Specifications are subject to change without notice
Information
GENERAL INFORMATION
TECHNICAL DATA
TYPICAL SPEED TORQUE CURVES
Capacitor Start/Induction Run
! SINGLE PHASE GENERAL PURPOSE DESIGN WITH AN
ELECTROLYTIC CAPACITOR IN SERIES WITH THE START WINDING
OFFERING MAXIMUM STARTING TORQUE PER AMPERE
! CENTRIFUGAL SWITCH REMOVES THE AUXILIARY WINDING
AND CAPACITOR WHEN THE MOTOR APPROACHES FULL
LOAD SPEED 4HE DESIGN IS A HEAVY DUTY UNIT WHICH
HAS APPROXIMATELY
OF FULL LOAD STARTING
TORQUE #OMMON APPLICATIONS INCLUDE COMPRESSORS
PUMPS CONVEYORS AND OTHER hHARD TO STARTv
APPLICATIONS
Capacitor Start/Capacitor Run
4HIS DESIGN HAS TWO CAPACITORS OF DIFFERENT VALUES ! CENTRIFUGAL SWITCH IS
USED TO REMOVE THE ELECTROLYTIC CAPACITOR WHEN THE MOTOR APPROACHES FULL
LOAD SPEED ! SECOND RUN CAPACITOR REMAINS IN SERIES WITH THE AUXILIARY
WINDING DURING FULL LOAD OPERATION 4HIS TYPE OF DESIGN HAS LOWER FULL LOAD
AMPS AS A RESULT OF THE RUN CAPACITOR AND IS CONSEQUENTLY USED ON MOST
HIGHER HORSEPOWER SINGLE PHASE MOTORS
Permanent Split Capacitor (PSC)
4HIS DESIGN HAS AN AUXILIARY WINDING WITH A hRUNv
CAPACITOR BUT UNLIKE THE CAPACITOR START INDUCTION
RUN MOTOR THE CAPACITOR AND AUXILIARY WINDING
REMAIN IN THE CIRCUIT UNDER RUNNING CONDITIONS
4HERE IS NO CENTRIFUGAL SWITCH ON THIS TYPE MOTOR
! PERMANENT SPLIT CAPACITOR DESIGN HAS LOW
STARTING TORQUE AND LOW STARTING CURRENT 4HEY ARE
GENERALLY USED ON DIRECT DRIVE FANS AND BLOWERS
4HEY CAN ALSO BE DESIGNED FOR HIGHER STARTING
TORQUE AND INTERMITTENT APPLICATIONS WHERE RAPID
REVERSING IS DESIRED
MOTOR SELECTION
%LECTRIC MOTORS ARE THE WORKHORSES OF INDUSTRY -ANY APPLICATIONS EXIST
WHERE MORE THAN ONE MOTOR CAN BE USED AND OR THE EXACT REPLACEMENT IS
NOT AVAILABLE ,%%3/. MAKES EVERY EFFORT TO MAXIMIZE INTERCHANGEABILITY
MECHANICALLY AND ELECTRICALLY WHERE COMPROMISE DOES NOT INTERFERE WITH
RELIABILITY AND SAFETY STANDARDS )F YOU ARE NOT CERTAIN OF A REPLACEMENT
CONDITION CONTACT ANY ,%%3/. !UTHORIZED $ISTRIBUTOR OR THE ,%%3/.
$ISTRICT 3ALES /FFICE
SELECTION
)DENTIFYING A MOTOR FOR REPLACEMENT PURPOSES OR SPECIFYING A MOTOR FOR NEW
APPLICATIONS CAN BE DONE EASILY IF THE FOLLOWING INFORMATION IS KNOWN
.AMEPLATE $ATA
%LECTRICAL AND 0ERFORMANCE #HARACTERISTICS
-OTOR 4YPE
-ECHANICAL #ONSTRUCTION
NAMEPLATE DATA
.AMEPLATE DATA IS THE MOST IMPORTANT FIRST STEP IN DETERMINING MOTOR
REPLACEMENT -UCH OF THE INFORMATION NEEDED CAN GENERALLY BE OBTAINED
FROM THE NAMEPLATE OF THE MOTOR TO BE REPLACED 4AKE TIME TO RECORD ALL THE
NAMEPLATE INFORMATION BECAUSE IT CAN SAVE TIME AVOID CONFUSION AND
-)3!00,)#!4)/.
