CET PMC-690 User manual

PMC-690
Hand-Held Power Quality Analyzer
User Manual
Version: V1.0A
Aug 27, 2018

CET Electric Technology
2
This manual may not be reproduced in whole or in part by any means without the express written
permission from CET.
The information contained in this Manual is believed to be accurate at the time of publication;
however, CET assumes no responsibility for any errors which may appear here and reserves the
right to make changes without notice. Please consult CET or your local representative for latest
product specifications.
Standards Compliance
DANGER
This symbol indicates the presence of danger that may result in severe injury or death and
permanent equipment damage if proper precautions are not taken during the installation,
operation or maintenance of the device.
CAUTION
This symbol indicates the potential of personal injury or equipment damage if proper precautions
are not taken during the installation, operation or maintenance of the device.

CET Electric Technology
3
DANGER
Failure to observe the following instructions may result in severe injury or death
and/or equipment damage.

Installation, operation and maintenance of the meter should only be performed by
qualified, competent personnel that have the appropriate training and experience
with high voltage and current devices. The meter must be installed in accordance
with all local and national electrical codes.

Ensure that all incoming AC power and other power sources are turned OFF before
performing any work on the meter.

Before connecting the meter to the power source, check the label on top of the
meter to ensure that it is equipped with the appropriate power supply, and the
correct voltage and current input specifications for your application.

During normal operation of the meter, hazardous voltages are present on its
terminal strips and throughout the connected potential transformers (PT) and
current transformers (CT). PT and CT secondary circuits are capable of generating
lethal voltages and currents with their primary circuits energized. Follow
standard safety precautions while performing any installation or service work (i.e.
removing PT fuses, shorting CT secondaries, etc.).

Do not use the meter for primary protection functions where failure of the device
can cause fire, injury or death. The meter should only be used for shadow
protection if needed.

Under no circumstances should the meter be connected to a power source if it is
damaged.

To prevent potential fire or shock hazard, do not expose the meter to rain or
moisture.

Setup procedures must be performed only by qualified personnel familiar with the
instrument and its associated electrical equipment.
DO NOT open the instrument under any circumstances.

CET Electric Technology
4
Limited warranty

CET Electric Technology (CET) offers the customer a minimum of 12-month functional
warranty on the meter for faulty parts or workmanship from the date of dispatch
from the distributor. This warranty is on a return to factory for repair basis.

CET does not accept liability for any damage caused by meter malfunctions. CET
accepts no responsibility for the suitability of the meter to the application for which
it was purchased.

Failure to install, set up or operate the meter according to the instructions herein will
void the warranty.

Only CET’s duly authorized representative may open your meter. The unit should
only be opened in a fully anti-static environment. Failure to do so may damage the
electronic components and will void the warranty.

