20
Rockwell Automation Publication 1606-RM109A-EN-P - August 2020
Power Supply —12V, 10 A, 120 W, Single Phase
Dielectric Strength
The output voltage is floating and has no ohmic connection to the ground. The
output is insulated to the input by a double or reinforced insulation.
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 (2 s up and 2 s down). Connect all input- terminals
together and all output poles before conducting the test. When testing, set the
cut-off current settings to the value in the table below.
Figure 23 - Dialectic Strength
IMPORTANT
Connect either the + pole or the – pole 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
B
C
D
Type test
60 s
2500V AC
3000V AC
1000V AC
500V AC
Routine test
5 s
2500V AC
2500V AC
500V AC
500V AC
Field test
5 s
2000V AC
2000V AC
500V AC
500V AC
Field tests cut-off current settings
> 10 mA
> 10 mA
> 20 mA
> 1 mA
(1) 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.
D
A
C
B
B
N
L
Input
DC OK
Earth, PE
Output
-
+
1
