Core Design
CRGO vs amorphous metal cores: where the efficiency gains actually show up
Amorphous metal cores cut no-load loss by up to 70% but bring trade-offs in flux density, saturation and cost.
Read article →Design rationale, testing methodology, thermal modelling and field experience — written by our engineers at the Jaipur works.
Solar IDT units don't see clean 50 Hz current — they see harmonic-rich waveforms from IGBT switching. Losses scale with harmonic order squared, demanding a fundamentally different approach to winding and core design.
Read full articleAmorphous metal cores cut no-load loss by up to 70% but bring trade-offs in flux density, saturation and cost.
Read article →Pushing flux density higher shrinks the core — but punishes losses and acoustic noise.
Read article →Natural ester fluids offer higher fire-point and biodegradability, but alter thermal and breakdown behaviour.
Read article →Micro-voids in cast-resin insulation are where dielectric failure begins. Vacuum casting matters.
Read article →The standard lightning impulse wave is a proxy for real surges. Reading oscillograms properly separates genuine pass from borderline failures.
Read article →Forced-air cooling extends a transformer's rating by roughly 25%, but only when the installation actually needs it.
Read article →Winding hotspot, not bulk oil temperature, determines insulation life. IEC 60076-7 gives a tractable model.
Read article →Every 7 °C rise in hotspot temperature halves insulation life. The kinetics should drive loading decisions.
Read article →Two independent LV windings on one core cut interconnection count, but phase displacement must be managed.
Read article →Frequent inverter tripping creates daily short-circuit-like transients. Standard bracing is not enough.
Read article →Every unit gets routine tests. Type tests happen once per design. Knowing which is which shapes what you should ask.
Read article →India's BEE rates distribution transformers on load losses. Higher star doesn't automatically mean better life-cycle cost.
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