CET Electric Technology
5
Table of Contents
Table of Contents......................................................................................................................................5
Glossary .................................................................................................................................................... 8
Chapter 1 Introduction ............................................................................................................................. 9
1.1 Overview ....................................................................................................................................9
1.2 Features......................................................................................................................................9
1.3 Getting more information ........................................................................................................13
Chapter 2 Installation ............................................................................................................................. 14
2.1 Appearance ..............................................................................................................................14
2.2 Unit Dimensions .......................................................................................................................15
2.3 Wiring Connections ..................................................................................................................15
2.3.1 Single-Phase Connection.......................................................................................15
2.3.2 3-Phase 3-Wire Delta Connection .........................................................................16
2.3.3 3-Phase 4-Wire 2.5E-2PT Connection ...................................................................16
2.3.4 3-Phase 4-Wire Wye Connection ..........................................................................16
2.4 Ethernet Port (100BaseT) .........................................................................................................17
2.5 Chassis Ground Wiring .............................................................................................................17
Chapter 3 Front Panel Interface ............................................................................................................. 18
3.1 Using the Front Panel Buttons..................................................................................................18
3.2 Menu Tree ................................................................................................................................19
3.3 Front Panel User Interface........................................................................................................20
Chapter 4 Applications ........................................................................................................................... 27
4.1 Power, Energy and Demand .....................................................................................................27
4.1.1 Basic Measurements.....................................................................................................27
4.1.2 Energy Measurements ..................................................................................................27
4.1.3 Demands .......................................................................................................................27
4.2 Setpoints ..................................................................................................................................28
4.3 Power Quality Parameters........................................................................................................30
4.3.1 Power Frequency ..........................................................................................................30
4.3.2 Magnitude of the Supply Voltage .................................................................................30
4.3.3 Flicker ............................................................................................................................30
4.3.4 Supply Voltage Dips/Swells and Interruption................................................................31
4.3.5 Voltage Interruptions ....................................................................................................32
4.3.6 Voltage Transients .........................................................................................................33
4.3.7 Supply Voltage Unbalance ............................................................................................ 34
4.3.8 Harmonics and Interharmonics.....................................................................................34
4.3.9 Mains Signalling Voltage (MSV) ....................................................................................36
4.3.10 Voltage Deviation........................................................................................................36
4.3.11 Rapid Voltage Changes (RVC) ......................................................................................37
4.3.12 Inrush Current.............................................................................................................38
4.3.13 Flagging Concept.........................................................................................................39
4.3.14 EN50160 Compliance Report ......................................................................................40
4.3.15 ITIC/SEMI F47 Curve ...................................................................................................41

CET Electric Technology
6
4.3.16 RMS Change Detection ...............................................................................................42
4.4 Data Logging.............................................................................................................................42
4.4.1 Device Log and SOE Log ................................................................................................42
4.4.2 Statistical Data Recorder (SDR) .....................................................................................42
4.4.3 Max./Min. Log...............................................................................................................43
4.4.4 Pst Log ...........................................................................................................................43
4.4.5 Plt Log ...........................................................................................................................44
4.4.6 Waveform Recorder (WFR) ...........................................................................................44
4.4.7 Disturbance Waveform Recorder (DWR) ......................................................................44
4.4.8 RMS Log ........................................................................................................................45
4.4.9 Trend and SDR Trend.....................................................................................................46
4.4.10 PQDIF and COMTRADE Storage ..................................................................................46
4.4.11 PQ Counters ................................................................................................................47
4.5 Site Management and Monitoring ...........................................................................................47
4.6 Time Synchronization ...............................................................................................................48
4.6.1 SNTP..............................................................................................................................49
4.6.2 Modbus .........................................................................................................................49
4.7 Communication ........................................................................................................................49
4.7.1 Ethernet Port.................................................................................................................49
4.7.2 USB Port ........................................................................................................................49
4.8 Data Storage .............................................................................................................................49
Chapter 5 Modbus Register Map............................................................................................................51
5.1 Basic Measurements ................................................................................................................51
5.2 Energy Measurements .............................................................................................................53
5.3 PQ Measurements....................................................................................................................53
5.4 Harmonics & Interharmonic Measurements............................................................................54
5.4.1 Harmonic Distortion Measurements ............................................................................54
5.4.2 Harmonic Voltage & Current RMS ................................................................................55
5.4.3 Individual Total Harmonic .............................................................................................56
5.4.4 Harmonic Power ...........................................................................................................57
5.4.5 Harmonic Angles ...........................................................................................................57
5.4.6 Harmonic Energy...........................................................................................................58
5.4.7 Net/Total Harmonic Energy...........................................................................................58
5.4.8 Interharmonics Distortion (IHD) Measurements ..........................................................58
5.4.9 Interharmonic Voltage & Current RMS .........................................................................59
5.5 Demand ....................................................................................................................................60
5.5.1 Present Demand ...........................................................................................................60
5.5.2 Predicted Demand ........................................................................................................62
5.5.3 Present Max. .................................................................................................................62
5.5.4 Max. of Last Time..........................................................................................................63
5.6 Log Register ..............................................................................................................................63
5.6.1 Device Log Buffer ..........................................................................................................63
5.6.2 SOE Log Buffer...............................................................................................................64
5.6.3 SDR Log .........................................................................................................................64

