Auto-transformers

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Auto-transformers | Choosing the right transformer
There are 5 main types of technology for transformers. Voltage transformer The voltage transformer makes it possible to modify the voltage and current delivered by an alternative electrical source while maintaining the same frequency. This transformation is carried out efficiently. Three-phase transformer The three-phase transformer allows the transformation of the voltage and current of three phases at the same time. This means you don’t have to use...
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distribution auto-transformer
distribution auto-transformer

... power transformers that can connect to AC networks of different voltage levels to allow power exchange and handle requirements of each individual network. These are the called the PTR L1 Transfo-MD Interconnection Transformers ...

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Alstom Grid
power auto-transformer
power auto-transformer
AUTFX series

Output power kVA: 1 kVA - 1,000 kVA
Primary voltage: 800 V
Secondary voltage: 400 V

Dry type autotransformer. All autotransformers are tropicalized with anti-flash varnish: • Protection against corrosive environments. • Greater electrical insulation. • High compaction power. • ...

power auto-transformer
power auto-transformer
AUTNX series

Output power kVA: 1 kVA - 400 kVA
Primary voltage: 400 V
Frequency: 50, 60 Hz

Dry type autotransformer Anti-flash varnish finish, offering: • Protection against corrosive environments • Increase of electrical isolation • High compression capacity • Reduction of noise level • Increase of ...

power auto-transformer
power auto-transformer
PAU series

Output power kVA: 0.1 kVA - 12.5 kVA
Primary voltage: 400 V
Secondary voltage: 230 V

Dry type transformer IP-20 enclosure: Safety class I, convertible in class II up to 6300 VA Includes LED functioning indicator Optional protection fuse Possibility of tailor-made manufacturing

distribution auto-transformer
distribution auto-transformer
RA1F250.031

Primary voltage: 230 V
Secondary voltage: 0 V - 230 V
Primary current: 3.1 A

... variable autotransformers are designed to power AC electrical equipment. Robust metal construction, high-quality transformer and linear voltage regulation are used in all areas of electrical engineering. Properties ...

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Diametral a.s.
distribution auto-transformer
distribution auto-transformer
RA1F250.100

Primary voltage: 230 V
Secondary voltage: 0 V - 230 V
Primary current: 10 A

Single-phase and three-phase variable autotransformers are designed to power AC electrical equipment. Robust metal construction, high-quality transformer and linear voltage regulation are used in all ...

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Diametral a.s.
distribution auto-transformer
distribution auto-transformer
RA1F250.200

Primary voltage: 230 V
Secondary voltage: 0 V - 230 V
Primary current: 20 A

... variable autotransformers are designed to power AC electrical equipment. Robust metal construction, high-quality transformer and linear voltage regulation are used in all areas of electrical engineering. Properties ...

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Diametral a.s.
electrical power supply auto-transformer
electrical power supply auto-transformer
D0G series

Electric power: 13 kVA
Primary voltage: 140, 260 V

Characteristics: Type:Autotransformer Designed for: strict waterproof requirement Type of phase:single-phase Capacity: 5-50KVA Rated voltage:140V/260V Insulation:F/H Operating frequency:47.5-52.5Hz Protection ...

power auto-transformer
power auto-transformer
TE / TD

Transformers for switch cabinet installation TE / TD Auto-transformers (according to VDE 0550) for single-phase AC or three-phase current with 5 taps, mounting pads and connection terminals. The maximum ...

current auto-transformer
current auto-transformer
SUNTEK

Electric power: 500 W
Output power kVA: 0.5 kVA
Primary voltage: 0 V - 250 V

... conventional transformer is increased efficiency, due to partial change in power. The autotransformer in our time has found wide application both for industrial purposes and in everyday life. Variac ...

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Electrosheriff
current auto-transformer
current auto-transformer
SUNTEK

Electric power: 1,000 W
Output power kVA: 1 kVA
Primary voltage: 0 V - 250 V

... conventional transformer is increased efficiency, due to partial change in power. The autotransformer in our time has found wide application both for industrial purposes and in everyday life. Variac ...

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Electrosheriff
current auto-transformer
current auto-transformer
SUNTEK

Electric power: 2,000 W
Output power kVA: 2 kVA
Primary voltage: 0 V - 250 V

... conventional transformer is increased efficiency, due to partial change in power. The autotransformer in our time has found wide application both for industrial purposes and in everyday life. Variac ...

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Electrosheriff
dry auto-transformer
dry auto-transformer

Primary voltage: 0.5 V - 1,000 V
Secondary voltage: 0.5 V - 1,000 V

... It is possible to add cut-off fuses or even auto resettable thermal protectors that act if windings overheat and if the transformer temperature drops. After that it works again automatically. - Transformers ...

isolation auto-transformer
isolation auto-transformer
ESP 230/1,5

Primary voltage: 230, 400 V
Secondary voltage: 80 V - 310 V
Secondary current: 0.8 A - 18 A

... BLOCK IMPEX vacuum impregnation High efficiency Low weight and small size (compared to isolating transformers) Applications Autotransformer for example for setting the speed of single-phase fan motors.

power auto-transformer
power auto-transformer
VT-EN series

Electric power: 0.15 kVA - 3 kVA
Primary voltage: 110, 125, 230, 240 V
Secondary voltage: 110, 125, 230, 240 V

... ambient temperature 40 °C Degree of protection IP 00 Advantages Low weight and small size (compared to isolating transformers) Very high efficiency Very good moisture protection and low noise thanks ...

