Wound Cores

Nik-San specializes in the production of high-quality wound cores for various transformer applications. Our wound cores offer optimal performance and efficiency in power distribution and electrical systems, ensuring reliable operation and reduced energy losses.
We produce wound cores using Cold Rolled Grain Oriented (CRGO) Silicon Steel of grades M3, M4, M5, and M6, or as per customer specifications. Our rigorous quality control ensures that every core meets the highest standards before dispatch.
Types of Wound Cores
- Toroidal Cores
- Square & Rectangular Cores
- Oval Cores
- Step-Lap Cores
Applications
- CT's & PT's
- Auto Transformers & Instrument Transformers
- Metering Devices & Magnetic Amplifiers
- Single Phase Transformer & Three Phase Transformer
- Control Circuits of Switchgear
Advantages of Wound Cores
- Reduction in weight and size, leading to cost minimization
- All cores are tested as per IEEC # 393 standards
- Strict quality control includes DC Fluximeter testing and Supermalloy impedance permeability testing
Guaranteed Electrical Properties for Wound Cores
| Sr. No. | Grade of Material | At 0.5 Tesla (AT/CM) | At 1.0 Tesla (AT/CM) | At 1.5 Tesla (AT/CM) | At 1.7 Tesla (AT/CM) |
|---|---|---|---|---|---|
| 1 | 0.23 ZDKH | 0.07 | 0.12 | 0.22 | 0.32 |
| 2 | 0.23 MHO | 0.08 | 0.15 | 0.26 | 0.35 |
| 3 | 0.23 M3 | 0.09 | 0.18 | 0.30 | 0.45 |
| 4 | M4 | 0.12 | 0.22 | 0.32 | - |
| 5 | M5 | 0.15 | 0.28 | 0.40 | - |
