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Series "PSE" Part 2: "About Electrical Products"
What is "PSE" in AC/DC power adapters—desktop & wall-mount types and switching power supplies? This is the second installment in a series that explains it clearly.
Explanation Revisited: What is the Electrical Appliance and Material Safety Act (PSE)?
About Electrical Products Subject to PSE
Previously, we explained "What is PSE?".
In summary, "PSE" refers to product safety standards based on the Electrical Appliance and Material Safety Act, which imposes obligations on manufacturers or importers to "prevent danger and harm caused by electrical products".
Please refer to the link below for the previous newsletter.
This time, we will explain the "electrical appliances" subject to PSE.
The "electrical appliances" defined by the Electrical Appliance and Material Safety Act include our AC/DC Power Adapters — Desktop & Wall-Mount = DC power supplies as "specified electrical appliances", as well as "non-specified electrical appliances" such as televisions and air conditioners, totaling 457 items across 116 and 341 categories respectively.
Specified electrical appliances are considered to pose a high risk of danger due to their structure or usage, and include: ① items used unattended for long periods, ② items used by socially vulnerable people, and ③ items that come into direct contact with the human body.
PCs and printers are not treated as electrical appliances, and therefore fall outside the regulations of the Electrical Appliance and Material Safety Act.
Concept of Electrical Appliances — Reprinted from METI’s Implementation Manual on the Electrical Appliance and Material Safety Act
Note that the names of “electrical appliances” under the law do not always match the generally used "product names". Below is a comparison using AC/DC Power Adapters — Desktop & Wall-Mount as an example.
| Common Names | AC/DC Power Adapters — Desktop & Wall-Mount Chargers Battery Chargers, etc. | Plug Adapter Conversion Adapter Socket Conversion Adapter |
|---|---|---|
| Legal Electrical Appliance Name | DC Power Supply | Adapter |
| Appearance |
|  |
The differences between specified electrical appliances and non-specified electrical appliances are summarized in the table below.
Except for the items "Conformity Test" and "Validity Check of Certificate / Copy of Equivalent Certificate", both types undergo common safety verification procedures.
| Procedures under the Electrical Appliance and Material Safety Act (for importers) | Specified Electrical Appliances | Non-Specified Electrical Appliances |
|---|---|---|
| Confirmation of Name and Model Type | Required | Required |
| Business Notification | Required | Required |
| Technical Standard Compliance Obligation | Required | Required |
| Conformity Test | Required | Not Applicable |
| Certificate Validity Check Copy of Equivalent Certificate Validity Check | Required | Not Applicable |
| Self-Inspection | Required | Required |
| Display | Required | Required |
| Sales Restriction | Required | Required |
If you want to learn more about the differences between "specified electrical appliances" and "non-specified electrical appliances", as well as technical standards, please refer to the "Implementation Manual on the Electrical Appliance and Material Safety Act" published by METI at the link below.
https://www.meti.go.jp/policy/consumer/seian/denan/file/06_guide/denan_guide_ver41.pdf
In our next article, we will explain "about technical standards".