CET Electric Technology
7
5.6.4 MM Log (Max./Min. Log) ..............................................................................................65
5.6.5 Pst/Plt Log .....................................................................................................................66
5.6.6 EN50160 Log ................................................................................................................. 66
5.7 Real-time WFR Register............................................................................................................71
5.8 Device Setup Parameters .........................................................................................................72
5.8.1 Communications Setup .................................................................................................72
5.8.2 Basic Setup Parameters.................................................................................................72
5.8.3 SMTP Setup...................................................................................................................73
5.8.4 PQ Setup .......................................................................................................................74
5.8.5 PQDIF Setup ..................................................................................................................75
5.8.6 Demand Setup .............................................................................................................. 76
5.8.7 WFR Setup.....................................................................................................................76
5.8.8 Standard Setpoints Setup..............................................................................................76
5.8.9 HS (High-speed) Setpoints Setup ..................................................................................77
5.8.10 SDR Setup....................................................................................................................78
5.8.11 Max./Min. Recorder (MMR) Setup .............................................................................81
5.8.12 EN50160 Setup ...........................................................................................................83
5.8.13 Trend Log Setup ..........................................................................................................84
5.8.14 System Setup...............................................................................................................84
5.9 Time Registers ..........................................................................................................................85
5.10 Information ............................................................................................................................86
5.10.1 Meter Information ......................................................................................................86
5.10.2 Device Tag Information ...............................................................................................87
5.10.3 Circuit Tag Information................................................................................................87
Appendix A - Data ID .............................................................................................................................. 88
SDR Data ID ....................................................................................................................................88
Demand Data ID .............................................................................................................................95
Appendix B - Event Classification............................................................................................................ 97
Device Event Classification .............................................................................................................97
SOE Log Classification.....................................................................................................................98
Appendix C - Technical Specifications...................................................................................................100
Appendix D - Accuracy Specifications................................................................................................... 101
Appendix E - Standards Compliance.....................................................................................................102
Contact us............................................................................................................................................. 103

CET Electric Technology
8
Glossary
DMD = Present Demand
DWR = Disturbance Waveform Recorder
FIFO = First In First Out
Fund. = Fundamental
GB = Giga Byte
GPS = Global Positioning System
HS = High-Speed
Hn = nth order Harmonic, integer multiple (n) of the Fundamental Frequency (50Hz or 60Hz)
IHn = nth order Interharmonic represents all components between the (n-1)th and nth harmonic orders in RMS
HDn = nth order Harmonic Distortion
IHDn = nth order Interharmonic Distortion
Hn = nth order Harmonic in RMS
IHn = nth order Interharmonic in RMS
LCD = Liquid Crystal Display
MB = Mega Byte
Pred_DMD = Predicted Demand
Plt = Long-term Flicker
Pst = Short-term Flicker
PQ = Power Quality
RTC = Real Time Clock
SDR = Statistical Data Recorder
SOE = Sequence of Events (PQ events)
SMTP = Simple Mail Transfer Protocol
TH = Total Harmonic in RMS, excluding Fundamental
THD = Total Harmonic Distortion
TOHD = Total Odd Harmonic Distortion
TEHD = Total Even Harmonic Distortion
U0 / I0 = Zero Sequence Voltage / Current
U1 / I1 = Positive Sequence Voltage / Current
U2 / I2 = Negative Sequence Voltage /Current
U0 / I0 Unb = Zero Sequence Voltage / Current Unbalance
U2 / I2 Unb = Negative Sequence Voltage / Current Unbalance
WF = Waveform
WFR = Waveform Recorder
Swell = Temporary increases in RMS value of AC voltage
Transient =Unidirectional impulse of either polarity or a damped oscillatory wave with the first peak occurring in
either polarity
Urms(1/2) = Half-Cycle RMS Voltage
Udin = Declared input voltage - Value obtained from the declared supply voltage by a transducer ratio
Usr = Sliding Reference Voltage
Ihalf cycle rms = Value of the RMS Current measured over each half period
INormal = Normal Full-load Current
Ull Normal = Normal line-to-line Voltage
Dip Threshold = Voltage magnitude specified for the purpose of detecting the start and end of a voltage dip
Flagged data = For any measurement time interval in which interruptions, dips or swells occur, the measurement results
of all other parameters made during this time interval are flagged

