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Power Monitoring Expert 8.2 - the SEMI F47 curve as available in the PQ Report is incorrect - attached SQL script will correct it

Published date: 18 September 2019

The PME 8.2 Power Quality offers the option to use the SEMI F47 curve. If this is used, you will notice that the curve is incorrect.
The SEMI F47 standard allows a 50% voltage sag for up to 0.2 seconds. The curve incorrectly uses 0.02 seconds, rather than 0.2 seconds as the tolerance for a 50% sag.

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Power Monitoring Expert 8.2

Using the PQ Report with the SEMI F47 curve.

The definition of the SEMI F47 in PME 8.2 is incorrect.


*Warning: Irreparable database damage can occur. This procedure should only be performed by users familiar with SQL Server Management Studio. Databases should be backed up prior to performing this procedure.*​

Log into SQL Server Management Studio and run the attached SQL script (PME8.2_SEMIF47_CurveUpdate.sql)  to correct the curve definition. See attached document

This problem has been addressed in PME 9.0

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