CHK Power Quality MIRO PQ25 User Manual

CHK Power Quality Pty Ltd, User Manual – Miro Power Quality Logger and Analyser, 15 August 2016
Website: www.chkpowerquality.com.au; Enquiries: sales@chkpowerquality.com.au; Page 54
Address: Unit 1, 3 Tollis Place, Seven Hills, NSW 2147, Sydney, Australia; ABN: 53 169 840 831; Telephone: +61 2 8283 6945;
Fax: +61 2 8212 8105; Website: www.chkpowerquality.com.au
Figure 5.4.6.2
Figure 5.4.6.3
There are three capture modes for Mains Signalling and include: ‘Normal’; ‘High Speed’; and
‘Combine with total RMS’. Definitions are provided in figure 5.4.6.1.
The ’Normal’ capture mode uses the class A 10/12 cycle (200ms) measurement. The ‘High
Speed’ capture uses one cycle (20ms), increasing resolution and trading off accuracy. The
‘Combined with total RMS’ mode runs at normal speed but also captures total RMS.
5.4.7 IEC events
The ‘Dip’, ‘Swell’, ‘Interruption’ and ‘RVC’ are all grouped as ‘IEC Events’ as shown in figure
5.4.7.1. The detection ‘Threshold (%)’ and ‘Hysteresis (%)’ are user settable. The magnitude
in volts is based on the nominal voltage.
Figure 5.4.7.1
5.4.8 Capture triggers
The ‘Capture Triggers’ tab shown in figure 5.4.8.1 shows two trigger types, the ‘Sliding
Reference Trigger’ and ‘Transient Trigger’. The ‘Sliding Reference Trigger’ can be set to any
voltage or current input channel and whose settable parameters are percent fall and rise.
The ‘Transient Trigger’ triggers from a voltage gradient value scaled in V/ms. Note, the value
is approximate and limited by instrument bandwidth.
The ‘Log single point’ check box allows the dv/dt point at which the trigger occurs to be
logged.
Event triggers are inhibited for the first minute after power up, to give time to ensure all leads
are connected and for the sliding reference to settle.

CHK Power Quality MIRO PQ25 Specifications

General

Brand	CHK Power Quality
Model	MIRO PQ25
Category	Measuring Instruments
Language	English