Bharti Electricals

FOCAL POINT, Ludhiana, Punjab

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Isolation Transformers

Our product range includes a wide range of Oil Cooled Isolation Transformer, Three Phase Isolation Transformer and Cast Resin Isolation Transformer.

Oil Cooled Isolation Transformer
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PhaseThree Phase
Frequency50-60 Hz
Cooling TypeOil Cooling
Winding MaterialCopper
Rated Capacity1000KVA

Oil Cooled Isolation Transformer often has symmetrical winding which is used to decouple 2 circuits. It incorporates a full metallic shielding (copper /aluminum) between primary & secondary winding.

Oil Cooled Isolation Transformer are being used to protect electronic & sensitive creative equipment such computer & peripherals medical instruments, digital machines & CNC M/C from the Excessive line voltage transient, spikes/surges which produced in the system. Apart from this, isolation Transformer also obstructs those disturbances that are generated by the noisy equipment from being injected into the power line.

In Shielded transformer, 4 low impedance path Exist for noises to pass to secondary & vice versa. These paths are:

  • High value of coupling capacitance.
  • Maximum leakage of magnetic field.
  • Leakage current
  • Static transformers of electric noise.


The multiple shielding techniques employed in isolation Transformers reduce the inter winding capacitance below to 0.005 Pico farad & increase D.C isolation to over 1000 M ohms.

Application of Isolation Transformer
  • Protection of microprocessor based Machines from Damage & data loss
  • Where ground of equipment cannot be earthen
  • When no current leakage is permitted in equipment
  • When protection is needed against high frequency line losses & strong surges

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Three Phase Isolation Transformer
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Three Phase Isolation Transformer

Rs 50,000 / UnitGet Latest Price

Input Voltage400 or 415V +/- 10% (Phase to Phase) Star or Delta connected
Output Voltage400 or 415V +/- 10% (Phase to Phase) Star or Delta connected
Regulation+ / - 4%
Wave Form DistortionNil
SuitabilitySuitable for all power factor loads
CoolingNatural Air Cooled
Duty CycleContinuous 24x7
Spike Clamping Level500V (Normal)
Spike Voltage6kV (Max)
Spike Current5kA (Max)
Response Time5 Nano Sec
Break Down Strength2500V AC for 120 Sec.
Insulation ResistanceGreater than 100 mega ohms at 500V DC
Class of InsulationF Class
InstallationIndoor type
Degree of ProtectionIP - 30
No Load LossLess than 0.5%
Efficiency97 %
Winding and Wiring MaterialCopper EC grade (99.9% Pure)
TransformerHeavy duty Copper Wound Transformer

We are successfully meeting the varied needs of our patrons by offering a wide gamut of Three Phase Isolation Transformer as per their precise needs.

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Cast Resin Isolation Transformer
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Cast Resin Isolation Transformer

Rs 40,000 / UnitGet Latest Price

Power11 kW
PhaseSingle Phase
Input Voltage110 V
Output Voltage440 V
Cooling TypeDry type/Air cooled
Frequency50 Hz
Capacity500 - 25000 kVA

With a firm commitment to quality, we are involved in offering a wide ambit of Cast Resin Isolation Transformer. 

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