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New SAE Standard Defines Electric-Vehicle Charging Coupler
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SAE International has released a standard that provides a standard interface between plug-in hybrid and battery-electric vehicles, and electrical charging systems.
Standard J1772(TM), "SAE Electric Vehicle Conductive Charge Coupler," spells out the general physical, electrical and performance requirements for the coupler, which consists of a connector and vehicle inlet.The purpose of the standard is to define a common electric-vehicle charging network, thereby reducing costs and increasing convenience for owners of electric vehicles.
The Standard J1772 can charge at either 120 V or 240 V and deliver up to 70 amps at the higher voltage. The standard will also support communication over power lines, which will help with vehicle identification and load shifting of these vehicles. It has 5 pins, 2 for power, 2 for communications, and 1 for ground.
The J1772 should be good for over 10,000 insertion/removal cycles.If you plug in twice a day, that's something like 13 years of service.
SAE International is a leading standards organization identified in the NIST Framework and Roadmap for Smart Grid Interoperability Standards for Interoperability Standards to Support Plug-In Electric Vehicles and as collaborators for Energy Storage Interconnection guidelines.
In the process of SAE J1772(TM) development, a production tooled coupler has passed testing by Underwriters Laboratories for safety and durability.
SAE J1772(TM) standard was developed by the SAE Hybrid J1772 Task Force in cooperation with major automotive OEMs and suppliers, charging equipment manufacturers, national labs, utility companies, universities and standards organizations from North America, Europe and Asia.
The document is published and can be purchased at http://www.sae.org/technical/standards/J1772_201001.
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