Elcomponent PowerPro User manual

PowerPro with PowerFlow Firmware
8 Channel Power Quality Datalogger
User's Guide

ii
PowerPro User's Guide
All Rights Reserved.
The information in this document is subject to change without notice.
Elcomponent Ltd has made every effort to ensure the accuracyof
this manual. However, Elcomponent Ltd makesno warranties
with respect to this documentation and disclaims any implied warranties of
merchantability and fitnessfor a particular purpose. Elcomponent Ltd
assumes no responsibility for any errors that may appear in this document.
Trademarks
IBM is a registered trademark of International Business Machines
Corporation.
Windows, Windows 95 and Windows 98 are trademarks of Microsoft
Corporation.
All other product names are copyright and may be trademarks and/or
registered trademarks of their respective companies.
Document number: CID1001.01
Date: May 2, 2002

i
Table of contents
Table of contents .............................................................................. i,ii
Introduction .........................................................................................1
Safety..................................................................................................2
Quick Start ..........................................................................................3
Hookup Configurations .......................................................................5
Hookup Diagnostic Warnings .............................................................7
Power Flow Firmware Features........................................................10
RMS Data Storage .....................................................................10
Harmonics and Waveform Storage ............................................10
Power Calculations ....................................................................10
Total Harmonic Distortion (THD)................................................10
Frequency ..................................................................................10
Event Capture ............................................................................11
Flicker (Optional) ........................................................................11
Side Panel ........................................................................................12
Front Panel .......................................................................................13
Logger Operation..............................................................................14
Turning On and Off ....................................................................14
Memory Card..............................................................................14
Setup ..........................................................................................16
Logging Setup.........................................................................16
RMS Storage Interval.........................................................16
Harmonic Storage Interval .................................................16
Connection Type (1P2W, 1P3W, 3P3W, 3P4W and 2.5E)17
Trigger Levels .........................................................................17
Line Voltage .......................................................................17
Line Frequency ..................................................................18
Over Voltage ......................................................................18
Under Voltage ....................................................................18
Over Frequency .................................................................19
Under Frequency ...............................................................19
Flicker Setup ...........................................................................19
PST Duration......................................................................19
PLT Duration ......................................................................19
Line Voltage .......................................................................20
Scale Factor ............................................................................20
Voltage Range ...................................................................20
Ext PT ................................................................................20
Phase Current ....................................................................20
Neutral CT..........................................................................21
System Setup..........................................................................21
Setup Lock .........................................................................21

ii
Logger ID ........................................................................... 21
Time and Date Setting....................................................... 21
Calibration.......................................................................... 22
Display ....................................................................................... 23
Measured Data ....................................................................... 23
Voltage, Current and Frequency ....................................... 23
Neutral Voltage and Current.............................................. 24
Real Power and Apparent Power ...................................... 24
Reactive Power and Power Factor.................................... 24
Total Power ....................................................................... 24
Flicker ................................................................................ 24
Data Statistics......................................................................... 24
Voltage Statistics ............................................................... 25
Current Statistics ............................................................... 25
Power statistics.................................................................. 26
Neutral Voltage Current Statistics ..................................... 27
Flicker Statistics................................................................. 27
Waveform Display .................................................................. 28
Harmonic Bar Chart Display................................................... 28
Memory Statistics ................................................................... 28
Logger Statistics ..................................................................... 28
Logger Operation ............................................................................. 29
Record ....................................................................................... 29
Start Recording....................................................................... 29
Stop Recording....................................................................... 29
Sleep or Low Power Mode ..................................................... 29
Downloading..................................................................................... 30
RS-232 Cable Configuration...................................................... 30
Downloading using the RS-232 Serial Port ............................... 30
Serial Communications .................................................................... 31
Notes ................................................................................................ 32

PowerPro with PowerFlow Firmware
1
Introduction
The PowerPro represents leading edge technology in the
measurement of Power Quality. From the logger front panel or, for
more detail, using Candura Instrument’s PowerView software you can
view:
• Trends in Voltage, Current, Power and Frequency
• Waveforms and harmonic activity for both voltage and current
• Voltage sags and swells
• Frequency deviations
• Flicker (IEC 868 / IEC 61000-4-15) - Optional
The PowerPro is an 8 channel power quality data logger. It
can monitor 3 phases of voltage and current as well as a neutral
voltage and current. Measured parameters are updated every ½ cycle
to ensure that nothing is missed. Most measurements can be viewed
on the front panel LCD in the field and logged data can be transferred
to a computer using the removable memory card. The memory card
interface also provides the means to program the logger and to
upgrade the PowerPro firmware. The logger is powered from the V1
voltage measurement input, or if V1 is a weak source an auxiliary
power supply may be used. The PowerPro has an internal battery
that can power the logger for up to 8 hours in the event of a power
outage. Voltage inputs are transformer isolated and protected with
metal oxide varistors and fuses for safety. The entire unit is enclosed
in a rugged water tight case for use in harsh environments.