MOTOR TYPE
!LTERNATING CURRENT !# INDUCTION MOTORS ARE DIVIDED INTO TWO ELECTRICAL
CATEGORIES BASED ON POWER SOURCESINGLE PHASE AND POLYPHASE THREE
PHASE $IRECT CURRENT $# MOTORS ARE USED IN APPLICATIONS WHERE PRECISE
SPEED CONTROL IS REQUIRED OR WHEN BATTERY OR GENERATED DIRECT CURRENT IS THE
AVAILABLE POWER SOURCE
ELECTRICAL AND PERFORMANCE
CHARACTERISTICS
/NE OF THE BEST WAYS TO GUARANTEE ECONOMICAL PERFORMANCE AND LONG MOTOR
LIFE IS TO MAKE SURE YOUR MOTORS OPERATE AT NAMEPLATE VOLTAGE !PPLYING TOO
HIGH A VOLTAGE MAY REDUCE THE MOTOR S EFFICIENCY AND INCREASE OPERATING
TEMPERATURES 4HE NET RESULT IS SHORTER MOTOR LIFE
5NDER VOLTAGE CAN ALSO SHORTEN MOTOR LIFE /PERATING ON TOO LOW A VOLTAGE
REDUCES THE MOTOR S EFFECTIVE HORSEPOWER 4HE MOTOR WILL ATTEMPT TO DRIVE THE
LOAD IT WAS INTENDED TO DRIVE BECOME OVERLOADED DRAW MORE CURRENT THAN
NORMAL AND OVERHEAT !GAIN THE RESULT WILL BE PREMATURE FAILURE
ENCLOSURES AND ENVIRONMENT
DRIP-PROOF:
6ENTING IN END FRAME AND OR MAIN FRAME LOCATED TO PREVENT
DROPS OF LIQUID FROM FALLING INTO MOTOR WITHIN A ANGLE FROM VERTICAL
$ESIGNED FOR USE IN AREAS THAT ARE REASONABLY DRY CLEAN AND WELL VENTILATED
USUALLY INDOORS )F INSTALLED OUTDOORS IT IS RECOMMENDED THAT THE MOTOR BE
PROTECTED WITH A COVER THAT DOES NOT RESTRICT THE FLOW OF AIR TO THE MOTOR
TOTALLY ENCLOSED AIR OVER (TEAO):
$UST TIGHT FAN AND BLOWER DUTY
MOTORS DESIGNED FOR SHAFT MOUNTED FANS OR BELT DRIVEN FANS 4HE MOTOR MUST
BE MOUNTED WITHIN THE AIRFLOW OF THE FAN
TOTALLY ENCLOSED NON-VENTILATED (TENV):
.O VENT OPENINGS
TIGHTLY ENCLOSED TO PREVENT THE FREE EXCHANGE OF AIR BUT NOT AIRTIGHT (AS
NO EXTERNAL COOLING FAN AND RELIES ON CONVECTION FOR COOLING 3UITABLE FOR
USE WHERE EXPOSED TO DIRT OR DAMPNESS BUT NOT FOR HAZARDOUS EXPLOSIVE
LOCATIONS
TOTALLY ENCLOSED FAN COOLED (TEFC):
3AME AS THE 4%.6 EXCEPT
HAS EXTERNAL FAN AS AN INTEGRAL PART OF THE MOTOR TO PROVIDE COOLING BY
BLOWING AIR AROUND THE OUTSIDE FRAME OF THE MOTOR
TOTALLY ENCLOSED, HOSTILE AND SEVERE ENVIRONMENT
MOTORS:
$ESIGNED FOR USE IN EXTREMELY MOIST OR CHEMICAL ENVIRONMENTS
BUT NOT FOR HAZARDOUS LOCATIONS
