General Electric GE Bulletin No. 4406 : Induction Motors Motors

C3693QL

7.2.

General

POWER

April,

on
in
of

1905

The

General

the

marketanew
which
the

are

motors

Electric

lineofinduction

embraced

heretofore

E/affic

AND

INDUCTION

Companyisplacing

all

the

best

built.

This

MINING

by

General

motors

features

line

Cºrright,

Electric

of

DEPARTMENT

roos

company

MOTORS

in

the

accompanying
construction
stator
the

laminations

air,

the

Cºmpa

Bulletin

illustration

the

outer

edgesoft

are

directly

weight

of

the

motor

motorsisbuiltinthe

FormKand

the

squirrel

ture

types,

FormL,signifying

cage

and

with

allofwhich

generalisfamiliar.
elementisthe

difference
interchangeable.

This

tifiedbyits

sameinthe

beinginthe

SKELETON

designofmotor

skeleton

35

H.P..

INDUCTION

two

forms

known

respectively

the

resistanceinarma

the

trade

The

fieldorstationary

two

forms, the

armatures

FRAME

canbeeasily

which

are

iden

typeofframeasshown

MOTOR

as

tageously

improved.
of

frame,

in

Electric

been

ciatedinthese

machines,

sacrificedbythis

A

feature

cast iron

rails

for

belt

possibilityoftrouble

reduced,

Mechanical

prominent

SLIDING

which

motorsisthe

sliding

tightening.

and

the

ventil

strength

features

have

not

formofc

BASE

willbegr

baseinthe

duetothe

in

in

subs

pl

This

GENERAL

ELECTRIC

COMPANY"

4406–2

pulled
the
is
With
motor
after

off

belt

vertical

the
frame

the
impossible
without
base

can
ported
With

from

the

Induction

the

especially

or

new

maybesecurely

belt

for
loosening
alsobeused

the

Motors

rails

when

necessarytorun

tight,orwhen

with

a

vertical

design

of belt

the

component.

tightener

boltedtothe

tensionisadjusted,sothat

the

motor

the

side

to

leave

bolts.

when

the

wallorfrom

the

This

motorissup

the

ceiling.

with

drive

the

base

it is

base

sliding

superseded typesofmotorsadiffer

motor
without
has
power

plete

shields

current

can be

re-adjustment.

no

appreciable
factor,orheatingofthe
instructions

are

furnished

COMPENSATORS

For

equal

of squirrel

run

foramuch

for

MOTORS

starting

cage

longer

An

uneven

effect

on

the

motor.

adjusting

with each

FOR

torques

motor.

FORM

the

motorsisinherently

period

air

gap

efficiency,

Com

the

end

K

starting

PARTS

ent

rail

was

suspension.
nished

with

hundred

ADJUSTABLE

Motors
above
shields
in

the

are

for

bearings.

economical

required

This

all

horse-power

of thirty-five

provided with

adjusting

designofmotor

for

side

sliding

base

motorsoffrom

inclusive.

END

SHIELDS

horse-power

adjustable

the

air

gap

Sinceitis

necessary

with

factor,tohaveacomparatively

ance

between

in

the

bearings

With

no

the

rotor,

when

the

dangerofthe
the

adjustable

canbeused

adjusting

clearanceonthe

the

stator

must

and

be

carefully

methodofadjusting

new

bearing

wear

becomes

rotor

shield,

foramuch

the

air

sleeves

such

striking

however,
longer

gapsothat

bottomorwearing

rotor,

the

the

period.

