GB/T 4343.2-2020 "Electromagnetic compatibility requirements for household appliances, electric tools and similar appliances Part 2: Immunity" is officially released on 2020-12-14 and officially implemented on 2021-07-01, which will replace GB/ Compared with the previous version of T 4343.2-2009, the main technical changes are as follows:

Third-party testing

5.1:

Used for electrostatic testing on connecting plugs and sockets ("4KV contact discharge should be applied to conductive and accessible parts. For example, metal contacts in battery compartments or sockets are excluded.") It means that there is no need to test the contacts. GB/T 17626.2-2018 includes detailed instructions on how to handle electrostatic discharge (ESD) on contacts and other surfaces. At the same time, the basic standard GB/T 17626.2-2018 requires discharge on the horizontal coupling plate (HCP) and vertical coupling plate (VCP)

5.3 and 5.4

According to GB/T 17626.6-2017, the DC power port test table is aligned with the general standard, and it is the same for 5.3 and 5.4

For EUTs that use single-wire cables and no other cables, use the test setup shown in Figure 2 in the standard, and should not use the setup described in Annex F of GB/T 17626.6-2017

Certification testing

5.5

GB/T 17626.22-2017 as an alternative method of radiated immunity test

5.6

Line-to-ground surge is not applicable to products that are not grounded