Two types of PSE technical standards

出典：電気用品安全法「特定電気用品」／経済産業省

Among the 116 items of PSE’s Specified Electrical Appliances and Materials, there are items that are subject to “DC power supply“, but general switching power supplies are not PSE’s “DC power supply”.
This is because switching power supplies are not used by themselves and are not applicable to PSEs that target final products because they are premised on being incorporated into equipment.

In order for a switching power supply to be a PSE target product, there are some conditions in terms of shape so that it can be used by itself.

PSE was changed from the ministerial ordinance item ◯ standard to the attached table ◯ in 2014, but the technical standard did not change and only the construction changed. PSE has traditionally had two technical standards.

* There is no original technical standard of Appended Table 12, and the international technical standard of IEC becomes the technical standard of ” Appended Table 12″ as it is.

経産省：電気用品の技術上の基準を定める省令の解釈について

The technical standards for switching power supplies are shown in ” Appended Table 8″ as “DC power supply”, and in ” Appended Table 12″, IEC international standards are specified as “power supply”.

There is no difference in PSE regardless of whether you obtain PSE in ” Appended Table 8″ or ” Appended Table 12″.

It is not that which technical standard is more difficult or easier, but the items of the technical standard are different. The 12th international standard in Appended Table 12 has strict EMC (electromagnetic compatibility) and harmonic current regulations, and Appended Table 8 in the domestic standard has stricter insulation distance and creepage distance.

Which PSE should be obtained？

Since the design standards and test methods of switching power supply manufacturers comply with the international standard IEC60950-1, it is not difficult to obtain a PSE in ” Appended Table 12″.
On the other hand, in order to obtain PSE in ” Appended Table 8″, the edge surface, space, and insulation distance between the transformer and the circuit board are stricter than IEC60950-1 in ” Appended Table 12″, so the power supply itself becomes large.
Then, I think that you should get PSE in “Appended Table 12”, but there is one problem.

　When a manufacturer acquires a PSE, for example, if a switching power supply that has acquired the PSE in ” Appended Table 8″ is purchased and the device side also applies for PSE in the same ” Appended Table 8″, as long as the switching power supply is used within the standard. Does not require re-evaluation of the power supply.

On the other hand, if the device side obtains a PSE that is different from the switching power supply, the conformity test for the power supply will not be simplified. For example, when the device is trying to acquire PSE in Appended Table 8 and the built-in switching power supply has acquired PSE in Appended Table 12. In this case, it is necessary to evaluate the entire device in Appended Table 8, that is, to re-evaluate the power supply section in Appended Table 8.

Details are described in “Handling of DC power supplies for lamp appliances” by the Ministry of Economy, Trade and Industry.

A common problem is that switching power supplies are incompatible in Appended Table 8. This happens because the technical standards of PSE are different between (1) domestic standards and (2) international standards. Specifically, it is the transformer of the switching power supply and the edge surface, space, and insulation distance of the circuit board. In this case, the design of the switching power supply itself must be changed, which is not realistic. When applying for a PSE for a device, it is wise to first look for a switching power supply that has the same PSE as the PSE you are trying to obtain.

WordPress › エラー

dengen-navi.com

Those who want to know about PSE of switching power supply

“I know PSE is a safety standard, but I’m not sure what it is in the first place.
Is there a switching power supply that is approved for PSE?
How can a switching power supply be PSE certified? ”

I will answer these questions.

As I write this article, I have actually had the experience of adapting switching power supplies to the PSE standard.
The power supply was a 100W board type power supply put in a case and the harness was taken out. The PSE certification cost was about 300,000 to 400,000 yen per model.

If you want a switching power supply to meet the PSE standard, what kind of power supply can meet the PSE standard? Is this right? If you are uneasy, please refer to it.

However, it is best to have an inspection agency confirm the delicate judgment.
Judgment may change depending on the inspection agency.

Telephone consultation with the inspection agency is free for the first 30 minutes.
When it comes to concrete things, the time runs out.

What is PSE in the first place?

Formally, it is called the “Product Safety Electrical Appliance and Material”.
It is a law designed to prevent people from being injured by AC-input electrical appliances.

The Electrical Appliance and Material Safety Law is a law, so breaking the Electrical Appliance and Material Safety Law violates the law. There are no fines or imprisonment, but you may be issued an on-site inspection by the Ministry of Economy, Trade and Industry, an order for remedial measures, and an order to collect the product.

Electrical products subject to PSE cannot be sold without the “PSE mark” to the effect that they comply with national technical standards. It is the same when importing electrical products but selling them domestically.

There are the following two types of electrical equipment.

“Specified Electrical Appliances and Materials” are electrical products with a relatively high risk, and the others are divided into “Non-Specified Electrical Appliances and Materials“. The electrical appliances below that we usually use at home are classified as “Non-Specified Electrical Appliances and Materials“.

Non-Specified Electrical Appliances and Materials

 

Source: Ministry of Economy, Trade and Industry (Electrical Appliance and Material Safety Law)

Non-specific electrical appliances (341 items) are general electrical appliances (dryers, hot plates, electric kotatsu, irons, etc.). It is a home appliance that we usually use. It is called “Round PSE” because of its mark.

In order to sell non-specific electrical products domestically, the seller is obliged to check for himself whether the product complies with PSE (self-declaration).

For example, when a Japanese importer imports “non-specific electrical products” from China and sells them in Japan, the PSE confirmation test is conducted at a factory in China, the PSE mark is attached, and the product is exported to Japan. Japanese importers must check the PSE test data to see if they comply with the PSE standard.
In addition, it is obligatory to keep the test data and submit it immediately when requested by the Ministry of Economy, Trade and Industry. Even if it is a self-declaration, the importer cannot sell non-specific electrical products domestically without doing anything.

Ministry of Economy, Trade and Industry / Enforcement of the revised government ordinance of the Electrical Appliance and Material Safety Law

In fact, it turned out that there was no test data for 80 Round PSE electrical products made by KONAN in China in 2014, and it was recalled for product recall and is still being recalled. The reason is that there is no inspection record and it seems that the importer, KONAN, did not confirm it. However, I think it would be better to check the test later, but of course it is not legal after domestic sales.

Important notice for recall products of KONAN Shoji

Specified Electrical Appliances and Materials

Source: Ministry of Economy, Trade and Industry (Electrical Appliance and Material Safety Act)

Specified Electrical Appliances and Materials (116 items) are high-risk products (electric wires, fuses, switches, vending machines, washlets, massage machines, etc.) and are called “Diamond PSE” from the mark. Among them is the “DC power supply“.

This PSE cannot be tested and confirmed by yourself, and inspection by an inspection agency is obligatory.
An inspection agency is an inspection agency registered with the Ministry of Economy, Trade and Industry. There are 7 companies in Japan such as incorporated associations and joint-stock companies