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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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Marx 709 Power Pack Transformer
Marx 709 Power Pack Transformer
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LIONEL O GAUGE FASTRACK LIONCHIEF POWER SUPPLY 100 240VAC 60Hz 85A 6 37191 36
LIONEL O GAUGE FASTRACK LIONCHIEF POWER SUPPLY 100 240VAC 60Hz 85A 6 37191 36
$14.84
LIONEL Type TMCC Conventl Transformer TPC TIU to Fastrack Power Cables 2
LIONEL Type TMCC Conventl Transformer TPC TIU to Fastrack Power Cables 2
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MTH Z 1000 Transformer Power Unit  Z Controller Unit EXIB
MTH Z 1000 Transformer Power Unit Z Controller Unit EXIB
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MTH Z 750 Transformer Power Unit  IR Controller
MTH Z 750 Transformer Power Unit IR Controller
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LIONEL O GAUGE FASTRACK LIONCHIEF POWER SUPPLY 100 120V 60HZ 05A 6 37191 31
LIONEL O GAUGE FASTRACK LIONCHIEF POWER SUPPLY 100 120V 60HZ 05A 6 37191 31
$14.84
LIONEL 180 WATT POWERHOUSE AC POWER SUPPLY TMCC track controller 6 22983 NEW
LIONEL 180 WATT POWERHOUSE AC POWER SUPPLY TMCC track controller 6 22983 NEW
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LIONEL FASTRACK 40x60 OVAL LIONCHIEF TERMINAL EXPAND PLAY  POWER BRICK pnp NEW
LIONEL FASTRACK 40x60 OVAL LIONCHIEF TERMINAL EXPAND PLAY POWER BRICK pnp NEW
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Lionel Alaska GP 7 O Scale Powered Diesel Loco 6 28857 w Lionel Transformer
Lionel Alaska GP 7 O Scale Powered Diesel Loco 6 28857 w Lionel Transformer
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Gilbert American Flyer Pike Mastertoy transformer power pack
Gilbert American Flyer Pike Mastertoy transformer power pack
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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 6 24253 PowerMax Plus Transformer O Gauge Train Power Max Controller
Lionel 6 24253 PowerMax Plus Transformer O Gauge Train Power Max Controller
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MILLER ENGINEERING 4804 BATTERY POWER PACK CONVERTER MODULE for Neon HO N Gauge
MILLER ENGINEERING 4804 BATTERY POWER PACK CONVERTER MODULE for Neon HO N Gauge
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MTH 40 750 Z 750 TRANSFORMER with WIRELESS CONTROLLER  POWER BRICK
MTH 40 750 Z 750 TRANSFORMER with WIRELESS CONTROLLER POWER BRICK
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ALLSTATE 6030 AS POWER PACK TOY TRANSFORMER VINTAGE
ALLSTATE 6030 AS POWER PACK TOY TRANSFORMER VINTAGE
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MTH Z 750 TRANSFORMER POWER UNIT brick only
MTH Z 750 TRANSFORMER POWER UNIT brick only
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LIONEL LW TRANSFORMER 125 WATTS OF POWER
LIONEL LW TRANSFORMER 125 WATTS OF POWER
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L embossed Lionel Power Cord Replacement For Transformers 6 ft 18 AWG tinned
L embossed Lionel Power Cord Replacement For Transformers 6 ft 18 AWG tinned
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LIONEL VINTAGE TRAINMASTER TRANSFORMER TYPE R110 POWERS ON
LIONEL VINTAGE TRAINMASTER TRANSFORMER TYPE R110 POWERS ON
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Vintage LIONEL Transformer 1033 90 watt Power Pack
Vintage LIONEL Transformer 1033 90 watt Power Pack
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Vintage LIONEL Transformer 1033 90 watt Power Pack 2
Vintage LIONEL Transformer 1033 90 watt Power Pack 2
