What is PD IEC TR 62059-21 – Collection of meter dependability data from the field about? 
When it comes to electricity supply systems, the performance and reliability of electricity metering equipment are essential for fair and accurate meter readings. 
PD IEC TR 62059 is a standard that discusses electricity metering equipment. 
PD IEC TR 62059-21 is the 21st part of the series that describes methods for the collection and analysis of field failure data of static electricity metering equipment using field failure reports and sampling plans.
To make results comparable, definitions of equipment complexity and classification of failures are given in PD IEC TR 62059-21.
A failure reporting form is also provided in annex A of PD IEC TR 62059-21.
Who is PD IEC TR 62059-21 - Collection of meter dependability data from the field for?  
PD IEC TR 62059-21 on collection of meter dependability data from the field is relevant to:  
- Electric meter manufacturers and purchasers 
- Anyone involved in the design, installation, maintenance and commissioning of electric meters 
- Power distribution and transmission companies  
- Local authorities  
- Inspection authorities 
- Regulatory bodies 
- Engineers 
Why should you use PD IEC TR 62059-21 - Collection of meter dependability data from the field? 
Dependability is defined as the collective term used to describe the availability performance and its influencing factors: reliability performance, maintainability performance and maintenance support performance. Collection of this data is crucial to identify and mitigate product failures for accurate meter performance.
PD IEC TR 62059-21 covers a wide range of static electricity metering equipment from simple time switches to complex multi-energy and multi-tariff meters. In order to create homogeneous populations as required by the relevant standards, a method for equipment classification is given.
As a result, the results of field data collection can be compared with reliability requirements.
Additionally, guidance on operating conditions, classification and identification of the root cause of failures, and data collection through sampling plans, are covered by PD IEC TR 62059-21.
Thus, with best industry methods for collection and analysis of field failure data, PD IEC TR 62059-21 plays a positive role in minimizing the risk of product failures, such that static metering equipment and its functions that have an impact on billing as well as auxiliary functions, enhance the reliability and accuracy of meter readings.
