General Electric GE Bulletin No. 4775 : Type KS Single-Phase Induction Motors Motors

... .

. . . ...

Genera/Alatric

Sch

coenectaay

SMALL

August,

|

FieldofApplication

ruggedness

istics,

generally

use
There
for

IQIO

Owingtoits

the

squirrel

recognized as

on

alternating

are,

however,

some

reasonitbecomes

TYPE

extreme

and

KS–SINGLE-PHASE

simplicity,

high

electrical

cage

polyphase

the

current

many

MOTOR

mechanical

character

ideal

power

localities

necessary

by

motor
type

circuits.

Copyright,

General

for

where

for

tady,

DEPARTMENT

1910

Electric

Company

INDUCTION

individual

pecially

comparabletoshunt,

is

pound

A

brief

which

fitted.

Company

N.Y.

MOTORS

operating

adapted;

wound,

KS

the

direct

outline followsofthe

and

RI

C_2.6%.

Bulletin

characteristics,ises

KS

being

and

the

current

motors

RItocom

motors.

are

particularly

33–7

No.

4775

somewhat

duty

to

TYPE

KS-4-3

the

central

currenttoits

station

patrons.

H.P.--1800

to

supply
To

meet

R.P.M.--220

single-phase

the

power

VOLT

requirementsofestablishmentssosituated,

the

General

distinct

respectively
former

this

bulletin.

KS

of

applicationtowhich

NoTE.—The

but

this

publication.

Electric

typesofsingle-phase

as

type

being

and

RI

motors

prices

£

does

oth

prices

the

KS

specifically

and

datainthis

not

guarantee,

and

data

Company

have

offers

motors,

and

the

RI,

described

particular

each,byreason

publication

their

are

subjecttochange

are

correctness,

two

known

the

fields

for

without

nor

Fig.

1

MOTOR

WITH

Type

KS

The

KS

speed

service

starting
in

in

of

the

generalisadaptedtodrive

and

belted

speed

with

torque.

convenienceofcustomers,

doesithold

notice.

itself

TYPECR119

APPLICATION

motorissuitable

does

not

machinery

lightormoderate

responsible

where

exceed 140

and

every

for

STARTER

full

any

for

constant

load

torque

per

cent,

all

requiring

effortismadetoavoid

errorsoromissions

constant

starting

and

geared

error,

in this

at

GENERAL

ELECTRIC

COMPANY

4775-2

Type

RI

TypeKS—

RI

motors

(See

Bulletin

can

constantorvariable

Constant

operating

tion
example:
chines,
switch,
is

usedtoopen

Speed

all

machines

STATOROFKS-4-3

under

air

house

full

compressors,

pumps,

pressure

regulator,orsimilar

and

matically.

Variable

for

machinery

tain

speed
constant
blowers,

Where
speed
byaspecial

are

brought

torque,

fans,

desired

RI

Speed

whose

variations

etc.

cither

motors

stator

outtoa

switch.

Single

be

Phase

No.

4675)

furnished

speed.

RI

motors

are

demanding

Fig.

2

HP.

ROTOR

or

overload

refrigerating

etc.,orwhereafloat

close

the

circuit

RI

operation

against

such

motors

as

are

demands

approximately

printing

constantorvariable

may

be

made

winding,inwhich

four-pole,

double-throw

Induction

either

suitable

accelcra-

torque;

device

auto

designed

presses,

reversible

the

leads

Motors

r.p.m.,

for

built

in

struction.

for

is

known

in

the

KS

phase

windings
progressivelyinthe
laminations
qualityofsoft
assembly
visionismadeinall
end

laminations

the

windings,

or

for

stator

for

care

and

ma

of

all

General
collectively
finished

The

cage

cer

high

sizes

from1to

the

well-known

The

as

the

familiar

stators

skeleton

have"symmetrical"three-

with

are

made

steel,

in

the

owing

other

reasons.

construction

attention

Electric

make

product.

KS

rotorisof

resistance

10

h.p.

riveted

15

h.p.,

1200

Type

IS

andisfurnished

frame

STATOR

form

wound

slotted

up

of

punchings.

carefully

field

frame.

framestoprevent

from

flaring

to

magnetic

The

bears

evidence

usedinthe

apparatus,

for

the

superiorityofthe

ROTOR

the

smooth

type

consistingofanum-

inclusive,

frame

r.p.m.

construction.

coils

the

very

insulated

Ample

out

and

vibration

entire

detail

manufacture

and

core

are

con

motor

placed

The

best

before

pro

the

chafing

of

of

that

which

squirrel

GENERAL

KS

motors

their

polyphase

designed

efficiency,
ingatonce
cal

and

electrical
material
grade,

thereby

terrupted

All

standard

motors

from1to15h.p.

