GE Power Quality Meter Series User manual

PQM
Power Quality Meter™
INSTRUCTION MANUAL
Software Revision: 3.5x
Manual P/N: 1665-0003-CG
Manual Order Code: GEK-106296A
Copyright © 2001 GE Power Management
GE Power Management
215 Anderson Avenue, Markham, Ontario
Canada L6E 1B3
Tel: [phone] Fax: [phone]
Internet: http://www.GEindustrial.com/pm Manufactured under an
ISO9001 Registered system.
g
GE Power Management
823787A3.CDR
STATUS COMMUNICATE RELAYS
VALUE
MESSAGE
ACTUAL
SETPOINT RESET
STORE
SIMULATION
ALARM
SELF TEST
PROGRAM
TX2
TX1
RX2
RX1
AUX2
ALARM
AUX3
AUX1
PQM Power Quality Meter
g

These instructions do not purport to cover all details or variations in equipment nor provide for every possibl
e
contingency to be met in connection with installation, operation, or maintenance. Should further information b
e
desired or should particular problems arise which are not covered sufficiently for the purchaser’s purpose, th
e
matter should be referred to the General Electric Company.
To the extent required the products described herein meet applicable ANSI, IEEE, and NEMA standards; bu
t
no such assurance is given with respect to local codes and ordinances because they vary greatly.

GE Power Management PQM Power Quality Meter
i
TABLE OF CONTENTS
1. OVERVIEW 1.1 INTRODUCTION
1.1.1 DESCRIPTION .......................................................................................... 1-1
1.1.2 FEATURE HIGHLIGHTS........................................................................... 1-1
1.1.3 APPLICATIONS......................................................................................... 1-3
1.2 STANDARD FEATURES
1.2.1 METERING................................................................................................ 1-4
1.2.2 FUTURE EXPANSION .............................................................................. 1-4
1.2.3 OPTIONAL FEATURES............................................................................. 1-5
1.2.4 PQMPC SOFTWARE ................................................................................ 1-9
1.2.5 ORDER CODES...................................................................................... 1-10
1.3 SPECIFICATIONS
1.3.1 PQM SPECIFICATIONS.......................................................................... 1-11
2. INSTALLATION 2.1 PHYSICAL
2.1.1 MOUNTING ............................................................................................... 2-1
2.1.2 PRODUCT IDENTIFICATION.................................................................... 2-2
2.1.3 REVISION HISTORY................................................................................. 2-3
2.2 ELECTRICAL
2.2.1 EXTERNAL CONNECTIONS .................................................................... 2-4
2.2.2 CONTROL POWER................................................................................. 2-13
2.2.3 VT INPUTS .............................................................................................. 2-13
2.2.4 CT INPUTS.............................................................................................. 2-13
2.2.5 OUTPUT RELAYS................................................................................... 2-14
2.2.6 SWITCH INPUTS (OPTIONAL)............................................................... 2-15
2.2.7 ANALOG OUTPUTS (OPTIONAL) .......................................................... 2-17
2.2.8 ANALOG INPUT (OPTIONAL)................................................................. 2-17
2.2.9 RS485 SERIAL PORTS........................................................................... 2-18
2.2.10 RS232 FRONT PANEL PORT................................................................. 2-20
2.2.11 DIELECTRIC STRENGTH TESTING ......................................................2-21
3. OPERATION 3.1 FRONT PANEL & DISPLAY
3.1.1 FRONT PANEL.......................................................................................... 3-1
3.1.2 DISPLAY.................................................................................................... 3-1
3.2 STATUS INDICATORS
3.2.1 DESCRIPTION .......................................................................................... 3-2
3.2.2 STATUS..................................................................................................... 3-2
3.2.3 COMMUNICATE........................................................................................ 3-2
3.2.4 RELAYS..................................................................................................... 3-3
3.3 KEYPAD
3.3.1 DESCRIPTION .......................................................................................... 3-4
3.3.2 SETPOINT KEY......................................................................................... 3-4
3.3.3 ACTUAL KEY............................................................................................. 3-4
3.3.4 STORE KEY .............................................................................................. 3-4
3.3.5 RESET KEY............................................................................................... 3-5
3.3.6 MESSAGE KEYS....................................................................................... 3-6
3.3.7 VALUE KEYS............................................................................................. 3-6
3.3.8 DATA ENTRY METHODS......................................................................... 3-7
3.3.9 SETPOINT ACCESS SECURITY.............................................................. 3-7