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MTH Z 4000 Hobby Transformer Power Supply 400 Watts Factory Sealed Shipping Box
MTH Z 4000 Hobby Transformer Power Supply 400 Watts Factory Sealed Shipping Box
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Lionel 80 Watt Transformer Train Power Source Supply Controller 6 14198 CW 80
Lionel 80 Watt Transformer Train Power Source Supply Controller 6 14198 CW 80
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LIONEL FLATCAR WITH TRANSFORMER 6 31784 conventional classic o gauge train 6818
LIONEL FLATCAR WITH TRANSFORMER 6 31784 conventional classic o gauge train 6818
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TRANSFORMER HEAVY DUTY REPLACEMENT POWER CORD
TRANSFORMER HEAVY DUTY REPLACEMENT POWER CORD
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3 LIONEL B 292 L POWER CORDS FOR LIONEL TRANSFORMERSZWRWKW1033 SWLW1044
3 LIONEL B 292 L POWER CORDS FOR LIONEL TRANSFORMERSZWRWKW1033 SWLW1044
$10.25
LIONEL FASTRACK CURVED POWER WIRE TERMINAL TRACK train o gauge 6 37103 031 TERM
LIONEL FASTRACK CURVED POWER WIRE TERMINAL TRACK train o gauge 6 37103 031 TERM
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50 Lionel L Power Cords 292 for Lionel transformers 50 Total Free Shipping
50 Lionel L Power Cords 292 for Lionel transformers 50 Total Free Shipping
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MTH Z 500 power supply transformer
MTH Z 500 power supply transformer
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Lionel 1038 Power Pack Transformer Box Only
Lionel 1038 Power Pack Transformer Box Only
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3 LIONEL B 292 L POWER CORDS FOR LIONEL TRANSFORMERSZW1033 RWKW SWLW1044
3 LIONEL B 292 L POWER CORDS FOR LIONEL TRANSFORMERSZW1033 RWKW SWLW1044
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10 L POWER CORDs FOR LIONEL TRANSFORMERS 4090 MPC Era HEAVY DUTY Free Shipping
10 L POWER CORDs FOR LIONEL TRANSFORMERS 4090 MPC Era HEAVY DUTY Free Shipping
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LIONEL FASTRACK 036 CIRCLE LIONCHIEF RC TERMINAL  POWER layout 6 12015 RCT NEW
LIONEL FASTRACK 036 CIRCLE LIONCHIEF RC TERMINAL POWER layout 6 12015 RCT NEW
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LIONEL FASTRACK TERMINAL TRAIN TRACK connection wires fast fasttrack 6 12016 NEW
LIONEL FASTRACK TERMINAL TRAIN TRACK connection wires fast fasttrack 6 12016 NEW
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Lionel Prewar Type T 100 Watt Transformer A Plethora of Power O
Lionel Prewar Type T 100 Watt Transformer A Plethora of Power O
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Lionel Type LW 125 Watt Transformer Layout Ready Good Power Cord Nice A
Lionel Type LW 125 Watt Transformer Layout Ready Good Power Cord Nice A
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Lionel Type LW 125 Watt Transformer Layout Ready New Power Cord Nice F
Lionel Type LW 125 Watt Transformer Layout Ready New Power Cord Nice F
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L POWER CORD FOR LIONEL TRANSFORMERS 4090 MPC Era etc HEAVY DUTY Free Shipping
L POWER CORD FOR LIONEL TRANSFORMERS 4090 MPC Era etc HEAVY DUTY Free Shipping
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Vintage K Line Track  Power Supply Transformer
Vintage K Line Track Power Supply Transformer
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2 L POWER CORDs FOR LIONEL TRANSFORMERSZWKWSWTW1033 HEAVY DUTY FREE SHIP
2 L POWER CORDs FOR LIONEL TRANSFORMERSZWKWSWTW1033 HEAVY DUTY FREE SHIP
$10.99


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