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Archive for August, 2014

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Service


Industrial Repair Group delivers fast and reliable Cutler Hammer – Eaton Soft Starter Repair Service Service. We understand that damaged equipment can wreak havoc on your bottom line. We pride ourselves by delivering guaranteed repairs and fast turn around times when you need it most. We do this by partnering with you on each and every repair.

Please don't hesitate to call Industrial Repair Group and speak with one of our electronic repair specialist about your Cutler Hammer – Eaton Soft Starter Repair Service. We are here to help!

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Best in Class Service with Every Cutler Hammer – Eaton Soft Starter Repair Service

Every Cutler Hammer – Eaton Soft Starter Repair Service is subjected to dynamic function testings to verify a successful repair and then backed by an Industrial Repair Group 18 Month Repair Warranty. Industrial Repair Group fully tests and replaces all high failure components such as ICs, PALs, EPROMs, GALs, and surface mounted components. Factory sealers and conformal coatings are re-applied as needed with each Cutler Hammer – Eaton Soft Starter Repair Service to restore your equipment back to its' OEM specs.

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At Industrial Repair Group, our goal is to offer the best repair in the industry and the most competitive quotes. Our wide selection of services and industry leading 18 month repair guarantee are sure to provide you with the perfect repair solution for all of your industrial needs. We specialize in industrial electronics, electric motor rebuilds, and complete customer satisfaction.

