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Below is a list of NEMA enclosure types; these types are further defined in NEMA 250- Enclosures for Electrical Equipment. Each type specifies characteristics of an enclosure, but not, for example, a specific enclosure size. Note that higher numbers do not include the lower-numbered tests. For example, types 3, 4 and 6 are intended for outdoor ...
The first commutator-free single-phase AC induction motor was invented by Hungarian engineer Ottó Bláthy; he used the single-phase motor to propel his invention, the electricity meter. [ 9 ] [ 10 ] The first AC commutator-free polyphase induction motors were independently invented by Galileo Ferraris and Nikola Tesla , a working motor model ...
NEMA (National Electrical Manufacturers Association) contactors and motor starters are rated by sizes. These sizes are grouped by rated current and power . [ 1 ] [ 2 ]
NEMA enclosure types; NEMA size This page was last edited on 3 October 2020, at 21:16 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 ...
All NEMA 1 devices are two-wire non-grounding devices (hot-neutral) rated for 125 V maximum. 1-15P plugs have two parallel flat blades, 1 ⁄ 4 inch (6.4 mm) wide, 0.06 inches (1.5 mm) thick, 5 ⁄ 8 – 23 ⁄ 32 inch (15.9–18.3 mm) long, and spaced 1 ⁄ 2 inch (12.7 mm) apart. 1-15R receptacles have been prohibited in new construction in ...
The National Electrical Manufacturers Association (NEMA) [5] is the largest trade association of electrical equipment manufacturers in the United States. [6] Founded in 1926, it advocates for the industry and publishes standards for electrical products. Notably, the form of US household electrical outlets and plugs is specified by NEMA.
Small variable-frequency drive Chassis of above VFD (cover removed). A variable-frequency drive (VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, variable voltage variable frequency drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed and torque by varying the frequency of the ...
The Realistic Concertmate MG-1 is an analog synthesizer co-developed by Tandy and Moog Music as a basic, low-priced synthesizer to be sold by Radio Shack under their "Realistic" brand. With estimated unit sales of 23,000 from 1982 to 1983, the MG-1 became the best-selling synthesizer ever manufactured by Moog Music, [ 2 ] and is one of the most ...