Mel, I don't know what ANSI C12.10 is, but I am pretty sure that you can get UL to list the device even though they don't have a standard for watt-hour meters.
What you have there is a telephone or a radio that monitors a function (the amount of power used) and reports it periodically to someone (the utility company). That sounds a lot like it has a computer inside to do all this work, and I bet that you could use UL1950. Look at the scope of UL1950 and with a little imagination you may find that it does cover your equipment without much of a stretch. UL1950 specifically mentions accounting machines (yours reports the dollar amount owed to the utility company), calculators (yours calculates the amount of power used), data processing equipment (yours changes the power data into a radio signal and transmits it, thereby processing the data), etc. And of course there is nothing stopping UL from investigating any piece of equipment even without an existing standard. They can always use the Council Report route. That's how new classifications are born. Well, my thoughts anyway. Gabriel Roy Hughes Network Systems MD (41) Mel Pederson wrote: Hello: I am looking for some safety standards for watt-hour meters. I called UL, and they do not have any standards pertaining to this, nor do they list watt-hour meters. They suggested ANSI C12.10. This applies to mechanical watt-hour meters. My questions are: 1) I want to make sure that ANSI 12.10 covers safety requirements for watt-hour meters. 2) The watt-hour meter in question is not mechanical, so what (safety) standard would apply? 3) Our watt-hour meter would have an antenna on it to transmit billing information to the utility. What degree of isolation (from 120V, 240V, or 480V) would be required to the antenna, as it is accessible to Joe blow? Would (safety) standards other than those for watt-hour meters apply as there is an antenna on this equipment? Thank you for your help! Mel Pedersen Midcom, Inc. Homologations Engineer Phone: (605) 882-8535 mpeder...@midcom.anza.com Fax: (605) 886-6752
