16 GC250 Technical Manual
EAAM057608EN
3
Supply voltage Vbatt:
7...32VDC with continuous operation, protections intervention at 60
VDC.
Protection against the polarity inversion. Integrated self restoring fuse.
The operation is guaranteed during the engine start up to Vbatt=5VDC
for an undefined time.
The device identifies the plant operation at 12 or 24V to manage its
alarms and for the selection of the excitation current of the generation
of battery charge (signal D+) when powered up and whenever
OFF/RESET mode is selected.
Power consumption in
stand-by
No digital inputs active, engine instruments not connected:
40mA @ Vbatt =13.5VDC display lamp on
26mA @ Vbatt =13.5VDC display lamp off
25mA @ Vbatt =27 VDC display lamp on
16mA @ Vbatt =27 VDC display lamp off
No digital inputs active, engine instruments = 100ohm:
61mA @ Vbatt =13.5VDC display lamp on
47mA @ Vbatt =13.5VDC display lamp off
35mA @ Vbatt =27 VDC display lamp on
28mA @ Vbatt =27 VDC display lamp off
Assorbimento di corrente in
“Deep Stand-by Mode”
<3,4mA @ Vbatt =13.5VDC
<4,3mA @ Vbatt =27 VDC
(Available from HW E611215610001 and FW EB02502560104)
Maximum power consumption
in operating conditions (siren,
LCD lamp, digital inputs active;
communicating CANBUS;
analogue inputs to GND; static
outputs and +D not active)
Max 230mA @ 7 VDC
110mA @ 27 VDC
132mA @ 13.5 VDC
Electric measurements for
mains/generator set voltage
and currents:
ANALOGUE/digital conversion at 12bit; sampling frequency 10kHz.
TRMS
Measurement of the L-N phase voltages and of the L-L concatenated
voltages; measurements of the neutral voltages referred to the power
minus of the power supply of the device.
Input impedance of the voltage measurements:
> 280kohm L-N
> 560kohm L-L
>1600kohm L-GND
>1450kohm N-GND
Measurement of three currents through shunt with electric return and
CT ratio in common.
It is required the use of current transformers with a secondary current
of 5A and minimum power of 1 VA (5VA suggested). It is mandatory to
connect the return poles of the current transformers to the minus of the
power supply of the device.
Amperometric transformers must provide at least one REPEATED
(DOUBLE) insulation for the use of the device in the Overvoltage Cat.
III.
Required connection of the return poles of the amperometric
transformers (T.41) to the negative power supply of the device
.
