Why a TÜV inspection according to GB 3836.3 is not an ATEX approval
Recently, the market has increasingly advertised “explosion-proof” or “Ex-certified” solar modules. A TÜV SÜD inspection for modules from the manufacturerTÜV SÜDfor modules from the manufacturerAiko Solar.
The communication partially gives the impression that these modules are approved for use in explosion-risk areas according to European ATEX law.
This conclusion is technically and legally incorrect.
What was actually tested
According to publicly available manufacturer information, the testing wasnot according to European ATEX law, but according to the Chinese explosion protection standardGB 3836.3.
This standard is substantively aligned with the international standardIEC 60079-7 (Increased safety "Ex e") is based on, but does not belongtothe harmonized standards system of the European Union.
The test result can be summarized as follows:
The module was tested to ensure that under defined conditionsit does not present an effective ignition source.darzustellen.
More – but not less.
What does notfollowFrom a test according to GB 3836.3, there are
noneof the following statements:no ATEX approval according to
Directive 2014/34/EUno Ex marking according to
EN 60079no automatic usability in
Zone 1 or Zone 2no legally secure basis for planning, tendering, or operation in ATEX areas in the EU
The name of the testing body (e.g., TÜV SÜD)
does not change this.. What matters is solely theunderlying standard and the legal framework.Why the marketing representation is critical.
Formulations such as
"explosion-proof", "Ex-certified", "world’s first TÜV certified"
are not necessarily wrong in themselves – however, they remain
deliberately vague.bewusst unscharf.
In the European market, this can easily create the impression that it is anATEX-approved operating device, although this requirement is actuallynot fulfilledis.
For operators, planners, and dealers, this can mean significant risks:
incorrect zoning classifications
unauthorized use of operating resources
liability issues in case of damage
problems with authorities, insurers, or experts
Clear classification for the European market
Technically correct, the status can be described as follows:
The solar module has been tested by TÜV SÜD according toGB 3836.3.
There isno ATEX certification according to EU Directive 2014/34/EUavailable.
Thus, the module isnot an ATEX device in the sense of European explosion protection law.
Conclusion
International testing and constructive measures to reduce ignition sources are technically sensible and commendable.
However, for thecompliant use in explosion-risk areas in Europethey do not replacea formal ATEX approval.
Anyone planning or operating explosion-risk areas should not rely on marketing statements, but should always check:
which standard was tested
for which legal area the certificate applies
whether an ATEX declaration of conformity is available
Only this creates legal and technical security. Here write …