Oltronix RACPAC 150, 300, 600 and 1000 is a line of
low voltage, high power, regulated DC power supplies.
There is no derating in any part of their voltage or
current ranges. They are fully protected against
overload and overvoltage.
The model number, e, g. B32-20R is a code for the
performance of the power supply. The first letter
indicates the approximate stability for + 10 % line
A < 0, 01 %
B = 0,01 - 0,03 %
C = 0, 03 - 0, 1 %
D > 0, 1 %
The first group of figures in the model number states
the maximum output voltage. The figure after the dash
shows the maximum output current of the power supply.
"R" after the model numer indicates a rack model.
All RACPAC power supplies are equipped with dual range
volt-and ammeter for simultaneous reading of output
voltage and current.
A calibrated current limit control is incorporated.
It serves the triple duty: to protect the load and
the power supply from excessive current and to make
it possible to use the power supply as a constant
The power supplies include facilities for resistance
programming, voltage programming, remote sensing and
Programming operation gives the possibility to control
the output voltage by an external resistor or voltage.
The remote sensing circuit allows the power supply
to regulate the voltage across the load instead of
the voltage at the output terminals. This compensates
voltage drops in long cables to the load.
The modulation mode allows the output voltage to be
controlled by an external low power signal.
The terminals for operating the power supply are
available both from binding posts on the front panel
and the 14-prong plug at the rear. Modulation and
voltage programming are possible through the rear
If higher voltage or current is desired, two or more
units can be connected in series, or in parallel.
Then programming and remote sensing are still possible.