DESCRIPTION

CONSTRUCTION

are

similarinappearance

prototypes

with

the

viewofobtainingahigh

resistance

the

reactance

least

complicationinmechani

construction,

and

workmanship
assuring

service.

KS

60

and

motor,

combined

of

long

life

cycle

inclusive,

OF

have

and

1800

KS

possess

the

and

to

been

with

best

unin

r.p.m.

1200

STATOR

OF

berofsoft
assembled
being

slotted

the

bar

winding

KS-4-3

H.P.

-1800

steel

discs

uponasteel

near

the
which

Fig.

3

-220

VOLT

R.P.M.-

carefully

sleeve,

the

MOTOR

aligned

steel

circumferencetoretain

extends

beyond

and

discs

the

GENERAL

ELECTRIC

COMPANY

r

d

core

at

either

connected

The

rotating
supported
lining

bearing
assembly
showninFig.

Rotor
meansofa
same

mannerasthe

motor

rheostat.

The

rotor, in starting,

the

shaft

until

approximately

rated

speed

picked

up by

centrifugal

outer

shell,

brass

friction

nently

keyedtothe

end

to

heavy

memberofthe

upon

the

interposed

sleeveofthe

4.

acceleration

starting

by

meansofa

is

reached.

the

automatic

clutch,

keyed

band

ture.

The
frame
cipal
on

the
nently
with
key

clutch

motor

parts;

shaft,

it.

and

pulleyoftheIS15 h.p.

(see

Fig.5)consistsoftwo

oneanouter

the

otherafriction

attached

A

set

to

standard

screwtothe

c<%?

&£0

PARTSOFCENTIFRUGAL

A-Clutch
Outer

Clutch

Body

Shoulditbecome
pulley or
pulley
rotor
the
the
both

holes

may

has
friction
surfaceofthe

parts

♦In

ordertoprolong

being

provided

TYPEISMOTORS

B-Friction

Shell

with

substituteapinion

readily

approximately

bandofthe clutch

outer

to

engage

for

this

whereitis

short

circuiting

shaftbyan

between

rotor

and

is

accomplished

box

operatedinmuch

well-known

revolves

frictionless

75

per

cent

The

actionofa

which

rigidly

directlytothe

of

the

clutchisperma

pulley

the

endofthe

shell

freetorevolve

shaft

pulleyisfastened

sleeveofthe

Fig.

4

CLUTCH

Pulley

Pulley

necessary

be

Band

Sleeve

removed.

PULLEY

C-Adjusting

E-Solid

to

attained

expands

shell,

thereby

gradually

the

lifeofthe

purpose

near

the

permanently

rings.

KS

motor

Arguto

the

direct

the

shaft

current

plug
steel

freely

bearing

of

normal

load

is

then

simple

engages

shaft.

arma

skeleton

prin

band

perma

and

rotating

by

shell.

FOR

USE

Spring
Removable

change

the

standard
When
full

speed

against

causing

and

finally

clutch,

oil

should

shell

rim.

TypeKS—

Single-Phase

to

rotateasone

hubisfitted

is

only

requiring

BEARING

as

by

the

Mechanically

to

protect
provide
bearings.

the

centrally

Bearing

on

an

F-Internal

Exploded

prising

and

held
degrees
allowed

PARTLY

Mechanism

View
PartsDand

in

apart;

for

Above

either

The

installation.

a

Interchangeable
nishedofspecial
sition

possessesanexceedingly

of

friction

and

acteristics.

ON

D-

the

the

self-oiling,
into

oil
taps
the

bearing.

the

well

oil

may

KS
called
single

with

wells

fitted

for

mounting

furnishes

easilybedrawn

motors
"unified"

adjusting
tighteningorloosening the
fully

machined

base

insure

for beltorchain

occasionallybeapplied

Induction

unified

with

an

occasional

rigid

stator

seated

brackets

ASSEMBLED

place

Fig. s

Comprising

Fig.

