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PAGE 20 — DCA-15SPX3 GENERATOR— PARTS & OPERATION MANUAL — REV. #2 (09/03/01)
DCA-15SPX3 — GENERAL INFORMATION
DCA-15SPX3 3 FAMILIARIZATION
Generator
The MQ Power Model DCA-15SPX3 is a 15 kW
genergener
genergener
gener
atorator
atorator
ator
that has been designed as a high quality portable (requires
a trailer for transport) power source for telecom sites, lighting
facilities, power tools, submersible pumps and other
industrial and construction machinery.
Control Panel
The control panel is provided with the following:
z
One GFCI 120 volt receptacle, 20 amp (single-phase)
z
15 kW Output Terminal (UNV)
z
Main Circuit Breaker 65 amps
z
GFCI Circuit Breaker 20 amps
z
AC Ammeter Indicator
z
AC Voltmeter Indicator
z
Output Voltage Adjustment Knob
z
Engine Warning Indicator
z
Engine Speed Control Lever
z
Hour Meter
z
Ground Terminal
Open Delta Excitation System
The DCA-15SPX3 generator is equipped with the state of
the art "
Open-DeltaOpen-Delta
Open-DeltaOpen-Delta
Open-Delta
" excitation system. The open delta
system consist of an electrically independent winding wound
among stationary windings of the AC output section.
There are four Leads: A, B, C and D. During light loads, the
power to the
AA
AA
A
utomatic utomatic
utomatic utomatic
utomatic
VV
VV
V
oltage Regulator oltage Regulator
oltage Regulator oltage Regulator
oltage Regulator
(AVR) is supplied
from the leads of B & C, when loads increase, the AVR
switches and accepts power from leads A & D. The output
of leads A & D increase proportionally with load. This has
the effect of adding the voltages of each phase to provide
better voltage response during heavy loads.
The connections of the AVR to the AC output windings are
for the sole purpose of sensing only. No power is required
from these windings.
The open-delta design provides virtually unlimited excitation
current due to its independent power supply offering
maximum motor starting capabilities. The excitation does
not have a "
fixed ceilingfixed ceiling
fixed ceilingfixed ceiling
fixed ceiling
" and responds according the
demands of the required load.
Engine
The DCA-15SPX3 is powered by a 4-cylinder KUBOTA Model
V2203
diesel diesel
diesel diesel
diesel
engine. This engine is designed to meet every
performance requirement for the generator. Reference Table
5, page 19 for engine specifications.
In keeping with MQ Power's policy of constantly improving
its products, the specifications quoted herein are subject to
change without prior notice.
The basic controls and indicators for the DCA-15SPX3
generator are addressed on the following pages.