Schneider Electric PM850 Operation with PQ Advanced Enabled, Resetting Statistics, Time Intervals

63230-500-225A2	PowerLogicTM Series 800 Power Meter
3/2011	Appendix D—Advanced Power Quality Evaluations

Operation with PQ Advanced Enabled

This section describes how PM850 and PM870 EN50160 evaluation operation is affected when PQ Advanced evaluation is enabled.

Resetting Statistics

You can reset statistics for the EN50160 evaluations with the command 11100. A parameter value of 9999 will reset all items. A timestamp is provided in registers for each item indicating when the last reset was performed. This command is disabled when revenue security is active.

NOTE: You should reset statistics when you enable EN50160 for the first time and also whenever you make any changes to the basic meter setup such as changing the nominal voltage. See “Setting Up PQ Advanced Evaluation from the Display” on page 104.

Harmonic Calculations

When PQ Advanced evaluation is enabled, the harmonic calculations will be set to update every 10 seconds. You can select the format of the harmonic calculations to be %Nominal, %Fundamental, or %RMS.

Time Intervals

Time intervals are synchronized with the Trending and Forecasting feature. For additional information, refer to the Schneider Electric POWERLOGIC Web Pages Instruction Bulletin (document # 63230-304-207). Weekly values will be posted at midnight of the morning of the “First Day of Week” configured in register 3905. Yearly values will be based on the calendar year.

All of the EN50160 data is stored in non-volatile memory once per hour or when an event occurs. In the event of a meter reset, up to one hour of routine meter evaluation data will be lost.

Advanced Power Quality Evaluation System Configuration and Status Registers [EN50160 and SEMI-F47/ITI (CBEMA)]

Table D–11lists registers for system configuration and status evaluation.

Table D–11: PQ Advanced Evaluation System Configuration and Status Registers

Register

Number

Description

		Enable/Disable PQ Advanced Evaluation
3900	1	0	= Disable (default)
		1	= Enable
3901	1	Nominal Voltage, (copied from register 3234 for reference)
		Default = 230
		Voltage Selection for 4-Wire Systems
3902	1	0	= Line-to-Neutral (default)
		1	= Line-to-Line
3903	1	Nominal Frequency, Hz (copied from register 3208 for reference)
		Default = 60
		Frequency configuration
3904	1	0	= system with synchronous connection to interconnected system (default)
		1	= system without synchronous connection to interconnected system
		First Day of Week (EN50160 only)
		1	= Sunday
		2	= Monday (default)
3905	1	3	= Tuesday
		4	= Wednesday
		5	= Thursday
		6	= Friday
		7	= Saturday

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