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	Convert-A-Phase, Inc., Single to Three Phase Converters
		The phase converter uses the process of induction and capacitors to convert a third phase to be utilized by electrical equipment acceptable to phase converter power.
		Phase conversion really means in the world of a rotary converter that an extra phase is produced in a two phase line that is usually represented by a 1 to 3 phase call out.
		Phase conversion only takes place in the sense that one of the phases of the 1 to 3 phase system is connected to the manufactured phase by a capacitor to maintain a correct phase angle with the existing single phase system.
	www.convertaphase.com (811 words)

	Single Phasing and Phase Unbalance (Wisconsin Public Service Corporation) (Site not responding. Last check: 2007-10-08)
		This condition is known as "single-phasing." The loss of a single phase on a three-phase line may be due to a downed line or a blown pole top fuse on the utility system.
		Loss of a single phase may also result from a single-phase overload condition causing one fuse to blow, or an equipment failure within the end-user's facility.
		If after the overload devices on the energized phases isolate the motor, the motor is not then isolated from the lost phase, later attempting a restart on that single-phase supply will cause the motor to draw locked rotor current.
	www.wisconsinpublicservice.com /business/phase.asp (1318 words)

	phaseconverter
		The phase converter will artificially generate the third leg of a three phase system from the two poles of a single phase system.
		Phase A-B (Phase A to B) will be 240 volts, which is the line voltage of your house.
		The output of the rotary phase converter is closer to being a true 3-phase source than the static converter.
	home.att.net /~waterfront-woods/Articles/phaseconverter.htm (3302 words)

	3 Phase Basics (Site not responding. Last check: 2007-10-08)
		With single phase the magnets and coils all line up with each other and are said to be in "phase".
		In a single phase unit the coils are wound opposite of the first.
		Also, in 3 phase the conductors need only be 75% the size of conductors for single phase for the same power output.
	www.windstuffnow.com /main/3_phase_basics.htm (815 words)

	Single Phase
		Single speed or multi-speed motors can be designed with the top speed being 1625 RPM and the 1075 RPM being the most popular speed.
		Then, as in other single phase motors with starting switches, when the rotor reaches approximately 75% to 80% of full speed, the starting switch OPENS, removing the capacitor and start winding from the circuit and allows the MAIN or running winding to complete the ramp up of speed to full operational RPM.
		Other single phase motors have a rotor of cast aluminum alloy but the Repulsion Start motor has a winding with the ends of the coils attached to the commutator.
	www.apprep.com /motors_single_phase.htm (1025 words)

	Single-phase induction motors
		A 90-degree electrical phase difference between the two windings is obtained by connecting the auxiliary winding in series with a capacitor and starting switch.
		The electrical phase shift between the currents in the two windings is obtained by making the impedance of the windings unequal.
		Although the ideal angular phase difference is 90° for maximum starting torque, the 30-degree phase difference still generates a rotating field.
	www.tpub.com /neets/book5/18d.htm (952 words)

	Single phase to three phase conversion (3 phase converters)
		Single to 3 phase converters (misnamed 3 phase transformers) provide three phase power from a single phase supply.
		For three phase converters: E-mail by clicking including delivery location so we can use an appropriate currency and estimate transport costs, power required in kW or HP and state if you need to derive single phase from one of the 3 phases and neutral, e.g.
		Unlike 'static' phase converters, they are not limited to driving a single motor, nor do they limit the motor's torque or have a lower limit to output power.
	www.isomatic.co.uk /3phConverter.htm (2355 words)

	Edison Controls F.C.I. - Single Phase Faulted Circuit Indicators (Site not responding. Last check: 2007-10-08)
		The EC-11 faulted circuit indicator is a single phase, cable mounted unit with remote indicator, designed for use on the cable as well as the elbow.
		The EC-15 is a single phase, cable mounted unit with remote indicator, designed for use on insulated cable.
		The EC-20 faulted circuit indicator is a single phase, secondary voltage reset unit with remote indicator.
	www.edconfci.com /fcisingle.shtml (440 words)

	Single-phase electric power - Wikipedia, the free encyclopedia
		Two methods of splitting out single phase from a three phase system are in common use.
		Where 3 phase stops and single phase begins
		Note that true two phase power, meaning the simultaneous provision of sine wave and cosine wave electricity (that is, 90 degrees out of phase) is no longer widely used.
	en.wikipedia.org /wiki/Single_phase_electric_power (691 words)

	SINGLE to 3 PHASE CONVERTER
		The single phase 220 VAC input is brought in on lines 1 and 2, labeled L1 and L2 in figure 1.
		It has two main poles to switch the 220 VAC single phase lines and an auxiliary set of contacts used to latch the coil of the relay energized when the main contacts are closed.
		For 220 VAC single phase systems this is 2 wires (a 2 pole switch), for 3 phase systems this is 3 wires (a 3 pole switch.) Since the phase converter is supplied with single phase power it can use a 2 pole disconnect or 2 of the 3 poles of a 3 pole switch.
	www.metalwebnews.com /howto/ph-conv/ph-conv.html (3326 words)

