TDK-Lambda Vega 450 Instrucciones De Uso página 19

Vega 450 Handbook
W2 & W5 is followed by V or R indicating voltage or resistance programming, followed by 1, 2, 3 or 4,
where: 1 = Inhibit + Fixed or prog current limit + Fixed 0/V
2 = Inhibit + Fixed or prog current limit + Track 0/V
3 = Enable + Fixed or prog current limit + Fixed 0/V
4 = Enable + Fixed or prog current limit + Track 0/V
W8 is followed by V8, where: V8 = Enable + Voltage Programming + Fixed Current Limit
Adjusting output voltage beyond the stated range may cause overvoltage protection (OVP) to operate, whereby all
outputs will turn off. To reset OVP turn back output voltage adjustment and remove the mains supply for 30 seconds,
and then swich back on.
All the above ratings and limitations apply to the individual modules from which a series or paralleled pair is made.
ES ratings (IEC/EN/UL/CSA 62368-1) and Outputs Connected In Series:
•
Non-earthed outputs that have secondary's with 4 or more turns are ES2 as a single fault in the secondary may
make them exceed the ES1 limits between output and earth.
•
Non-earthed outputs that are in series are ES1 if all the series outputs use 1 turn secondary's and there are no
more than 3 outputs connected in series.
•
For series outputs, all outputs are ES1 except under the following circumstance: Outputs connected in series are
ES2 if the highest rated module output at nominal voltage + 30% + the total voltage of the remaining series
modules at the max rated voltage of each module > 60Vdc < 120Vdc and ES3 for any greater output voltage.
•
The total voltage of series outputs must not exceed 160V.
•
The highest ES rating of any series outputs then applies to all the outputs.
SELV ratings and Outputs Connected In Series:
Outputs are SELV except as described below:
Non-earthed outputs that have secondaries with 2 or more turns are non-SELV as a single fault in the secondary

may make them exceed the SELV limit between output and earth.
Non-earthed outputs that are connected in series are non-SELV unless all the seriesed outputs use 1 turn

secondaries and there are no more than 3 outputs connected in series.
Outputs connected in series are non-SELV if the total output voltage + 20% of the max. rated output voltage of

the output with the highest rated voltage exceeds 60Vdc (the 20% addition allows for a single fault in any one
individual channel).
The total voltage of a seriesed output must not exceed 160Vdc.

If any output or seriesed output is non-SELV then all the outputs in the PSU must be considered non-SELV.

Non-SELV outputs must be guarded or a deflector fitted during installation to avoid a service engineer making

inadvertent contact with the output terminals, or dropping a tool onto them.
All outputs have operational spacings to earth, and due consideration must be given to this in the end product

design.
When the IEC inlet option is fitted (option I) together with a plastic fan grill then the end face of the PSU with the fan
grill may be operator accessible.
Note:
All outputs have functional insulation to earth, and due consideration must be given to this in the end product design.
Page 19 of 35 17138 issue 35, Sept 2019