General Electric GE Bulletin No. 4858 : Single Phase Motors, Type RI Repulse Induction Motors

Bulletin

General

ElectricCompany,

Schenectady,

New

York

GENERAL

ELECTRIC

COMPANY

4858-2

Single-Phase

THEORY

The

leading

current

series
operating
torque,
speed

this

regulation

TYPERI4

REPULSION

confined

pressure

the

under
torque,

blowers,

motor

the

load
commutator
being

distinctly
current
the
service,

which

prototype,

requirements

this

maintains
once been
values

as

increasing

speed
acteristics
rent

compound

portionofseries

The

RI,
however,
shunt

characteristics;

with

increaseoftorque

In

the

straight

necessary

characteristics

wound

throughawide

type

has,

and

POLEHH.P.

INDUCTION

either

to

fixed

ortovarying

controlling

operator's

characteristics

type

alternating

analogoustothatofits

the design

of

service

good

brought

uptospeed,

at
decreases;
approaching

motor,

field

or

repulsion

gives

this

combinationofscries

repulsion

starting

torque,adirect
armatureisplacedina
byanalternating
through
angular
improve

brushes

relationtothe

the

current

set

operating

Motors,

OF

motor

Type

DESIGN

of

are

well

RI

the

direct

known;

rangeofspeed

however,

its

useisconsequently

FORMG1800

loads

device

guidance.

no

MOTOR

like

loads

is

The

of

current

inherent

R.P.M.

fans or

where

constantly

speed,

the

series

motor

direct

fails

to

meet

constant

demanding

regulation

satisfactory

in

other

thoseofthe

having

speed

after

with

words,

the

power

a

motor

having

torque

efficiency

char
direct
usual

winding.

induction

that

is,alimited

with

decreaseinspeed.

motor,

speed

motor,tosecure the

current

magnetic

and

field

short

excited

circuited

withapredetermined

stator.

To

further

characteristics

the

plain
brushes
placedat90
short

and

brushes).The
to

the
armature
and

time
generated
correcting
voltage,

power-factoratfull
closely
of

load,
strict
permits,
involved,
values.

repulsion

(i.e.,

the

electrical

circuiting

main

field

an

electromotive

phase

by

the

phase

thus

approaching

the

compensating

the

maximum

where

slight

The

compensated

motorasecond

compensating

degrees

brushes

compensating

and

with

the

main

field.

relation

giving

approximately

load

unity

no-load
varying
increase

orRImotorispracticallyaninduction
capable
synchronous

torque

well

RI
over
short
not

of

operation

and

high-powcr-factoratall

as

excellent

motor

since

has

the

circuited

inductively

either

speed,

possessing

efficiency

no

tendencytosparkorflash

armature

by

the

placedinthe

cur
pro

and

of

TYPERI4

and

have

their

generated
mercial
due

to

of

the

sparking

POLE1HP.

REPULSION

FORMG1800

INDUCTION

consequently

voltage.

exploitation

poor

commutationissufficient

Type

RI'sabsolute

with

difficulties.

brushes)

from

(i.e.,

the

fieldisauxiliary

impresses

forceinangular

electromotive

In

addition

between

and

current

power-factors

over a wider

field

servestore

speed

speed

over

service

synchronous

repulsion

above

heavy

constants.

coils

successively

energy

brushes

magnetic

MOTOR

only

to

commutate

Three

yearsofcom

not

one

complaint

immunity

set

the

main

energy

upon

the

force

and

unity

range

and

also

induction

motor

or

below

starting

loads

The

are

field

R.P.M.

proof

from

of

is

to

is

as

GENERAL

ELECTRIC

COMPANY

POWER-FACTOR

The

importance

relation

of
alternating
upon

both

true
current

generator

of

to

regulationisdeserving
consideration
in

which
between
example,

induction
that

any

value

does
mechanical
since

all
manifest
energy
by

the

to

prime
voltage
generators
tation to
partofthe
unavailable
revenue.

with

all

an

inherent

electromotive

arc

lamps,

motors.

