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P O W E R I N G T E C H N O L O G Y
Document No. M00035-MAN rev. 3a
aspiro1u_m35-man-rev3a-0417.indd
2.4 System Components
The Aspiro system is delivered with all components mounted according to the ordered
configuration. The main components are described below and in later chapters of the manual.
There are 2 versions of Aspiro shelf available depending on the value of battery current shunt
used: 20 A or 80 A.
CAUTION
Low Power Shelf version (20 A version) provides better resolution for battery
current reading and it is suitable for low power applications with maximum battery charge
current less than 5A.
2.4.1 System Controller
The Aspiro power system can be controlled by the ACC Extended or PCC controller. The
description and operation of these controllers is covered in separate manuals which are
available at:
ACC Extended:
http://www.unipowerco.com/pdf/acc-man.pdf
http://www.unipowerco.com/pdf/pcc-man.pdf
2.4.2 DC Distribution
DC Distribution consists of maximum 1 battery and 4 load breakers available in a variety
of sizes.
The distribution unit is designed for switching the battery and load on and off.
The battery and load breakers are supervised by measuring the voltage drop across each
breaker. In the case of load breakers, those which are not connected to any load will not
cause a breaker alarm even if they are left open.
A battery fuse alarm is generated after the battery voltage drops below a certain level,
depending on the actual battery capacity and condition.
Low Voltage Disconnect (LVD)
The system is equipped with a low voltage battery disconnect which prevents the
batteries from deep discharging, thus prolonging the battery life. The disconnect requires
a detected mains failure at the supervision unit (controller).
If disconnection occurs, the batteries will not supply power to the load until they have
been recharged to a set voltage level, which can be adjusted by the user.
If disconnection occurs, the batteries will be reconnected when the mains supply returns.
