Section 1. Description; General - Hobart 100D20 Operation And Maintenance Manual With Illustrated Parts List

OM-2032 / Operation and Maintenance Manual
100D20 / Generator Sets
Chapter 1. Description / Operation

Section 1. Description

1. General

The Hobart generator sets covered by this manual are designed to provide power for maintenance and
startup of aircraft having 115/200-V AC, 3-phase, 400-Hz electrical systems. Five different
specifications of generator sets are covered by this manual. All generator sets in these series are
driven by a Deutz Diesel engine.
Generator sets are identified by a Specification Number which includes the Series Number and a dash
number suffix (i.e. -1, -2, etc.) . The suffix number indicates either the mounting design of the generator
set and/or one or more other major distinguishing features. Refer to the identification chart on this page
to identify a particular unit.
SPECIFICATION
6912-1
6920-1
6920-2
7002-1
Generator sets are commonly referred to as "ground power units", however, the equipment will be
identified in the manual as generator sets. Generator output power is principally used for operation of
an aircraft's electrical equipment when the on-board generators are not operating. For voltage and
current requirements, physical dimensions, weight and general output characteristics of a typical
generator set covered by this manual, refer to Figure 2.
Refer to Fig. 1 for identification of the main components . The equipment is a combination
motor-generator unit mounted on a welded steel frame. A superstructure supports the control box,
motor switch, load contactors, and other equipment. The output terminal is located to the rear at the
engine end, and the input panel is located to the front at the motor switch end. Right and left are
determined by standing at the rear and facing the machine. A sheet metal housing, or canopy, protects
electrical components. Removable panels and covers provide access for servicing and maintenance.
March 31/94 Revised
MODEL MOUNTING
100D20 5th WHEEL TRAILER
100D20P5 5th WHEEL TRAILER
100D20P5 5th WHEEL TRAILER
100D20P5 5th WHEEL TRAILER
Generator Set Identification Chart
VOLTAGE
REGULATOR
180822
430391C
430391C
430391C
Chapter 1-1
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