	Single Phase Induction Motors
		In the case of the single winding and a stationary rotor, the resultant torque field is stationary.
		Most single phase motors are fitted with a centrifugal switch to disconnect the start winding once the motor is close to full speed.
		The capacitor provides a phase shift to the current flowing in W1 and we therefore have a "two phase" motor while the switch is closed.
	www.lmphotonics.com /single_phase_m.htm (1152 words)

	Phase-A-Matic Phase Converter, Rotary Phase Converter, Static Phase Converter and CNC Phase Converter
		might possibly manufacture and distribute more Rotary and Static Phase Converters combined than any other manufacturer in the U.S.A., having earned a name for being of the highest quality and proven dependability, including in service, technical support and uptime that is available anywhere.
		Our technical support team is dedicated to assist you with every aspect of your converting needs from choosing the right converter to any help you may need in the proper installation and operation of the converter on your machine.
		Our technical expertise is derived from over 40 years of experience in phase converter systems.
	www.phase-a-matic.com (321 words)

	The educational encyclopedia, single phase AC motors, universal AC motors (Site not responding. Last check: 2007-10-08)
		Phase converters operate a 3-phase motor on single phase power, Selecting a phase converter
		Single phase electric motors the split phase motor, also called an induction-start/induction-run motor, is probably the simplest single-phase motor made for industrial use, though somewhat limited.
		Single phase induction motors single-phase motors are truly two-phase machines.
	users.pandora.be /educypedia/electronics/motoracsingle.htm (565 words)

	All About Circuits > split phase power (Site not responding. Last check: 2007-10-08)
		They must be sychronized in phase since if they were otherwise their voltages would buck or cancel (a little like connecting batteries in series but opposite directions).
		This out of phase characteristic is nothing more than the result of your choice of reference for the waveforms - you are measuring "from" the mid-point "out toward" the two opposite polarities of the winding.
		So you have a single phase (vs. some other multi-phase system like a closed delta three phase, etc.), split phase system (the secondary single phase winding is split in two, but still connected, parts by center tapping it).
	forum.allaboutcircuits.com /lofiversion/index.php/t880.html (1158 words)

	Five Cases Where 3-Phase Motors May Run Single Phase (Site not responding. Last check: 2007-10-08)
		If a one phase conductor supplying a 3-phase running motor is opened the motor usually continues to run as a single-phase machine.
		The shunted single phase load can produce unbalanced currents in a motor when one line is opened.
		Parallel 3 phase motors that are supplied from the same source can exchange current under some circumstances when one line is open.
	www.usmotors.com /products/ProFacts/1-124.htm (400 words)

	Acme Transformer Selection, How to select an Acme Transformer
		Select single phase transformer designed to operate at this frequency, having a primary (input) equal to the supply voltage and a secondary (output) equal to the voltage required by the load.
		A three phase transformer is selected which is designed to operate at this frequency having a primary (input) equal to the supply voltage and a secondary (output) equal to the voltage required by the load.
		Load is a three phase induction motor, 25 horsepower @ 240 volts, 60 Hz and a heater load of 4 kilowatts @ 240 volts single phase.
	www.electricalpowertransformer.com /acme-transformer-selection.html (1112 words)

	589 LABORATORY MANUAL: Block K - Single-Phase Induction Motors
		The split phase motor is then selected for those intermediate applications where its starting torque is acceptable and the extra cost of the capacitor puts the capacitor start motor at an economic disadvantage.
		There should be three single phase induction motors per bench, machines C (1/4 hp, split-phase), E (1/12 hp, capacitor-start), and I (1/12 hp, split-phase).
		Set the storage oscilloscope in the storage mode, adjust the single phase variable autotransformer to 100% of 120 volts, turn it on and record peak starting current, the number of cycles required to go to steady state and the rms running current.
	www.eece.ksu.edu /~starret/589/man/K.html (1216 words)

	Three-Phase
		A sinusoidal voltage is proportional to the cosine or sine of the phase.
		The three phases could be supplied over six wires, with two wires reserved for the exclusive use of each phase.
		The blue and red vectors differ in phase by 30°, and in magnitude by a factor of √3, as is marked in the diagram.
	www.du.edu /~jcalvert/tech/threeph.htm (1406 words)

	single phase induction motor (Site not responding. Last check: 2007-10-08)
		Single Phase and Three Phase General Construction Purpose Electrical...
		The maker's plate with the electrical information states whether the motor is single phase or three...
		A three phase induction motor is selected to drive a particular load in a plant that operates...
	basetome.info /rp/im/single-phase-induction-motor (176 words)