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PQM Power Quality Meter GE Power Management
TABLE OF CONTENTS
3.4 DEFAULT MESSAGES
3.4.1 DESCRIPTION .......................................................................................... 3-8
3.4.2 ADDING A DEFAULT MESSAGE ............................................................. 3-8
3.4.3 DELETING A DEFAULT MESSAGE ......................................................... 3-8
4. PROGRAMMING 4.1 INTRODUCTION
4.1.1 SETPOINT ENTRY METHODS................................................................. 4-1
4.2 S1 PQM SETUP
4.2.1 DESCRIPTION .......................................................................................... 4-3
4.2.2 PREFERENCES........................................................................................ 4-3
4.2.3 SETPOINT ACCESS .................................................................................4-4
4.2.4 RS485/RS232 SERIAL PORTS................................................................. 4-6
4.2.5 DNP 3.0 CONFIGURATION ...................................................................... 4-7
4.2.6 CLOCK....................................................................................................... 4-8
4.2.7 CALCULATION PARAMETERS................................................................ 4-9
4.2.8 CLEAR DATA .......................................................................................... 4-11
4.2.9 EVENT RECORDER ............................................................................... 4-13
4.2.10 TRACE MEMORY.................................................................................... 4-14
4.2.11 PROGRAMMABLE MESSAGE ............................................................... 4-17
4.2.12 PRODUCT OPTIONS.............................................................................. 4-18
4.3 S2 SYSTEM SETUP
4.3.1 CURRENT/VOLTAGE CONFIGURATION .............................................. 4-19
4.3.2 ANALOG OUTPUTS................................................................................ 4-21
4.3.3 ANALOG INPUT ...................................................................................... 4-25
4.3.4 SWITCH INPUTS..................................................................................... 4-27
4.3.5 PULSE OUTPUT ..................................................................................... 4-29
4.3.6 PULSE INPUT ......................................................................................... 4-31
4.3.7 DATA LOGGER....................................................................................... 4-33
4.4 S3 OUTPUT RELAYS
4.4.1 DESCRIPTION ........................................................................................ 4-34
4.4.2 ALARM RELAY........................................................................................ 4-35
4.4.3 AUXILIARY RELAYS............................................................................... 4-35
4.5 S4 ALARMS/CONTROL
4.5.1 CURRENT/VOLTAGE ALARMS.............................................................. 4-36
4.5.2 TOTAL HARMONIC DISTORTION..........................................................4-41
4.5.3 FREQUENCY .......................................................................................... 4-42
4.5.4 POWER ALARMS.................................................................................... 4-43
4.5.5 POWER FACTOR.................................................................................... 4-45
4.5.6 DEMAND ALARMS.................................................................................. 4-48
4.5.7 PULSE INPUT ......................................................................................... 4-50
4.5.8 TIME ........................................................................................................4-52
4.5.9 MISCELLANEOUS ALARMS................................................................... 4-53
4.6 S5 TESTING
4.6.1 TEST OUTPUT RELAYS & LEDS...........................................................4-54
4.6.2 CURRENT/VOLTAGE SIMULATION ...................................................... 4-55
4.6.3 ANALOG OUTPUTS SIMULATION......................................................... 4-56
4.6.4 ANALOG INPUT SIMULATION ............................................................... 4-57
4.6.5 SWITCH INPUTS SIMULATION..............................................................4-58
4.6.6 FACTORY USE ONLY............................................................................. 4-58

