While a number of countries have standards in regards to overall medical equipment, a few countries have standards in regards to specific medical-related components (e.g. plugs and cords). For the countries that do have hospital-grade or medical application standards on components, it is important to know what the requirements are so as to comply with that country or region’s rules.
The countries/regions that have hospital-grade or medical application standards on specific components include: Australia/New Zealand, Denmark, Japan, and North America. Power cords and cord sets as well as plugs and sockets are subject to special rules. Aside from these regions, there is no differentiation for plugs, sockets, and cords used in a medical setting versus a non-medical setting. But some countries have standards for overall medical equipment (which is different than specific components).
Medical equipment must meet the AS/NZS 3200 standard. There are no special requirements for plugs, only preferences. All Australian plugs must be approved to AS/NZA 3112. In Australian medical applications, it is preferred by some hospitals to have a clear, transparent plug and an orange, flexible cable. These plugs and connectors must carry one of the many Australian approvals.
The Danish hospital-grade plug and socket are recommended for use in medical applications and specifications per Standard SB 107-2-D1. The socket is designed to prevent “normal equipment” from being connected and disrupting the mains circuit in specific medical settings. Some hospitals may have a preference to red cords, but it is not a requirement of the standard.
DENAN is a mandatory national law administered by Japan’s Ministry of Economy, Trade, and Industry. Cords, plugs, and sockets must carry the PSE approval mark.The PSE mark is the minimum legal requirement for plugs. If you want to market your plugs as “hospital-grade,” you may perform in-house tests required by JIS T1021 and self-declare as “hospital-grade” conforming JIS T1021. UL may be able to perform tests per JIS T1021 and issue an informative report. Alternatively, you may get a JIS mark when your products and factory comply with JIS requirements. You will need to submit to a Japanese testing laboratory who is accredited by METI for the JIS Marking System.
Hospital-grade plugs, sockets, and cable mount connectors are subject to special requirements contained in the following standards: Medical equipment standards—UL 60601-1 and CAN/CSA C22.2 no 21; Power supply cord standards—UL 817 and CAN/CSA C22.2 no 21; and Attachment plug and receptacle standards—UL 498 and CAN/CSA C22.2 no 42. The hospital-grade plug diameter conforms to NEMA WD-6 and UL 817 standards: (1) the blades must be solid instead of folded brass, (2) the blades are usually nickel-plated, and (3) the plug includes an internal cable retention device or strain relief to prevent any stress to the plug’s internal connections.
Specifically, they must meet the requirements of UL 498 and UL 60601 for abrupt plug removal, ground pin retention, fault current, terminal strength, ground contact temperature and resistance, assembly security, cord grip strain relief and cord pull, and various durability and impact tests of the material.
North American hospital-grade cords must carry the “green dot” signifying that they have been designed and tested to UL 817 and CAN/CSA C22.2 no 21 as hospital-grade power cords and cord sets. Specifically, UL 60601-1 sections 57.2 and 57.3 require that “patient care equipment” used in the “patient vicinity” must use hospital-grade attachment plugs. “Patient care equipment” and “patient vicinity” are defined in UL 60601-1 sections 2.12.19 & 2.12.20.
Currently the UL 498 and 817 standards only allows the NEMA 5-15, 5-20, 6-15, and 6-20 straight blade devices to be marked “hospital-grade.” CSA will allow the NEMA 1-15 if double insulated and meets requirements.
Other international markets in regards to medical equipment, including European markets, typically must meet the EN/IEC 60601-1 standard. At this time, there are no special performance or construction requirements for cord sets used in these applications. Cord sets usually are Class I (with ground), PVC, and black in color.
For more information about hospital-grade products, see the Interpower website— http://www.interpower.com/ic/designers/in-depth-product-line-information/More-info-on-HospitalGrade-Products.html. If you have product questions, please feel free to email us at email@example.com or contact Customer Service at (800) 662-2290. Technical support is free and available from 7am–6pm Central Time.
If you have ideas for future InfoPower blogs, please email us at firstname.lastname@example.org.