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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.