GE Power Management PQM Power Quality Meter
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TABLE OF CONTENTS
5. MONITORING 5.1 ACTUAL VALUES VIEWING
5.1.1 DESCRIPTION .......................................................................................... 5-1
5.2 A1 METERING
5.2.1 CURRENT ................................................................................................. 5-2
5.2.2 VOLTAGE.................................................................................................. 5-4
5.2.3 PHASORS ................................................................................................. 5-6
5.2.4 POWER ..................................................................................................... 5-7
5.2.5 ENERGY.................................................................................................. 5-12
5.2.6 DEMAND ................................................................................................. 5-14
5.2.7 FREQUENCY .......................................................................................... 5-16
5.2.8 PULSE COUNTER .................................................................................. 5-17
5.2.9 ANALOG INPUT...................................................................................... 5-19
5.3 A2 STATUS
5.3.1 ALARMS.................................................................................................. 5-20
5.3.2 SWITCH STATUS.................................................................................... 5-22
5.3.3 CLOCK..................................................................................................... 5-23
5.3.4 PROGRAMMABLE MESSAGE ............................................................... 5-23
5.4 A3 POWER ANALYSIS
5.4.1 POWER QUALITY................................................................................... 5-24
5.4.2 TOTAL HARMONIC DISTORTION.......................................................... 5-25
5.4.3 DATA LOGGER....................................................................................... 5-26
5.4.4 EVENT RECORDER ............................................................................... 5-27
5.5 A4 PRODUCT INFO
5.5.1 SOFTWARE VERSIONS & MODEL INFORMATION.............................. 5-31
6. SOFTWARE 6.1 INTRODUCTION
6.1.1 OVERVIEW................................................................................................ 6-1
6.1.2 HARDWARE CONFIGURATION............................................................... 6-1
6.2 PQMPC INSTALLATION
6.2.1 CHECKING IF INSTALLATION/UPGRADE IS REQUIRED...................... 6-3
6.2.2 INSTALLING/UPGRADING PQMPC......................................................... 6-4
6.2.3 CONFIGURING PQMPC COMMUNICATIONS......................................... 6-5
6.3 PQMPC MENUS
6.3.1 DESCRIPTION .......................................................................................... 6-6
6.4 UPGRADING FIRMWARE
6.4.1 DESCRIPTION .......................................................................................... 6-7
6.4.2 SAVE/PRINT PQM SETPOINTS TO A FILE............................................. 6-7
6.4.3 LOADING NEW FIRMWARE INTO THE PQM.......................................... 6-8
6.4.4 LOADING SAVED SETPOINTS INTO THE PQM................................... 6-10
6.5 USING PQMPC
6.5.1 ENTERING SETPOINTS......................................................................... 6-11
6.5.2 VIEWING ACTUAL VALUES................................................................... 6-12
6.5.3 SETPOINT FILES.................................................................................... 6-12
6.5.4 GETTING HELP....................................................................................... 6-12
6.6 POWER ANALYSIS
6.6.1 WAVEFORM CAPTURE.......................................................................... 6-13
6.6.2 HARMONIC ANALYSIS........................................................................... 6-13
6.6.3 TRACE MEMORY.................................................................................... 6-16
6.6.4 DATA LOGGER....................................................................................... 6-18