AC TECHNOLOGY INDRAMAT
ACCO BABCOCK INC INDRAMAT & STEGMANN
ACCO BRISTOL INELCO & HS ELECTRONIC
ACCU SORT INEX INC
ACME ELECTRIC & STANDARD POWER INC INLAND MOTOR
ACOPIAN ACRISONS INFRANOR
ACROMAG & MOORE PRODUCTS INGERSOLL RAND
ADEPT TECH INIVEN
ADTECH POWER INC INNOVATIVE TECHNOLOGY INC
ADVANCE BALLAST INTEL
ADVANCED MICRO CONTROLS INTERMEC
ADVANCED MOTION INTERNATIONAL POWER
AEROTECH & MOTOROLA INTROL DESIGN
AGASTAT IRCON
AGILENT ISHIDA
AGR ISI ROBOTICS
AIRCO ISSC
ALLEN BRADLEY ISSC & SCI
AMBITECH IND JOHNSON CONTROLS & YOKOGAWA
AMETEK KTRON
AMGRAPH KTRON & KB ELECTRONICS
AMICON KB ELECTRONICS
AMPROBE KB ELECTRONICS & RIMA
ANAHEIM AUTOMATION KEARNEY & TRECKER
ANALOGIC KEB COMBIVERT
ANDOVER CONTROLSANILAM & SEQUENTIAL INFO SYS KEB COMBIVERT & TOSHIBA
ANORAD KEITHLEY & HOLADAY
ANRITSU KEPCO
AO SMITH & MAGNETEK KEYENCE CORP
APC KIKUSUI
APPLIED AUTOMATION KME INSTACOLOR
APPLIED MATERIAL KNIEL
APPLIED MICORSYSTEMS KOEHLER COMPANY
APV AUTOMATION KONE
APW MCLEAN KONSBERG
ARBURG KRAUSS MAFFEI
ARCAIR KRISTEL CORPORATION
ARCOM LABOD ELECTRONICS
ARGUS LAMBDA
AROS ELECTRONICS LAMBDA & QUALIDYNE CORP
ARPECO LANTECH
ARTESYN TECHNOLOGIES LEESON ELECTRIC CO
ASCO & ITT LEESONA & ELECTRIC REGULATOR
ASEA BROWN BOVERI & STROMBERG LEINE & LINDE
ASHE CONTROLS LENORD & BAUER
ASI CONTROLS LENZE
ASI KEYSTONE & ANALOGIC LEROY SOMER
ASR SERVOTRON LESTER ELECTRIC
ASSOCIATED RESEARCH LEUZE
ASTROSYSTEMS LH RESEARCH
ATC LINCOLN ELECTRIC
ATHENA LITTON
ATLAS LOVE CONTROLS
ATLA COPCO LOVEHOY & BOSTON
AUTOCON TECHNOLGIES INC LOYOLA
AUTOMATED PACKAGING LUST ELECTRONICS
AUTOMATION DIRECT MAGNETEK
AUTOMATION INTELLIGENCE MAGNETEK & GEMCO ELECTRIC
AUTOMATIX MAN ROLAND
AVERY MAPLE SYSTEMS
AVG AUTOMATION MARKEM
AYDON CONTROLS MARQUIP
B & K MARSCH
B & R MAHTSUSHITA ELECTRIC & FANUC
BABCOCK & ASEA BROWN BOVERI MAZAK
BAKER PERKINS MCC ELECTRONICS
BALANCE ENGINEERING MEMOTEC
BALDOR & ASR SERVOTRON MERRICK SCALE
BALWIN & BEI INDUSTRIAL ENCODER METRA INSTRUMENTS
BALL ELECTRONIC METTLER TOLEDO
BALUFF MHI CORRUGATING MACHINERY
BALOGH MIBUDENKI
BANNER ENGINEERING MICRO MEMORY
BARBER COLMAN MICRO MOTION
BARBER COLMAN MICROSWITCH
BARDAC MICROSWITCH & HONEYWELL
BARKSDALE MIKI PULLEY & BOSTON
BARR MULLIN MILLER ELECTRIC
BASLER ELECTRIC & WESTINGHOUSE MILLER ELECTRIC & LINCOLN ELECTRIC
BAUMULLER MINARIK ELECTRIC CO
BEI INDUSTRIAL ENCODER MINARIK ELECTRIC CO & LEESON ELECTRIC CO
BENDIX DYNAPATH MITUSUBISHI
DENDIX SHEFFIELD MOELLER ELECTRIC
BENSHAW MOOG
BENTLEY NEVADA MONTWILL& SCHAFER
BERGER LAHR MOTOROLA
BEST POWER MOTORLA SEMICONDUCTOR
BIKOR CORP MOTORTRONICS
BK PRECISION MSA
BOBST MTS SYSTEMS CO
BOGEN COMMUNICATION MULLER MARTINI & GRAPHA ELECTRONIC
BOMAC MURR ELEKTRONIK
BORG WARNER & DANFOSS NACHI
BOSCH NATIONAL CONTROLS
BOSCHERT & ARTESYN TECHNOLOGIES NEMATRON CORP
BOSTON NEWPORT
BRANSON NEXT
BRIDGEPORT NIKKI DENSO
BURTON & EMERSON NIOBRARA R&D CORP
BUTLER AUTOMATIC NJE CORPORATION
CAROTRON NORDSON
CE INVALCO NORDSON & DANAHER CONTROLS
CHROMALOX NORTH AMERICAN MFG
CINCINNATI MILACRON & ADVANTAGE ELECTRONICS NORTHERN TELECOM
CLEAVELAND MOTION CONTROL NOVA
CONDOR NSD
CONRAC NUM
CONTRAVES NUMERIK
CONTREX OLEC
