What is PD IEC TR 61000-4-40 about?
PD IEC TR 61000 is a series on electromagnetic compatibility. Electromagnetic compatibility (EMC) is the ability of electrical equipment and systems to function acceptably in their electromagnetic environment, by limiting the unintentional generation, propagation and reception of electromagnetic energy which may cause unwanted effects such as electromagnetic interference (EMI) or even physical damage in operational equipment. PD IEC TR 61000-4-40 is a Technical Report, deals with the assessment of electrical power quantities (RMS voltage, RMS current and active power). PD IEC TR 61000-4-40 explains and compares two digital algorithms suitable for power quantity measurements in fluctuating or non-periodic loads. The examples are from 50 Hz or 60 Hz power systems.
PD IEC TR 61000-4-40 aims to highlight some examples of applications that illustrate how the presented algorithms work. Further, guidance is given for quantifying the accuracy of each approach.
Note: PD IEC TR 61000-4-40 does not attempt to cover all possible digital implementations of the algorithms used for power quantity assessment in fluctuating loads, for example in the context of the EMC assessment described in several IEC documents.
Who is PD IEC TR 61000-4-40 for?
PD IEC TR 61000-4-40 on electromagnetic compatibility is useful for:
- Telecommunication sectors
- Electronic equipment manufacturer
- Design engineer
- Research and development facilities
Why should you use PD IEC TR 61000-4-40?
The goal of electromagnetic compatibility is the correct operation of different equipment in a common electromagnetic environment. It is also the name given to the associated branch of electrical engineering. PD IEC TR 61000-4-40 gives the rationale for the assessment of electrical power quantities (RMS voltage, RMS current and active power) under non-stationary conditions. PD IEC TR 61000-4-40 explains and compares two digital methods that can be used in digital measurement instrumentation to either average or filter the signals when measuring fluctuating loads, and algorithms for the realization of both methods. The examples relate to 50 Hz or 60 Hz power systems because power quantity assessments are predominantly required for these systems.
The digital averaging or integration algorithm is evaluated for fluctuating, or non-stationary, conditions, as is a digital filtering algorithm that emulates the traditional analogue power meter.
Using PD IEC TR 61000-4-40 you can explain and compare two digital algorithms suitable for power quantity measurements in fluctuating or non-periodic loads.