Engineer FAQ
Engineer FAQ
Straight answers to the questions electrical engineers ask most, with the limits stated.
Q01Does the plate affect protection relays, breakers or fault currents?
No galvanic connection is made: the plate is a high-resistivity ceramic clipped around the conductor. At 50/60 Hz the real permeability μ′ dominates and the added series reactance ωL is negligible, so the fundamental current path, protection settings and fault levels are not altered.
Q02Will it change what the utility meter reads?
The plate is not part of the metering circuit. A change on the meter reflects a change in consumption, which is exactly why results are verified against production-normalised baselines and, where possible, ON/OFF/ON comparisons under matched production.
Q03Does it correct power factor or low-order harmonics (IEEE 519)?
No. The Denka® Platinum Plate is designed for the 150 kHz – 30 MHz conducted-emission band. It complements, and does not replace, capacitor power-factor correction and IEEE 519 harmonic filters.
Q04Can the plate overheat?
It absorbs HF energy and releases it as heat, but HF noise currents are small relative to load current: self-heating stays at or below 0.4 °C. The specification therefore carries no temperature rating.
Q05What happens if a plate is installed in the wrong place?
Being passive and unconnected, a badly placed plate does not create a hazard in the circuit — it simply absorbs less noise. Placement is set by the HF spectrum survey; installation is done by qualified personnel under local switchgear safety rules such as NFPA 70E.
Q06How many plates does a site need?
There is no standard number — very large plants can need thousands. The quantity is worked out from a site survey or the single-line diagram, panel by panel: only end-user panels are fitted, with 1 plate per phase conductor on each breaker of about 60 A and above, and the principal breaker fitted to cover smaller circuits. See the allocation rule (section 5) and the panel planner.
Q07Can it reduce nuisance RCD trips, PLC errors or LED flicker?
These symptoms are associated with HF conducted emissions circulating between nearby equipment. Reducing those emissions can help, but we do not guarantee it: confirm the source with the spectrum survey and verify the effect with an ON/OFF/ON test.
Q08How can I verify the effect myself?
Clamp an RF current probe around the phase conductors and record the spectrum (2 kHz – 30 MHz) with plates removed and fitted. For energy, use IPMVP Option B or C with a normalised baseline — the savings-uncertainty tool on this portal shows whether your result is statistically meaningful.
Q09Maintenance, lifetime and materials?
No maintenance: no consumables, no moving parts, chemically stable ceramic. Rated for 25+ years. Non-radioactive, asbestos-free, halogen-free and RoHS compliant.