National Electrical Manufactures

Each segment of the insulated wire and cable industry has its own set of standards, and cables are built to conform to specifications provided by a large variety of technical associations such as The Institute of Electrical Electronic Engineers (IEEE), The Insulated Cable Engineers Association, (ICEA), National Electrical Manufacturers Association (NEMA), Underwriters Laboratories (UL), Rural Electrification Administration of the U.S. Department of Agriculture (REA), Association of Edison Illumination Companies (AEIC), MiUtary Specifications of the Department of Defense (MIL), American Society for Testing and Materials (ASTM), National Electrical Code (NEC), etc. 

High Pressure Decorative Eaminates, Standards PubHcation No. LD3-1991, National Electrical Manufacturers Association (NEMA), Washington, D.C., 1991. 

Most of the laminates used for rigid printed circuit boards have been classified, by the National Electrical Manufacturers Association (NEMA), according to the combination of properties that determine the suitabiHty of a laminate for a particular use. Eiber reinforcements make laminate-effective properties orthotropic. 

Electrical Laminates. A significant use for epoxy resins is in the manufacture of copper-clad epoxy-glass printed circuit boards. Systems are available that meet the National Electrical Manufacturers Association (NEMA), GIO, Gil, FR3, FR4, FR5 specifications. Currently the majority of boards are manufactured to the fiame-retardant FR4 specification. The flame retardance is achieved by the use of a soHd epoxy resin based on... 

Environmental Enclosures Enclosures for valve accessories are sometimes required to provide protection from specific environmental conditions. The National Electrical Manufacturers Association (NEMA) provides descriptions and test methods for equipment used in specific environmental conditions in NEMA 250. Protection against rain, windblown dust, hose-directed water, and external ice formation are examples of environmental conditions that are covered by NEMA standards. 

MG-I Reference to a publiealion on Motors and Generators by NEMA (National Electrical Manufacturers Association. USA) which is adopted universally. 

NEMA Standards Publication No. SM 23-1979, Steam Turbines for Mechanical Drive Service, National Electrical Manufacturers Associatioi., Washington, DC, 1979. 

For distribution transformers, a voluntary standard assembled by the trade association NEMA (National Electrical Manufacturers Association) achieves substantial savings, particularly in standby energy, with a payback period typically of three years. The loss rate from the transformers is small, but the throughput of electricity accounts for a large fraction of total energy use in buildings, particularly when utility-owned transformers are considered. 

Define plant areas requiring explosion-proof, drip-proof and open motor and associated electrical components. Refer to National Electrical Code and National Electrical Manufacturer s Association Standards. 

Used by permission NEMA Standards MG 1-1978, Motors and Generators, 1974. National Electrical Manufacturers Association. 

Used by permission Motors and Generators, NEMA Standard MG 1-1993, Rev. 1, Section II, Part 12, p. 25-26, 1995. National Electrical Manufacturers Association. (Note All references to NEMA Standards are reprinted by Permission of the National Electrical Manufacturers Association from NEMA Standards Publication No. MGi-1-1993, Motors and Generators (1995) by the National Electrical Manufacturers Association, Rev. No. 2, Apr. 1, (1995),)... 

NOTE All references to NEMA Standards are reprinted hy permission of the National Electrical Manufacturers Association from NEMA Standards Publication No. MG-1-1993, Rev. No. 2, April 1, 1995, Motors and Generators. 

Reprinted by permission NEMA Standards MG I-I993, Motors and Generators, Revision I, Section I, Part I, p. SSFDI, 1995. National Electrical Manufacturers Association. See source note for Table 14-8. 

A. All motor drives for use in process plant applications should meet the requirements of the Electrical and Electronics Engineers (IEEE) Standard 841-1994 (or latest edition), The National Electrical Manufacturers Association Standard MG-1 (latest edition) and the National Eire Protection Association applicable Standards/Codes (latest edition). 

Chapter 14, Mechanical Drivers, has been updated to inlcude the latest code and standards of the National Electrical Manufacturer s Association and information on the new energy efficient motors. 

There are a number of electric motor types available. These motors are classified by the National Electrical Manufacturers Association (NEMA). These electric motor classifications are presented in the NEMA standards [7]. 

The National Electrical Manufacturers Association (NEMA) has developed a standard that specifies minimum pulley diameters that should be used on electric motors. Since motor bearings are specified using a relatively small maximum overhung load, minimum pulley diameters can have a dramatic effect on motor bearings. The increase in tension that is created by smaller pulleys can transmit a potentially destructive side-load on the bearings. 

Battery manufacturers are producing more rechargeable batteries each year. The National Electrical Manufacturers Association has estimated that the U.S. demand for rechargeable batteries is growing twice as fast as the demand for nonrechargeable batteries. 

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