TS 9201

TS 9201 is a terminology standard for the disturbances that household appliances and similar electrical equipment can cause in electrical supply systems. Rather than prescribing product performance or test procedures, this part defines the vocabulary used for concepts such as harmonics, voltage changes, flicker, and related supply-system effects.

What this terminology framework is for

In technical practice, a terminology standard helps engineers, laboratories, manufacturers, and utilities use the same words for the same phenomena. Disturbance in a supply system refers to departures from the ideal steady, sinusoidal voltage and current conditions expected in power networks. Household and similar loads may create current fluctuations, non-linear waveforms, or switching effects, and these need clear names so that reports, discussions, and specifications are consistent.

Why the distinctions matter

Terms such as harmonics, impedance-related effects, voltage change, and flicker describe different aspects of power quality and network interaction. Keeping them separate matters because they are not interchangeable: each points to a different mechanism, different measurement context, and different engineering response. TS 9201 supports that precision by standardizing the language around these disturbance phenomena.

• Defines terms linked to disturbances caused by household appliances and similar electrical equipment.
• Covers vocabulary associated with harmonics, voltage changes, flicker, and related supply-system effects.
• Supports consistent technical communication in electrical engineering and power-system contexts.
• Focuses on definitions, not on product design or compliance testing.