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How to properly operate a three-phase motor using single-phase power

  • October 2016
  • Number of views: 2256
  • Article rating: No rating
Trade press article — Plant Engineering

There are several methods to operating a three-phase motor using single-phase power to make what would be an otherwise expensive and arduous process a little easier.

Operating a three-phase motor using single-phase power

  • August 2016
  • Number of views: 676
  • Article rating: No rating

We all have that occasional customer who got a “deal” at an auction: a compressor, or lathe, or wood-working equipment, only to discover when he started to install it that this equipment has a three-phase motor and only single-phase power is available. You know that you are about to be called upon to “convert” that piece of equipment, and you probably realize that it’s going to cost you more than you can charge.

Funcionamiento de un motor trifásico con energía monofásica

  • August 2016
  • Number of views: 649
  • Article rating: No rating

Todos nosotros tenemos ese cliente ocasional que compró “una ganga” en una subasta, como un compresor, un torno o una máquina para trabajar madera y que solo descubre al comenzar a instalarlo que ese equipo tenía un motor trifásico y que él dispone únicamente de energía monofásica. Posiblemente sea su vecino o un amigo de la iglesia. En cualquier caso, usted está a punto de ser contactado para “convertir” esa parte del equipo y probablemente piensa que eso le va a costar más de lo que el puede gastar. Soluciones utilizadas anteriormente incluyen​: Conectando dos fases a los 220 voltios de la entrada monofásica y condensadores a una de las líneas energizadas para crear “una línea fantasma” para el tercer cable. Utilizar un convertidor de fase rotativo. Descargar el artículo siguiente para los detalles.

Training Film 13: Assembly of a Single-Phase Capacitor Motor

  • June 1984
  • Number of views: 14
  • Article rating: No rating

Step-by-step assembly of a capacitor motor, including installation of both ball and sleeve bearings. Shows tools needed and how to align parts marked during disassembly.

Training Film 12: Winding a Single-Phase Stator

  • June 1984
  • Number of views: 12
  • Article rating: No rating

Shows proper procedures for inserting concentric coils into a single-phase stator. Shows tools and insulations and points out relationship between running and starting winding coils.

Training Film 11: Winding Single-Phase Concentric Coils

  • June 1984
  • Number of views: 13
  • Article rating: No rating

Shows method of winding concentric coils, which includes determining the coil width for the various size coils within each group, how to set the concentric winding head and select the proper grooves for winding the coils. Also shows how to wind coils using the Holden Head.

Training Film 10: Disassembly of a Single-Phase Capacitor Motor

  • June 1984
  • Number of views: 13
  • Article rating: No rating

Step-by-step disassembly of a capacitor motor, both ball bearing and sleeve bearing. Includes bearing removal (both types), plus operation and replacement of various types of starting switches and governors. Stripping not included.

Training Film 9: Taking Data From a Single-Phase Motor

  • June 1984
  • Number of views: 11
  • Article rating: No rating

Shows step-by-step procedure for properly determining and recording the type of connection, number of parallel circuits, turns per coil, wire size, span and groups, and how to distinguish between running and starting windings.

Getting The Most From Your Electric Motors

Getting The Most From Your Electric Motors - coverThis 40-page booklet provides a great marketing tool for your service center! Use it to provide end users with information that will help them obtain the longest, most efficient and cost-effective operation from general and definite purpose electric motors.

This booklet covers topics such as:

  • Installation, startup and baseline information
  • Operational monitoring and maintenance
  • Motor and baseline installation data
  • How to read a motor nameplate
  • Motor storage recommendations



EASA Technical Manual

EASA Technical Manual cover

The EASA Technical Manual is the association's definitive and most complete publication. It's available FREE to members in an online format. Members can also download PDFs of the entire manual or individual sections.


ANSI/EASA AR100-2015

ANSI/EASA AR100-2015 cover

Recommended Practice for the Repair of Rotating Electrical Apparatus
This is a must-have guide to the repair of rotating electrical machines. Its purpose is to establish recommended practices in each step of the rotating electrical apparatus rewinding and rebuilding processes.




EASA AR200: Guide for the Repair of Power and Distribution Transformers cover

Guide for the Repair of Power and Distribution Transformers
This document establishes guidelines for each step of the repair of power transformers, describing record keeping, tests, analysis, and general guidelines for the repair of power transformers.