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Power Transformer

Power Transformer Specifications and Standards

A power transformer may be best defined as an electrical device aimed at transferring alternating current or voltage from one electric circuit to another through electromagnetic induction. Power transformers can have features for electrical isolation, power distribution, and control and instrumentation applications. Power transformers can be configured as either a single-phase primary configuration or a three-phase configuration.

The operating principle of power transformers is quite simple. The transformer basically consists of a number of coils of insulated wire wound on a laminated steel core. When voltage is introduced to one coil, known as the primary, it magnetizes the iron core. A voltage is then induced in the other coil, known as the secondary or output coil. The change of voltage between the primary and secondary coils depends on the turn ratio of the two coils.

Transformers are not restricted to one output coil. In fact, they can provide complete range of voltage sources from the one input coil by using separate windings on the secondary side. This makes transformers very versatile for supplying complete systems with all of their voltage requirements from one source.

Power transformers are the most common class of transformers and they have been built for a power of 1300 megavolt-amperes and a voltage of 750 kilovolts. Specifying a power transformer entails lot of research, hard-work, and knowledge. In reality though, you need to come up with a specification that would best suit your needs.

Power Transformers are designed and manufactured to meet specific customer requirements and specifications along with the applicable standards. The important specifications to consider when searching for power transformers include maximum secondary voltage rating, maximum secondary current rating, maximum power rating, and output type. A transformer may provide more than one secondary voltage value. The Rated Power of the transformer is the sum of the VA (Volts x Amps) for all of the secondary windings.

The function of power transformers is to convert one voltage to another at high power level. Power transformers are used in electronic circuits and come in many different types and applications. Power transformers are sometimes considered to be those with ratings of 300 volt-amperes and below. These transformers normally provide power to the power supply of an electronic device, such as in power amplifiers in audio receivers.

Power transformers can be designed either as a toroidal transformer or as a laminated transformer. Toroidal transformers have copper wire wrapped around a cylindrical core so the magnetic flux, which occurs within the coil, doesn't leak out. Besides, the coil efficiency is perfect and the magnetic flux has little influence on other components. Laminated transformers, on the other hand contain laminated-steel cores and they are known as E-I transformers. These steel laminations are insulated with a non-conducting material like varnish, and then formed into a core that reduces electrical losses.

Power transformers can be one of several different types. These include autotransformer, control transformer, current transformer, distribution transformer, general-purpose transformer, instrument transformer, isolation transformer, potential (voltage) transformer, power transformer, step-up transformer, and step-down transformer. Again, there are different types of mountings for power transformers that include chassis mount, dish or disk mount, enclosure or free standing, h frame, and PCB mount.