While

decreaseinpower-factor

not

demand

input,

internal

thisisnot

generator

themselves

produce

this

mover.

regulation

of

requiring

compensate

station'srated

and

consequently

The

poor

steam

power-factor
apparent
circuit)

capacity

of

the

power

and

and

most

electrical

phase

static

difference

force

and

transformers

the

beliefiscurrent

any

strictly

and

as

heat;

heat

being

Apart

from

alternating

abnormal

for

low

power-factor,

outputisrendered

produces

economyofunder-

(i.e.,

in

its

voltage

careful

apparatus

current,

from

increase

line

the

wasted

supplied

the

current

field

the

an

effect

exists

for

and

unity

of

true,

losses

poor

exci

no

Single-Phase

having
a
might
ators

inherently

combined

be

are

kilowatt

TYPERI4

a

factor

the

therefore,

With

RI

the

horse

General

Electric

three-quarter

power-factor

cent.

At

should notbeless

Motors,

high

factor as

expected.

seldom

designedtocarry

loadatless

POLESHP.

REPULSION

net

INDUCTION

available

considerably

motorsofmixed

power

rangeasmanufacturedbythe

Company,

and

full

should

half

load,

than85per

Type

RI

lagging

Since

than80per

current

low

as

50

standard

cent.

FORMG1800

MOTOR

generator

reduced.

sizes

and

operating

load,

the

combined

equalorexceed

this

combined

cent.

4858-3

values,

per

their

power-

R.P.M.

output

between

90

cent.

gener

rated

is,

within

plant

per

value

TYPERI4

REPULSION

loaded

enginesisalsoaserious

wastage.

Careful

investigations
power-factor
duction
sizes
between

motor

and

70

supplying

POLE2HP.

INDUCTION

of industrial

drive

changing

and

80

current

FORMG1800

have

with

load

per

cent.

to

underloaded

R.P.M.

MOTOR

sourceoffuel

shown
plants
units

cycles

using

of

averages

With

that

various

plants

motors

STARTING

Single-phase
service
develop
to

accelerate
large
for
sugarorlaundry
presses;
counter
belting,

lubrication,

the

in

The
average
found

and

by

directly

must

sufficient

inertia

example,

group

shafts

poor

starting

type

to

vary

200

per

closing

TORQUE

motors

be

able,

turning

from

standstill

or

excessive

meat

centrifugals;

driven

with

condition

etc.

torque

of

industrial

approximately

cent.

The

the

AND

to

render

where

momentortorque

loads

static

choppers

machines

possibly

line

and

of

alignment

demanded

drives

RI

motor,ifstarted

switch,

CURRENT

efficient

requisite,

possessing

friction;

grinders;
heavy
running

between

over

will

punch

from

for
will

develop

to

taut

and

the

be

100

GENERAL

ELECTRIC

COMPANY

4858-4

from
currentinlike

The
Type
tary
full
motors,

voltage,

Single-Phase

250

additional

RI

value

load

valueasthe

assuming

TYPERI6

REPULSION

attain

to

300

proportion.

for

starting

and

falls

POLE7MH.P.

full
standstillinfrom
motors
of
made
the
is
are

h.p.
rheostat

are

ordinarily

normal

for

full

load

special

percentageofstarting to

excessive.

not

rating;

Asageneral

required

up

from2to5h.p.

is

optional,
degreeofcaretobe
voltage
preferably
sizes,
cuits

on
descent

regulation.

be usedonthe

especially

arc

combined.

If

motors

the

same

of 2 h.p.

secondaries,

lampsorwhereitis

where

essentialtominimize
the

use

ofarheostat

torque

ofRImotors,
and
of

Example:

with

Duetothe

full

load,

other

Two

225

per

exceedingly

ampere

are

single-phase

single-phase

Motors,

per

cent.

current

possesses

off

motor

normal

INDUCTION

speed

two

fused

current,

service

to

Type

of

required

only

very

rapidly
accelerates.

frequency

FORMG1200

MOTOR

under

to

five

seconds.

for

200

exception

conditions,

full

rule,

starting

and

including

RI

torque

momen

down

R.P.M.

load

per

load

by

torque

the use

dependent-

upon

exercisedinmaintaining

Starting

boxes should

7.5,10and15h.p.

light

and

power

and

larger

current

will

cent.

