Battery Protection; Xtender Protection; Auxiliary Contacts - Studer XTH 3000-12 User Manual

STUDER Innotec
Xtender
with variable speed traction engines. These kinds of sources have a variable voltage according to
the available power. For this type of application, it's necessary to activate the parameter {1527}.
So, the input current limit {1107} will be regulated between zero to the programmed value, for an
input voltage whitch varies between {1309} and {1309}+{1433}

6.2.8 Battery protection

The battery is protected in all cases against deep discharge. The indicator (52) flashes once when
the battery has reached the disconnection threshold {1108} and the inverter will stop some time
after {1190}. This threshold can be dynamically corrected {1191} with an advanced algorithm that
computes automatically the battery voltage compensation in function of the instantaneous power.
This correction may also be manually fixed {1532} by setting the low voltage disconnection at full
load {1109}. These dynamic corrections can be desactivated by setting the parameter {1191} . The
inverter will stop immediately if a critically low voltage value set by the configuration {1188} is
reached. The inverter will restart automatically when the battery voltage has reached the restarting
threshold {1110}.
This restarting threshold {1110} can be automatically readjusted if the parameter {1194} is activated,
in order to better protect the battery against repeated cycling in an "almost empty " state of
charge. The restarting threshold is then incremented {1298} up to a maximum value {1195},
whenever the LVD (low voltage disconnection) is reached. The restarting threshold will be reset to
its initial value when the value of parameter {1307} is reached.
If the inverter is repeatedly {1304} encountering a low voltage disconnection in a short period
{1404}, it will stop permanently and will only start again via an operator's manual restart.

6.2.9 Xtender protection

The Xtender is protected electronically against overloads, short-circuit, overheating and reverse
current (cabling of a voltage source on AC out).
In the event of overload or short-circuit at the output, the inverter stops for some seconds and
restarts. If the inverter is repeatedly encountering this situation {1300} in a short period, it will stop
permanently and will only start again via an operator's manual control.
If the battery voltage exceeds the value set by the configuration {1121} the inverter stops and starts
up again when the voltage is less than {1110}. If the Xtender is repeatedly encountering this
situation {1303} in a short period {1403}, it will stop permanently and will only start up again via an
operator's manual control.
A battery voltage greater than 1.66 x the nominal voltage may lead to significant
damage or destroy the device.
Overheating of the Xtender, Insufficient ventilation, increased ambient temperature or obstructed
ventilation may lead to overheating of certain internal components of the unit. In this case, the
device will automatically limit its power output as long as this abnormal situation persists.
The Xtender is protected from reverse polarity by means of an external fuse installed on the battery.

6.2.10 Auxiliary contacts

The Xtender has two dry reversing contacts that are potential-free. The status of the contacts in idle
mode (deactivated) is indicated by the annotations, N.C. = normally closed and N.O. = normally
open.
Maximum contact loads: 230 Vac / 24 Vdc: 16 A or: max. 50Vdc/ 3A
These dry contacts are programmed by default for the following functions:
Contact no. 1 (AUX 1): The contact has a function of automatic start of generator (two wires). The
contact will be activated when the battery voltage is below a value, during a given time fixed by
parameters {1247/48}/{1250/51}/{1253/54} .He is also activated when reaching power threshold
during time predetermined by parameters {1258} to {1266}. The contact will be deactivated or
when the charge cycle has reached floating, or when the "Aux. 1 deactivation voltage" {1255} is
24 V.3.1.0 User manual