CET PMC-660 Series User manual

PMC-660 Series
Advanced Power Quality Meter
User Manual
Version: V1.1A
August 14, 2018

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This manual may not be reproduced in whole or in part by any means without the express
written permission from CET Electric Technology (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.

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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.

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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.

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Table of Contents
Chapter 1 Introduction ............................................................................................................................. 8
1.1 Overview ....................................................................................................................................8
1.2 Features......................................................................................................................................8
1.3 PMC-660’s application in Power and Energy Management Systems .......................................11
1.4 Getting more information ........................................................................................................12
Chapter 2 Installation ............................................................................................................................. 13
2.1 Appearance ..............................................................................................................................13
2.2 Unit Dimensions .......................................................................................................................14
2.3 Terminal Dimensions ................................................................................................................14
2.4 Mounting..................................................................................................................................14
2.5 Wiring Connections ..................................................................................................................15
2.5.1 3-Phase 4-Wire Wye Direct Connection with 3CTs or 4CTs...........................................15
2.5.2 3-Phase 4-Wire Wye with 3PTs and 3CTs or 4CTs .........................................................16
2.5.3 3-Phase 3-Wire Grounded Wye ....................................................................................16
2.5.4 3-Phase 3-Wire Direct Delta Connection with 3CTs or 2CTs .........................................17
2.5.5 3-Phase 3-Wire Open Delta with 2PTs and 3CTs or 2CTs ..............................................17
2.6 Communications Wiring ...........................................................................................................18
2.6.1 RS485 Port.....................................................................................................................18
2.6.2 Ethernet Port (10/100BaseT) ........................................................................................18
2.7 Digital Input Wiring ..................................................................................................................19
2.8 GPS 1PPS Input wiring ..............................................................................................................19
2.9 Digital Output Wiring ...............................................................................................................19
2.10 Analog Input Wiring ...............................................................................................................19
2.11 Analog Output Wiring ............................................................................................................20
2.12 Power supply Wiring ..............................................................................................................20
2.13 Chassis Ground Wiring ...........................................................................................................20
Chapter 3 Front Panel.............................................................................................................................21
3.1 Display ......................................................................................................................................21
3.1.1 LCD Testing....................................................................................................................21
3.1.2 LCD Display Areas..........................................................................................................21
3.1.3 Peak Demand/Max./Min. Display .................................................................................23
3.2 Using the Front Panel Buttons..................................................................................................24
3.3 Data Display..............................................................................................................................24
3.4 Setup Configuration via the Front Panel ..................................................................................27
3.4.1 Making Setup Changes..................................................................................................27
3.4.2 Setup Menu ..................................................................................................................28
3.4.3 Front Panel Setup Parameters ......................................................................................29
Chapter 4 Applications ........................................................................................................................... 33
4.1 Inputs and Outputs ..................................................................................................................33
4.1.1 Digital Inputs .................................................................................................................33
4.1.2 Digital Outputs ..............................................................................................................34
4.1.3 Energy Pulse Outputs....................................................................................................34

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4.1.4 Analog Input..................................................................................................................34
4.1.5 Analog Output...............................................................................................................35
4.2 Power and Energy ....................................................................................................................35
4.2.1 Basic Measurements.....................................................................................................35
4.2.2 Energy Measurements ..................................................................................................36
4.2.3 Interval Energy Measurements (Firmware V2.00.00 or later) ......................................36
4.2.4 High-speed Measurements...........................................................................................36
4.2.5 Demand Measurements ...............................................................................................36
4.2.6 Max./Min. per Demand Period .....................................................................................37
4.3 Power Quality...........................................................................................................................37
4.3.1 Phase Angles .................................................................................................................37
4.3.2 Power Quality Parameters ............................................................................................38
4.3.3 Unbalance .....................................................................................................................39
4.3.4 Symmetrical Components.............................................................................................39
4.3.5 Deviation.......................................................................................................................39
4.3.6 Supply Voltage Dips/Swells and Interruptions ..............................................................39
4.3.7 Transients......................................................................................................................40
4.4 Setpoints ..................................................................................................................................40
4.5 Logical Module .........................................................................................................................42
4.6 Logging .....................................................................................................................................43
4.6.1 Max./Min. Log...............................................................................................................43
4.6.2 Peak Demand Log .........................................................................................................43
4.6.3 Interval Energy Recorder (IER) Log................................................................................44
4.6.4 Waveform Recorder (WFR) Log.....................................................................................44
4.6.5 PQ Log ...........................................................................................................................45
4.6.6 SOE Log .........................................................................................................................45
4.6.7 Data Recorder (DR) Log.................................................................................................45
4.7 Time of Use (TOU) ....................................................................................................................46
4.8 Time Synchronization ...............................................................................................................47
4.9 On-board Web Server...............................................................................................................48
4.10 Meter Email............................................................................................................................49
4.11 Ethernet Gateway...................................................................................................................49
Chapter 5 Modbus Register Map............................................................................................................51
5.1 Basic Measurements ................................................................................................................51
5.2 Energy Measurements .............................................................................................................53
5.2.1 Total Energy Measurements .........................................................................................53
5.2.2 TOU Energy Measurements ..........................................................................................53
5.2.3 Interval Energy Measurements .....................................................................................55
5.3 Pulse Counter ...........................................................................................................................55
5.4 Harmonic Measurements.........................................................................................................55
5.4.1 Fundamental (Displacement) Measurements ..............................................................55
5.4.2 Harmonic Measurements .............................................................................................56
5.5 High-speed Measurements ......................................................................................................57
5.6 Demand Measurements...........................................................................................................57

