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Transformers

Our Complete range of products are Distribution Transformer, Rated Transformers, Isolation Transformer, Auto Variable Transformers and Oltc Distribution Transformer.

Distribution Transformer

Subjected to rigorous and strict quality controls at every stage of manufacturing, Designed to meet latest national international standards like BIS, IS, IEC, ANSI, BS, DIN, etc., Wide range of Transformers duly tested at Central Power Research Institute, Bangalore , Bhopal Quality assurance programme available

  • Off-circuit tap changer to provide +5% to -5% in steps of 2.5% (or as specified by customer)
  • On-load tap changer to provide +5% to -15% in steps of 1.25% (or as specified by customer)
  • 3 Phase, 50 Hz in voltages of 11 KV, 22 KV and 33 KV
  • Continuous duty
  • Painting as per IS / IEC standards
  • Vector group Dyn 11
  • Standard fittings as per IS: 2026 / IEC 76 / BIS 1180
  • HV side cable box/Bare Bushings
  • LV side cable box / bus duct
  • Design conforms to BIS 1180 & IS:2026, BS 171, IEC 76 and other relevant standards
  • Latest manufacturing techniques to ensure cost effectiveness and reliability
  • Designed for 25 years of trouble - free performance
  • Very low power loss and low noise
  • Optimum utilization of active materials for sleek design
  • Withstands electrical impulses, thermal and dynamic stresses
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Rated Transformers

  • Input voltage 415V 3 Phase Delta
  • Output Voltage 415V 3 Phase Star

K-Rated Isolation Transformer is to deliver conditioned power to a nonlinear high harmonic current load and operate at safe temperatures while minimizing the harmonic currents

In a data centre, all the distributed power loads are connected through a non linear power source, due to which HARMONICS generation is unavoidable. These generated Harmonics are flow back and directly effects the main power source, which a UPS. The effect of harmonics de-rates the capacity of UPS. Hence 100% utilization of UPS capacity becomes wasted. The effect of harmonics also creates much heat in the transformers of UPS.

To eliminate these direct effects on UPS, K-Factor Transformers are designed based on the harmonics present the load. The special design of K-Factor Transformer helps us to depend on much to eliminate or withstanding from theeffects of Harmonics.

  • Double wound , High Isolation
  • Double sized neutral
  • Insulation class H
  • Regulation is better than 3.5%
  • Overload rating of 100% for 10 secs
  • Core of CRGO and conductor of copper
  • Natural / Forced Air Cooled
  • As per IS:2026 standards
  • Attenuation: 80 db/100 db CMRR
  • Primary connect as DELTA, secondary connection as STAR
  • Efficiency of the transformer is minimum 98%
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Isolation Transformer

  • Output Voltage  
  • System Connections  
  • Delta / Star Input Voltage
  •   415V 3 Phase
  • 415V or 200V 3 Phase Ratios
  •   1:1 and 2:1
  • Regulation  
  • Better than 3.5 % Power Factor
  •   0.75 Lead to 0.75 Lag
  • Di-electric Strength  
  • 3KV for 60 sec Insulation Resistance
  •   Better than 1000Mega Ohms
  • Coupling Capacitance  
  • 0.1 PF for 80 db Leakage Current
  •   Less than 20 Micro Amps
  • Common Mode Attenuation  
  • 80 db / 100 db Construction Standards
  •   As per IS 2026 Part I & II, IS 11171
  • Type of Execution  
  • Closed Type Operating Temperature
  •   0° C to 45° C
  • Type of cooling  
Most Suitable for
  • CNC Machines
  • Telecommunication Equipments
  • Bio Medical Equipments
  • Large Computer Installations
  • Printing Machinery
  • Scientific Equipments
  • Cell Phone Networks
  • Garment Equipments
  • Textile Machineries . and many more.
View Complete Details

Auto Variable Transformers

  • System Connections  
  • Star Input Voltage
  •   415V 3 Phase
  • Output Voltage  
  • 0 - 470V 3 Phase (Continuously Variable) Power Factor
  •   0.75 Lead to 0.75 Lag
  • Di-electric Strength  
  • 2.5KV for 60 sec Insulation Resistance
  •   Better than 100Mega Ohms
  • Construction Standards  
  • As per IS 5142 Type of Execution
  •   Closed Type
  • Operating Temperature  
  • 0° C to 45° C Type of cooling
  •   Natural air / Oil cooled
  • Type of control  

System Connections Star
Input Voltage 415V 3 Phase
Output Voltage 0 - 470V 3 Phase (Continuously Variable)
Power Factor 0.75 Lead to 0.75 Lag
Di-electric Strength 2.5KV for 60 sec
Insulation Resistance Better than 100Mega Ohms
Construction Standards As per IS 5142
Type of Execution Closed Type
Operating Temperature 0° C to 45° C
Type of cooling Natural air / Oil cooled
Type of control Motorised with Increase & Decrease switches
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Oltc Distribution Transformer

TappingsSwitch Tappings from 5% to -5% in steps of 2.5% or 1.5% for HV variation or as per customers requirement On Load Tap ChangerOLTC of 16 steps for HV variation from +5% to -15% in steps of 1.25% or as per Specific requirements. OLTC for remote Autoparallel operation can also be offered.
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Furnace Transformers

Multiple Shielding Techniques employed to reduce the inter winding capacitance to below 0.005 picofarad and increases DC Isolation to over 1000 Megaohms.

