International Electrotechnical Commission
Glossary

Terms defined in IEC 61000-3-14

3.195 % (99 %) probability weekly (daily) value
3.2agreed power
3.3customer
3.4(electromagnetic) disturbance
3.5disturbance level
3.6disturbing installation
3.7electromagnetic compatibility, EMC
3.8(electromagnetic) compatibility level
3.9emission
3.10emission level
3.11emission limit
3.12generating plant
3.13immunity (to a disturbance)
3.14immunity level
3.15.1large installation
3.15.2small installation
3.16normal operating conditions
3.17planning level
3.18point of common coupling, PCC
3.19point of connection, POC
3.20point of evaluation, POE
3.21public low-voltage power system
3.22short circuit power
3.23spur
3.24supply system
3.25system operator or owner
3.26transfer coefficient (influence coefficient)
3.27phenomena related definitions, harmonics
3.27.1fundamental frequency
3.27.2fundamental component
3.27.3harmonic frequency
3.27.4harmonic component
3.27.5interharmonic frequency
3.27.6interharmonic component
3.27.7total harmonic distortion, THD
3.27.8distorting installation
3.27.9non-linear load or equipment (see also distorting installation)
3.28.1flicker
3.28.2rapid voltage changes
3.28.3fluctuating installation
3.28.4voltage fluctuations
3.29phenomena related definitions, unbalance
3.29.1voltage unbalance (imbalance)
3.29.2positive-sequence component of 3-phase voltages (or currents)
3.29.3negative-sequence component of 3-phase voltages (or currents)
3.29.4zero-sequence component of 3-phase voltages (or currents)
3.29.5voltage unbalance factor, u
3.29.6current unbalance factor, IUF
3.29.7unbalanced installation