UL 2738 - the first UL standard for wireless charging devices for use with low-energy products
UL has recently published the first-edition standard for induction power transmitters and receivers for use with low-energy products. UL 2738 applies to induction power transmitters, such as wireless battery chargers that employ magnetic induction coils to transmit energy to receiving coils in low-energy devices such as cell phones, portable media players and global positioning devices.
With the rapidly growing options for wireless charging, wireless power interoperability across rechargeable electronic devices will be expected. Increasingly more new technologies and innovations are introduced to market as wireless technology becomes more commonplace.
As a leader in public safety, UL realized that the development of a new standard for the emerging wireless technology would be critical to ensure that safety stays a primary focus. A new standard will also enable manufacturers to consider safety even at the beginning of the product development phase.
UL 2738, the standard for induction powered transmitters and receivers for use with low-energy products, applies to:
a) Induction power transmitters intended to be supplied by an internal or external power source, which is powered by a branch circuit of 600 volts or less; and
b) Induction receivers intended for use with induction power transmitters.
Unless the combination receiver and supplied equipment comply with an applicable end-product Standard, the output from an induction receiver assembly does not exceed:
a) 60 V dc or 42.4 V ac peak; and
b) 100 VA capacity.
In the past year, the new standard underwent a comprehensive review process by a global Standards Technical Panel (STP), open to manufacturers, supply chain players, government representatives, and consumers. By getting products in conformance with this technology-specific safety standard, manufacturers will be able to provide a solid safety proof to their stakeholders in the supply chain which include their customers, retailers and end consumers. Manufacturers wishing to be well-prepared can download the new standard from http://www.comm-2000.com/ and arrange a consultative session with a UL engineer.
For questions or further information, contact Asli Solmaz-Kaiser, Business Development Manager for Batteries and Power Supplies.