Multi-Tech Systems 7500 - Manual (Page 60)

Power Quality Configuration ION 7500 / ION 7600 User’s Guide
Page 60 Chapter 3 - Default Meter Functionality
Besides NomVolts, the only setup registers that you may need to change in the Sag/
Swell module are Swell Lim and Sag Lim. Most applications are served by the
default values entered into these registers. The Change Crit and EvPriority setup
registers do not need to be changed for normal operation.
N OTE
If the Sag/Swell module’s Nom Volts setup register is set to zero, all Sag/Swell module functions are
disabled. Nom Volts is typically set when the meter is put into service. If Nom Volts has not been set, enter
a value for your system’s nominal voltage (i.e. 120, 277, or 347). The value you enter will also be used
by the Transient module and in all EN50160 compliance calculations with the ION 7600.
Transient Module Settings (ION 7600 only)
The Transient module monitors voltage waveforms for transient activity (i.e., ITI
(CBEMA) Type 1 disturbances). The Threshold setup register defines what voltage
disturbance magnitude should be considered as transient activity. Threshold is
interpreted as a percentage of the nominal system voltage, plus 100. For example,
if you want transients recorded when voltage deviates from nominal by 20%, enter
120 into the Threshold setup register.
EN50160 Settings (ION 7600 only)
The EN50160 framework is composed of numerous ION module types including:
Mains Signaling Evaluation, Harmonics Evaluation, Voltage Harmonics, Flicker,
and more. Refer to the technical note Power Quality: ION Meters and EN50160 for
details.
Setup Register Function Default
Threshold
This is the magnitude at which a voltage deviation is considered
a transient.
125
EvPriority
The priority assigned to Sag/Swell and Transient module events
(0 to 255, 255 is highest).
200