Product specifications

Appendix A Hardware Units Power Supply Units - Types SD831, SD832, SD833, and SD834
3BSE036351-510 A 371
DC-OK relay contact (SD834 only)
This feature monitors the output voltage, which is produced by the power supply
itself. It is independent of a backfed voltage from a unit that is connected in parallel
to the power supply output.
Short dips will be extended to a signal length of 250ms. Dips shorter than 1ms will
be ignored.
Contact closes: for output voltage > 90% of the adjusted output voltage.
Contact opens: for output voltage dips > 10% below the adjusted output voltage.
Contact ratings: max 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A resistive load 
Min. >1mA, >5 V over open contact.
Isolation voltage:Field test: a.c. 2000 V to input. a.c. 500 V to output.
Table 113. Dielectric Strength
A B C
Dielectric test
voltage
a.c. 2500V a.c. 3000V a.c. 500V
Field test a.c. 2000V a.c. 2000V a.c. 500V
Rules for Field test:
Use appropriate test equipment which applies the voltage with a
slow ramp. Connect L and N together as well as all output poles.