CHK Power Quality Pty Ltd, User Manual
–
Miro Power Quality Logger and Analyser, 15 August 2016
Website:
; Enquiries:
Page 181
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:
(THD)
-
Mains signalling (Ripple
amplitude)
Signal: <3kHz, user specified frequency. 20Hz bandwidth
(4-nearest-bins method, adjusted automatically to correct
for fundamental drift).
Measurement: 10/12 cycle rms amplitude maximum value.
Measurement range: 0%-15% of the nominal value.
Detection threshold: >0.3% of nominal voltage, Duration:
user defined from 1s to 300s. Trigger input to Ripple
capture.
-
RVC
RVC threshold: user defined between 1% and 6% of the
nominal value. RVC hysteresis: user defined and < RVC
threshold.
-
Underdeviation /
Overdeviation
Separately measure voltages above and below the
nominal value. Metrics: RMS-under, RMS-over, %U
Under
and %U
Over
.
-
Crest factor
Indicates peak-to-rms ratio of waveform. ±1%.
-
Temperature
Two temperature channels measured each second,
recording at adjustable, 10-min and 2-hour intervals.
Measurement:-50°C to +150°C. Accuracy: ±1°C.
High speed event recording
Triggers
User defined. Sliding reference, Dip/Swell, transient
(dv/dt), manual (via Online Monitor)
Event waveform capture
User defined. Pre-trigger: 100ms; Post trigger: 400ms;
Option for extended capture (eg. motor start). Duration:
2s.
Event RMS capture (half cycle RMS)
2.5s pre trigger, 25s post trigger (50Hz)
Ripple capture (10/12 cycle RMS)
Duration: 1s to 300s. Triggered by exceedance of
detection threshold (see above).
Communications
Wired data (standard)
USB 2.0.
Wireless (options)
Local and remote wireless options will be available and
integrated within the instrument.
Logging
Logged data memory
8GB.
Logging intervals
All IEC61000-4-30 intervals simultaneously plus
adjustable interval from 1s to 3600s.
Measurements
All measurements simultaneously.
GPS location
GPS location coordinates logged periodically.
General
Circuit connections
Three phase delta, three phase Wye, split phase* & single
phase.
Data file
PQA format binary with CSV export.
Data display
Real time measurements of basic parameters via LCD, all
parameters via Online Monitor.
Software tools
CITRUS.
Inputs
-
Voltage channels (AC/DC)
Isolated. 3 or 4 independent 2-wire inputs depending on
model and voltage lead options.
-
Voltage range (working
maximum per isolated input
pair)
Powered from phase A: 600VACrms (850Vpk)
Internal supply disabled: 700VACrms (1000Vpk)
-
Voltage surge protection
(differential)
4kV Fast transients, 6kV 1.2/50us impulse
–
no effect.
Recalibration may be required after impulses significantly
exceeding 6kV.
-
Current channels (AC/DC)
4. Hall effect clamp-on sensor required to measure DC.
-
Current range
Dependent upon current sensor.
-
Temperature channels
2 x PT100 RTD, M8 connectors.
-
Expansion Module Port
UART / SPI interface for future system upgrade. Allows for
