ION 7500 / ION 7600 User’s Guide

PQ (Power Quality) Setup

 

 

PQ (Power Quality) Setup

The PQ Setup screen contains the following settings for the detection voltage sags and swells (i.e. ITI (CBEMA) Type 2 and Type 3 disturbances). The ION module setup register corresponding to each Sag/Swell Setup value is included for advanced users. Refer to the online ION Programmer’s Reference for complete details about the Sag/Swell module.

Sag Limit

This item specifies the magnitude below which a power system input must fall for a sag to be recorded. This value must be expressed as a percentage of the nominal voltage (entered below in the NOMINAL VOLTAGE item). Setting the SAG LIMIT value changes the Sag Lim setup register in the factory-configured Sag/Swell module.

Swell Limit

This item specifies the magnitude above which a power system input must rise for a swell to be recorded. This value must be expressed as a percentage of the nominal voltage (entered below in the NOMINAL VOLTAGE item). Setting the SWELL LIMIT value changes the Swell Lim setup register in the factory-configured Sag/Swell module.

Change Criteria

You do not need to change this value for normal operation. This setting specifies the amount by which an input must change (either rise or fall) during a disturbance to be considered a new sub-disturbance. This value must be expressed as a percentage of the nominal voltage (entered below in the NOMINAL VOLTAGE item).

For example, if your Nominal Voltage is 120 V and your Change Criteria is 10%, any voltage change of 12 V or more during a disturbance will cause a new sub-disturbance to be recorded. Setting the CHANGE CRITERIA value changes the ChangeCrit setup register in the factory-configured Sag/Swell module.

Nominal Voltage

This item specifies the nominal voltage of the power system you are monitoring. By default, this value is set to 0 V. You should ensure that this item matches your power system’s nominal voltage (i.e. 120, 277, or 347). All Sag/Swell functions are disabled when the nominal voltage setting is 0 (zero). Setting the NOMINAL VOLTAGE value changes the Nom Volts setup register in the factory-configured Sag/ Swell module.

CAUTION

For the ION 7600 only, the value you enter will also be used by the Transient module and in all EN50160 compliance calculations. Therefore, all EN50160 and Transient functions are disabled when the NOMINAL VOLTAGE setting is 0 (zero). You should ensure that this item matches your power system’s nominal voltage (i.e. 120, 277, or 347).

Chapter 2 - Using The Front Panel

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Multi-Tech Systems 7500, 7600 manual PQ Power Quality Setup, Sag Limit, Swell Limit, Change Criteria, Nominal Voltage
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