SINGAPORE: REQUIREMENTS FOR AC ADAPTORS OVER 100W

by | Oct 19, 2023 | Newsletter

CPSO has issued a circular, CPSO-070923-11, to clarify the testing and certification requirements for AC adaptors which can deliver more than 100W of power (>100W), under IEC 62368-1 as follows:

  1. Requirements for AC Adaptors tested to IEC 62368-1:2018 and earlier
    • Clause 6.6. of IEC 62368 (Ed. 3.0 and earlier) only allows for AC adaptors that can deliver >100W to connected equipment if the connected equipment also complies with IEC 62368-1.
    • To fulfill clause 6.6, suppliers of AC adaptors that can deliver >100W shall provide assurance that their AC adaptors will only be used with connected equipment that are also compliant to IEC 62368-1, using on one or more of the following methods:
      1. Incorporating handshaking methods such as Extended Power Range (EPR) capability into the AC adaptor and intended connected equipment(s). This will ensure the AC adaptor will only output >100W when supplying power to the intended connected equipment; or
      2. Designing the AC adaptor’s connectors such that it can only be connected to intended equipment; or
      3. Additional instructional safegauards on the AC adaptor, such as the following text: ‘This AC adaptor can output more than 100W. Please monitor the adaptor while charging.’; or
      4. Ensure that the AC adaptor is not supplied as a standalone item, and only sold when bundled together with the specific model and/or brand of connected equipment compliant with IEC 6236801; responsible suppliers choosing this approach will need to submit a declaration letter on company letterhead, containing the following information:
        • Declaration that the AC adaptor will not be supplied as a standalone item
        • Information on  connected equipment the AC adaptor will be bundled with
  2. Requirements for AC adaptors tested to IEC 62368-1:2023
    • Clause 6.6 of IEC 62368-1 (Ed. 4.0) allows for AC adaptors that can deliver >100W to a connected equipment if power is not delivered via a communication port.
    • AC adaptors that can deliver >100W to a connected equipment are unlikely to deliver power via a communication port. Hence, most AC adaptors which deliver >100W to a connected equipment fully comply with IEC 62368-1 (Ed. 4.0) without needing further requirements.

Already-certified AC adaptors that can deliver >100W to connected equipment need to comply with the requirements specified in the circular during their CoC renewal.