PowerPro with PowerFlow Firmware
2
Safety
Although this instrument is designed to be as safe as possible, safety
is ultimately the responsibility of the operator. This instrument should
only be operated by suitably qualified and authorized personnel.
Please read and UNDERSTAND the following information before
operating this instrument
• The PowerPro uses a membrane keypad that could be damaged
if a sharp object is brought into contact with it. This may expose
the operator to potentially hazardous voltages.
• Frequently inspect the test leads and the instrument for damage.
If the instrument shows any signs of physical damage or functions
improperly, it should not be used.
• Never work alone with high voltage circuits. Ensure that a
qualified observer is mindful of your activities.
• When performing any measurements involving high voltage
circuits, all connections should be made to the circuits while the
power is off. To ensure personal safety, the test leads and related
connectors should not be handled while the circuit is energized.
• Do not attempt to measure any voltage higher than the maximum
rating of 750V RMS. Failure to observe the maximum rating could
result in damage to the equipment or personal injury.
• Refer servicing of this instrument to qualified personnel only.
Potentially lethal voltages may be present inside the case. If any
of the protective circuitry is improperly repaired, the safety of this
product could be compromised.

PowerPro with PowerFlow Firmware
3
Quick Start
Connecting the PowerPro to the circuit to be measured is a
straightforward process.
1. Connect the voltage leads for each phase to be measured. For
proper operation V1 must always be used. Three phase circuits
can be connected in either a ‘wye’ or 'delta’ configuration. Refer to
the ‘Hookup Configurations’ section for the various methods of
connecting the voltage leads.
2. Connect the phase CT clamps or the three phase Flex CT.
Note that only one or the other may be used – if the three phase
Flex CT is used then the phase CT clamps must be disconnected.
The neutral CT clamp may be used at the same time as the three
phase Flex CT.
3. Ensure a memory card is installed.
4. Turn the logger on (if it is turned off) by pressing and holding any
key except F6. If installed memory card has data, select 'NO'
when asked to load Setup and Data from card.
5. Use the ‘SETUP’ key and function keys to check and modify any of
the setup parameters. If a computer is connected to the serial
port, run PowerView software and select 'Logger' and 'Configure'
to check and modify any of the setup parameters.
6. Press the ‘Record’ key and then F2 to start recording. If there are
any error messages, please refer to the ‘Hookup Diagnostic
Warnings’ section.
7. The measured values can be viewed from the logger using
'DISPLAY' key and function keys. If a computer is connected to
the serial port run the PowerView software and select 'Logger' and
'Status'.
Continued....
Retract Shroud to Release

PowerPro with PowerFlow Firmware
4
Quick Start continued
8. To stop logging press the ‘RECORD’ key and then F4 followed by
F1 to confirm the stop command.
Note: Static discharges may occur when connecting leads,
communication cable or memory card, depending on
environmental conditions. This is not hazardous and will not
damage the logger. However it may affect the integrity of the data
if the logger is recording. Connection and disconnection of leads
etc. should be done while the logger is not recording. Before
handling a logger that is recording the operator should discharge
any potential static by touching a grounded object.
9. Data is transferred to a computer using the memory card. When
logging has been stopped the memory card can be removed from
the logger. The memory card can be inserted directly into an
ImageMate Card reader or, with a PCMCIA adapter, it can be
inserted into a PCMCIA slot in a laptop computer. Run
PowerView and select 'File', 'Open' and then go to the drive that
has been configured for the memory card, it will have the
description 'Power Pro'. Change the file type to 'Data Card Files'.
If there is data on the card you will then see a file that can be
opened. After opening the file a directory and file name (you can
keep the same file name) must be selected for the processed file.

PowerPro with PowerFlow Firmware
5
Hookup Configurations
The PowerPro can be used to monitor all of the most common power
distribution systems. Following are descriptions of the five most
common field setups:
Continued….