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5.6.1 Present Demand ...........................................................................................................57
5.6.2 Predicted Demand ........................................................................................................58
5.6.3 Max./Min. per Demand Period .....................................................................................59
5.6.4 Peak Demand Log of This Month (Since Last Reset) .....................................................60
5.6.5 Peak Demand Log of Last Month (Before Last Reset) ...................................................60
5.6.6 Demand Data Structure ................................................................................................60
5.7 Log Register ..............................................................................................................................60
5.7.1 Max./Min. Log...............................................................................................................60
5.7.2 SOE Log .........................................................................................................................63
5.8 Log Data Format .......................................................................................................................64
5.8.1 Read General Reference Packet Structure (Function Code 0x14) .................................64
5.8.2 Energy Log Data Structure ............................................................................................64
5.8.3 PQ Log Data Structure...................................................................................................65
5.8.4 Data Recorder Log Data Structure ................................................................................66
5.8.5 Waveform Recorder Log Data Structure .......................................................................66
5.9 Device Setup.............................................................................................................................67
5.9.1 Basic Setup....................................................................................................................67
5.9.2 Setpoint Setup ..............................................................................................................70
5.9.4 Data Recorder Setup .....................................................................................................73
5.9.5 Interval Energy Recorder Setup Registers .....................................................................74
5.9.6 Waveform Recorder (WFR) Setup .................................................................................75
5.9.7 TOU Setup .....................................................................................................................75
5.9.8 DO Control ....................................................................................................................79
5.9.9 Clear/Reset Control.......................................................................................................80
5.10 Time........................................................................................................................................81
5.11 Meter Information..................................................................................................................81
Appendix A - Data Recorder Parameter..................................................................................................83
Appendix B - Data Recorder Default Settings .........................................................................................86
Appendix C –SOE Event Classification.................................................................................................... 88
Appendix D - Technical Specifications .................................................................................................... 91
Appendix E - Standards Compliance....................................................................................................... 93
Appendix F –Ordering Guide ................................................................................................................. 94

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Chapter 1 Introduction
This manual explains how to use the PMC-660 Advanced Power Quality Meter. Throughout the manual
the term “meter” generally refers to all models.
This chapter provides an overview of the PMC-660 meter and summarizes many of its key features.
1.1 Overview
The PMC-660 is CET’s latest offer for the advanced Power Quality Monitoring of Incomers and Critical
Feeders for Utilities, Data Centers, High-Tech manufacturing facilities and Heavy Industries. Housed in
an industry-standard DIN form factor measuring 96mmx96mmx125mm, the PMC-660’s compact size is
perfectly suited for today’s space restricting installations. The PMC-660 features quality construction
with metal enclosure, advanced Power Quality and Revenue-Accurate measurements, high-resolution
Waveform Recording capabilities, comprehensive Data Logging with 4MB memory, extensive I/O and
an easy-to-read LCD display, capable of displaying 5 measurements at once. With standard dual RS-485
ports and optional 100BaseT Ethernet port as well as Modbus RTU and TCP protocols support, the PMC-
660 becomes a vital component of an intelligent Power Quality Monitoring System.
You can setup the meter through its Front Panel or via our free PMC Setup software. The meter is also
supported by our PecStar® iEMS Integrated Energy Management System. Following is a list of typical
applications for the PMC-660:
Class 0.2S Revenue Metering
Power Quality Monitoring of Main Incomer or Critical Feeder
Utility, Industrial and Commercial Metering
Substation, Building and Factory Automation
Low, Medium and High Voltage applications
Neutral (I4) or Residual/Leakage Current (via optional AI) Monitoring
Contact CET Technical Support should you require further assistance with your application.
1.2 Features
Ease of use
Large, backlit, easy to read LCD display with wide viewing angle
Password protected setup via Front Panel or free PMC Setup software
Easy installation with mounting slide bar, no tools required
Basic True RMS Measurements (1 second update)
3-Phase Voltage, Current and Power measurements
Neutral Current (I4) and Frequency
kWh/kvarh Import/Export/Net/Total, kVAh Total
kvarh Q1 - Q4
Voltage and Current Phase Angles (equivalent to Vector Diagram)
Interval Energy measurements for kWh Import/Export, kvarh Import/Export and kVAh with
programmable EN Period*
Device Operating Time (Running Hours)*
Calculated Residual Current (Ir)* with the I4 measurement option
*Available in Firmware V2.00.00 or later