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PQM Power Quality Meter GE Power Management
TABLE OF CONTENTS
7. MODBUS
COMMUNICATIONS 7.1 OVERVIEW
7.1.1 MODBUS PROTOCOL.............................................................................. 7-1
7.1.2 ELECTRICAL INTERFACE ....................................................................... 7-1
7.1.3 DATA FORMAT & DATA RATE................................................................. 7-1
7.1.4 DATA PACKET FORMAT..........................................................................7-2
7.1.5 ERROR CHECKING.................................................................................. 7-2
7.1.6 CRC-16 ALGORITHM................................................................................ 7-3
7.1.7 TIMING ......................................................................................................7-3
7.2 MODBUS FUNCTIONS
7.2.1 PQM SUPPORTED MODBUS FUNCTIONS............................................. 7-4
7.2.2 FUNCTION CODES 03/04 – READ SETPOINTS/ACTUAL VALUES....... 7-4
7.2.3 FUNCTION CODE 05 - EXECUTE OPERATION......................................7-5
7.2.4 FUNCTION CODE 05 – BROADCAST COMMAND..................................7-6
7.2.5 FUNCTION CODE 06 – STORE SINGLE SETPOINT .............................. 7-7
7.2.6 FUNCTION CODE 07 – READ DEVICE STATUS ....................................7-8
7.2.7 FUNCTION CODE 08 – LOOPBACK TEST..............................................7-9
7.2.8 FUNCTION CODE 16 – STORE MULTIPLE SETPOINTS...................... 7-10
7.2.9 FUNCTION CODE 16 - PERFORMING COMMANDS............................7-11
7.2.10 FUNCTION CODE 16 - BROADCAST COMMAND ................................7-12
7.2.11 ERROR RESPONSES............................................................................. 7-13
7.3 MODBUS MEMORY MAP
7.3.1 MEMORY MAP INFORMATION..............................................................7-14
7.3.2 USER-DEFINABLE MEMORY MAP........................................................ 7-14
7.3.3 PQM MEMORY MAP...............................................................................7-15
7.3.4 MEMORY MAP DATA FORMATS...........................................................7-55
7.3.5 ANALOG OUTPUT PARAMETER RANGE ............................................. 7-63
8. DNP COMMUNICATIONS 8.1 DNP 3.0 PROTOCOL
8.1.1 DEVICE PROFILE DOCUMENT ............................................................... 8-1
8.1.2 IMPLEMENTATION TABLE....................................................................... 8-3
8.1.3 DEFAULT VARIATIONS............................................................................ 8-4
8.1.4 INTERNAL INDICATION BITS .................................................................. 8-4
8.1.5 BINARY INPUT / BINARY INPUT CHANGE POINT LIST......................... 8-5
8.1.6 BINARY OUTPUT / CONTROL RELAY OUTPUT POINT LIST................ 8-7
8.1.7 POINT LIST FOR ANALOG INPUT/OUTPUT CHANGE........................... 8-9
8.1.8 POINT LIST FOR COUNTERS................................................................8-14
9. COMMISSIONING 9.1 COMMISSIONING
A. APPLICATION NOTES A.1 PQM APPLICATION NOTES
A.1.1 EVENT RECORDER .................................................................................A-1
A.1.2 INTERFACING USING HYPERTERMINAL...............................................A-4
A.1.3 PHASORS IMPLEMENTATION ................................................................A-7
A.1.4 TRIGGERED TRACE MEMORY RESOLUTION.......................................A-9
A.1.5 PULSE OUTPUT APPLICATION.............................................................A-11
A.1.6 DATA LOGGER IMPLEMENTATION......................................................A-12
A.1.7 READING LONG INTEGERS FROM MEMORY MAP ............................A-16
A.1.8 PULSE INPUT APPLICATION.................................................................A-18
A.1.9 PULSE TOTALIZER APPLICATION........................................................A-19

GE Power Management PQM Power Quality Meter
v
TABLE OF CONTENTS
B. TABLES AND FIGURES B.1 TABLES AND FIGURES
B.1.1 LIST OF TABLES.......................................................................................B-1
B.1.2 LIST OF FIGURES ....................................................................................B-1
C. WARRANTY C.1 PQM WARRANTY

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PQM Power Quality Meter GE Power Management
TABLE OF CONTENTS