full

values,

markedly

induction

are

installed

with

arcorincan

otherwise

deemed

rushatstarting,

secure

high

full

load

current.

power-factor

bothatstarting

below

motors.

motors

are

with

the

to

RI

and

from

RI

cent.

being

where

boxes
the

of

the

cir

load

those

com

pared,
a
motor

factor
which

load

require

each

full

load

(Type

"A"

motor,

of

we
tested
Both

full

motors

torque
Motor
will
"B"

"A"

requireonthis

(with

36.5

clearly

indicate
determine
consider

rated3h.p.,

efficiencyof77

RI),

hasatested

98

per

will

call

load

power-factorof80

are

guaranteedtodevelop"full

with234

(with98per

80

per

amps.

that

the

preferable

true

ampere
centageofstartingtofull
the

case

at

hand,

the

same

torque

current requiredbymotor

APPLICATIONS

Type
and
use
external

may

of

RI

motors

be

thrown

rheostat,

starting

2
a

TYPERI6

particularly
ating

machines,

or

other

POLE15H.P.

REPULSION

suitable

air

similar
switchorpressure
or

open

the

supply

220

volts,

and

having

per

cent.;

the

which

'we

will

designate

full

load

power-

cent.

with

the

times

basis

cent.

The

the

values

motor

The

second motor,

"B"

motor, has a

full

load

cent.

power-factor)

31.5

amps.

power-factor)

example

proper

motor

should

rather

load

current.

"A"

will

87

per

cent.ofthe

per

current.

Motor

should

method

always

than

develop

cent.

"B."

are

entirely

on

the

clutch

coupling

device.

FORMG1200

INDUCTION

for

operating

compressors,

apparatus

line

RI

MOTOR

where

automatic

without

or

motors

R.P.M.

refriger

house

a

other

pumps

regulatorisusedtoclose

circuit.

first

as

"

will

to

per

In

the

are

float

GENERAL

ELECTRIC

COMPANY

RI

motors
should
switch
lineisresumed.
can

result

switch

the

power

remain

by

when

will

notbeinjuredinthe

service

closed

fail

when

Furthermore,

opening

the

motorisat

or

the

closing

any

cycleofaccelerationordeceleration.

The

RI

motor

heavy

or

not

overloads

near

standstill!

attainable
operatingatfull
since

upon

will

deceleratetothe
matic
therefore,
and
tacts

switch

become

and

exist

otherwise

safely

permits

without

This

with

speedasinduction

excessive

overload

point

opens.

where

unstable,

A

suchamotor

burning

causing

sparking,

invaluable

single-phase

where

critical

trouble.

and

the

power

no

pointinits

carrying

down

feature

the

the
point
will

its

switch

slightest

motor

on

the

damage

the

line

very

to

motors

motors,

motor

auto

may,

"hunt"

con

all

the

the

air.

tiontoaffording

or

repairing,

foragiven

is

Single-Phase

stator

laminae

The

riveted

ready

reduces

output

TYPERIMOTOR

DAY

Motors,

are

directly

frame

accessibility for

both

and

speed.

DRIVING

DOUGH

MIXER

Type

RI

4858-5

exposed

designinaddi

cleaning

weight

NO.

The

and

advan-

2

to

bulk

RI
and
form.

and

the

since

most

TYPERIy,

H.P.

PEERLESS

GENERAL

motorsinall
universally

Riveted

compact

sizes
known

frame

mechanical

effective

the

outeraswellasthe

MOTOR

OPERATING

JOBBER

DESCRIPTION

are

builtinthe

"riveted

design

combines

construction

natural

heat

inner

unique

frame"

rigid

with

radiation,

edges

of

tages

just

without

enumerated

in

the

least

have

sacrificing

efficiencyorquality.

RI

The

field

of

slotted

flanges
winding

each

lated.

(depending
forms
winding
therewith.

laminations

and

wound

of

the

coil

being

The

second,orcompensating

usually

either

the

oraseparate

When
receiveajapan
dering
dampness
to
steam,

the

insulation

or

be

subjected

ortoexcessive

moisture.

