#Product Trends
How to Prevent Interference Between Lead Wires in Multi-Winding Transformers?
An In-Depth Analysis Based on International Standards
To ensure safety in multi-winding transformers, suppress EMI between leads via:
1.Physical Isolation: Separate HV/LV windings; route leads vertically (minimize parallel runs) per IEC 60076 clearance.
2.Shielding: Apply copper/aluminum foil (single-point ground) for E-field; permalloy enclosures for high-di/dt circuits.
3.Filtering: Install ferrite beads on high-frequency lines; add RC/LC filters at measurement inputs (IEC 61800-3 compliant).
4.Insulation: Use XLPE/SIR at crossings; vacuum epoxy potting for compact units. Increase creepage (IEC 60664-1). Validation: Pass IEC 60270 partial discharge and IEC 61000-4 EMC tests.
Conclusion:
High-quality recycled copper is a sustainable solution for small-to-medium transformers, subject to rigorous quality control.