CONTROL CONCEPTS OKUMA
CONTROL TECHNOLGY INC OMEGA ENGINEERING
COSEL OMRON
COUTANT & LAMBDA OPTO 22
CROMPTON ORIENTAL MOTOR
CROWN ORMEC
CUSTOM SERVO OSG TAP & DIEP&H HARNISCHFEGER
CYBEREX PACKAGE CONTROLS
DANAHER CONTROLS PANALARM
DANAHER MOTION PARKER
DANFOSS & DART CONTROLS PAYNE ENGINEERING & BURTON
DART CONTROLS PEPPERL & FUCHS
DATA ACQUISITION SYS PJILLIPS & PHILLIPS PMA
DAYKIN PHOENIX CONTACT
DAYTRONIC PILZ
DEC PINNACLE SYSTEMS
DELTA PIONEER MAGNETICS
DELTA ELECTRONICS PLANAR SYSTEMS
DELTRON & POWER MATE POLYCOM
DEUTRONIC POLYSPEDE
DIGITEC POWER CONTROL SYSTEM
DISC INSTURMENTS & DANAHER CONTROLS POWER CONVERSION
DISPLAY TECH POWER ELECTRONICS
DOERR POWER GENERAL & WESTINGHOUSE
DOMINO PRINTING POWER MATE
DREXELBROOK POWER ONE
DRIVE CONTROL SYSTEMS POWER PROP
DUNKERMOTOREN POWER SOURCE
DYNAGE & BROWN & SHARPE POWER SWITCH CORP
DYNAMICS RESEARCH POWER SYSTEMS INC
DYNAPOWER & DANAHER CONTROLS POWER VOLT
DYNAPRO & FLUKE POWERTEC INDUSTIRAL MOTORS INC
DYNISCO PULS
EATON CORPORATION PYRAMID
EATON CORPORATION & DANAHER CONTROLS QEST
ECCI QUINDAR ELECTRONICS
EG&G RADIO ENERGIE
ELCIS RAMSEY TECHNOLOGY
ELCO RED LION CONTROLS & SABINA ELECTRIC
ELECTRIC REGULATOR RELIANCE ELECTRIC
ELECTRO CAM RENCO CORP
ELECTRO CRAFT & RELIANCE ELECTRIC ROBICON
ELECTROHOME ROSEMOUNT & WESTINGHOUSE
ELECTROL RTA PAVIA
ELECTROMOTIVE SABINA ELECTRIC
ELECTROSTATICS INC SAFTRONICS
ELGE SANYO
ELO TOUCH SYSTEMS SCHROFF & STYRKONSULT AB
ELPAC & CINCINNATI MILACRON SCI & ISSC
ELSTON ELECTRONICS SELTI
ELWOOD CORPORATION SEMCO
EMS INC SEQUENTIAL INFO SYS
ENCODER PRODUCTS SEW EURODRIVE & TOSHIBA
ETA SHINDENGEN
EUROTHERM CONTROLS SICK OPTIC ELECTRONIC
EXOR SIEMENS
FANUC SIEMENS MOORE
FANUC & GENERAL ELECTRIC SIERRACIN POWER SYSTEMS
FENWAL SIGMA INSTRUMENTS INC
FIFE CORP SMC & CONAIRSOCAPEL
FIREYE & ITT SOLA ELECTRIC
FIRING CIRCUITS SOLITECH
FISCHER & PORTER SONY
FISHER CONTROLS SORENSEN
FLUKE STANDARD POWER INC
FORNEY STATIC CONTROL SYSTEMS
FOXBORO STEGMANN & INDRAMAT
FOXBORO & BALSBAUGH SUMITOMO MACHINERY INC & TOSHIBA
FUJI ELECTRIC SUMTAK CORP
FUTEC SUNX LTD
GAI & ASEA BROWN BOVERI SUPERIOR ELECTRIC
GALIL MOTION CONTROLS SWEO ENGINEERING & ROCHESTER INSTRUMENT SYSTEMS
GD CALIFORNIA INC T&R ELECTRIC & SYRON ENGINEERING
GEM80 TAMAGAWA & RELIANCE ELECTRIC
GENERAL ELECTRIC TAPESWITCH
GENERAL ELECTRIC & FANUC TB WOODS & FUJI ELECTRIC
GIDDINGS & LEWIS TDK
GLENTEK TECNO ELETTRONICA
GOLDSTAR TECTROL
GORING KERR TEIJIN SEIKI
GOSSEN TEKEL
GRAHAM TODD PRODUCTS CORP
GRAINGER TOEI ELECTRIC
GRAPHA ELECTRONIC TOSHIBA
GREAT LAKES INSTRUMENTS TOTKU ELECTRIC & GENERAL ELECTRIC
GROUPE SCHNEIDER TRACO ENGINEERING
HAAS UNICO
HAMMOND UNIPOWER
HATHAWAY VAREC
HAYSEEN VECTOR VID
HEIDELBERG VERO ELECTRONICS & TELEMOTIVE
HEIDENHAIN CORP VIDEO JET
HIRATA VIEW TRONIX
HITACHI & FANUC VIVID
HITRON ELECTRONICS VOLGEN & POWER SOURCE
HOBART BROTHERS CO WARNER ELECTRIC & EMERSON
HOHER AUTOMATION WESTAMP INC & WESTINGHOUSE
HONEYWELL WESTINGHOUSE
HONEYWELL & NEMATRON CORP WHEDCO
HORNER ELECTRIC WIRE ELECTRIC
HUBBELL & FEMCO XENTEK INC
HUBNER & AMICON XYCOM & WARNER ELECTRIC
HURCO MFG CO YASKAWA ELECTRIC
IEE ZENITH
IMMERSION CORPORATION ZYCRON