GE Power Management PQM Power Quality Meter 1-1
1 OVERVIEW 1.1 INTRODUCTION
1
1 OVERVIEW 1.1 INTRODUCTION 1.1.1 DESCRIPTION
The GE Power Management PQM Power Quality Meter is an ideal choice for continuous monitoring of a single
or three-phase system. It provides metering for current, voltage, real power, reactive power, apparent power,
energy use, cost of power, power factor, and frequency. Programmable setpoints and four assignable output
relays allow control functions to be added for specific applications. This includes basic alarm on over/under
current or voltage, unbalance, demand based load shedding, and capacitor power factor correction control.
More complex control is possible using the four switch inputs; these can also be used for status information
such as breaker open/closed, flow information, etc.
As a data gathering device for plant automation systems that integrate process, instrument, and electrical
requirements, all monitored values are available via one of two RS485 communication ports running the Mod-
bus protocol. If analog values are required for direct interface to a PLC, any of the monitored values can output
as a 4 to 20 mA (or 0 to 1 mA) signal to replace up to 4 separate transducers. A third RS232 communication
port connects to a PC from the front panel for simultaneous access of information by other plant personnel.
With increasing use of electronic loads such as computers, ballasts, and variable frequency drives, the quality
of the power system is important. With the harmonic analysis option, any phase current or voltage can be dis-
played and the harmonic content calculated. Knowledge of the harmonic distribution allows action to be taken
to prevent overheated transformers, motors, capacitors, neutral wires, and nuisance breaker trips. Redistribu-
tion of system loading can also be determined. The PQM can also provide waveform and data printouts to
assist in problem diagnosis.
Economical system monitoring or control is possible by selecting the non-display chassis model as a system
component and adding required options to obtain the desired level of functionality.
1.1.2 FEATURE HIGHLIGHTS
• Monitor: A, V, VA, W, var, kWh, kvarh, kVAh, PF, Hz
• Demand metering: W, var, A, VA
• Setpoints for alarm or control from most measured values, including: unbalance, frequency, power factor,
voltage, and current
• 4 output relays / 4 switch inputs for flexible control configuration
• 4 isolated analog outputs replace transducers for PLC interface
• 1 4-20 mA analog input
• Modbus communications
• Three COM ports (two rear RS485 ports and one front RS232 port) for access by process, electrical, main-
tenance, and instrument personnel
• Harmonic analysis for power quality review and problem correction
• 40-character display and keypad for local programming
• Free PQMPC software for setpoint entry or monitoring from a PC
• Simulation mode for testing and training
• Compact design for panel or chassis mount
• AC/DC control power

1-2 PQM Power Quality Meter GE Power Management
1.1 INTRODUCTION 1 OVERVIEW
1
Figure 1–1: PQM FEATURE HIGLIGHTS
823756AK.CDR
STATUS COMMUNICATE RELAYS
VALUE
MESSAGE
ACTUAL
SETPOINT RESET
STORE
SIMULATION
ALARM
SELF TEST
PROGRAM
TX2
TX1
RX2
RX1
AUX2
ALARM
AUX3
AUX1
STATUS: COMMUNICATE: RELAYS:
- Alarm condition present
- Setpoint programming is
enabled
- Simulated values being
used for test/training
- internal fault detected,
service required
ALARM
PROGRAM
SIMULATION
SELF TEST
For monitoring communication activity:
COM1 transmit data
COM1 receive data
COM2 transmit data
COM2 receive data
TX1
RX1
TX2
RX2
ALARM
AUX1
AUX2
AUX3
Auxiliary relay activated by
programmable function.
Alarm condition present.
See display for cause.
}
DISPLAY
40 character illuminated display for
programming, monitoring, status, fault
diagnosis, user programmable messages
and setpoints. Programmable auto scan
sequence for unattended operation.
SETPOINT KEY:
COMPUTER INTERFACE:
Program all setpoints. Tamperproof
settings with passcode and access jumper
prevent unauthorized setpoint changes.
RS232 comm port for connecting to a PC.
Use for downloading setpoints, monitoring,
data collection, printing reports.
KEYPAD:
DOOR:
Rubber keypad is dust tight and
splash proof.
Door covers keys and computer port
when not in use.
PQM Power Quality Meter
g
823755AL.CDR
FUSE ACCESS
ANALOG INPUT
Control power fuse accessible under sliding
door.
Accept 4-20mA analog inputs for transducer
interface.
VT INPUTS:
0-600V, 3 wire or 4 wire voltage inputs.
Direct (up to 600V) or VT (>600V for
isolation) connections.
CT INPUTS:
GROUND:
3 isolated phase CT inputs
1 isolated neutral CT input
1 Amp or 5 Amp secondary
Separate safety and filter ground
All inputs meet C37.90 and IEC 801-2
EMI, SWC, RFI interference immunity.
AC/DC CONTROL POWER
Universal control power
90-300 VDC
70-265 VAC
COMPACT DESIGN
Panel mount replaces many discrete
components with one standard model.
PROGRAM UPDATING
Flash memory storage of firmware for field
updating via communications port. Enables
product updating on-site for latest features.
COMMUNICATIONS
Dual RS485 comm ports Modbus protocol.
Continuous monitoring/control via
SCADA system rear (RS485).
Front (RS232) or rear (RS485) access
allows simultaneous communication
via a PC or for redundant comms.
®
COM1
COM2/3
ANALOG OUTPUTS
4 isolated 0-1mA or 4-20 mA outputs replace
8 transducers. Programmable including:
A, V, W, var, VA, Wh varh, PF, Hz
SWITCH INPUTS
A
B
C
D
Programmable for relay activation,
counters, logic, demand synchronization,
setpoint access, alarm position
4 OUTPUT RELAYS
ALARM
AUX1
AUX2
AUX3
Programmable alarm conditions
actuated by programmable
setpoints, switch inputs, remote
communication control.
}
}

