20
21
-1
1
32
Power Supply PS1000-A6-12.16
Dielectric Strength
22
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.
Figure 22.1 Dielectric strength
B*) When testing input to DC-OK ensure that the max. 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.
To fulfill 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.
A
D
C
B
B
* )
L
Input
DC-ok
13
14
Earth, PE
Output
+ / -
15,16
ON/OFF
N
A
B
C
D
Type test
60s
2 500Vac
4 000Vac
1 000Vac
500Vac
Factory test
5s
2 500Vac
2 500Vac
500Vac
500Vac
Field test
5s
2 000Vac
2 000Vac
500Vac
500Vac
Cut-off current setting
> 10mA
> 10mA
> 20mA
> 1mA
