Testing policy, Intended uses, Restricted uses – Winco WT3000H/C User Manual
Page 5: Unit capabilities, Generator connections, Starting electric motors
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TESTING POLICY
Before any generator is shipped from the factory, it
is fully checked for performance. The generator is
loaded to its full capacity, and the voltage, current
and frequency are carefully checked.
Rated output of the generator is based on engineer-
ing tests of typical units, and is subject to and limited
by, the temperature, altitude, fuel, and other condi-
tions specified by the manufacturer of the applicable
engines.
INTENDED USES
This engine generator set has been designed
primarily for portable heavy duty commercial use.
A 120 volt duplex receptacle is provided in the end
cover to plug in your loads (lights, portable tools, and
small appliances).
This portable unit requires large quantities of fresh
air for cooling the engine and generator. For safety,
long life and adequate performance, these units
should never be run in small compartments without
positive fresh air flow.
RESTRICTED USES
DO NOT remove from the cradle assembly. Re-
moval of the generator from the cradle assembly
may cause excessive vibration and damage to the
engine-generator set.
DO NOT install and operate this generator in a small
compartment., i.e. generator compartments of ve-
hicles, motor homes or travel trailers. These com-
partments will not allow enough free flow of fresh
air to reach the engine generator set for cooling and
will cause the unit to overheat, damaging both the
engine and generator. Small compartments will also
develop hot spots where there is very little air flow
and may cause a fire.
PLEASE NOTE There are rd party companies
making enclosures for generators that have been
properly engineered. The use of these rd party
enclosures is acceptable as long as they have been
certified and meet current code.
DO NOT attempt to operate at 50 cycles. These
units are designed and governed to operate at 60
cycles only.
UNIT CAPABILITIES
GENERATOR CONNECTIONS
WT000 - Generator is rated at 000 watt surge and
2500 watts continuous. Generator full output can
be drawn from the 120 volt GFCI duplex receptacle
mounted on the end of the generator.
STARTING ELECTRIC MOTORS
Electric motors require much more current (amps) to
start them than to run them. Some motors, par-
ticularly low cost split-phase motors, are very hard
to start and require 5 to 7 times as much starting
current as running current. Capacitor motors are
easier to start and usually require 2 to 4 times as
much starting current as running current. Repulsion
Induction motors are the easiest to start and require
only 1 1/2 to 2 1/2 times as much starting as running
current.
Most fractional horsepower motors take about the
same amount of current to run them whether they
are Repulsion Induction (RI), Capacitor (Cap), or
Split-Phase (SP) type.
If the electric motor is connected to a hard starting
load such as an air compressor, it will require more
starting current. If it is connected to a light load,
or no load such as a power saw, it will require less
starting current. The exact requirement will also
vary with the brand or design of the motor.
Self-exciting generators respond to severe overload-
ing differently than utility power. When overloaded,
the engine is not able to supply enough power to
bring the electric motor up to operating speed. The
generator responds with high initial starting current,
but the engine speed drops sharply. The overload
may stall the engine. If allowed to operate at very
low speeds, the electric motor starting winding will
burn out in a short time.
CAUTION: EQUIPMENT DAMAGE
RUNNING THE GENERATOR SET UNDER
THESE CONDITIONS MAY RESULT IN DAMAGE
TO THE GENERATOR STATOR AS WELL AS THE
MOTOR WINDING.
The heavy surge of current required for starting
motors is required for only an instant. The genera-
tor will not be damaged if it can bring the motor up
to speed in a few seconds of time. If difficulty is
experienced in starting motors, turn all other electri-
cal loads off and if possible reduce the load on the
electric motor.