Customer Documentation DEV 5071
Copyright DEV Systemtechnik GmbH 2007-2017
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Before connecting (the) power cords, the DC output connections are to be
installed. There are provided two sets of DC output terminals (1a/1b, 9a/9b)
located behind plastic covers. The click-on covers are easily to be opened,
the left cover has the hinge at the bottom side, and the right cover has the
hinge on the top side of the chassis, like shown in the figure above. The
prepared DC cables are to be connected using the provided M6 nuts.
Note:
The product can be used to supply +48 V DC by connecting the DC
cables in the fashion, that the positive cable(s) run(s) to the
V+ DC output terminal(s) (1a, 9a). The negative (or ground) cable(s)
is/are to be connected the V- DC output terminal(s) (1b, 9b).
To obtain -48 V DC the polarity of the DC cables has to be inversed, i.e.
the ground cable(s) to be connected to the V+ DC output terminal(s) and
the positive cable(s) to be connected to the V- DC output terminal(s).
The grounding bolt is independent from the potential of the output
terminals and is connected to PE (Protective Earth) potential of the AC
input connectors as well as to the GND potential of the data interface
connectors.
For the connection to the M6 threaded studs of the output terminals,
double-hole lugs with 5/8" (15.875 mm) center distance and 90° cable
taps are recommended, e.g. Burndy YA2CL-2TC14-90, capable of
AWG 2 (i.e. 35 mm²) wires. As an alternative, a number of ring tongue
terminals with an inner diameter of 6 mm and a maximum outer diameter
of 14 mm can be used.
The number of cables and the diameters of the cables depend on the
current to be supplied and the length of the cables. Make sure, that an
appropriate configuration with respect to number and to diameter of the
cables is installed.
For the sum of the cable cross section per polarity with an assumed
maximum current of 120 A, a minimum of 35 mm² cross section is
according to regulations!
After the application of the DC output wiring, the AC supply connections are
to be established. The DEV 5071 can be equipped with one to four power
supply modules. Depending on the number and the location of the installed
power supply modules, the corresponding power cords are to be connected
to (8, 7, 3, & 2).
Note:
Due to the high power consumption of each power supply module, it is
highly recommended to use separately fused phases of the available
electrical outlets.
Naturally, at least one power supply module has to be installed. The
installation location can be selected freely, though it is recommended to
install the power supply modules in the order of slots (as shown in the
front view figure of chapter 3.3). Make sure, that the corresponding AC
power plugs are supplied with AC.
