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DAILY MCA2014 4x4 ‒ BODYBUILDER INSTRUCTIONS
ELECTRONIC SUB-SYSTEMS
5.4 ELECTRICAL SYSTEM: CURRENT INTERVENTIONS AND DRAWS
– Printed 603.95.994 – 1 Ed. - Base 05/2015
The maximum excursion allowed for transient voltage with appliances powered at 12 V is +60 V, measured at the terminals of the
artificial network (L.I.S.N.) if tested at the bench; otherwise, if tested on the vehicle, the excursion must be recorded in the most
accessible location close to the disruptive device.
Note
Devices powered at 12 V be immune to interferences such as negative spikes of -300 V, positive spikes of +100 V, bursts of +/-
150 V.
They must operate correctly during the phase when voltage drops to 5 V for 40 ms and to 0 V for 2 ms.
They must also resist the load dump phenomena up to 40 V.
The maximum radiated emission levels measured at the bench and the levels of conducted emissions generated by devices and also
by 12 V power supplies are given in the following table:
Table 5.7 - Electromagnetic emission levels
Type of
emis-
sion
Type of
trans-
ducer
Type of
disturb-
ance
Type
of de-
tector
Frequency range and limits acceptable in dBμV/m
Unit of
meas-
ure-
ment
150-
300
kHz
0.53-
2
MHz
5.9-
6.2
MHz
30-
54
MHz
68-87
MHz
mobile
ser-
vices
only
76-108
MHz
broad-
cast
only
142-
175
MHz
380-
512
MHz
820-
960
MHz
radiated
Aerial at
a
distance
of 1
metre
Broad-
band
almost
peak
63 54 35 35 24 24 24 31 37
dBμV/mradiated
Broad-
band
peak 76 67 48 48 37 37 37 44 50
radiated
Narrow
band
peak 41 34 34 34 24 30 24 31 37
conduit
LISN
50 Ω
5 μH
0.11 μF
Broad-
band
almost
peak
80 66 52 52 36 36
Not ap-
plicable
dBμV
conduit
Broad-
band
peak 93 79 65 65 49 49
conduit
Narrow
band
peak 70 50 45 40 30 36
Use electrical/electronic equipment in compliance with the UNECE directive on electromagnetic compatibility.
Only components with certified approval and with mark "e” are allowed: the "CE” marking is not sufficient.
By way of example, the mark prescribed by the current UNECE 10R3 on electromagnetic compatibility in the automotive field is
shown below:
191312
Figure 27
a ≥ 6 mm
The values in the table are only to be considered respected if the device comes form "IVECO Spare Parts” or it has been certified
as per the international standards ISO, CISPR, VDE etc.
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