EMC compliance question

Oct 09, 2024 Last reply: 1 year ago 46 Replies

Telecom standards tend to mirror BellCore regs.

RL

Since they are published internationally, they don't protect the local industry all that well. When I was working in England we paid attention to the American Underwriter's Laboratory standards so we could sell our stuff in the US.

Americans are cynical about CE. When I was designing stuff in Europe we did take it seriously - just as seriously as UL.

And thinking about that, the ringing voltage was close to 100Vrms, and using flimsy connectors. Amazing that was legal

If you have a European (or any international) market, you have to take the IEC regulations seriously - even UL's and CSA's later standards were/are coordinated with them . . . .with national exceptions.

Their origins are found in the old GDR VDE standards that spawned them and the regular revisions to current IEC regs keep foreign designers hopping.

The actual standards that CE implies are widespread, including such features as organizational (quality and recording), environmental (process and material) - not just safety and EMC.

These are all apparently self-declared - compliance lists and proof being available 'on request'.for inspection. Any product that threatens markets seriously will be challenged - but a serious amount of capital is transgerred just through the distribution of consumer trash.

Asian standards similarly mimic the IEC coat hangers, but their purpose can be almost decorative, until they are not.

RL

[snip]

A list of fines if you place products on the EU marked without CE or non-compliant CE:

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Single-fault abnormals look at steady state results - an overvoltage protection that prevents a continuous hazard (ie latching OVP) is sufficient.

RL

by steady-state the reference is to a chimpazeeish time constant - as I recall there's a chart or simple time statement. The single-fault stimulous is continuous.

RL

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