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© 2011 Schneider Electric. All Rights Reserved.
PowerLogic
TM
Series 800 Power Meter 63230-500-225A2
Appendix D—Advanced Power Quality Evaluations 3/2011
104
Alarms Allocated for PQ Advanced Evaluations
To accomplish some of the evaluations required and to provide a record of events in the
on-board alarm log, the PM850 uses standard alarms, and the PM870 uses disturbance
alarms. When the evaluation is enabled, certain alarm positions will be claimed and
automatically configured for use in the evaluation. You cannot use these alarms for other
purposes while the evaluation is enabled. These alarms include:
• Over Voltage (PM850): Standard speed alarm positions 35-37
• Under Voltage (PM850): Standard speed alarm positions 38-40
•
Disturbance for Voltage Swells and Sags (PM870): Disturbance alarm positions 1-3 and 7-9
NOTE: The position depends on the system type (register 3902).
“PQ Advanced” is included in the alarm label for alarms being used by this evaluation.
Setting Up PQ Advanced Evaluation from the Display
To set up the PQ Advanced evaluation in the power meter, you need to perform these
steps using the meter set-up procedure:
1. Enable the PQ Advanced evaluation.
By default, the PQ Advanced evaluation is disabled. To enable the evaluation, use the
display (see “PQ Advanced Evaluation Setup” on page 22).
2. Select the nominal voltage of your system.
NOTE: The EN50160 standard defines nominal voltage for low-voltage systems to be
230V line-to-line for 3-wire systems or 230V line-to-neutral for 4-wire systems.
Therefore, the default value for Nominal Voltage is 230.
If the application is a medium-voltage system, or if you want the evaluations to be
based on some other nominal voltage, you can configure this value using the display
only. PowerLogic software does not allow configuration of nominal voltage
3. Select the nominal frequency of your system.
NOTE: The EN50160 standard defines nominal frequency as 50 Hz, but the PM850 and
the PM870 can also evaluate 60 Hz systems. They cannot evaluate nominal frequency
for 400 Hz systems.
The default nominal frequency in the PM850 and the PM870 is 60 Hz. To change the
default, from the display Main Menu, select Setup > Meter > Frequency. From
PowerLogic software, see the online help file.
4. Reset the PQ Advanced Statistics.
a. Write 9999 in register 8001.
b. Write 11100 in register 8000.
Refer to “Resetting Statistics” on page 99.
5. Reset the ITI (CBEMA) and SEMI F-47 Statistics.
a. Write 9999 in register 8001.
b. Write 11200 in register 8000.
Refer to “Resetting Statistics” on page 99.