E-Mon E-PS-A-RTU-N - Manual (Page 87)

Chapter 4 Power
S O F T W A R E E N 5 0 1 6 0 E V A L U A T I O N A N D
R E C O R D I N G
PowerSmart+ Advanced Power Quality Meter 87
Resources
CENELEC publications:
EN 50160:1999 Voltage characteristics of electricity supplied by public distribution systems
IEC publications:
IEC 61000-4-7:2002 Electromagnetic compatibility (EMC) – Part 4-7 Testing and
measurement techniques – General guide on harmonics and interharmonics measurements
and instrumentation, for power supply systems and equipment connected thereto,
IEC 61000-4-15:2003 Electromagnetic compatibility (EMC) – Part 4 Testing and
measurement techniques – Section 15: Flickermeter – Functional and design specifications
IEC 61000-4-30:2003 Electromagnetic compatibility (EMC) – Part 4-30 Testing and
measurement techniques – Power quality measurement methods
Eurelectric (Union of the Electricity Industry) publications:
Application guide to the European Standard EN 50160 on Voltage characteristics of
electricity supplied by public distribution systems, Ref: 23002 Ren9530, July 1995
Measurement guide for voltage characteristics, Ref: 23002 Ren9531, July 1995
Evaluation Techniques Evaluation Techniques Evaluation Techniques Evaluation Techniques
EN50160 Evaluation Counters
Evaluation Counters and Evaluation Period
The PowerSmart+ Advanced PQM uses a set of the evaluation counters for
collecting EN50160 statistics within a specified evaluation period.
The evaluation period is the period of time within which the meter collects statistical
evaluation data. Supply voltage characteristics can be evaluated on a weekly or daily
basis. The evaluation period being normally preset in your meter to a week can be changed
via the EN50160 Advanced setup.
At the end of the evaluation period, the meter records collected statistical evaluation data to
a log file, and then clears the evaluation registers and counters so that each evaluation
period’s statistics is stored in a separate record.
You can upload and view the online statistics data via Power Software reports, using data
collected since the beginning of the present evaluation interval. You can also manually
clear the present contents of the counters though Power Software before starting your
EN50160 evaluation.
Observation Period
The observation period is the period of time within which the voltage characteristics shall
be assessed to ensure compliance with the standard. The observation periods declared by
the EN50160 may differ for characteristics for which compliance limits are specified in the
standard, usually one week, and for those for which only indicative values are provided,
usually one year.
The EN50160 compliance reports produced by Power Software provide correct weekly and
yearly observation statistics regardless of the evaluation periods used for collecting data.
Whenever needed, Power Software will aggregate records within a number of the
evaluation intervals to provide correct observation periods. Some of the characteristics, like
rapid voltage changes or mains signaling voltage, may require daily assessments. If you
intend to use daily-evaluated voltage characteristics, select the daily evaluation period via
the EN50160 Advanced setup.
EN50160 Compliance Statistics Log
Data log file #9 is automatically configured in the PowerSmart+ Advanced PQM for
recording EN50160 compliance statistics. Appendix E lists parameters recorded to the file.
The file is arranged as a multi-section data log file where each voltage characteristic
statistics is stored in a separate section. Along with EN50160 compliance statistics