How Motor Soft Starters Work


Thank you for choosing Industrial Repair Group. If you would like a printable version of How Motor Soft Starters Operate, please follow this link: IRG-Motor-Soft-Starter

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A sample of a Motor Soft starters

A motor soft starter is a device used with AC electric motors to temporarily reduce the load and torque in the powertrain of the motor during startup. This reduces the mechanical stress on the motor and shaft, as well as the electrodynamic stresses on the attached power cables and electrical distribution network, extending the lifespan of the system.[1]

Motor soft starters can consist of mechanical or electrical devices, or a combination of both. Mechanical soft starters include clutches and several types of couplings using a fluid, magnetic forces, or steel shot to transmit torque, similar to other forms of torque limiter. Electrical soft starters can be any control system that reduces the torque by temporarily reducing the voltage or current input, or a device that temporarily alters how the motor is connected in the electric circuit.

Electrical soft starters can use solid state devices to control the current flow and therefore the voltage applied to the motor. They can be connected in series with the line voltage applied to the motor, or can be connected inside the delta (Δ) loop of a delta-connected motor, controlling the voltage applied to each winding. Solid state soft starters can control one or more phases of the voltage applied to the induction motor with the best results achieved by three-phase control. Typically, the voltage is controlled by reverse-parallel-connected silicon-controlled rectifiers (thyristors), but in some circumstances with three-phase control, the control elements can be a reverse-parallel-connected SCR and diode.

Another way to limit motor starting current is a series reactor. If an air core is used for the series reactor then a very efficient and reliable soft starter can be designed which is suitable for all type of 3 phase induction motor [ synchronous / asynchronous ] ranging from 25 KW 415 V to 30 MW 11 KV. Using an air core series reactor soft starter is very common practice for applications like pump, compressor, fan etc. Usually high starting torque applications do not use this method.

Applications

Soft starters can be setup to the requirements of the individual application. In pump applications, a soft start can avoid pressure surges. Conveyor belt systems can be smoothly started, avoiding jerk and stress on drive components. Fans or other systems with belt drives can be started slowly to avoid belt slipping. In all systems, a soft start limits the inrush current and so improves stability of the power supply and reduces transient voltage drops that may affect other loads.

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Motor and machine

Across-the line starting of induction motors is accompanied by inrush currents up to 7 times higher than running current, and starting torque up to 3 times higher than running torque. The increased torque results in sudden mechanical stress on the machine which leads to a reduced service life. Moreover, the high inrush current stresses the power supply, which may lead to voltage dips. As a result, the operability of sensitive consumers may be impaired.[1]

Motor start-up

A soft start-up eliminates the undesired side effects. Several types based on control of the supply voltage or mechanical devcies such as slip clutches were developed. The list provides an overview of the various electric start-up types. The current and torque characteristic curves show the behavior of the respective starter solution.

Direct on-line starting

  • Three-phase motor with low to medium power rating
  • 3 conductors to the motor
  • High starting torque
  • High current peak
  • Voltage dip
  • One simple switching device

Star-delta start-up

  • Three-phase motor with low to high power rating
  • Six conductors to the motor
  • Reduced starting torque, 1/3 of the nominal torque
  • High mains load due to current peak during switchover from Y to D
  • High mechanical stress due to torque surge during switchover from Y to D
  • Two or three switching devices, more maintenance

Soft start-up

  • Three-phase motor with low to high power rating
  • 3 conductors to the motor
  • Variable starting torque
  • No current peak
  • No torque peaks
  • Negligible voltage dip
  • One simple switching device
  • Optional: Guided soft stop, protective functions, etc.
  • Zero maintenance
  • Compared to contactor solutions, soft starters, sometimes also referred to as soft starting devices, offer considerable advantages.

Torque surges entail high mechanical stress on the machine, which results in higher service costs and increased wear. High currents and current peaks lead to high fixed costs charged by the power supply companies (peak current calculation) and to increased mains and generator loads.

A soft starter continuously controls the three-phase motor’s voltage supply during the start-up phase. This way, the motor is adjusted to the machine’s load behavior. Mechanical operating equipment is accelerated in a gentle manner. Service life, operating behavior and work flows are positively influenced.

See also

  • Braking chopper
  • Space Vector Modulation
  • Variable speed air compressor
  • Vector control (motor)
  • Korndorfer starter
  • Motor controller
  • Direct on line starter
  • Adjustable-speed drive
  • Electronic speed control
  • Variable-frequency drive
  • Thyristor drive
  • DC motor starter section of Electric motor

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