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We have come up with a great range of Industrial Transformers including Low Voltage Transformers, Isolation Transformers, Rectifier Transformers, Air Cooled Transformers, Air Cooled Transformers, Oil Cooled Variable Auto Transformer, Variable Auto Transformer and Air Cooled Variable Auto Transformer. These different kinds of transformers are playing a vital role in varied industries.
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Low Voltage Transformers SEI makes transformers with input and output voltage upto 3.3 KV single phase or 3 phase upto 200 KVA capacity suitable for 50 / 60 Hz supply. Low voltage transformers are also made suitable for other frequencies such as 400 Hz, SEI also makes special types of electronic low voltage transformers such as 3 phase to 2 phase transformers (Scot connected transformers) & 3 3 phase to 1 Phase transformer, within above voltage and power limits. These low voltage transformers are available in different thermal classes A, B, F, H & C.SEI Transformers confirm to IS 2026, IS11171, BS 171. Transformers are also made to confirm other national and intrnational standards against specific requirments. Electronic low voltage transformers are supplied either in open execution for incorporating in user panel or in sheet metal enclosures which are mostly for indoor application. For outdoor duty transformers are supplied in oil cooled construction. Oil cooled transformers are also prefered for heavy duty individual applications. Salient Features: - Use of high quality non-aging silicon steel lamination used for core, keep the iron losses minimum.
- Use of electrolytic grade copper & aluminium conductor ensures the better regulation and low load losses.
- Use of appropriate grade insulating material eliminates the possibility of premature failure due to insulation failure.
- Transformers are impregnated in proper grade varnish after thoroughly drying which adds strength to the transformer to fight against atmospheric moisture and eroding chemical fumes.
- Low audible noise level
- Careful designing and quality control at every stage in manufacturing ensures a high quality transformer which gives a long trouble-free service
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Isolation Transformers We offer our premium quality isolation transformers, which are precision engineered to provide low noise electric power for various sensitive equipment like mainframe computers, laboratory instruments etc. These ultra isolation transformer also provide the equipment full protection from any kind of power disturbance, surges, spikes, shocks etc, which cause failure of electronic circuits, shortening of equipment life and ultimately lead to heavy losses of production. Isolation transformer developed by us are mainly used for decoupling the two circuits as well as to allow the power without connecting two circuits electrically. The internal electromagnetic and electrostatic shield of ultra isolation transformer breaks the capacitive coupling between the primary & secondary windings and remove noise from the power line. These isolation transformers are also used as power transformer & safety precaution. Salient Features :Battery chargers are designed and made to customer's individual specifications which vary widely. Broad specifications which cover most of the application are: - Rugged construction
- EMI/RFI noise free power supply
- Excellent insulation resistance
- Low line leakage current
- Low losses
Applications :Isolation transformers are extensively used in medical equipment, telecommunication equipment, remote control equipment, computers & peripherals, CNC machines, analytical instruments etc. | |
Rectifier Transformers Rectifier Transformers are used to convert three phase power supply to quality DC power supply. Some of the rectifying transformers units are also suitable for use in severe environments and comply to military standards. Regulated output rectifier transformers provide excellent output voltage regulation for varying line and load conditions. Salient Features : - Available in various models.
- There are options for free, forced or fan cooling
- Regulated configurations with tight voltage control
- Unregulated configurations for simplicity and reliability
- Features clean input power with low harmonic distortion
- Provided with thermal sensor trip and fan fail signal
- They have minimum output current ranging from 50 A to 400 A
- Transformer rectifiers are highly efficient and requires minimum maintenance
Advantage of Transformer RectifiersOne of the advantages of transformer rectifiers is that they are suitable for powering 28 V DC busses consisting of emergency back-up batteries. These rectifiers provide the essential benefits and simplicity of a standard transformer rectifier unit. Uses & ApplicationsTransformer rectifier finds wide application in areas like: - Military aircrafts and fighters
- Commercial transport aircraft
- Helicopters
- Trainers
- Avionics
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Air Cooled Transformers We offer our range of premium quality Air Cooled Transformers, which cater to the demands of different industries. These industrial air cooled transformers are developed using cutting edge technology under the supervision of expert professionals. We have used superior quality raw material to manufacture these air cooled transformers, which impart them high durability. Salient Features : - Reliable and long lasting
- Efficient power back-up
- Continuous operation
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Oil Cooled Transformers We offer our range of premium quality Oil Cooled Transformer, which cater to the demands of different industries. These three phase oil cooled transformer are developed using cutting edge technology under the supervision of expert professionals. We have used superior quality raw material to manufacture these oil cooled transformer, which impart them high durability. Salient Features : - Available in various models.
- Reliable and long lasting
- Efficient power back-up
- Continuous operation
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Variable Auto Transformer We present high-precision variable voltage auto transformer that is simple and provide a variable voltage output from the fixed input voltage. It is very effective in controlling A.C. Voltage such as A.C. current, D.C. voltage & current intensity of light & heat, and speed of D.C. motors. These transformers confirm to IS 5142-1969 and are suitable for a wide range of current and voltage (240 V & 415 V) and 3 phase supply. These single phase auto transformer and three phase auto transformer are suitable for places which require a smooth voltage.