GE Power Management PQM Power Quality Meter 1-3
1 OVERVIEW 1.1 INTRODUCTION
1
1.1.3 APPLICATIONS
• Metering of distribution feeders, transformers, generators, capacitor banks, and motors
• Medium and low voltage three-phase systems
• Commercial, industrial, utility
• Flexible control for demand load shedding, power factor, etc.
• Power quality analysis
• System debugging
Figure 1–2: SINGLE LINE DIAGRAM
823768A2.CDR
4
OUTPUT
RELAYS
4
TRANSDUCER
OUTPUTS
4
3
2
1
COM 2
RS232
PORT
COM 1
4 SWITCH
INPUTS FOR
CONTROL
-
4-20mA
ALARM
CONTROL
INSTRUMENTATION
ELECTRICAL
MAINTENANCE
MAIN
SCADA
3 PHASE
3/4 WIRE BUS
CTs VTs
0-600V DIRECT
>600V CT/VTs
AC/DC
CONTROL
POWER
PLC
or
RTU
PQM RELAY

1-4 PQM Power Quality Meter GE Power Management
1.2 STANDARD FEATURES 1 OVERVIEW
11.2 STANDARD FEATURES 1.2.1 METERING
True RMS monitoring of
I
a
, I
b
, I
c
, I
n
, V
an
, V
bn
, V
cn
, V
ab
, V
bc
, V
ca
, voltage/current unbalance, power factor, line
frequency, watts, vars, VA, Wh, varh, VAh, and demand readings for A, W, vars, and VA. Maximum and mini-
mum values of measured quantities are recorded and are date and time stamped.
A 40-character display with brightness control is used for programming setpoints and monitoring values and
status.
a) ALARMS
Alarm conditions can be set up for all measured quantities. These include overcurrent, undercurrent, neutral
current, current unbalance, voltage unbalance, phase reversal, overfrequency, underfrequency, power factor,
switch inputs, etc. The alarm messages are displayed in a simple and easy to understand English format.
b) COMMUNICATION
The PQM is equipped with one standard RS485 port utilizing the Modbus or DNP 3.0 protocols. This can be
used to integrate process, instrumentation, and electrical requirements in a plant automation system by con-
necting PQM meters together to a DCS or SCADA system. A PC running PQMPC can change system set-
points and monitor values, status, and alarms. Continuous monitoring minimizes process downtime by
immediately identifying potential problems due to faults or changes from growth.
The PQM also includes a front RS232 port which may be employed to perform such tasks as:
• data monitoring
• problem diagnosis
• viewing event records
• trending
• printing settings and/or actual values
• loading new firmware into the PQM
1.2.2 FUTURE EXPANSION
Flash memory is used to store firmware within the PQM. This allows future product upgrades to be loaded via
the serial port.
Figure 1–3: DOWNLOADING PRODUCT ENHANCEMENTS VIA THE SERIAL PORT
PQM units can initially be used as standalone meters. Their open architecture allows connection to other Mod-
bus compatible devices on the same communication link. These can be integrated in a complete plant-wide
system for overall process monitoring and control.
SIMULATION
ALARM
STATUS
SELF TEST
PROGRAM
TX2
TX1
COMMUNICATE
RX2
RX1
AUX2
ALARM
RELAYS
AUX3
AUX1
823774A5.CDR
Transfer new firmware
to the PQM
Product update
from GE Power
Management
CD-ROM
PQM Windows Application - PQM
For Help, press F1
Seconds (Elapsed Time)
SIMULATION
ALARM
STATUS
SELF TEST
PROGRAM
TX2
TX1
COMMUNICATE
RX2
RX1
AUX2
ALARM
RELAYS
AUX3
AUX1
PQM Power Quality Meter