FIELD

WINDINGS

the

RI

assembled

with

two

distributed

taped

on

center

and

the

portionofthe

winding

completed,

and

baking
impervioustoordinary

When

to

acid

fumes,

humidity,
shouldbespecified,sothat
givenanextra

dipping.

been

secured

strength,

motor

consists of

between

windings,amain

concentric type,
separately

winding

size

frame

used),

concentric

stator

treatment

the

motor

vapor

such

the

field

may

end

insu

main

coils

ren

is
from
duty

be

GENERAL

ELECTRIC

COMPANY

4858-6

Single-Phase

UNWOUND

RIVETED

FIELD

FRAME

Motors,

OF TYPERI3

Type

MOTOR

RI

H.P.

RI

TypeRIarmatures

sheet

steel

laminationsinwhich
are
shaft.
close

punched

fitting

By

before

the

useofsharp

keys
workmanship,
from

irregularities

might

injure
nationsofRI
h.p.

are

sizes

employing

by

retaining

RI

armature

all

coils

the

motors

builtupon

rings

being

ARMATURES

are

builtupof

being

assembled
and

and

general

the

coil

slots

or projecting points

coil

insulation.

up

to

and

the

shaft,

cast

iron

spiders

and

cast iron

windingisof

form

wound,

selected

the

coil

accurate

excellence

are

made

The

including

the

remaining

heldinplace

core

heads.

the

scries

carefully

slots

on

dies,

which

lami

type,

insu-

the

of

free

5

UNWOUND

FREQUENCY

Standard
arranged
cycle

windings

All

constant

four

terminal

for

RI

2.5

and

motors

and

being

variable

leads
abilityofoperation
cuits.
these
made
double
wires
will
the
does
below

By

connecting

terminalsinmultiple,

adaptable

this

are

connected

operate

sum

of

not

exceed10per

for

pressure

satisfactorily

voltage

normal.

ARMATUREOFTYPERI3

AND

VOLTAGE

have

polar

groupings

GO

cycle

operation;

furnishedonspecial

speed

motors
permitting
on

110or220

adjacent

110

the

in

series.

and

frequency

cent.

volt

four

on

RI

circuits

either

interchange-

volt

pairs

motors

service;

leading
RI

variation

above

40

order.

have

cir

of

are

for

in

motors

where

or

HP.

RIVETED

WOUND

RIVETED

FRAME

MOTOR

FIELDOFTYPERI3

FRAME

MOTOR

1>

H.P.

GENERAL

ELECTRIC

COMPANY

lated

and

interchangeable

the

same

rating
being
are

placed

retained
oneateach
laminated

and

in

by

two

opposite

armature

voltage.

the

insulated

heavy

extremityofthe

core
testedasassembledonthe
armature
strain
or

short
into
special
insulation

rotating
proof

being

finally

subjectedtoa

testtoeliminate

circuits

after

commercial

compound

and

mechanical

possibilityofgrounds

the

service.

materially

memberinadditiontorendering

against

ordinary

dampnessormoisture.

ARMATURE

The

high

RI

motors

allow

ample

or

torsional

are

provided
diameter
machined

grade

provide

strains.

changings.

outsideofthe

machinery

sufficient

safety factor

Filletsofliberal

to distribute

Accurate

on

armatures

The

binding

body.

core,

the

motor

has

Treatment

improves

rigidity

SHAFTS

steel

cross

against

strains

pulley

coils

core

bands,

central

All

coils

completed

dielectric

been

with a

of

shafts of

section

all

rotative

radius

at

grooves

end

bearing

of

after

slots

are

put

the
the

to

all

are

amountofoil,
the

lubricant

The
heads
commutator
method

it

Single-Phase

and

when

single

arm

permits

ready

and

brush

of

interchangeably

Motors,

with

taps

Type

for

RI

drawing

required.

constructionofthe

access to

gearing.

all

partsofthe

The

spacing

1,858-7

off

bearing

standard

the

end

COMPLETED

linings

and

prevent

RI

bearing

metal

havingalow
ample
faces,
the

all

The

are

cross

carefully

lubricant,

insure

reservoirsofRI

equipped

RIVETED

insideofthe

oil

creepage.

linings

section.