OF

FORMLINDUCTION

wallorceiling

will

be

fur

one

to

two

and

end

with

the

wear

for

an

high

power

small

clear

the

wear

observed.

position

are

that

field.

the

necessary

there

With

bearings

Also

by

of

is

thereismore

side,

the

MOTOR

greater

ture

than

type.

thatofthe

Therefore

of74horse-power

pensators

starting

by

the

inarecently

FORM

very

In the

motors

inclusive,

resistance
grids,
with

ture

Form L

sparkingtoa
large

are

generally

currentonthe

The

starting

General

Electric

issued

L

STARTING

The

designofstarting

much

improved

old

starting

of

from

the

brushes

slide

thus

givingalarge

comparatively

has

been

carried

motors,

minimum

numberofshort

resistanceinarma

with

Form

and

above,

used

line.

compensator

Companyisdescribed

Bulletinonthis

RESISTANCE

resistance

in this

lineofmotors.

resistances

five

to

fifteen

short

directly

on

numberofcontacts

no

sparking.

through

and

will

on

the

thus

account

circuiting

K

motors

starting

to

com

reduce

manufactured

subject.

has

been

for

use

with

horse-power

circuiting

the

resistance

This

fea

whole

line

reduce

of

points,

and

the

the

of

the

the

GENERAL

ELECTRIC

COMPANY

the

comparatively

ance

cut

outateach

five

to

fifty
furnished
while
edgewise
The
torque
Increased
torque
out
creasing
to

the

with

larger

motors

wound

resistanceisdesignedtogive

at

starting

starting

canbeobtainedbygradually

the

resistance,
approximatelyindirect

torque.

small

point.

horse-power

resistancesofcast

will

German

with

torque

the

amount

Motorsoffrom

inclusive

be

provided

silver

full

starting

up

resistances.

load

to

current

of

resist

will

be

iron

grids,

with

full

load

current.

maximum

cutting

in

proportion

MOTORS

Heretofore

have

not

been

In

the

future

motors
thirty

for

horse-power

HEATING

Allofthese

carry

their
temperature
25%

overload

ture

rise

not

WOUND

motors

listed

it is

this

potential,

motors

rated

load

rise

not

for

two

exceeding

Induction

under

the

FOR

wound

fifty

intention

Motors

2080

for

2080

horse-power.

to

starting

size,

inclusive.

GUARANTEES

are

guaranteed

continuously

exceeding

40°

hours withatempera

55°

C.

4406–3

VOLTS

volts

furnish

with

with a

C.,

the

to

and

mill.i.

GENERAL

PRINCIPAL

BOSTON,

YORK,

NEW
Syracuse,

Burr

allo,

PHILADELPHIA,

Baltimore,
Pittsburg,
ATLANTA,

Orleans,

New

CINCINNAT1,

Cleveland,

Nashville,
CHICAGO,

Detroit,

Louis,

St.

Oklahoma

Dallas,

Texas,

HELENA,

Minneapolis,

DENVER,

Lake

salt

FRANCISCO,

SAN

Los

Angeles,

LAND,

Poºr

Seattle,

ELECTRIC

OFFICES,

SALES

MASS.,84State

N.

N.

Mich.,

Mo.,

Most

Wash.

N.

Y.,

Y.,

Mo.,

PA.,

GA.,

La.,

OHIO,

Ohio,

TENN.
IL.L.,

Wainwright

City,

awa,

MINN,
COLO.
City,

CAL.

ORE.

44

Y.,
Sedgwick,

Ellicott

PA.,

Continental

1500

Building.

Park

Empire

1001,

Citizens

Room

Monadnock

1434–35

Okla.,

Scollard

Power

Phoenix

Kittredge

Utah,

C.A.L.,

H.

Worcester

Alaska

COMPANY

SCHENECTADY,

OFFICEs.

Street.

Street.

Broad

Andrews

Square

Building.

South

218–226

Trust

Building.

1005

1003,

Bldg.,

Building.

Cole

22,

Building.

Building.

Culbertson

Block.

Building.
Building.

Crossley

Hellman

Building.

Fifth

Building.

Building.

Dooly

Building.

Perin

Majestic

408

Building.

417-418

W.

Building.

&

Kennedy

Eleventh

Building.

Hennen

and

Building.

Building.

Building.

Y.

N.

Building
Race

Bldg.

St.

Sts.

Foreign

schenectady,

London

all

For

Canadian

DEPARTMENT,

Oprice,

Canadian

General

N.Y.,

Cannon

83

Business.

FOREIGN.

and

44

Street,

Electric

Broads.

London,

Company

New

E.

Ltd.

Toronto,

York,

C.

N.

England.

Ontario.

Y.

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