PREVOST X3-45 Multiplex User Manual

Repair and Testing Instructions for T1 Page 7
Alternator 0120 689 552 Edition 001
All rights rest with Robert Bosch Corp, including patent rights. All rights of use of reproduction and publication rest with R. B. Corp.
UA/ASV 04.12.98 T1ALTFinal.DOC
3 Specifications
3.1 Electrical Test Specifications
Interference suppression capacitor 1.8 … 2.6 lF (microfarad)
Load current less than/equal to 10A 27.6 … 28.4 V (volts, regulated)
Damping Resistance 3.1 … 3.5 kW (kilohms)
Stator Resistance 0.036 W (-0/+10%) T1 (RL) 28V70/140A
Rotor Resistance 7.5 W (-0/+10%) T1 (RL) 28V70/140A
Power Output Test
Alternator Speed (RPM) Load Current -
Inductive (A)
Test Duration
(Min)
1500 76 30T1 (RL) 28V70/140 A
6000 136 10
Following completion of the output test, allow alternator to run at 7000 rpm for one minute.
Oscilloscope Pattern
This image represents a properly functioning
alternator. The D.C. voltage produced has a
small harmonic wave.
Small spikes may be superimposed on the
oscilloscope screen if the voltage regulator
is regulating. Applying a load to the
alternator output terminals can turn off the
regulator.
In order to be able to compare oscilloscope
images, the oscilloscope so the pattern fits
between two vertical 10x divisions.
Figure 1 Normal Oscilloscope Pattern

PREVOST X3-45 Multiplex Specifications

General

Length	45 ft
Width	102 in
Engine	Volvo D13
Horsepower	500 hp
GVWR	54, 000 lbs
Height	146 in
Sleeping Capacity	Varies based on floor plan
Water Capacity	Varies based on floor plan