Technically any transformer that has no direct current path between its primary & secondary windings provides isolation from any kind of leakage in Current, Spikes/Surges produced in the system. Provision of electrostatic shield in between primary & secondary winding depends upon its construction, specification & performance characteristics.

Isolation / Ultra Isolation Transformer are being used to protect Electronic & Sophisticated equipments, CNC Machines from the excessive line voltage transients, spikes / surges produced in the system. Electrostatic shielding helps in grounding these spikes & not allowing to pass on to the secondary side of the transformer.

Furnace Transformer are built in delta / star connection with neutral as floating & electrostatic shielding is used to protect the furnace from any kind of Earth Fault Tripping.

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Small Power Transformers

Subjected to rigorous and strict quality controls at every stage of manufacturing, Designed to meet latest national international standards like BIS, IS, IEC, ANSI, BS, DIN, etc., Wide range of Transformers duly tested at Central Power Research Institute, Bangalore , Bhopal Quality assurance programme available

Most Suitable for

  • All DISCOMS Substations
  • Inverter duty Transformer for Solar & Wind Power Generation Application

  • Off-circuit tap changer to provide +5% to -5%, +7.5% to - 7.5% , +10% to -10% taps
  • On-load tap changer to provide +5% to -15% taps in steps of 1.25% / +5% to - 15% in steps of 2.5%
  • 3 Phase, 50 Hz in voltages of 11 KV, 22 KV and 33 KV
  • Continuous duty
  • Painting as per IS / IEC standards
  • Vector group Dyn 11 ( or ) as required
  • Standard fittings as per IS: 2026 / IEC 76
  • HV side cable box/Bare Bushings
  • LV side cable box / bus duct

  • Design conforms to IS:2026, BS 171, IEC 76 and other relevant standards
  • Latest manufacturing techniques to ensure cost effectiveness and reliability
  • Designed for 25 years of trouble - free performance
  • Very low power loss and low noise
  • Optimum utilization of active materials for sleek design
  • Withstands electrical impulses, thermal and dynamic stresses
View Complete Details

K-Rated Transformers

  • Input voltage 415V 3 Phase Delta
  • Output Voltage 415V 3 Phase Star

K-Rated Isolation Transformer is to deliver conditioned power to a nonlinear high harmonic current load and operate at safe temperatures while minimizing the harmonic currents

In a data centre, all the distributed power loads are connected through a non linear power source, due to which HARMONICS generation is unavoidable. These generated Harmonics are flow back and directly effects the main power source, which a UPS. The effect of harmonics de-rates the capacity of UPS. Hence 100% utilization of UPS capacity becomes wasted. The effect of harmonics also creates much heat in the transformers of UPS.

To eliminate these direct effects on UPS, K-Factor Transformers are designed based on the harmonics present the load. The special design of K-Factor Transformer helps us to depend on much to eliminate or withstanding from theeffects of Harmonics.

  • Double wound , High Isolation
  • Double sized neutral
  • Insulation class H
  • Regulation is better than 3.5%
  • Overload rating of 100% for 10 secs
  • Core of CRGO and conductor of copper
  • Natural / Forced Air Cooled
  • As per IS:2026 standards
  • Attenuation: 80 db/100 db CMRR
  • Primary connect as DELTA, secondary connection as STAR
  • Efficiency of the transformer is minimum 98%
View Complete Details

Ultra Isolation Transformer

  • Operating Temperature 0° C to 45° C
  • System Connections Delta / Star
  • Input Voltage 415V 3 Phase
  • Output Voltage 415V or 200V 3 Phase
  • Ratios 1:1 and 2:1
  • Regulation Better than 3.5 %
  • Power Factor 0.75 Lead to 0.75 Lag
  • Di-electric Strength 3KV for 60 sec
  • Insulation Resistance Better than 1000Mega Ohms
  • Coupling Capacitance 0.1 PF for 100 db
  • Leakage Current Less than 20 Micro Amps
  • Common Mode Attenuation 100 db / 120 db
  • Construction Standards As per IS 2026 Part I & II, IS 11171
  • Type of Execution Closed Type
  • Type of cooling Natural air / Forced air Oil cooled (optional)
Most suitable for

  • cnc machines
  • telecommunication equipments
  • bio medical equipments
  • large computer installations
  • printing machinery
  • scientific equipments
  • cell phone networks
  • garment equipments
  • textile machineries . And many more.
View Complete Details
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