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AUTO TRANSFORMERS – UNIT I |
GENERAL FEAUTURES |
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We have Introduced our indigenously developed Auto Transformers in the year 1996. Since than we are one of the leading manufacturer in the country for quality Auto Transformers
We manufacture wide range of auto transformers suitable for indoor & outdoor applications with wide current range from 4A to 300A both in Air & oil Cooled models. We have supplied thousands of these transformers to various industries in India. Quality of our transformers is well patronized with repeat orders from our customers. The plant is well equipped with most modern machinery & Testing Equipments to conduct tests as per IS: 5142 with an installed capacity of 50000 units per annum. |
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DESIGN: |
| Our research team has developed design features and proprietary process providing long lasting, more reliable products. Particularly to withstand high temperatures and faster and dissipation of heat generated. |
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VOLTAGE RATINGS: |
| Single auto transformers are rated either at 240v AC or 120v AC, for 1ph application one coil is used, for 2ph application two coils is used, for 3ph application three coil is used. For some applications connected in series to withstand high voltages. |
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CURRENT RATINGS: |
Air cooled from 4 amps to 300 amps in 1ph, 2ph, 3ph
Oil cooled from 4 amps to 300 amps in 1ph, 2ph, and 3ph
No. of coils are paralleled to increase current carrying capacity. |
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EFFICIENCY & REGULATION: |
| All SERWEL transformers are designed to produce less heat and low watt losses to achieve extremely high efficiency and less voltage regulation & confirms to IS:5142 requirements. |
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OTHER FEATURES: |
No wave from distortion.
Smooth and step less voltage control.
Silver plated commutate surface.
Simple installation and connection.
Long life with negligible maintenance.
Voltage doubling, current doubling possibility with series and parallel coils.
Low temperature rise-class “F” insulation.
Rugged mechanical construction.
Spare carbon brushes provided.
Resistant to corrosion
Faster deliveries with consistent quality.
Most integrated modem plant. |
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Autotransformers are frequently used in power applications to interconnect systems operating at different voltage classes
Auditoriums, Hotels, Conference Halls, Exhibitions, Laboratories etc
AC Voltage Stabilizers, Rectifiers, Battery Chargers
Temperature control of Ovens, Furnaces
Testing of instruments, Relays, Circuit Breakers etc
Welding, Electro-plating, Anodizer, Colleges & Universities
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DISTRIBUTION TRANSFORMERS – UNIT II |
GENERAL FEAUTURES |
Serwel Electronics Limited Unit-II established in 2009, is one of the leading manufacturers of Electric power transformers, High voltage Transformers in India. We are an ISO 9001: 2000 Certified Company with an extensive product range of voltage Transformers, power Transformers and distribution power Transformers from 10 KVA of 11 KV class and from 100 KVA to 8000 KVA of 33 KV class. Serwel Electronics Limited Also undertakes manufacturing of special purpose transformers against customer’s specification which is our special field of interest.
Serwel Transformers are manufactured under the expert engineer’s guidance with latest technical know-how.
Serwel Transformers are designed to meet all the latest National and International standards serwel products undergo strict quality control at every stage of manufacturing process under a watchful team of experienced engineers and follow a quality assurance program. The transformers are put through required tests before dispatch as per IS specification. Test certificate containing the test result along with guarantee is provided to the buyer. Wide range of Transformers have been tasted at Central power Research Institute, Bangalore.
Various capacities of Transformers have been supplied to Various Customers.
Customer Service and satisfaction have always been our motive and quality an obsession. Prompt after-sale service is our strength. Customer calls are attended immediately by service department which is manned by skilled and experienced staff. |
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SPECIFICATIONS: |
• 3 phase, 50 Hz in voltages of 11 kv, 22 kv and 33 kv
• Off-circuit tap changer to provide +5% to-10% taps in steps of 2.5%
• On-load tap changer to provide +7% to-21% taps in steps of 1.75%
• Class A insulated Copper wound
• Vector group Dyn 11
• Continuous duty
• Painting as per IS/IEC standards
• HV side cable box LV side cable box/bus duct
• Standard fittings as per IS 2026/IEC 76
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FEATURES: |
• Designed for 25 years of trouble-free performance
• Design conforms to IS 2026, BS 171, IEC 76 and other relevant standards
• Very low power loss and low noise
• Withstands electrical impulses, thermal and dynamic stresses
• Optimum utilization of active materials for sleek design
• Latest manufacturing techniques ensure cost effectiveness and reliability |
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OPTIONAL RESOURCES: |
• Pressure relief valve without contact/with contact
• Alarm and trip contact with Buchholz relay Oil temperature indicator
• Winding temperature
• Magnetic oil level guage
• Marshalling box to house oil temperature indicator and winding temperature indicator
• Neutral current transformer |
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