Hi frequency GFCIS

[tom baker]

https://www.ecmag.com/magazine/articles/article-detail/high-frequency-gfcis-tech-to-minimize-nuisance-tripping

Anyone use these, do they work what is the cost?

 

[ramsy]

Ecmag.com
The CPSC supported proposals, dated Nov. 22, 2024, to revise UL 943 to address high-frequency GFCIs.

UL Rep at IAEI meeting today, said UL just finished publishing a GFCI standard for the high frequency.

It may be too little too late, since developers have entrenched appliance OEM’s that work with old GFCI’s.

Without new construction demand, manufacturers wont have volume support for products, and big box stores wont keep shelf space for anything that collects dust.

 

[ptonsparky]

I hate to bother my old suppliers with cost questions when they know I won't be buying.
Can one of you active members come up with costs and catalog #s?

 

[don_resqcapt19]

I hate to bother my old suppliers with cost questions when they know I won't be buying.
Can one of you active members come up with costs and catalog #s?

As far a I know, there is none on the market at this time. UL-943 just recently updated the standard to provide for GFCI-HF.

 

[don_resqcapt19]

It may be too little too late, since developers have entrenched appliance OEM’s that work with old GFCI’s.

Based on the information provided in the UL-943 meeting when the GFCI-HF was adopted, that does not appear to be the case. Most of the issues is the high frequency leakage current that is created by VFDs.

 

[ramsy]

Based on the information provided in the UL-943 meeting when the GFCI-HF was adopted, that does not appear to be the case. Most of the issues is the high frequency leakage current that is created by VFDs.

Did that meeting clarify when NRTL is required for UL-943 GFCI-HF adoption?

Did that meeting clarify if GFCI-HF devices will be sold separately from Non-HF GFCI devices?

 

[don_resqcapt19]

Did that meeting clarify when NRTL is required for UL-943 GFCI-HF adoption?

Did that meeting clarify if GFCI-HF devices will be sold separately from Non-HF GFCI devices?

The standard is complete, so as soon as manufacturers can complete their design work and start manufacturing them, they can submit them for testing so they can be listed as a GFCI-HF.

Both the standard GFCI and the GFCI-HF will be on the market. Some on the UL-943 committee wanted all of the GFCIs to be of the HF type, but that did not pass ballot.

 

[ramsy]

Some on the UL-943 committee wanted all of the GFCIs to be of the HF type, but that did not pass ballot.

Thank you kindly.