E ShowninExploded

by

ready

floor,

BEARINGS

bearing

bearing

unusually

KS

bearings
solid

with

the

A

plugatthe

an

BASE

are

all
cast iron
screw

slotted

correct

drives.

between

Motors

member.

anti-friction

lubrication.*

BRACKETS
bearing

windings

brackets

and

supports

arc

CLUTCH

G-Outer

four

Parts

A, B,C,Shown

Shell

belts

PULLEY

and

View Above

adjustment

side

wall

linings

metal.

This

low

good

wearing

areofliberal

feeding

suitable

rings

oil

gaugeoneither

lowest

outlet

supplied

off

from

when

with

sub-base

and

follower
belt.

guidesofthe

and

stable

the

friction

band

477o-3

The

shell

bearing,

serve

also

for

the

removable

Pulley

Com

spaced

is

thus

or

ceiling

are

fur

compo

co-efficient

char

size,

dipping

gauges

and

side of

point

which

the

necessary.

the

so-

having

nut

for

The

care

unified

alignment

and

the

ihell,

to

in

90

of

a

GENERAL

ELECTRIC

COMPANY

4775-4

The

frame

pulley,
the

usual

nished

TypeKS—

DISASSEMBLED

clutch

KS

motors

pinion

manner.

with

Single-Phase

PULLEY

armature

permits

or

coupling

all

KS

Induction

Fig.

CLUTCH

6

ARMATURE

constructionofriveted

the

Paper

keying

to

pulleys

the

of either
shaft
are

motors.

Motors

OF TYPEKSMOTOR

characteristics.
chaser,

in

fur

when

rubber
terminal

bushingstosuitable

connectors.

CHARACTERISTICS
KS

motors

a

starting
imately
full

load

of

full

load

EFFICIENCY

POWER

An

inspectionofthe
acteristic
will

readily

motors

have

will

torqueofapprox

150

per

with

250

per

current.

AND

FACTOR

curve

show

been

(Page

that the

designed

properlyinregardtothese

Itisdesirable

selecting

motors,

for

the

to

develop

cent

cent

char

pur

procure

of

6)

STARTING

The

with

Both

CR119

KS

resistance

starting

box

motorsisshowninFig.

and

reactance
connectedincircuitatthe
The

switch
return
protecting
tionstothe

Whereitis
motor
starting
is

essentially

with

the

is

closed
equivalent,
cutinand
combined

arm

is

provided

and

no-voltage

the

motor

from

current supply.

desired

to

automatically,aType

rheostat

exception

by

may

be

the

same

as

that

when

means

the

out

relay,

ofafloat

resistance

automaticallybymeansofa

contactor

dashpot.

LEADS

KS

the

terminal

frame

leads are

before

being

firmly

brought

BOX

usually

furnished

1.
units are

timeofstarting.

with

release,

sudden

start

used.

and
CR

The

the

hand-starter

the

line

effectively

interrup

stop the

124

CR

switch

reactance

and

pneumatic

fastened

out

through

spring

self-

124

circuit

or

its

coil

within

is

EXHAUST

Fig.

FAN

SINGLE-PHASE

DRIVEN

7

MOTOR

BY TYPE

KS

GENERAL

ELECTRIC

COMPANY

those

having

in

ordertoreduce

toaminimum,

as

while

high

bills

point

sential
of
nectedtothe

the
and
may
wi
havingatendencytode
stroy

Fig.

8

tion,
income

TEMPERATURE

GUARANTEES

When

operating

continuouslyatfull
loadoncircuitsofthe
quency,
40
two

cent

h.p.,
volts,
for

a
procedureisnot
motors
on
frequency
over10per

satisfactory

the

degrees

C.

hoursora

canbecarried

VOLTAGE

The

standard

inclusive,

(iO

the

larger

110

volt

will

circuits

taken

All

standard

temperature

An

overloadof25

momentary

without

AND

motors

are

cycles.

motorsis220

winding

generally

operateina

where

the

collectively

cent

aboveorbelow

KS

manner
withatemperature
ceeding50degrees

Motors

for

40

C.

cycle

nishedonorder.

TRANSFORMERS

KS

motors
lighting
upon

the

the

circuitisproperly
former
kw.

capacity

per

can

be

circuits

voltage

without

regulation,

providedofnot

h.p.ofconnected

efficiencyaspossible,

for

metered

from

the

central station

of

view

it

that

only

high

power

factorbecon

lines,sothat
generating
distributing

not

th

wattless

the

and

be

apparatus

system

overloaded

currents

voltage

from

which

canbederived.

