MULTIQUIP GA-3.6HZ, Operating And Parts Manual

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GA-3.6H SERIES A.C. GENERATORS — OPERATION & PARTS MANUAL — REV. #0 (11/01/05) — PAGE 13
GA-3.6H Series — GENERAL INFORMATION
GA-3.6H Series Familiarzation
Generator
The Multiquip GA-3.6H series generators have been designed
as a portable dual purpose power source for 60 Hz (single
phase) lighting facilities, power tools, submersible pumps
and other industrial and construction machinery.
These generators are mounted on rubber vibration isolators
that have a steel base backplate which is attached to the
protective steel pipe carrying frame. The protective carrying
frame is made of steel tubing and fully wraps around the
generators to protect against damage. See Figures 2A
through 2E for the basic controls and indicators for the GA-
3.6H Series generators.
These portable generators are supplied with a electrical
control box . To reduce vibration caused by the engine, the
control box is also placed on rubber isolators.
Control Box
The control box is provided with the following:
■
NEMA L14-20R, twist-lock receptacle,125/250V, 20 amps.
■
NEMA L5-20R, twist-lock receptacle, 125V, 20 amps.
■
NEMA L6-30R, twist-lock receptacle, 250V, 30 amps.
(GA-3.6HZ only)
■
NEMA L5-30R, twist-lock receptacle, 125V, 30 amps.
■
NEMA 5-20R, GFCI duplex receptacle,125V, 20 amps
(GA-3.6HA has two).
■
13.5 amp main circuit breaker.
■
AC Voltmeter
■
G.F.C.I. Ground Terminal (GA-3.6HZ only)
■
Full Power Switch
■
Idle Control Switch
■
Operation Switch
Excitation System
The GA-3.6H series generators use a magnet attached to a
flywheel to produce AC voltage from a lamp coil beneath
the flywheel. As the magnetic passes the coil it produces
approximately 19-22 AC volts.
This voltage (19-22 VAC) is then sent to the control box that
contains three rectifying diodes:
z
Excitation (diode 1)
z
Battery (diode 2)
z
Slow Down (diode 3)
The AC voltage will pass through the excitation diode that
converts the voltage to DC power.
This DC power is then sent to the excitation windings housed
within the main windings commonly called the "stator".
This voltage is then transferred into the rotor through
induction. The rotor contains two diodes within it which rectify
the DC voltage and send it out through the main windings,
as AC voltage.
Alternator
The alternator, a brushless revolving-field type, is
permanently aligned to the engine through rigid coupling.
Engine
These generators are powered by a 8.0 HP, air-cooled, 4-
stroke
HONDA gasoline engine. Reference Table 2, for
engine specifications.
Before connecting this generators to any building’s
electrical system, a licensed electrician must install an
isolation (transfer) switch.
Serious injury or death may result without this transfer
switch.
F
WARNING WARNING
WARNING WARNING
WARNING