GE Power Management PQM Power Quality Meter 1-5
1 OVERVIEW 1.2 STANDARD FEATURES
1
1.2.3 OPTIONAL FEATURES
a) TRANSDUCER OPTION
Four isolated 4 to 20 mA (or 0 to 1 mA depending on the installed option) analog outputs are provided that can
replace up to eight transducers. The outputs can be assigned to any measured parameters for direct interface
to a PLC.
One 4 to 20 mA analog input is provided to accept a transducer output for displaying information such as tem-
perature or water level.
An additional rear RS485 communication port is provided for simultaneous monitoring by process, instrument,
electrical, or maintenance personnel.
Figure 1–4: ADDITIONAL COMMUNICATION PORT
STATUS COMMUNICATE RELAYS
VALUE
MESSAGE
ACTUAL
SETPOINT RESET
STORE
SIMULATION
ALARM
SELF TEST
PROGRAM
TX2
TX1
RX2
RX1
AUX2
ALARM
AUX3
AUX1
823779A7.CDR
•Data monitoring
•Problem diagnosis
•Event records
•Trending
•Report printing
Main plant
control/monitoring
communication
interface
RS485 RS485
RS232
Print reports
Use 2nd/3rd comm ports for simultaneous
access by electrical, maintenance,
process, instrumentation personnel
for
PQMWindows Application - PQM
File Setpoint Actual Communication Help
ForHelp, press F1
Actual- Chart Recorder
OK
Cancel
Seconds(Elapsed Time)
TrendingChart
RUN
PRINT
PQM Power Quality Meter

1-6 PQM Power Quality Meter GE Power Management
1.2 STANDARD FEATURES 1 OVERVIEW
1b) CONTROL OPTION
An additional three dry-contact form “C” output relays and four dry-contact switch inputs are provided. These
additional relays can be combined with setpoints and inputs/outputs for control applications. Possibilities
include:
• undercurrent alarm warnings for pump protection
• over/undervoltage for generators
• unbalance alarm warnings to protect rotating machines
• dual level power factor for capacitor bank switching
• underfrequency/demand output for load shedding resulting in power cost savings
• kWh, kvarh and kVAh pulse output for PLC interface
• Pulse input for totalizing quantities such as kWh, kvarh, kVAh, etc.
Figure 1–5: SWITCH INPUTS AND OUTPUTS RELAYS
DCS
RS485
MODBUS
4
RELAYS
ALARM
AUX 1
AUX 2
AUX 3
4
SWITCH
INPUTS
823775A6.DWG
PQM
STATUS COMMUNICATE RELAYS
SIMULATION
ALARM
SELF TEST
PROGRAM
TX2
TX1
RX2
RX1
AUX2
ALARM
AUX3
AUX1
PQM Power Quality Meter

