part of the output circuit shall be connected to the protective
earth system. This helps to avoid situations in which a load starts unexpectedly or can not
be switched off when unnoticed earth faults occur.
Type test
Factory test
Field test
Cut-off current settings
*
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.
Figure 21.1
60s
2500Vac
5s
2500Vac
5s
2000Vac
> 10mA
Input
L
N
A
E arth, P E
Dielectric strength
A
B
4000Vac
2500Vac
2000Vac
> 10mA
DC -ok
* )
B
D
Output
C
+
-
C
D
1000Vac
500Vac
500Vac
500Vac
500Vac
500Vac
> 20mA
> 1mA
31
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