TS IEC 60050-300/A3

TS IEC 60050-300/A3 is an amendment to the International Electrotechnical Vocabulary (IEV) covering electrical and electronic measurements and measuring instruments. Documents of this kind standardize the technical language used for metrology, instrument types, and the distinctions between related measuring concepts, helping engineers, test laboratories, and manufacturers use the same terms consistently.

How instrument-type terminology is organised

The Part 314 focus is about naming measuring instruments according to their type and function. In general technical practice, this helps distinguish concepts such as indicating and recording instruments, analogue and digital displays, direct and indirect measurement, and systems that operate with auxiliary components. As a vocabulary standard, its role is to align terminology rather than to prescribe a new measurement method.

In electrical and electronic measurement, shared terminology matters because the same measured quantities may be handled by very different instrument principles. Current, voltage, resistance, power, frequency, and energy can all be measured with devices that differ in design and operating principle, so classification by instrument type reduces ambiguity in documentation, calibration work, and laboratory communication. As an amendment, this document updates the vocabulary structure in the parent IEV part and should be read as part of that broader conceptual framework.

• Provides common terminology for electrical and electronic measurements.
• Clarifies how measuring instruments are named by type and function.
• Supports consistent language in calibration, laboratories, and technical documentation.
• It is an amendment to a vocabulary document, not a new measurement method standard.