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Business· 2 min de lecture

The hidden cost of electrical noise in modern plants

Drives, inverters and switch-mode supplies save energy — but they also inject high-frequency noise that quietly turns into heat, wasted electricity and early equipment failure.

Denka® TeamIngénieurs énergie et qualité de l'énergie · Why® Group
The hidden cost of electrical noise in modern plants

Every modern plant runs on power electronics. Variable-frequency drives, solar inverters and switch-mode power supplies make processes efficient — but their fast switching injects high-frequency electrical noise (150 kHz – 30 MHz) into your own cables.

From switching equipment to heat and wasted kWh The chain: switching edges → HF noise in cables → heat in conductors and windings → wasted kWh.

Why your power-quality report misses it

Standard harmonic studies focus on low-order harmonics below 2.5 kHz (IEEE 519). The conducted-emission band defined by CISPR 11 — 150 kHz to 30 MHz — sits far above that, so the noise rarely shows up in a routine report. It shows up instead as:

  • Hotter motors — peer-reviewed studies report +8.7% to +19% motor losses and about +8 °C winding temperature under converter supply.
  • Stressed transformers — eddy-current losses up to +33% and insulation ageing about 22% faster.
  • Failing bearings — bearings account for roughly 51% of motor failures; HF common-mode current pits and flutes them from the inside.

A clip-on answer

The Black laser-engraved Denka® Platinum Plate — the one and only Denka product — clips onto existing phase conductors. It has no galvanic connection to your system; it absorbs HF magnetic-field energy and leaves 50/60 Hz power untouched. No rewiring, no downtime, no maintenance.

What the evidence says

  • Independent laboratory testing at KU Leuven / EnergyVille measured 13–15% HF attenuation per plate at 25–30 MHz.
  • Across 100+ facilities, sites typically see 8–15% lower specific energy consumption, reaching up to ~20% at select sites.
  • Example: Nestlé Waters Jordan recorded 14.7% average savings over July–August 2026 against an adjusted baseline.

Every result is measured on your own meters and backed by a 90-Day Result-Conditioned Money-Back Guarantee.

References

  1. Denka® Technical Portal — HF conducted emissions
  2. KU Leuven / EnergyVille laboratory evidence
  3. Nestlé Waters Jordan case study
  4. IEC CISPR 11 — conducted-emission limits
  5. IEEE Std 519 — harmonic control
  6. Aarniovuori et al., IECON 2013 — motor losses under converter supply