Average Current Draw; Battery Isolator - Detroit Diesel DDEC VI Application And Installation

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Average Current Draw

The maximum average current draw is listed in Table 3-77. This information should be used
to size the alternator.
System
MCM – Engine Loads
CPC – Vehicle Loads*
* Vehicle loads are controlled by the OEMs who can best determine the total maximum current draw for
their installation.
Table 3-77 Maximum Average Current Draw
The current draw for a CPC configuration is listed in Table 3-78.
Configuration
CPC
Table 3-78 Current Draw for CPC Configuration
The current draw for a MCM is listed in Table 3-79.
Configuration
MCM
Table 3-79 Current Draw for MCM Configuration

Battery Isolator

A battery isolator is not required. However, some applications require a battery that is dedicated
to the engine and completely isolated from the rest of the vehicle. Commercially available battery
isolators can be used.
3-66
Maximum Average Current Draw
(12 V Nominal Supply)
Crank
1.0 A avg 21.0 A avg
18.0 A peak 55.0 A peak
Condition
Ignition Off
Ignition On and Engine Stopped
Condition
Ignition Off
Ignition On and Engine Stopped
7SA827 0701 Copyright © 2007 DETROIT DIESEL CORPORATION
Idle Full Load/Rated Speed
25.0 A avg
55.0 A peak
Current
<1 mA
120 mA
Current
<1 mA
400 mA
All information subject to change without notice. (Rev. 01/07)