heavy

immunity

with

ARMATURE

FRAME

TYPERI3

MOTOR

bearing

housing

BEARINGS

are

made

fromaspecial

coefficientoffriction

Generous

cut

channelingtodistribute

oil

rings

from

motors1h.p.

gauges

bearing

and

deep

bearing

to

indicate

and

HP.

and

sur

oil

wells,

troubles

larger,

the

to

CAST

BRUSH-HOLDER

head

retaining
motor
for

frametobe

wall or
standard
provided
and

allow

either

floor,

RI

Type

equal

in

types

of
motors.
best

grade
copper,
The

commutator
selected
lowest
resistance

YOKE WITH

5

H.P.RIMOTOR

bolts

is

shifted90or

ceiling
sliding
with

suspension,asdesired.

base

float

boltstoproperly

adjustmentofthe

wallorceiling

COMMUTATOR

RIGGING

RI

commutators

designtothose

General

The

hard

Electric

segments

drawn

liberalinwearing

bars

mica

slottedinordertoobtain

coefficient

between

of

friction

brushes

BRUSHES

used,

allowing

180

degrees

frameisslotted,

motor

feet

installation.

AND

BRUSH

areinevery

used

direct

are

made
high
surface

are

insulated

and

and

respect

in

the

current

from

conductivity

and

electrical

commutator

FOR

the

The

and

secure

for

latest

the

depth.

with

the

GENERAL

ELECTRIC

COMPANY

4858-8

Single-Phase

Motors,

HAND

Type

JOINTER

RI

DRIVENBYTYPERIMOTOR

CENTRIFUGAL

PUMP

DIRECT

DRIVEN

BY TYPERIMOTOR

GENERAL

ELECTRIC

COMPANY

TYPERI1/4

WHITNEY

H.P.

MOTOR,

ONE-GALLON

GEARED

FREEZER

TO

Single-Phase

Motors,

Type

RI

4858-9

TYPERIMOTOR

TURBINE

DRIVING

CLEANER

SPENCER

TYPERI1/2

H.P.

MOTOR

OPERATING

GOLDING

JOBBER

GENERAL

ELECTRIC

COMPANY

4858-10
surface.

treatment
lubrication
vice.
used.

Two

RI
moulded
position,

MOULDED

reinforced
imbedded
iron

yokes

3

to 15

h.p.

The

brush-holder

and

cast
ensuring
the

studs

strains.

DIRECTION

Standard

to

run
mutator
simply
the
the

necessarytointerchange

compensating

brush-holder

Single-Phase

Brushes

which
under

types

motors

yoke

of

are

used

furnishes
normal
of

brush-holder

from

special

Motors,

employingaspecial

conditions

3<tto2

subjectedtohydraulic

BRUSH-HOLDER

1

HP.RIMOTOR

byacast

in

the

are

moulded

used

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on

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all

studsofboth

yokes

freedom

due

counter-clockwise

end.

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from

to

motors

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brushes

possible

shrinkage

OF

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are

facing

clockwise

and

yoke.

Type

RI

ample

natural

yoke

h.p.

employ

insulating

pressure,

YOKE

FOR

section
structure.
RI

motors

the

moulded

special

features

loosening

or

vibratory

so

connected

the

rotation,itis

the

leads

slightly

of

ser

are

com

and

ring,
Cast

from

com

shift

a

At
motors
an

auxiliary
degrees
nected
auxiliary
the

terminal

with

the

switch.

of

the

two

is

changed
reversal
shifting
holder

RI

MOTORS

RI

motors

REVERSIBLE

a

slight

can

be

furnished

reversing

from

the

in

series

winding

board

main

field

By

reversing

windings, the

inasimpler

were

the

radial

yoke.

can

RI

additional

main

field

with

it.

are

brought

and

winding,

the

secured

position of

FOR

VARIABLE

be

furnished

MOTORS

cost,

by

the

winding

winding

Leads

connected,

relative

directionofrotation

manner

by

trollerstogiveavariationofapproximately
per

cent.

below

be

remembered

and

load
phase
rent

motor

as

with

powerisreduced

drop

of

operation
to

work

full

load

In

care

as

i.e.,

the

should

to

the

poweratfull

For

example:

service

synchronous

thatRImotors

characteristics

wound

the

with

above

rotor

armature

systemsofcontrol
in direct

in

speed,

must

at

satisfactory

presuppose

all

times

torque.
applications
should

horse

compare

be

power

taken

demanding

ratingofthe

as

nearly

speedofthe

Ifa5

havingamaximum

type

h.p.

