American Rotary AUL 208-240V Manuale d'uso - Pagina 15

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8.0 IMPORTANT TERMS

TRANSFORMER

A piece of electrical equipment that is used to increase or decrease electrical voltage .

DISCONNECT

A mechanical switch that is used to break a connection between an electrical wire or line to provide isolation

from the power source to a device .

CIRCUIT BREAKER

Commonly referred to as a breaker, is an automatically operated electrical switch which will protect an electrical

circuit from damage caused by excess current generally caused by an overload or short circuit on the line .

Breakers are available in different sizes all based on the applications .

LOAD CENTER

A panel that is used to house multiple breakers which will also serve the purpose of providing power distribution

and isolation for the machine loads .

ELECTRIC GENERATOR/IDLER

The rotary portion of the phase converter that is custom designed to produce the manufactured leg of a three-

phase system that is powered from a single-phase system .

CONTROL PANEL

The main panel as part of the three-phase converter . This is where all of the electrical connections are made,

where the phase converter is turned on and off, and the panel that houses the start and run circuits for the

phase converter .

CAPACITOR

Stores electrical energy to assist with start loads and voltage balancing . An American Rotary phase converter

will have two sets of capacitors, each serving a separate purpose . You will have start capacitors and run

capacitors . Start capacitors are only engaged during the starting of the converter and during the start-up of the

load whereas the run capacitors are engaged at all times when the converter is running .

CONTACTOR

An electrically controlled or magnetically controlled switch used to engage an electrical circuit . This is used

simply to complete an electrical connection and should not be considered a disconnect .

GROUND

Provides an alternate route for electrical current to flow back to ground or Earth in the event of a problem in the

wiring system .

DELTA POWER

In simple terms in reference to a three-phase system, it would be a four-wire system (three hot wires and a

ground) . With a delta system, the power is connected in a triangle . When measuring a delta system leg to

ground you will end up with a high leg . Delta systems should always be measured leg to leg when checking for

voltage balance as you will get similar readings leg to leg .

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