DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
FIRE
To avoid injury from
fi
re, do not replace an existing fuse with
a larger amperage fuse. The increased current may overheat
the wiring, causing the insulation and surrounding materials
to burn.
The ignition fuse current rating must be sized for the loads utilized in each application; however,
a rating of between 5 and 10 amps is usually suf
fi
cient.
The Battery (+) fuse current rating must satisfy two criteria:
□
Must not open during normal operation
□
Must open before the MCM or CPC is damaged during a reverse battery condition
Bussmann ATC-30 and Delphi Packard Electric Systems MaxiFuse 30 amp rated fuses or
equivalent will satisfy these requirements. Acceptable blow times versus current and temperature
derating characteristics are listed in Table 3-80 and Table 3-81.
% of Rated Fuse Current
Minimum Blow Time
Maximum Blow Time
100%
100 hours
-
135%
1 minutes
30 minute
200%
6 seconds
40 seconds
Table 3-80
Fuse Current and Blow Time
Temperature
% of Rated Fuse Current
-40°C
110% max
+25°C
100%
+120°C
80% min
Table 3-81
Fuse Temperature and Current
All information subject to change without notice.
(Rev. 01/07)
3-69
7SA827 0701
Copyright © 2007 DETROIT DIESEL CORPORATION