speed.

analogoustothe

or

the

control.

proportiontothe

variable

that

against

variable speed,

to

"motor

as

driven

motorisapplied

demand

reversible

addition

spaced

and

con

from

this

out

through

together

toareversing

polarity

thanifthe

mechanically

the

brush-

SPEED

with con

40

It

should

possess

speed

three-

direct

cur

Therefore,

the

horse

speed

the

motor

approximately

closely;"

driving

possible

unit

with

machine.

to

of

only

of

90

is

COMMUTATOROFTYPERI3

H.P.

MOTOR

GENERAL

ELECTRIC

COMPANY

3

h.p.,

the

torque

decelerate

the

driving
trolleristhrown
Careinthis
for

special

In

not

applicable

boring
vice requires
horse
normal.

respect

resistances.

TYPE

general,

variable

to

millsorsimilar

adjustable

power

As

at

already
amountofvariable
imately
of
machines,
meetsawide

fans,

constant

or blowers,

etc.,

fieldofapplication.

TEMPERATURE

GUARANTEES

All

Type

rated

and
tinuously
surrounding

RI

guaranteedtocarry

withatemperature

air

load

will

all

to

CR-172

such

the

will

speed

speeds

stated,

not be

unit

lower

obviate

CONTROLLER

machines

tools

speed

sufficient

when

the

speed

points.

the

necessity

AND

RI

motors

as

where

below

and

the

constant

or

whenacertain

speedisrequiredatapprox

torque,

the

motors

not

suchasthe

printing

RI

motor

AND

are

to

exceed

driving

presses,

binding

successfully

OVERLOAD

conservatively

full

load

rise

above

40

deg.

to

con

RESISTANCE

are

lathes,

ser

above

con

the

C,

Single-Phase

a 25

per

cent.

rise

nottoexceed
overloadof50
out

excessive

Motors,

overload

55

per

cent,

heating

deg.;ora

damageorunsatisfactory

FOR3AND5HP.RIMOTORS

S>

mm&SJ^

TYPE

CR-172

In

line

with
securing
motorsof1
r.p.m.
efficient

and

fan

1

AND2HP.RIMOTORS

proper

h.p.

above,

mountedonthe

the

internal

1200

are

CONTROLLER

most

r.p.m.

fitted

Type

RI

for

two

hours with

momentary

maybecarried

or

otherwise

operation.

FOR

modern

methods

ventilation,

and2h.p.

witharigid

armature

4858-11

with

causing

for
RI

1800

and

shaft.

Note.—Horse
functionofhorse
radiusofthe
"A."
"A"
has
horse
original10horse

Should

valueasbefore,itis

also

been

powerisdesiredatsuch

power,

armature.

the

reduced

powerisproportional

being

definedasthe

Example:Amotor

speed

nowbereducedto500

obvious

one

power

outputistobemaintained.

half.

(since
If,onthe

reduced

to

the

pullordragatthe

develops10h.p.

horse

speed,

productoftorque

r.p.m.,orone

power

other

hand,

it is

runningat1000

equals

the

evident

half

limes

times

the

normal,

torque

surfaceofthe

torque

speedisreduced

that

speed.

armature

r.p.m.

withatorque

the

speed) that

torque

one
must

Torque

half,

aloneisa

multipliedbythe

the

be

value

remaining

horse

but

the

doubledifthe

power

same

of
at

GENERAL

ELECTRIC

COMPANY

4858-12

This
over

Single-Phase

fan

suppliesaconstant

and

about
temperature
addingtothe

motor

windings.

