EAAM057608EN
GC250 Technical Manual 25
5.3
ATTENTION! In order to respect the safety rules, an isolation of the supply from
the public mains has to be guarantee in any case and must be lower than the one of a
safety transformer compliant with norm IEC61558-2-6 or equivalent
.
Connect a continuous source (usually the engine starting battery) to the terminal
T.01 GND
(minus) and to the terminal
T.02 +BATT
(
positive).
The minus terminal
T.01-GND
is the reference and the common return of the digital inputs,
outputs, current and voltage measurement
.
It must be connected to the ground
protection.
The systems that require insulation between the battery negative and the
ground protection can be used but can generate operating problems and may require
particular care, as the use of insulation current transformers for the voltage measurements of
Mains and Genset.
Although the device is protected by a self restoring internal fuse, the use of a fuse to protect
the positive line
T.02 +BATT
of supply is still necessary (F10 in the diagram).
Through the
positive input T.02 +BATT all the current supplied by the six static outputs T.03..08 and
of signal +D (T.09) flows and it is therefore necessary to pay attention to the fuse
dimension.
The device automatically acknowledges when it is powered if the genset battery nominal
voltage is 12 or 24V for managing the related logics and alarms.
Also, the
acknowledgement is carried out every time you switch to the
OFF/RESET
mode.
WARNING!
: when installing, connect the battery positive only after opening all
fuses available in the panel.