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High-speed RMS Measurements
3-phase Voltage @ ½ cycle
3-phase Current and Neutral Current (I4) and I0 @ 1 cycle
3-phase Power and Power Factor @ 1 cycle
Power Quality
Waveform Recording at 256 samples per cycle
Fundamental measurements for 3-Phase Voltage, Current, Power, PF
Voltage and Current Unbalance
Voltage and Frequency Deviation
U and I Symmetrical Components*
THD, TOHD, TEHD, K-Factor and Displacement PF
Individual Harmonics up to 31st via Front Panel and 63rd via communications
Dip/Swell Detection and Transient Capture
PQ Log with 1000 entries
*Available in Firmware V2.00.00 or later
Sliding Window and Predicted Demands
Demands and Predicted Demands for 3-Phase Voltage, Current, Power and PF as well as I4,
Frequency, U and I Unbalance and THD
Peak Demands with Timestamp for This Month and Last Month (or Since and Before Last Reset)
Max./Min. values per demand interval
Demand synchronization with DI
Setpoints
16 Standard Setpoints with extensive list of monitoring parameters including Voltage, Current,
Power, Demands and THD, … etc.
8 High-Speed Setpoints for High-Speed measurements and DI
Configurable thresholds and time delays
6 Logical Modules supporting AND/OR/NAND/NOR operations
WF Recording, Data Recorder, DO, and Email Alarm trigger
Log memory
4MB on-board memory
Dynamic allocation for Data Recorder Logs, Waveform Recorder Logs and Interval Energy
Recorder Log
Multi-Tariff TOU Capability*
Two independent sets of TOU Schedules
oUp to 12 Seasons
o90 Holidays or Alternate Days
o20 Daily Profiles, each with 12 Periods with minimum 15-minute interval
o8 Tariffs, each providing kWh/kvarh Import/Export and kVAh
Switch between two TOU schedules according to programmable time with the switching event
stored in the SOE Log
Tariff switching based on DI status*
*Available in Firmware V2.00.00 or later

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Waveform Recorder Log
2 independent groups of Waveform Recorders with a combined total of 32 entries
Simultaneous capture of 3-Phase Voltage and Current signals
Programmable formats and pre-fault cycles from 256x20 to 16x320
Support FIFO Recording Mode
Interval Energy Recorder Log
Interval recording of kWh/kvarh Import/Export and kVAh Total
Support FIFO or Stop-When-Full Recording Mode
Data Recorder Log
12 Standard Data Recorder Logs and 4 High-Speed Data Recorder Logs
Recording interval from 1s to 40 days for standard and 1 to 60 cycles for High-Speed DR
Programmable sources include almost all real-time measurements, Harmonics, Unbalance and
Demand values
Configurable Depth and Recording Offset
Support FIFO or Stop-When-Full Recording Mode
SOE Log
512 events time-stamped to ±1ms resolution
Setup changes, Setpoint events and I/O operations
PQ Log
1000 entries time-stamped to ±1ms resolution
Dip/Swell and Transient detection or other PQ events
Max./Min. Log
Logging of Max./Min. values for measurements such as Voltage, Current, Frequency, kW, kvar,
kVA, PF, Unbalance, K-factor, THD and Ir with Timestamp for This Month and Last Month (or Since
and Before Last Reset)
Digital Inputs
6 channels, volts free dry contact, 24VDC internally wetted
1000Hz sampling for status monitoring with programmable debounce
Pulse counting with programmable weight for each channel for collecting WAGES (Water, Air, Gas,
Electricity, Steam) information
Demand Synchronization
Tariff switching based on DI status*
*Available in Firmware V2.00.00 or later
Digital Outputs
Up to 3 channels Form A Mechanical Relays for alarming and control
Analog Input (Optional)
0/4-20mA DC input with programmable zero and full scales
Can be used to measure external transducer signal such as Residual or Leakage Current