The core of the auto transformer is made of high grade, non aging continuous CRGO strip and carefully annealed that results in low magnetizing current and core losses. The output is linear and this transformer does not produce any distortion in the wave form. It can withstand heavy overloads of short durations such as starting currents of motors. These single phase auto transformer and three phase auto transformer give an uninterrupted service in tropical areas.
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Air Cooled Variable Auto Transformer Air Cooled Variable Auto Transformer VARIPaC is a “Continuously variable voltage auto transformer” with many distinct advantages. It is a simple but versatile tool in the hands of engineers and technicians. It provides a steplessly variable voltage output from the fixed input voltage. In turn all the derivatives of A.C. Voltage such as A.C. Current, D.C. Voltage & current, intensity of light & heat, speed of D.C. Motors etc. can be controlled effectively.
Specifications Types and Models
VARIPaC is identified by its output current rating which remains constant throughout its operating range.
VARIPaCs are made in wide range of current and voltage suitable for 1 pH (240 V & 415 V) & 3 phase supply to cater the every need of industry. | INPUT VOLTAGE | OUTPUT VOLTAGE | | 240 V 1 PH | 0 - 240/ 270 V | | 415 V 1 PH | 0 - 415 /470 V | | 415 V 3 PH | 0 - 415 /470 V | Every VARIPaC comes with two alternative connections for input. In “Line Voltage Connection” max. output voltage is equal to input line voltage & in “Over Voltage Connection”, the max. voltage output is 12% above the input voltage. OUTPUT CURRENTS : 2, 4, 6, 8, 10, 12, 15, 20, 25, 28, 40, 50, 60, 75, 100, 150 & 200 Amps. FREQUENCY : 50/60 Hz OPERATING MODE Manual, Where the output is varied manually by the knob provided on the shaft. Motorised: Brush arm driven by a drive motor coupled to the shaft. The drive motor used in slow speed, high torque, AC synchronus motor working on 230/240V, 1pH,50Hz supply. The drive motor is reversible, having instant start, stop and reverse characteristics. Standard timings for complete rotation available are 8, 15, 30 & 60 secs. ApplicationsVARIPaC is useful in innumerable places wherever smooth variation of voltage and its derivatives is required. To list few: - Speed control of D.C. Motors
- Adaptable for remote control applications.
- Stage and auditorium lighting
- Temp. control and regulation of furnaces, ovens etc.
Salient Features - Core is made of high grade, non aging continuous CRGO Strip, and carefully annealed; resulting in low magnetising current and core losses.
- Variation in output voltage is by transformer action by changing number of turns included in the circuit.
- Variation in the output is linear. Dial indicates the approximate output voltage at no load (for rated input voltage). Dials are also available marked in percentage.
- VARIPaC does not produce any distortion in any wave form.
- VARIPaC can withstand heavy overloads of short durations such as starting currents of motors.
- Brush holders made of rectangular section (as against the squares), eliminate the possibility of its fixing in wrong direction and consequent burning of winding.
- Use of precision machined components ensure the uniform-operating torque for brush arm.
- A specially designed spring holds the carbon brush pressed uniformly against the commutator surface, provides a firm contact and eliminates sparking at commutator.
- VARIPaC is fully tropicalised to give an uninterrupted service in tropical atmosphere.
- VARIPaC confirms to IS 5142 – 1969
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Oil Cooled Variable Auto Transformer Oil Cooled Variable Auto Transformer are basically cooled, floor mounting construction, immersed in transformer oil, confirming to IS 335. Cores are rigidly mounted on non magnetic frame and high grade carbon brushes collect the current from side of the wingdings. Full variation of the output from 0 to max. value is available in one revolution (approximately 350°) of the handle. Units are supplied without oil. Standard transformer oil is to be filled by the user at site. Besides manual operation, these are also available in motor operated mode with shaft driven by a high torque low speed drive motor through a gear train. Time taken for one revolution is 15 seconds upto 100 Amp models & 30 second for above 100 amp models. Higher timings can be provided on request. SpecificationsStandard models are made to the following specifications | | 1 Phase | 1 Phase * | 3 Phase | | Input | 230 V | 400 V 1 Phase | 400 V 3 Phase | | Output | 0-230V/270V | 0-400/ 470V | | Current | 40, 50, 60, 75, 100, 150, 200, 300, 400, 500 & 600 amps. | | Frequency | 50/60 HZ | | Insulation Class | A | *Many a times these are referred as 2 phase units as the input to these units is from 2 lines of 3 phase supply Salient Features:
- Wingdings are made of electrolytic copper conductor
- Cores made from low loss, non aging high grade silicon steel
- Radiators have been provided for effective cooling wherever required
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Single Phase Transformer We are one of the leading suppliers of Single Phase Transformers, which are appreciated by our clients for versatile applicability and high tensile strength. These are generally used in rural areas and places and are known for low cost operations. Our range is fabricated from epoxy resin of Class-F-insulation and thus ensure unmatched quality, wonderful performance and long service life. However, Our single phase transformers are offered with different technical specifications in customized packings for safe delivery. | |
3 Phase Transformer We are specialized in offering our clients with 3 phase transformers that are designed using finest raw material. These transformers are widely used for lighting and heating applications and can also be customized as per the details provided by our valued clients. Appreciated by clients for excellent durability and superior performance, these 3 phase transformers are playing an important role in maintaining a polarity in the transformer. We offer our range of 3 phase transformers at market leading rates to clients. | |
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