Virdi Electric Works Private Limited
Virdi Electric Works Private Limited
Patparganj, New Delhi, Delhi
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Power Transformers

We provide various range of Power Transformers like Three Phase CVT Transformer,CVT- Constant Voltage Transformers,HT Automatic Voltage Regulator,Isolation Transformer, OLTC Distribution Transformers, Single Phase Variable Auto Transformer, Special Transformers, Step Down Transformer etc to our clients.
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AVR Transformer
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AVR Transformer

Product Details:
BrandVIRDI
ColorGrey
Cooling TypeDry Type/Air Cooled
PhaseSingle Phase, Three Phase
VIRDI Make AVR Transformer

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Isolation Transformer
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Isolation Transformer

Product Details:
BrandVirdi
Cooling TypeDry Type/Air Cooled
Phase Three Phase
We are the manufacturers of Isolation Transformer.

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Transformers With Built In HTAVR
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Transformers With Built In HTAVR

Product Details:
ColorGrey
Cooling TypeWater,Oil Cooled
Phase Three Phase
Power (VA)5 to 20,000 KVA
CurrentTo 20,000 amp
We are the manufacturers of the Transformers with Built-in HTAVR.

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OLTC Transformer
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Approx.
Rs 3.5 Lakh
Per Unit

OLTC Transformer

Product Details:
Minimum Order Quantity1 Unit
BrandVirdi
Cooling Type Oil Cooled
PhaseSingle Phase, Three Phase
Capacity100-5000 kVA
High Voltage110 121 kV
Each and every component of the OLTC Transformer is manufactured and assembled with precision and utmost care. The main process lines of the transformers are:

Core:
The core is made with laminated and low loss electrical steel sheets that are imported, grain oriented, cold rolled and sheets of high-grade steel. The cores are assembled in a manner that they reduce the noise caused by vibration; individual stamping is coated with insulation varnish which is resistant to heat and oil on both sides. The core is connected to the clamp which ensures that it is effectually earthed. The core legs are bounded with heavy-duty insulating tape. The yokes are rigidly and securely clamped between the folded steel channels. Clamps on top and bottom are firmly attached to each other by the means of tie rods. Tie rods serves the duel purpose of transferring the load from the bottom to the top clamps and securing the winding in place. This prevents tensile stress being setup in the core legs, which could adversely affect the iron losses.

Winding:
Transformer windings also known as 'Coils' are precisely designed to meet three basic requirements: thermal, mechanical and electrical. These windings wound concentrically and are cylinder shaped. Both H.V. L.V. type windings are wound with adequate securing and brazing tapes in order to get a sturdy, robust and self-supporting structure. It is provided with inter layer ducts which ensure low-temperature gradient between windings and oil so the hot spot temperature is kept to the minimum. This guarantees that the rate of insulation deterioration is lowered to attain high life expectancy.

Winding Connections:
Tapping and phase lead run in paper covered conductors. Adequate barriers are used to separate the phase leads from the tapping. Rigidly brazed tubes are used to maintain the required clearance from the coil to tank.
LV Leads, larger in cross-section, are usually sturdy and robust, where necessary supports are provided.

Insulation And Impregnation:
The principal component of insulation is insulating pre-compressed pressboard. The component like ring ducts dovetailed spacer; blocks etc. are put under compressing along with the coil assembly for preshrinking. The slight recovery in dimension after the preshrinking is compensated by providing additional insulation. This reduced the probability if coils getting loose during operation and also minimize the failure due to short circuit forces.

Short Circuit Capability:
In the order to prevent deformation under short-circuit forces; solid insulation end block and ring are used. Winding are compressed under top and bottom clamping members with the help of tie rods. The axial end thrust under fault conditions is minimized by the suitable balance of the ampere-turns over the length of windings. In a case of the bigger transformer, the HV tapping leads are taken out from two positions to balance the short-circuit forces in a much better way.

Tank Construction:
All tank are made from mild steel sheet of adequate thickness with corrugated wall panel type radiators of pressed steel fin/cooling tube for heat dissipation.
All tanks are checked by magma flux, ultraviolet ray dies penetrating system to ensure that there is absolutely no leakage from any part of the tank.

Quality Finish Through Use Of Shotblasting Technology:
Tanks are shot blasted to remove mill and welding scale and then a primer coat is immediately applied to the exterior to eliminate rust formation.
After priming, all tanks receive a coat of intermediate paint and after pressure testing; they receive a final coat of high gloss paint applied by spray. This ensures high coverage helping to combat corrosion in an inaccessible place.

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Ultra Isolation Transformer
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Ultra Isolation Transformer

Product Details:
Cooling TypeOil Cooled
PhaseSingle Phase
Ratios1:1 and 2:1
RegulationBetter than 3.5 %
Dielectric strength2500 V AC for 120 Sec
Insulation resistanceMore than 1000 Mega Ohms
We are the manufacturers of Ultra Isolation Transformer.

Features :-

  • Ratios:-1:1 and 2:1
  • Regulation :- Better than 3.5 %
  • Di-electric strength :- 2500 V AC for 120 Sec
  • Insulation resistance :- More than 1000 Mega Ohms

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CVT- Constant Voltage Transformers
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CVT- Constant Voltage Transformers

Product Details:
Accuracy Class0.2, 0.5, 10, 20
BrandVirdi
PhaseSingle Phase, Three Phase
We are the manufacturers of CVT-Constant Voltage Transformers.

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Special Transformers
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Special Transformers

Product Details:
BrandVirdi
Cooling TypeOil Cooled, Water
Phase Three Phase
We are the manufacturers of Special Transformers.

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Three Phase CVT Transformer
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Approx.
Rs 12,000
Per Unit

Three Phase CVT Transformer

Product Details:
Minimum Order Quantity5 Unit
BrandVirdi
Input Voltage280V
Output Voltage400 Volts
Phase Three Phase
WaveformSine Wave
Ambient Temp5-50 degree Celsius
We are offering Three Phase CVT Transformer.

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HT Automatic Voltage Regulator
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HT Automatic Voltage Regulator

Product Details:
ConditionNew
MaterialIron
PhaseSingle Phase
We are the manufacturers of HT Automatic Voltage Regulator.

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Step Up Transformer
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Step Up Transformer

Product Details:
BrandVirdi
Cooling TypeOil Cooled
Input Voltage115V
Output Voltage220V
Primary Connection Type Star or Wye
Secondary Connection Type Star or Wye
Coil StructureToroidal
We are the manufacturers of Step Up Transformer.

Features :-

  • Usage:Power
  • Phase:Single
  • Coil Structure:Toroidal
  • output voltage:220V
  • input voltage:115V

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OLTC Distribution Transformers
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OLTC Distribution Transformers

Product Details:
Cooling Type Oil Cooled
PhaseThree Phase
We are the manufacturers of Distribution Transformers with OLTC.

Features :-

  • Usage:Power

  • Phase:Three

  • Frequency:50Hz to 60Hz

  • Coil Number:Autotransformer

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Single Phase CVT Transformer
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Approx.
Rs 12,000
Per Piece

Single Phase CVT Transformer

Product Details:
BrandVirdi
Input Voltage160V
Output Voltage230-270V
PhaseSingle
Single Phase CVT Transformer are produced by using state of art Fellow resonant technology. The product is highly economical reliable. It gives you instantaneous voltage regulation, no transient, no spikes, sine wave, output, noiseless operation and high isolation between output Input.

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