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temperature of the heat sinks; however, the quantity of heat produced
is eventually the same, as it depends not on the capacity of the power
supply unit but the current consumption of the console. Therefore, there is
no real advantage to use a UPS10 instead of a UPS1000. The cooling load
is not different; therefore, a stronger power supply than necessary for the
particular console will not substitute appropriate and sufficient ventilation.
It will just take longer before the temperature rises.
Test of the Installation
A good method to test the installation of the power supply unit is to
check the temperature after some hours of operation. If the temperature
exceeds 60°C, cooling is insufficient. You can make a quick test just
by touching the heat sinks with your hand. If the temperature is above
60°C, you will jerk back immediately. A temperature of 50°C, which is
appropriate, gives you the feeling that it’s pretty warm but not hot.
Mains Voltage
The power supply units are available for a power voltage of 230 V or 115
V. The transformer of the unit has a tapped primary winding that makes it
possible to adapt the unit to 200, 210, 220, 230, or 240 V mains voltage
for the 230 V versions and to 100, 105, 110, 115, and 120V for the 115
V versions. It is possible to adjust the power supply exactly to the local
situation. The terminator block is accessible after the cover sheet is
removed. Special versions of the mains transformer with different taps and
special primary voltages are possible - please ask.
FOR SAFETY REASONS YOU MUST DISCONNECT THE MAINS
BEFORE OPENING THE UNIT.
PLEASE CONSIDER - HAZARDOUS VOLTAGES INSIDE THE POWER
SUPPLY ARE A RISK FOR YOUR HEALTH AND YOUR LIFE.
MAKE SURE THAT ANYTHING THAT FALLS INTO THE UNIT
(SCREWS, OR OTHER METAL PARTS, ETC.) IS REMOVED BEFORE
THE UNIT IS RECONNECTED TO THE MAINS.
THE COVER SHEETS MAY HAVE SHARP EDGES, ACT CAREFULLY
ONLY QUALIFIED PERSONNEL WITH KNOWLEDGE ABOUT
ELECTRICAL SAFETY ARE ALLOWED TO MODIFY OR REPAIR THE
POWER SUPPLY UNITS.
The terminals for the primary voltage settings are clearly marked inside
the power supply unit either on the mains transformer for the UPS1000
versions or on a separate terminal block for the UPS10 and UPS25. Make
sure that you do not change any other wiring than the tapped primary
winding.
Please consider:
Setting the mains voltage to a lower voltage tap of the transformer
increases the output voltage of the transformer and therefore the
regulation reserve. At the same time higher heat dissipation occurs. You
should do this if there are problems with a mains voltage that is too low.
In this case, remove the mains power from 230 V and connect it to 220 V
or from 115 V to 110 V respectively
Setting the mains voltage to a higher voltage tap of the transformer
decreases the output voltage of the transformer and therefore the
regulation reserve. At the same time LOWER heat dissipation occurs. You
should do this if the mains voltage is very high all the time (240 V, for
example) and the temperature of the power supply is very high. In this
case, remove the mains power from 230V and connect it to 240 V or from
115V to 120 V respectively.
The better the primary setting of the power supply unit is adapted to the
local situation, the less heat is dissipated. Depending on the stability of the
mains voltage it is possible to find an appropriate compromise between
regulation reserve and heat dissipation.
In most cases, it is not necessary that you take care about the setting
of the primary voltage. We deliver all power supply units with a default
setting of 230 V or 115V respectively. This setting will result in a good
compromise for most local situations. However, if the mains voltage is
always very high or very low, or if there are large voltage swings in the
mains power, it can be of advantage to check if another primary setting is
the better choice. Two problems might arise because of an inappropriate
setting of the primary voltage, very high heat dissipation and drop out
failures.
If the line voltage is very high, the regulation reserve of the power supply
