Xantrex Technology XFR 2800 - Manual (Page 67)

Local Operation
Using Multiple Supplies
Release 2.1 65
Using Multiple Supplies
You can operate power supplies of the SAME MODEL with outputs in series or in
parallel to obtain increased load voltage or increased current. Split supply operation
gives you two positive outputs or a positive and a negative output.
Note:If your application requires the use of isolated programming inputs, contact the
manufacturer about the optional ISOL Interface.
Configuring
Multiple
Supplies for
Series
Operation
Use series operation to obtain a single higher voltage output using two or more
supplies. Connect the negative (–) output terminal of one supply to the positive (+)
output terminal of the next supply. See Figure 3.2. The total voltage available is the
WARNING
There is a shock hazard at the load when using a power supply with a rated or
combined output greater than 40 V. To protect personnel against accidental
contact with hazardous voltages created by series connection, ensure that the
load, including connections, has no live parts which are accessible. Also ensure
that the insulation rating of the load wiring and circuitry is greater than or equal to
the maximum or combined output voltage of the power supply.
!
CAUTION
Do not connect power supplies from different manufacturers in parallel or in
series.
!
CAUTION
The remote programming inputs are internally referenced to the supply’s
negative output. Do not connect remote programming ground lines
(J2 terminals 3, 5, and 7) to the supply’s positive output.
!
CAUTION
Do not use remote sensing during series operation.
!
CAUTION
The maximum allowable sum of the output voltages is 600 Vdc.