Passive HF noise filter · 150 kHz – 30 MHz
Silence the electrical noise that is costing you energy.
The Black laser-engraved Denka® Platinum Plate clips onto your existing cables and absorbs the high-frequency noise created by drives, inverters and power supplies — typically cutting energy per ton by 8–15%, with zero rewiring.
50 × 25 × 3.5 mm · 21 g · Ni-Zn ferrite ceramic DT400L
- typical kWh/ton reduction, up to ~20% at select sites
- 8–15%typical kWh/ton reduction, up to ~20% at select sites
- facilities worldwide
- 100+facilities worldwide
- HF attenuation per plate at 25–30 MHz (KU Leuven)
- 13–15%HF attenuation per plate at 25–30 MHz (KU Leuven)
- rewiring, downtime or maintenance
- 0rewiring, downtime or maintenance
Trusted across the Why® Group portfolio
The hidden cost
Your power electronics are making noise. Your meter is paying for it.
Variable-frequency drives, solar inverters and switch-mode power supplies switch thousands to millions of times a second. Each sharp edge injects high-frequency noise (150 kHz – 30 MHz) into your cables, where it turns into heat and wasted kWh.
Hotter motors
HF noise raises motor losses by 8.7% to 19% and winding temperatures by about 8 °C.
Stressed transformers
Eddy-current losses can rise by up to 33%, and insulation ages 22% faster.
Failing bearings
Bearings cause about 51% of motor failures — HF currents pit and flute them from the inside.
How it works
Clip it on. The noise is absorbed. The power passes through.
Denka® Platinum Plates sit directly against your phase conductors. They have no electrical connection to your system — they only interact with the magnetic field of the noise.
- 01
Clip on in minutes
Fitted to existing phase conductors during a routine maintenance window. No rewiring, no shutdown of production lines.
- 02
Absorb the noise
The ferrite-ceramic absorbs 150 kHz – 30 MHz energy and releases it as harmless micro-heat — no more than 0.4 °C.
- 03
Power untouched
Your 50/60 Hz power passes straight through. Nothing to maintain, nothing to replace — for 25+ years.
The ROI chain
Less noise. Cooler equipment. Lower bills.
Filtering high-frequency noise sets off a chain of measurable gains across your whole electrical system.
Plus asset protection: fewer bearing failures (51% of motor failures) and slower transformer insulation ageing.
Estimate your opportunity
Move the sliders to see what a typical result could mean for your site.
Estimated energy saved per year
1,200 MWh
Estimated cost saved per year
144,000
Indicative only. Typical results are 8–15% (up to ~20% at select sites) and are site-specific. Your actual result is measured on your meters with IPMVP Option B/C.
Why Denka®
Built for operations teams. Proven for finance teams.
Zero rewiring
Clip-on retrofit with no galvanic connection. Installed by qualified personnel during routine maintenance.
Independently tested
Characterised at KU Leuven / EnergyVille (Belgium): 13–15% HF attenuation per plate at 25–30 MHz.
Measured on your meters
Every result is verified with IPMVP Option B/C and ASHRAE Guideline 14 — not estimated.
No maintenance
No consumables, no moving parts, chemically stable ceramic. 25+ years of service.
Protects your assets
Reduces the HF currents behind bearing damage and accelerated insulation ageing.
Risk-free
90-Day Result-Conditioned Money-Back Guarantee on the agreed result.
25+ Years
Product lifespan & warranty
90-Day
Result-Conditioned Money-Back Guarantee
Results are verified on your own meters with IPMVP Option B/C. If the agreed result is not met within 90 days, you get your money back.
Verified results
Real plants. Measured outcomes.
Measured results from cement, food & beverage and ceramics facilities.
Independent laboratory evidence
Tested at KU Leuven / EnergyVille
In November 2022, the Power Electronics Group at KU Leuven / EnergyVille (Genk, Belgium) characterised the Denka® Platinum Plate from 1 to 30 MHz. Attenuation increased with frequency, reaching 13–15% (≈1.2–1.4 dB) per plate in the 25–30 MHz band.
See the full laboratory method13–15%
≈ 1.2–1.4 dB · 25–30 MHz
Find out what electrical noise is costing your plant.
Our engineers run a 5-step diagnostic — HF spectrum survey, thermal, power-quality and energy baselines — before anything is installed.