GE Power Management PQM Power Quality Meter 1-7
1 OVERVIEW 1.2 STANDARD FEATURES
1
c) POWER ANALYSIS OPTION
Non-linear loads (such as variable speed drives, computers, and electronic ballasts) can cause unwanted har-
monics that may lead to nuisance breaker tripping, telephone interference, and transformer, capacitor or motor
overheating. For fault diagnostics such as detecting undersized neutral wiring, assessing the need for har-
monic rated transformers, or judging the effectiveness of harmonic filters, details of the harmonic spectrum are
useful and available with the power analysis option.
Figure 1–6: HARMONIC SPECTRUM
Voltage and current waveforms can be captured and displayed on a PC with PQMPC or third party software.
Distorted peaks or notches from SCR switching provide clues for taking corrective action.
Figure 1–7: CAPTURED WAVEFORM

1-8 PQM Power Quality Meter GE Power Management
1.2 STANDARD FEATURES 1 OVERVIEW
1Alarms, setpoint triggers, and input and output events can be stored in a 40-event record and time/date
stamped by the internal clock. This is useful for diagnosing problems and system activity. The event record is
available through serial communication. Minimum and maximum values are also continuously updated and
time/date stamped.
Routine event logs of all measured quantities can be created, saved to a file, and/or printed.
Figure 1–8: DATA LOGGER
The power analysis option also provides a Trace Memory feature. This feature can be used to record specified
parameters based on the user defined triggers.
Figure 1–9: TRACE MEMORY TRIGGERS

GE Power Management PQM Power Quality Meter 1-9
1 OVERVIEW 1.2 STANDARD FEATURES
1
Figure 1–10: TRACE MEMORY CAPTURE
1.2.4 PQMPC SOFTWARE
All data continuously gathered by the PQM can be transferred to a third party software program for display,
control, or analysis through the communications interface. The PQMPC software makes this data immediately
useful and assists in programming the PQM. Some of the tasks that can be executed using the PQMPC soft-
ware package are:
• read metered data
• monitor system status
• change PQM setpoints on-line
• save setpoints to a file and download into any PQM
• capture and display voltage and current wave shapes for analysis
• record demand profiles for various measured quantities
• troubleshoot communication problems with a built in communications debugging tool
• print all graphs, charts, setpoints, and actual data
The PQMPC software is fully described in Chapter 6: SOFTWARE.

1-10 PQM Power Quality Meter GE Power Management
1.2 STANDARD FEATURES 1 OVERVIEW
11.2.5 ORDER CODES
The order code for all options is: PQM-T20-C-A
Modifications (consult the factory for any additional modification costs):
• MOD 500: Portable test/carrying case
• MOD 501: 20 to 60 V DC / 20 to 48 V AC control power
• MOD 502: Tropicalization
• MOD 504: Removable terminal blocks
• MOD 505: PQM Remote: Base Unit with Detachable Faceplate
• MOD 506: 4 Step Capacitor Bank Switching
• MOD 507: –40°C to +60°C Extended Temperature Operation
• MOD 508: 269/565 Communication Protocol
• MOD 513: Class 1, Division 2 Operation
• MOD 516: PQM Remote: Base Unit only
• MOD 517: PQM Remote: Detachable Faceplate only
Accessories (consult the factory for any additional accessory costs):
• PQMPC Windows software (free upon request)
• RS232 to RS485 converter (required to connect a PC to the PQM RS485 ports)
• 2.25” collar for limited depth mounting
• RS485 terminating network
• PQM mounting plate to replace MTM Plus
Control Power:
• 90 to 300 V DC / 70 to 265 V AC standard
• 20 to 60 V DC / 20 to 48 V AC (MOD 501)
Table 1–1: ORDER CODES
PQM S S S
Basic Unit PQM |
|| || |Basic Unit with display, all current/voltage/power measurements, 1 RS485
communication port, 1 RS232 communication port
Transducer
Option T20 |
|| |4 isolated analog outputs, 0-20 mA and 4-20 mA assignable to all measured
parameters, 4-20 mA analog input, 2nd RS485 communication port
T1 |
|| |4 isolated analog outputs, 0-1 mA assignable to all measured parameters, 4-
20 mA analog input, 2nd RS485 communication port
Control
Option C|
|3 additional programmable output relays (for a total of 4), 4 programmable
switch inputs
Power Analysis
Option AHarmonic analysis, triggered trace memory, waveform capture, event recorder, data logger