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Block Transformatoren-Elektronik
distribution auto-transformer
distribution auto-transformer

Electric power: 50,000 kVA - 1,000,000 kVA

... Three-phase autotransformers with taps at the common neutral end are the common links between the 400 kV and 275 kV `SuperGrid`networks. It is made with a common windind and a separate low voltage winding. Auto ...

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CG Power Systems
distribution auto-transformer
distribution auto-transformer

Electric power: 1,200,000 kVA

In 2012, SPX Transformer Solutions began shipping Large Power Waukesha® Transformers from its expanded facility in Waukesha, Wisconsin. This 154,000 square foot expansion increased SPX Transformer ...

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SPX Transformer Solutions
power auto-transformer
power auto-transformer
TR 24 series

Single-phase reversible autotransformers, especially intended for use as a voltage adapter when an economical solution is required in applications where the galvanic isolation or attenuation of disturbances are not required. ...

isolation auto-transformer
isolation auto-transformer
ARM series

Primary voltage: 230 V
Secondary voltage: 230, 180, 155, 135, 115 V
Secondary current: 1.5 A - 14 A

ARM - TRANSFORMERS FOR SPEED CONTROLLER Autotransformer fan speed controllers serve the purpose of airflow control. Designed for installation in ventilation and heating systems. The transformers ...

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BREVE-Tufvassons
electrical power supply auto-transformer
electrical power supply auto-transformer
LFA series

Output power kVA: 0.07 kVA - 1.7 kVA
Primary voltage: 115, 230 V
Secondary voltage: 230, 115 V

... cut out" fuse on primary side. Portable autotransformer for changing system voltage. Autotransformers are not able to eliminate earth faults, all earth fault problems will be propagated through the ...

isolation auto-transformer
isolation auto-transformer
20 series

Electric power: 72, 490 W
Output power kVA: 0.16 kVA - 24 kVA
Primary voltage: 400 V

For a « step-down » autotransformer, the high voltage is applied to the complete winding, and the low voltage is obtained between an ending point of the winding and an intermediate tap. Unlike isolating transformers, ...

power auto-transformer
power auto-transformer

Electric power: 0 W - 5,000,000 W

Technical features Power : Up to 5000 kVA Frequency : 50-60 Hz Isolators : Class F or H Winding : Class HC-200ºC Protection degree : IP-00 to IP-65 Nema 1 to Nema 4X Environment Temperature : 40ºC Standards : UNE-EN 61558-2-1 UNE ...

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EREMU
power auto-transformer
power auto-transformer

Motor Starting Applications These are auto transformers and reactors used in systems to restrain the start up current and allow a smooth start up in asynchronous motors of high power 1.) Auto ...

power auto-transformer
power auto-transformer
TAB 200

Electric power: 200 W
Primary voltage: 110, 130, 230, 240 V
Secondary voltage: 110, 130, 230, 240 V

Single-phase autotransformer - IP00 - U 0-110-130-230-240V - Power 200VA Electrical Characteristics Power (VA): 200 Primary Voltage (Vac): 0-110-130-230-240 Secondary Voltage (Vac): 0-110-130-230-240 Frequency ...

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EREA Transformers
electrical power supply auto-transformer
electrical power supply auto-transformer

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Martignoni Elettrotecnica
distribution auto-transformer
distribution auto-transformer
T2530 series

Electric power: 1 kVA - 15 kVA
Primary voltage: 240 V
Secondary voltage: 120, 240 V

Auto-Transformers 240 Primary Volts - 120/240 Secondary Volts - 1Ø, 60Hz

distribution auto-transformer
distribution auto-transformer

Electric power: 390,000 kVA - 1,000,000 kVA
Primary voltage: 161 kV

Product Item : Power Transformer (161kV grade and below) Specification : Max. actual performance capacity: 390MVA, Rated capacity: 1000MVA. Features: 1. Technical transfer, self-development and 3D software application. ...

power auto-transformer
power auto-transformer
DTSP

Electric power: 0.1 kVA - 10 kVA
Primary voltage: 50 V - 1,000 V
Secondary voltage: 12 V - 1,000 V

... point: 10% of nominal current For versions with increased climate resistance, the transformer is supplied with a specially insulated finish. The finish allows the transformer to be used in areas of high humidity.

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Trafomodern Transformatorengesellschaft
distribution auto-transformer
distribution auto-transformer

Primary voltage: 120 kV - 500 kV

... voltages, large auto-transformers are used to interconnect the 400kV-500kV systems with either the 230kV-275kV systems or 120kV-145kV systems (the exact values depend on the country being considered). ...

dry auto-transformer
dry auto-transformer

Secondary voltage: 115 V - 400 V

• Compliant with standard EN 61558-2-13 a• Can be reversed • Protection rating IP00 • Electrical protection rating I • Thermal insulation class B • Fixing brackets compliant with DIN standards • Connection terminals IP 20

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ced
distribution auto-transformer
distribution auto-transformer

Electric power: 36 kVA - 63,000 kVA

... HV/MV transformers and MV/MV transformers are available upon request. The HV/MV model operate at a maximum of 170 kV and 63 mVA, while the MVMV operate at a maximum of 36kV and 63 MVA.

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