It seems to me that you have covered almost all of the safety concerns. If you are plugging into the telephone network in Europe, I imagine that you received EN 41003/EN 60950 approvals also? The analogous UL requirement would be UL 1950/CSA 950. It covers equipment that would plug into the telephone network, as well as much more (all "Information Technology Equipment"). It seems that, from a safety point of view, what you describe may have the same safety concerns as a PABX. PABX's are covered under UL 1950. There are some notable differences in the Euro and UL/CSA safety standards for telephone equipment; one of them being the "power cross" considerations that Europe does not worry about. This may take some redesign of your PSTN interface.
If you are going into a hospital, also be aware...if you are connecting any medical equipment to this system, you may need to apply UL 2601-1 also... You also mentioned that EN 50020, UL and Factory Mutual both have analogous, and from what I understand, very similar standard dealing with Intrinsic Safety. I would call UL or another NRTL knowledgeable in all of these areas for information. Certainly, however, UL 1950 would be the primary standard for the type of equipment you describe. You are correct, both FCC part 68 and part 15 would apply here also. Mel Pedersen Midcom, Inc. Homologations Engineer Phone: (605) 882-8535 [email protected] Fax: (605) 886-6752 ---------- From: Wismer, Ronald S.[SMTP:[email protected]] Sent: Tuesday, July 28, 1998 3:26 PM To: '[email protected]'; 'Chico Jayanthan' Subject: RE: FCC & UL Requirements for Intercom systems Chico, Not sure about UL, but since they have connections to PSTN and ISDN, I think FCC part 68 would apply. Sam Wismer RF Approvals Engineer LXE, Inc. ---------- From: Chico Jayanthan[SMTP:[email protected]] Sent: Tuesday, July 28, 1998 11:20 AM To: [email protected] Subject: FCC & UL Requirements for Intercom systems Hi, I am looking into FCC and UL requirements to market intercom systems in the US. These intercoms are manufactured in Europe and has CENELEC, EN 500015/ EN 50018 / EN 50020 / EN 60529 certifications. These intercom systems are intended to be used in hospitals, parking garages, hotels, offices, and heavy industrial environments. They also can be connected to regular telephone lines, has video capability and ISDN connection between main stations. I looked in to UL and I understand it is required to carry UL certification to market in certain US cities. But I am not sure if there a specific UL certification required for these intercom type devices. I think FCC Part 15 Class A & B applies to these devices since they will be sold to commercial and residential customers. Would some one help me understand what regulations (in addition to FCC & UL) apply to market these intercoms in the US. Also, specifically what FCC and UL regulations I should look into. Thanks in advance. Chico Jayanthan.
