I am asuming that since the unit is provided with a NEMA-5- 15P plug (for the ac supply source), we are talking about applicable standards for the North American market. There are UL and CSA Standards for Household and Industrial Battery Chargers. If unit is for ITE/Telecom applications, UL1950 and CSA C22.2 950 will cover the requirements.
1. You cannot have a rating of 110-220 V for a product with a non-detachable power cord, unless you do not intend to provide the attachment plug. If you choose this option of not providing a plug, unit can only be Recognized/Certified as a Component for use in an end-product. To be able to List the product (see item 3 also), you must rate the unit 110 V and provide a Listed cord set with a Nema 125 V plug. Alternatively, you can rate the unit 230 V and provide a Listed cord set with a 250 V Nena plug.
2. Regarding the use of the IEC 320 connector for the 24 Vdc is definitely wrong. There is a clause in all of the above specified standards which states that components shall be suitable for the application. A Recognized/Certified IEC320 connector is AC rated (typically 250 Vac) and its use with a 24 Vdc supply is unacceptable unless the unit is a component within a system and is tested as part of the overall system. In this case, the appliance coupler is only accessible to the serviceman and a prominent marking is provided to specify "24 Vdc".
3. The only way I could see your product being Listed/Certified as a stand-alone equipment for 24 Vdc or 110- 230 V is by complying with the following:
A. For the AC supply connection, get rid of the non- detachable cord. Use an IEC 320 Recognized/Certified/European Approved appliance coupler. This will allow you to ship power cord sets with plugs suitable for the country of destination. For ITE applications, providing a cord set is optional.
B. For the DC supply, provide a Listed/Certified Class 2 power supply (US) or European Approved (according to the applicable European end-product standard). The secondary leads of the power supply will be provided with a non- standard type connector. Your unit will also provide the same type of mating connector.
From: "Stewart, Judd" <[email protected]>
To: "'EMC-PST'" <[email protected]>
Subject: IEC 320 APPLIANCE COUPLER APPLICATION
Date sent: Fri, 30 Oct 1998 14:32:21 -0800
Send reply to: "Stewart, Judd" <[email protected]>
> Good afternoon everyone,
>
> Problem-
>
> A universal battery charger that I am reviewing is powered by AC 110-220 or
> 24VDC.
>
> The 24 VDC enters the device via a male IEC 320 connector....OUCH!.
>
> The AC enters via a non-detachable recognized power cord with NEMA- 5-15
> molded male connector.
>
> Commons sense would tell you not to use this connector for the DC but they
> did...The likely hood that someone would plug AC into it is extremely high.
> I am looking for a regulation/standard to reference that would prevent this
> sort of application...
>
> any Ideas?
>
> Thanks in advance,
>
> Judd Stewart
> 619.623.6639
>
>
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PETER S. MERGUERIAN MANAGING DIRECTOR PRODUCT TESTING DIVISION I.T.L. (PRODUCT TESTING) LTD. HACHAROSHET 26, P.O.B. 211 OR YEHUDA 60251, ISRAEL
TEL: 972-3-5339022 FAX: 972-3-5339019 E-MAIL: [email protected] Visit our Website: http://www.itl.co.il --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
