"K" Rated Transformers are designed to reduce the heating effect of harmonic currents produced by non-linear loads. A Standard Transformer is not nonlinear load and will overheat and fail prematurely when connected to these loads K-Factor is defined as a ratio between the additional losses due to harmonics and the eddy current losses at 50 Hz .It is used to ovulate transformers for non-linear loads. 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.
Technical Specification
| KVA Rating | Upto 1000 KVA - Dry Type Available from K1 upto and including K20 |
|---|---|
| Impedance | 3 - 4 % |
| Input Voltage | 415 Volts (Other Voltage on Request) |
| Output Voltage | 415/200 Volts (Other Voltage on Request) |
| Input / Output Configuration | Delta / Star or Zig - Zag |
| Construction | Dry Type Double wound Air Cooled Common core Varnish and vacuum impregnated |
| Winding | Copper |
| Neutral Conductor Rating | 200 % |
| Frequency | 50 / 60 Hz |
| Insulation Class / Level | H Class/180 deg. C |
| Maximum temperature rise | 125 deg. C |
| Enclosure type | MS Enclosure as per IP21 |
| Enclosure Finish | Siemens Gray, RAL 7035 (Other Colours available on request) |
| Flash Test / H.V Test | 2500 between winding and to Earth |
| Ambient Temperature | 0 - 40 deg. C |
| Operating Humidity | 0 to 90 %, non condensing |
| Reference Standard | UL-1561, IS : 11171 |
Special Features of K Rated Transformer
| 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 destortion |
| Double size neutral terminal |
| Core of high quality electrical steel |
| Quiet operation |
| Ref. Standard UL - 1561, IS 11171 |
Applications
| Data Centers Call Centers, IPO |
| Induction Heaters / Inverters |
| UPS, VFD'S and Drives |
| HID Lightings |
| Hospital / Medical Centers, Research Labs |
| Corporate, Banking and Financial Institutions |
1. Nonstandard KVA Input Voltage and out Voltage are also available on request.
2.SAHARA reserves the right to amend design and specification without notice as continuous efforts are made to Improve Products performance.
3. Dimensional Detail available on request.