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MTH Z 4000 Hobby Transformer Power Supply 400 Watts Factory Sealed O Gauge Power
MTH Z 4000 Hobby Transformer Power Supply 400 Watts Factory Sealed O Gauge Power
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LIONEL LEGACY 1L COMMAND BASE O GAUGE train power pack control 6 37156 NEW
LIONEL LEGACY 1L COMMAND BASE O GAUGE train power pack control 6 37156 NEW
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Lionel 36 Watt LionChief Power Supply Transformer 2016
Lionel 36 Watt LionChief Power Supply Transformer 2016
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LIONEL 0103 HO POWER PACK TRANSFORMER INSTRUCTIONS ORIGINAL
LIONEL 0103 HO POWER PACK TRANSFORMER INSTRUCTIONS ORIGINAL
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MTH Z 750 Transformer Power Supply NIB
MTH Z 750 Transformer Power Supply NIB
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Lionel Type 1033 90 Watt Transformer Layout Ready New Power Chord + Bonus K
Lionel Type 1033 90 Watt Transformer Layout Ready New Power Chord + Bonus K
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LIONEL TRANSFORMER ACCESSORY 2 PACK o gauge building scenery train 6 83215 NEW
LIONEL TRANSFORMER ACCESSORY 2 PACK o gauge building scenery train 6 83215 NEW
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10 Lionel L Power Cords B 292 for Lionel transformers 10 Total Free Shipping
10 Lionel L Power Cords B 292 for Lionel transformers 10 Total Free Shipping
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LIONEL TRANSFORMER power supply pack train AC control CW 80 FREE SHIPPING NEW
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LIONEL O GAUGE FASTRACK LIONCHIEF PLUS 72 WATT POWER SUPPLY wire 6 81603 NEW
LIONEL O GAUGE FASTRACK LIONCHIEF PLUS 72 WATT POWER SUPPLY wire 6 81603 NEW
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MTH Z 500 Transformer Power Supply BUY IT NOW with FREE SHIPPING
MTH Z 500 Transformer Power Supply BUY IT NOW with FREE SHIPPING
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Vintage LIONEL Type TW Train Master Electric Transformer Power Supply Post War R
Vintage LIONEL Type TW Train Master Electric Transformer Power Supply Post War R
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Lionel 1038 30 Watt Train Transformer Nice Pliable Power Chord
Lionel 1038 30 Watt Train Transformer Nice Pliable Power Chord
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LIONEL FASTRACK ACCESSORY CONNECTION TRACK POWER WIRE lockon connector 6 12053
LIONEL FASTRACK ACCESSORY CONNECTION TRACK POWER WIRE lockon connector 6 12053
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Lionel Fastrack CW Transformer Terminal Track Power Wire Connector 48 S T
Lionel Fastrack CW Transformer Terminal Track Power Wire Connector 48 S T
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LIONEL FASTRACK LOCK ON POWER TERMINAL WIRE CONNECTOR TRANSFORMER Black S 30
LIONEL FASTRACK LOCK ON POWER TERMINAL WIRE CONNECTOR TRANSFORMER Black S 30
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Lionel Fastrack CW Transformer Terminal Track Power Wire Connector 48 S Spade
Lionel Fastrack CW Transformer Terminal Track Power Wire Connector 48 S Spade
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Lionel 1038 30 Watt Train Transformer Nice Power Cord  Good Plug w Box
Lionel 1038 30 Watt Train Transformer Nice Power Cord Good Plug w Box
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Lionel Trains PH 1 Trainmaster Power Supply Transformer JS 18731 NA F006
Lionel Trains PH 1 Trainmaster Power Supply Transformer JS 18731 NA F006
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Lionel 54 Watt LionChief Power Supply Transformer 2016 17
Lionel 54 Watt LionChief Power Supply Transformer 2016 17
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LIONEL CW 40 WATT TRANSFORMER train power pack source control CW40 6 81495 NEW
LIONEL CW 40 WATT TRANSFORMER train power pack source control CW40 6 81495 NEW
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LIONEL TRAIN TRANSFORMER power pack source O GAUGE CW 80 14198 NEW IN BOX NEW
LIONEL TRAIN TRANSFORMER power pack source O GAUGE CW 80 14198 NEW IN BOX NEW
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Lionel O27 Track Oval w Transformer uncouple unload track and power leads
Lionel O27 Track Oval w Transformer uncouple unload track and power leads
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Power Repair Kit for Lionel Transformer KW w L Power Cord C 10
Power Repair Kit for Lionel Transformer KW w L Power Cord C 10
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LIONEL CW 80 WATT TRANSFORMER IN BOX train 6 14198 NEW in LIONEL ORANGE BOX
LIONEL CW 80 WATT TRANSFORMER IN BOX train 6 14198 NEW in LIONEL ORANGE BOX
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LIONEL LEGACY LAYOUT CONTROL SYSTEM DB9 POWER SUPPLY  CABLE o gauge 6 81499 NEW
LIONEL LEGACY LAYOUT CONTROL SYSTEM DB9 POWER SUPPLY CABLE o gauge 6 81499 NEW
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LIONEL TRAIN CW 80 80 Watt TRANSFORMER Train Power Supply IN LIONEL ORANGE BOX
LIONEL TRAIN CW 80 80 Watt TRANSFORMER Train Power Supply IN LIONEL ORANGE BOX
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Lionel VW transformer 150 watts Run 4 trains whistle direction Classic Power pak
Lionel VW transformer 150 watts Run 4 trains whistle direction Classic Power pak
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Thordarson T 62618 AC Power Transformer 110 VAC To 20 VAC For Model Trains
Thordarson T 62618 AC Power Transformer 110 VAC To 20 VAC For Model Trains
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LIONEL POSTWAR ZW MULTICONTROL 4 TRAIN TRANSFORMER HAS POWER NEEDS SERVICE
LIONEL POSTWAR ZW MULTICONTROL 4 TRAIN TRANSFORMER HAS POWER NEEDS SERVICE
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MTH Trains Z 750 Train Hopper Transformer 75 Watts Power Supply
MTH Trains Z 750 Train Hopper Transformer 75 Watts Power Supply
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LIONEL ACCESSORY OR POWER TERMINAL WIRE lockon connector track transformer
LIONEL ACCESSORY OR POWER TERMINAL WIRE lockon connector track transformer
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LIONEL 80 WATT TRAIN TRANSFORMER track power pack O GAUGE CW 80 SALE
LIONEL 80 WATT TRAIN TRANSFORMER track power pack O GAUGE CW 80 SALE
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MTH Z 1000 TRANSFORMER AC POWER BRICK train track power pack o gauge 40 1000 NEW
MTH Z 1000 TRANSFORMER AC POWER BRICK train track power pack o gauge 40 1000 NEW
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MTH Z 750 Hobby Transformer Power Unit 21V AC 375A 78VA
MTH Z 750 Hobby Transformer Power Unit 21V AC 375A 78VA
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Vintage Lionel Prewar 150 Watt Type K Transformer and Tabtron Teksel Power Unit
Vintage Lionel Prewar 150 Watt Type K Transformer and Tabtron Teksel Power Unit
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LIONEL CW 80 Watt Transformer Train Track Power Supply
LIONEL CW 80 Watt Transformer Train Track Power Supply
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WOODLAND SCENICS POWER SUPPLY FOR JUST PLUG LIGHTING SYSTEM wds 24 VDC JP 5770
WOODLAND SCENICS POWER SUPPLY FOR JUST PLUG LIGHTING SYSTEM wds 24 VDC JP 5770
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MTH Z 4000 Hobby Transformer Power Supply 400 Watts O Gauge Dual Control w Box
MTH Z 4000 Hobby Transformer Power Supply 400 Watts O Gauge Dual Control w Box
$375.00
Lionel 1033 Transformer 90 Watts of power Updated Cleaned watch video A
Lionel 1033 Transformer 90 Watts of power Updated Cleaned watch video A
$80.00


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