	Eurotherm/Barber-Colman Eclipse Voltage/Power Transducers
		They are ideal for situations in which the characteristics of single and three phase AC power signals must be measured and retransmitted as isolated DC signals, such as in electrical heating applications.
		Single and three phase AC voltage inputs up to 500Vac may be converted into an isolated standard DC signal.
		Average sensing for sine waves and true RMS sensing for use with sine waves or distorted waveforms are available for single phase applications.
	www.eurotherm.com /products/power/eclipse.htm (321 words)

	Single-Phase Power
		The source of single-phase (10) power in all facilities is by generation from a single-phase generator or by utilization of one phase of a three-phase (30) power source.
		Basically, each phase of the 30 distribution system is a single-phase generator electrically spaced 120 degrees from the other two; therefore, a 30 power source is convenient and practical to use as a source of single-phase power.
		The choice of schemes, phase-to phase or phase-toground, allows several voltage options depending on whether the source three-phase system is a delta or wye configuration.
	www.tpub.com /doeelecscience/electricalscience2183.htm (507 words)

	Three phase convertors, single to 3 phase convertors
		Isomatic phase convertors, with 600% overload capability and no electromechanical contacts, are ideal for farms, workshops, garages, large buildings, etc. Isomatic Phase convertors primarily supplies the UK (Great Britain and Northern Ireland), the Republic of Ireland, Spain, Canary Islands, Ballearic Islands, Hungary, Turkey, Iran and other countries in Europe and the Middle East.
		Economic justification for using a single phase to 3 phase convertor.
		Unlike 'static' phase convertors, they are not limited to driving a single motor, nor do they limit the motor's torque or have a lower limit to output power.
	www.isomatic.co.uk /3phConvertor.htm (2377 words)

	Single phase
		A distinctive element in a construction of motors is the availability of the working capacitor, which is put into the container and is to be fastened to a stand.
		The main phase is connected directly to the network, the auxiliary phase is connected to the network through the working capacitor.
		The diagram of connecting the phases of a winding and switching of single-phase motors into the network is shown in a picture:
	www.uralelectro.ru /uraleng/new_1.htm (221 words)

	Leeson Single Phase Electric Motor characteristics and applications
		The split phase motor, also called an induction-start/induction-run motor, is probably the simplest single-phase motor made for industrial use, though somewhat limited.
		The cap-start/induction-run motor is more expensive than a comparable split phase design because of the additional cost of the start capacitor.
		And they're considered to be the most reliable of the single phase motors, mostly because no starting switch is needed.
	www.iprocessmart.com /leeson/leeson_singlephase_article.htm (1664 words)

	Single and Three Phase Power Analysers and Accessories from AVPower. (Site not responding. Last check: 2007-10-08)
		Single and Three Phase Power Analysers and Accessories from AVPower.
		Based in the UK, we are a leader in the design and manufacture of single and 3 phase AC power analysis and phase angle measurement instrumentation.
		Our Phase Meter offers 0.02 degree basic accuracy, 0.001 degree resolution, 0.1Hz - 700kHz operation, 5mV - 400V isolated floating inputs, phase computed by DFT analysis giving excellent noise rejection.
	www.avpower.com (148 words)

	Written-Pole® Single Phase Motors by Precise Power Corporation
		Single Phase Motors offer a revolutionary method for powering large horsepower applications in locations where only single-phase power is available.
		The result is a motor that combines the desirable starting characteristics of a high-slip, high-power factor cage motor with the energy-efficient operation of an AC permanent magnet motor-- without relying on power electronics, reduced voltage starters or phase converters.
		It can be expected to provide years of dependable service, even under demanding environmental conditions.
	www.precisepwr.com /single_phase_motors.asp (223 words)

	Single phase diesel generators powered by Kubota deisel engines.
		Single phase diesel generators powered by Kubota deisel engines.
		Diesel Generators - Single phase diesel generators built rugged with performance features in mind.
		It features silenced, weather-resistant steel housing, single point lifting bail, a fully lockable enclosure, reverse flow cooling, external service drains and much more.
	www.jobsite-generators.com /single_phase_diesel_generators.html (264 words)

	Single phase .5hp ac motor Information (Site not responding. Last check: 2007-10-08)
		Single Phase.5hp Ac Motor are great for when you're looking to get better at single phase.5hp ac motor for selfish purposes.
		If you need help locating single phase.5hp ac motor then you've come to the right place because we have all the single phase.5hp ac motor you could want.
		is the equivalent of a 5hp 230 volt 3 phase motor.
	ac.2greatsite7.info /ac-schnitzer/single-phase-.5hp-ac-motor.html (339 words)

	Single Phase Alternating Current - Hutchinson encyclopedia article about Single Phase Alternating Current (Site not responding. Last check: 2007-10-08)
		Single Phase Alternating Current is not available in the Hutchinson encyclopedia.
		Single Photon Absorptiometry (bond density test, measures the wrist)
		This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.
	encyclopedia.farlex.com /Single+Phase+Alternating+Current (93 words)

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