TOTALLY ENCLOSED BLOWER COOLED MOTORS (TEBC):
5SED TO
EXTEND THE SAFE SPEED RANGE OF INVERTER FED MOTORS 3IMILAR TO 4%&# EXCEPT
A SMALL CONSTANT SPEED FAN PROVIDES UNIFORM AIRFLOW REGARDLESS OF THE DRIVE
MOTOR S OPERATING SPEED
EXPLOSION-PROOF MOTORS:
4HESE MOTORS MEET 5NDERWRITERS
,ABORATORIES AND #ANADIAN 3TANDARDS !SSOCIATION STANDARDS FOR USE IN
HAZARDOUS EXPLOSIVE LOCATIONS AS INDICATED BY THE 5, LABEL AFFIXED TO THE
MOTOR ,OCATIONS ARE CONSIDERED HAZARDOUS BECAUSE THE ATMOSPHERE DOES
OR MAY CONTAIN GAS VAPOR OR DUST IN EXPLOSIVE QUANTITIES
Three Phase or Polyphase
'ENERAL PURPOSE THREE PHASE MOTORS HAVE
DIFFERENT ELECTRICAL DESIGN CLASSIFICATIONS AS
DEFINED BY .%-! .%-! $ESIGN ! AND "
MOTORS ARE OF NORMAL STARTING TORQUE WITH NORMAL
STARTING CURRENT .%-! $ESIGN # MOTORS HAVE
HIGHER STARTING TORQUE WITH NORMAL STARTING
CURRENT !LL THREE TYPES HAVE SLIP OF LESS THAN
h3LIPv BEING A TERM WHICH EXPRESSES AS A
PERCENTAGE THE DIFFERENCE BETWEEN
SYNCHRONOUS MOTOR SPEED AND FULL LOAD MOTOR
SPEED FOR EXAMPLE
RPM SYNCHRONOUS
VERSUS A FULL LOAD SPEED OF
RPM
.%-! S $ESIGN " AND # STANDARDS ARE MINIMUM PERFORMANCE STANDARDS )N
PRACTICE SOME MANUFACTURERS INCLUDING ,%%3/. BUILD SMALL INTEGRAL (0
$ESIGN " MOTORS WITH LOCKED ROTOR AND BREAKDOWN TORQUE LEVELS EQUALLING
.%-! $ESIGN # STANDARDS
.%-! 4 FRAME MOTORS THROUGH (0 covered BY %0!#4 IDENTIFIED
WITH A h'v CATALOGUE PREFIX ARE LABELED $ESIGN " EXCEED .%-! $ESIGN "
PERFORMANCE LEVELS AND HAVE EFFICIENCIES EQUAL TO %0!#4 MANDATED
LEVELS %0!#4 exempt THREE PHASE BASE MOUNTED MOTORS ARE LABELED
$ESIGN # AND HAVE PERFORMANCE CHARACTERISTICS MEETING .%-! S $ESIGN #
STANDARDS WITH STANDARD MOTOR EFFICIENCIES -OTORS (0 AND LARGER ARE
EXEMPT FROM %0!#4 LEGISLATION
Permanent Magnet DC
4HIS DESIGN HAS LINEAR SPEED TORQUE
CHARACTERISTICS OVER THE ENTIRE SPEED RANGE
3#2 RATED MOTOR FEATURES INCLUDE HIGH
STARTING TORQUE FOR HEAVY LOAD APPLICATIONS AND
DYNAMIC BRAKING VARIABLE SPEED AND REVERSING
CAPABILITIES $ESIGNS ARE ALSO AVAILABLE FOR USE
ON GENERATED LOW VOLTAGE $# POWER OR REMOTE
APPLICATIONS REQUIRING BATTERY POWER
