Electromagnetic compatibility

Electromagnetic compatibility (EMC) covers how electrical devices affect each other through the electromagnetic fields they produce. Devices should not keep interfering with one another on the AC side. PV inverters are held to the same EMC standards as household appliances such as hair dryers and refrigerators. EMC standards cover two things: emission, meaning how much interference a device gives off, and immunity, meaning how well it resists interference from outside. Each has separate versions for residential and commercial settings and for industrial settings. Equipment sold in Europe declares conformance with the EMC Directive 2014/30/EU. SMA lists the EMC standards each inverter meets in the EC declaration of conformity that ships with it. In the field, many EMC problems, such as radio frequency interference, come from how the system was installed rather than from faulty equipment, so check the installation first.

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• sentence 4: support check: partial - Directive conformance and SMA's EC declaration listing standards are stated, but 'equipment sold in Europe' declaring conformance is a generalization not stated.
• sentence 5: support check: partial - Passage supports many EMC issues stemming from installation not defects, but not the RFI example or the advice to check installation first.
• sentence 4: review: partial - The SMA part (standards listed in the EC declaration shipped with every inverter) is supported, but the passages show only one Phoenix Contact product conforming to 2014/30/EU, not that all equipment sold in Europe declares it. -->