'K’ Rated Isolation Transformer

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  • Overview
  • Features
  • Specifications

Performance

K-factor is defined as a ratio between the additional losses due to harmonics and the eddy current losses at 50Hz.

K-Factor is defined as a ratio between the additional losses due to harmonics and the eddy current losses at 50Hz. It is used to evaluate transformers for nonlinear loads. Transformers with a rated K-factor of 4, 7, 13, 20 and 30 are available.

The ANSI/IEEEE C57.110 has derived a system of weighing how much harmonic load currents a transformer can handle without exceeding its maximum temperature rise level. A K factor of 1 indicates no harmonics, while a K factor of 50 is the harshest harmonic environment possible. Typically a K Factor of 13 is sufficient for most applications. K factor must be determined to calculate the right size transformer that is needed.

Applications

  • Data Centres, Call Centres, IPO
  • Induction Heaters/Inverters
  • UPS, VFD’S & Drives
  • HID Lightings
  • Hospitals/Medical Centres, Research Labs
  • Corporate, Banking and Financial Institutions

Effects of Harmonics

  • Overheating
  • Equipment Malfunctioning
  • Equipment Vibrations
  • Breakers Tripping

Special Features of Neel K Rated Teansformers

  • Copper windings
  • Lower Output impedance
  • Excellent transverse mode noise attenuation
  • Coil design is optimized for low eddy current loss and high harmonic current carrying capacity.
  • Cores designed for reduced flux densities to compensate for harmonic voltage distortion
  • Double size neutral terminal
  • Core of high quality electrical steel
  • Quiet operation
  • Ref StandardUL-1561, IEEE – C-57-110, I

Technical Specifications