To

aidinthe

Motors,

Type

flowofcool

the

windings,atonce

rise,

improving

lifeofthe

operation

insulation

dissipationofentrained

RI

air

reducing

and

and

the

heat

in

the

stator
outatregular
incomplete
ventilating
of

the

reducing

field
ducts

stationary

operating

laminae,

intervals

structure).

extending

member

temperatures.

each

discisblanked

(as

shownincut
These

the

assist

numerous

entire

length

materially

of

in

A

Field
Field

B

Line

C

Tube

I)

Compensating

E

Terminal

F

Brush

G

Brush-holder

H

Carbon

I

Brush

J

Short

K

Armature

L

Commutator

M
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Fan

0

winding

terminal

terminal

yoke

stud

circuit'connection

board

brush

terminal

PARTS

OF

RI

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Q
R

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w

X
V

z

AA
BB
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MOTORS

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well

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plugs

Oil

gauge
Bearing
Oil

ring
Pulley
Pulley
Commutator

Pulley
Base
Float
Belt

end

shield

cover

lining

set

screw

bolts

tightener

end

end

screw

shield

shield

holding

bolts

GENERAL

ELECTRIC

COMPANY

1

1

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1600R.P.

100

Percent

Curves

M.

Motor

Load

125

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175

GENERAL

ELECTRIC

COMPANY

4858-14

Single-Phase

Motors,

CONNECTIONSOFTYPERISINGLE-PHASE

Type

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UNIVERSITYOFMICHIGAN

3

9015

08036

9047

GENERAL

BOSTON,
Springfield,
Providence.R.I

NEW

Rochester,N.Y

Syracuse,

Buffalo.N.Y

New

PHILADELPHIA.

Baltimore,

Charlotte,N.C

Charleston.

Erie,

Pittsburg.

Richmond,

ATLANTA,

Birmingham,

Macon,

New

CINCINNATI.

Columbus,

Cleveland,

Chattanooga,

Memphis,

Nashville,

Indianapolis,
Louisville,

CHICAGO,

Detroit.
St.

Kansas

Butte,

Minneapolis,

DENVER,

Boise,
Salt
SAN
Los

Portland,
Seattle.
Spokane.

For

For

YORK,N.Y

Haven,

Pa

Ga.

Orleans,

Mich

Louis,

City.

Montana

Idaho

Lake

FRANCISCO.

Angeles.

Ore

Wash

Wash.

Texas

General

Dallas.

El

Paso,

Houston.

Oklahoma

all

Canadian

Canadian

MASS

Mass

N. Y.

Conn

Md

W. Va

Pa

Va

GA

Ala

La

Ohio
Ohio

Tenn
Tenn.
Tenn

Ind

Ky.

ILL

Mo

Mo

Minn

COLO

City,

Cal

and

Electric

Tex

Oklahoma

ELECTRIC

PRINCIPAL

PA

OHIO

.

Utah

Cal

.... ....

CompanyofTexas.

Tex.

Tex

City,

Schenectady,N.Y.,
New

York,N.Y.,30Church

London,E.C,

Business

General

OFFICES,

SALES

(Address

.... ....

Business

Okla.

FOREIGN

England,83Cannon

refer

to

Electric

Co.,

SCHENECTADY.N.Y.

OFFICES

nearest

office)

Charleston

Columbus

Majestic

Building

refer

to

. .

SALES

OFFICES

Foreign

Dept.

St.

Ltd..

Toronto.

COMPANY

Mutual

Union

30

Granite

Post-Standard

Ellicott

Witherspoon

Electrical

National

Marine

National

Mutual
Empire

Brown-Marx

Maison-Blanche
Provident

Savings&Trust

Citizens

Randolph

Stahlman

Traction

Terminal

Paul

Monadnock

(OfficeofSoliciting

Wainwright

Dwight

Electric

410

First

.

ChamberofCommerce

St.

Ont.

Third

National

Newhouse

Nevada

124.

West

Electric
Colman
Paulsen

Lamar&Caruth

Chronicle

Insurance

81

State

Life

Trust

Church

Square

Malley

Trust

Bank
Bank

Oliver

Grand

Bank

James

Jones

Ave.,

Bank

Idaho

Bank

Fourth

Street
Building
Building

Street
Building
Building
Building
Building
Building

Building
Building
Building
Building
Building
Building
Building
Building
Building
Building
Building
Building
Building
Building
Building
Building
Building
Building
Building

Agent)
Building
Building
Building

North
Building
Building
Building
Building

Street
Building
Building
Building

Sts.
Building
Building

Building

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