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Ultra Islolation Transformer

Miraclepower Ultra Isolation transformers provide low inter winding capacitance and low leakage inductance as they are designed with split winding construction to give high attenuation and multiple shielding mechanisms to reduce low capacitance.This is an advanced version of isolation transformer. Construction of ultra isolation transformers is very different from the regular isolation transformer. In this secondary coils are split (or primary and secondary coils) as two or more coils according to the capacity of the transformer. The shielding method is also different because of the construction style.

There is an inductance created between the coils because it is split. This inductance will give you more noise attenuation. As primary coil is not wound on top of the secondary coil the coupling capacitance is less. This is mainly used to protect the CNC Machines, Medical Equipments, Computers and Telecommunications equipment from damage due to electrical noise, spikes etc.

Technical Specifications

Ratio 1 : 1
Load Regulation 2-4% for 100% change in current @ unity P.F.
Efficiency Better than 97%
Connections Delta / Star
Dielectric Strength 2.5 KV
DC Isolation Over 100Mohms between any windings or windings to ground.
Common Mode Noise Rejection Over 120 db
Coupling Capacitance 0.1 pf for 100dB 0.05pf for 120dB
Line Frequency 47 to 63Hz.


  • Isolates the equipment from noisy power line.
  • Reduces power line Noise, Surges, Spikes & Transients.
  • High Insulation resistance.
  • Provides the complete Electromagnetic & Electro static shielding.
  • No need for extra filter circuits.
  • Suitable for higher harmonic area installation.
  • Because of the lesser heat dissipation the life of the transformer is very high.


  • Split winding constructions and bi-filar connections is made to reduce the overall capacitance of the winding
  • High insulating materials and special shielding techniques have been used to minimise the noise
  • The core and its magnetic properties are chosen in a way that displays enough leakage inductance, which in turn offers normal mode power line noise. This is in sync with the transfer of fundamental power frequency. All the higher frequencies are blocked
  • Transfer of electric noise is blocked by Unique Box shielding and apt techniques
  • Better regulation with low impedance effect
  • Shield against strong lightening, impulse noise, bus short-circuit, accidental discharge of capacitors, etc
  • Shield for the microprocessor-based machines and equipments from damage due to electrical noise, spikes etc