CET Electric Technology
9
Chapter 1 Introduction
This manual explains how to use the PMC-690 Advanced Power Quality Analyzer.
This chapter provides an overview of the PMC-690 Analyzer and summarizes many of its key features.
1.1 Overview
The PMC-690 Hand-Held Power Quality Analyzer is CET’s latest offer to assist engineers to diagnose the
PQ events at site as it provides advanced functionality by combining Class 0.1 accuracy and advanced
PQ features in a portable lightweight handheld form with a large, high-resolution, backlit, color TFT LCD
display. Compliance with the standards as IEC 62053-22 Class 0.5S, IEC 61000-4-30 Class A, IEC-61000-
4-15, IEC 61000-4-7 and IEC 61850. What’s more, it supports 4 channels each of voltage inputs and
current inputs, 512 samples/cycle waveform capture, and a large logging capacity of 16GB on-board
memory with data recording in COMTRADE and PQDIF file format which is downloadable via USB port
and compatible with PQ View software. With these features, the PMC-690 Power Quality Analyzer
becomes the most advanced and convenient diagnostic tool at site.
Typical Applications
PQ Check-up at HV, MV and LV Utility Substations
Site investigation & diagnosis for PQ problems
Industrial and Commercial
Electrical Testing and Recording
Fault investigation and identification
No Load and Full Load Test
Mains and Critical feeder Dips, Swells, Transients, Flicker & Disturbance Monitoring
Harmonics Monitoring
The above are just a few of many applications. Contact CET Technical Support if you require further
assistance with your applications.
1.2 Features
Basic Features
5.7’’ Backlit Color LCD Display @ 640x480
Light weight (1.16kg) - for easy transport
Simple configuration for quick measurement setup
Low power consumption with 8 hours battery
PQ InsightTM for capturing Waveforms for 3-phase Voltage and Current in “Scope Mode”
Communications - 100BaseT with RJ45 connector
Protocol - Modbus TCP, SNTP & IEC 61850
Industrial Grade Components
Standard Tropicalization
Extended Temperature Range
Extended Warranty
Weatherproof Carrying Case (Optional)

CET Electric Technology
10
Power Quality Features
IEC 61000-4-30 Class A
IEC 61000-4-7, IEC 61000-4-15
Transients, Dips, Swells, Interruptions, Rapid Voltage Changes (RVC) and In-rush Current monitoring
Harmonic analysis up to 63rd
Disturbance Waveform Recording (DWR)
Downloadable waveform records in COMTRADE format via SD Card
Trending and Statistical Reporting
Up to 1024 SOE Logs
PQ InsightTM for capturing Transient Waveforms for 3-phase Voltages and Currents in “Scope Mode”.
Front Panel Display
Real-time, Harmonic Power and Energy measurements
SOE Log and Waveform displays
Harmonic & Interharmonic histogram and Phasor diagrams
Statistical Trending
Device Log
Device configuration
Diagnostics
Metering
Basic Measurements (1-second update)
3-phase Voltage, Current, Power, PF and Phase Angles
kWh, kvarh Import/Export/Net/Total and kVAh Total
U4, I4, Frequency
High-speed Measurements (½ cycle update)
3-phase Voltages and Currents, U4, I4, Power, PF, Frequency
Demands
3-phase Voltage, Current, Power, PF, U4, I4, Frequency
Predicted Demands
Present Peak Demands, and Max. Demand of Last Time
Power Quality Metering
PQ Parameters as per IEC 61000-4-30
Power Frequency
Magnitude of the Supply Voltage
Flicker
Supply Voltage Dips and Swells
Voltage Interruptions
Transient Voltages
Supply Voltage Unbalance
Voltage Harmonics and Interharmonics
Rapid Voltage Changes
Measurement of Underdeviation and Overdeviation parameters