Xantrex Technology XMP 2600 - Manual (Page 22)

General Information Mainframe Power Envelope
6) Sliding rails kit for rack mounting (P.N.: XMP RM)
Mainframe Power Envelope
The XMP 2600 allows for the combination of high and low power modules in the
same mainframe. Modules can be installed in the physical space available regardless
of their power rating. However, the overall power drawn from the mainframe at one
time is limited to 2.4 KW continuous, and about 2.6 KW intermittent. The main
controller continuously monitors the overall power drawn from the mainframe. It
will automatically alert the host in case of a brief violation - overall power between
2,400W and 2,600W for up to 30 seconds, and will automatically shut down the
system in case of severe violation - overall power between 2,400W and 2,600W for
more than 30 seconds, or above 2,600W.
Output Characteristics
The power modules have only current sourcing capability (no current sinking,
except for voltage down-programming transients - for faster response).
WARNING
The power modules should not be fed with an external voltage source.
In applications in which an external voltage source might be applied (such as
battery charging), an external series diode must be used in order to avoid current
sinking by the power modules. In such case, sense lines must be connected to the
module's output before the external series diode.
The power modules supply a constant voltage, till the load reaches the current
limiting value. The modules can operate in one of five different current limitation
modes. The current limitation mode can be separately selected for each module
(using either the front panel or a remote controller).
The five different current limitation modes are:
1) Constant voltage with current limited to
the Iset value, or constant current with
the voltage limited to the Vset value.
The actual working point along the V-I
range depends on the load
characteristics.
2) Constant voltage with current limit and
Foldback when current demand
increases, protecting the load from high
short circuit currents.
I
30% Iset
70% Vset
V
Vset
I
Iset
Vset
V
XMP 2600 User’s Guide rev. 1.0 3