AND

OVERLOAD

correct

rise

voltage

will

not

per cent

overloadof50

excessive

heating.

FREQUENCY

from1h.p.

wound

The

can

for

standard

volts,

be

substituted,

110

and

although

recommended.

satisfactory

range

of

voltage

does

not

normal.

motors

riseatfull

will

on

50

circuits

operated

operateina

cycle

load

can

from

appreciable

assuming

laid

out

andatrans

less

load.

TypeKS—

current

is

es

motors

regula

no

rated

and

fre

exceed

for

per

to

or

220

winding

this

KS

manner

and

vary

circuits
not

ex

be

fur

regular

effect

that

than

Enclosed
vided
of

suitable

numbers:

MOTORS

H.P.

1
1

2
2

3

3
5

5

~lA

10
15

TYPES

PHASE,

Sheets

5

plete
request.
frames
therefrom, the

Type

Type

KS
KS

KS
KS

KS
KS

KS
KS

KS
KS

KS
KS

KS
IS

1

KS

Single-Phase

CUT-OUTS

cartridge

for

KS

motors:

cut-outs

Volts

Cat.

110

220

110

220

110

220
110

220

220
220
220

KS

AND

INDUCTION

giving

lineofKS

In

order

with

the

following

KEY

TO

DIMENSION

KS

Motors,

CLASSIFICATION

Poles

6
4

6

4

6
6

4
6

4
6

4
6

4
6
4

Induction

Motors

AND

fuses

should

the

followingisa

and

fuses

FUSES

Amps.

No.

IS,

60

25

15

45
25

70
35

1005536801

70
100
150

CYCLE,

34956
34954

34960
34956

34966
34958

34970
34962

34966
34970
34976

MOTORS

DIMENSIONS

specific

motors

motor

dimensionsofcom

willbegladly

to

identify

ratings

keyispublished:

SHEETS

Single-Phase,60Cycle

H.P.

10
10

15
15

1
1

2
214

3

3
5

5
7V2

7*A

Speed

1200
1800

1200
1800

1200
1200

1800
1200

1800
1200

1800
1200

1800
1200
1800

FUSES

with

FUSE

Cat.

No.

34367
34367

34376
34367

36801
34376

34376
36801

36801
34971

the

obtainable

4775-5

be pro

list

catalogue

B

lOCKS

No.

Required

\

2

i

SINGLE-

sent

on

different

Frame

Number

140

122
160

140
180

181
160

201
180

220
201

221
220

11

221

GENERAL

ELECTRIC

COMPANY

4775–6

Type

KS-Single-Phase

CHARACTERISTIC

Induction

CURWES-SINGLE-PHASE

Motors

Fig.

9

INDUCTION

MOTORS

GENERAL

ELECTRIC

COMPANY

s*

A-Bearing
B-Oil

Well

C-Oil

Well

D-Tap

for
E-Dust-proof
F-Oil

Gauge
G-Bracket
H-Bearing
I-Oil

Ring

J-Lining

name

Screw

Note.—Order

plate.

Bracket

Cover
Plug

Oil

Gauge

Bearing

Bolts
Lining

DISASSEMBLED

Cap

partsbyname,

VIEW

OF TYPEKS2

K-Stator
L-Field
M-Terminal
N-Terminal
O-Rotor
P-Radial
Q-Clutch
R-Shaft
S-Arguto
T-Felt

omitting

TypeKS—

Frame

Coils

Board

leads

Fan

Key
Plug

Washer

reference

Fig.

10

and

Bearing

letter,

Single-Phase

H.P.-1800

windings

and

connectors

and

R.P.M.-220

U-Key
V-Friction
W-Clutch
X-Clutch
Y-Paper
Z-Pulley
A'-Sliding
B'-Float
C'-Guide

D'-Belt

give

serial

Induction

VOLT

for

numberofmotorasshown

Motors

MOTOR

Clutch

Band

Adjusting

Shell

Pulley

Key

Base

Bolt

Washer

Tightener

4775-7

ShellofClutch

Spring

Bolt

on

UNIVERSITYOFMICHIGAN

||||||

|

39.015

08007

3151

|

GENERAL

PRINCIPAL

BOSTON,

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allas,
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London,E.C.,

Ltd.,
Toronto,

Building.

York,

England.

Ontario,

N.Y.

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