PowerPro with PowerFlow Firmware
6
Hookup Configuration continued

PowerPro with PowerFlow Firmware
7
Hookup Diagnostic Warnings
Before the logger starts recording it does a number of checks on the
connected signals, if it detects a potential problem a message is
displayed and the operator must select either ‘Retry’ or ‘Ignore’ – if the
operator presses ‘ESC’, ‘SETUP’, ‘DISPLAY’ or ‘RECORD’ the start
process is aborted.
Possible messages and descriptions:
‘Voltage 1 Too Low’
‘Voltage 2 Too Low’
‘Voltage 3 Too Low’
-Voltage being measured is less than 35V on 240V range or
less than 90V on 600V range.
‘Voltage 1 Too High’
‘Voltage 2 Too High’
‘Voltage 3 Too High’
-Voltage being measured is greater than 300V on 240V
range or greater than 750V on 600V range.
‘Current 1 Too High’
‘Current 2 Too High’
‘Current 3 Too High’
-Current being measured is greater than 125% of the CT
rating.
‘Voltage Hookup Error’
-This indicates that the operator has selected a single phase
configuration but has connected to a three phase system or
vice versa.
‘V2 Inverted’
-Voltage leads on channel two are reversed.
Continued....

PowerPro with PowerFlow Firmware
8
Hookup Diagnostic Warnings continued
‘V3 Inverted’
-Voltage leads on channel three are reversed.
‘-ve Power Check CT#1’
‘-ve Power Check CT#2’
‘-ve Power Check CT#3’
-This usually means that the relevant CT has been
connected in reverse. To fix the problem remove the CT,
rotate it 180 degrees, reconnect it and then press ‘Retry’. In
some cases this is not an error (i.e. when measuring a
generator output) and pressing ‘Ignore’ is the correct
response.
‘Phase Sequence Error’
-This occurs for three phase installations and indicates that
the measured phase sequence is not ABC. To fix the
problem swap the B and C voltage leads and then press
‘Retry’.
‘Data Sync Error’
-This problem is internal to the logger. To fix the problem
put the logger to sleep (press ‘RECORD’ and then ‘F6’) and
then wake it up (press and hold any key except ‘F6’). If this
does not fix the problem please contact your nearest Product
Support Centre.
‘Freq Event Triggered’
-This indicates that an under/over frequency condition is
active. This may indicate that the trigger levels are not set
up properly (to view them press ‘SETUP’ and ‘F2’).

PowerPro with PowerFlow Firmware
9
Hookup Diagnostic Warnings continued
‘Volt Event Triggered’
-This indicates that an under/over voltage condition is active.
This may indicate that the trigger levels are not set up
properly (to view them press ‘SETUP’ and ‘F2’).

PowerPro with PowerFlow Firmware
10
Power Flow Firmware Features
RMS Data Storage
The PowerPro stores RMS data at set intervals which can be adjusted
from 1 to 30 seconds or 1 to 30 minutes. The minimum, maximum and
average values are stored at the end of each storage interval. The
averaged values are calculated from the sum of the RMS values
(updated every ½ cycle) over the preceding storage interval. The
minimum and maximum values are updated every ½ cycle over the
preceding storage interval.
Harmonics and Waveform Storage
The logger displays up to the 21st harmonic on its display while the
software displays up to the 64th harmonic. Storing harmonics uses a
significant amount of memory. To maximize memory usage harmonics
and waveforms can be stored at a lower rate than the RMS data. For
example, if the logger is configured for 3P4W, Neutral On, it can record
up to 14,285 records when recording harmonics and waveforms every
storage interval on a 32 M memory card. When harmonics and
waveforms are stored every 5th storage interval up to 56,490 records
can be stored.
Power Calculations
The power calculations are updated every ½ cycle. Only the averaged
values of power are recorded. Power factor displayed is the true
power factor (not the displacement power factor which is determined
from the phase angle shift between voltage and current) and is
calculated as the ratio of the real power (KW) divided by the apparent
power (KVA).
Total Harmonic Distortion (THD)
THD is calculated as the ratio between the square root of the squared
sum of the harmonic magnitudes (for harmonics 2…64) divided by the
fundamental value.
Frequency
The system frequency is measured from the signal on V1 input.
Frequency will not be measured if the voltage is below 35V in the 240V
range or 90V in the 600V range.

PowerPro with PowerFlow Firmware
11
Power Flow Firmware Features
Event Capture
Under/over voltage events and under/over frequency events are stored
when they occur. The trigger levels are set from the Setup menu under
‘TRIGGER LEVELS’. The duration of the events are recorded with a ½
cycle resolution. Voltage events are tagged as sags/swells if they are
under 2 seconds in duration and under/over if they are longer. The
Power View software reports their duration in number of cycles for
events less then 10 seconds and in seconds for longer events.
The logger uses a hysteresis value of 0.1% of full scale to determine
when the event has finished. For example if the under-voltage trigger
level is set at 228.0 volts the logger will start recording an event when
the voltage reaches 228.0 volts and will stop recording the event when
the voltage goes up to 228.3 volts.
Flicker (Optional)
Flicker is an optional extra to the Power Flow firmware. If the logger
has been enabled for recording flicker the words ‘FLICKER METER’
will be printed on the display on the right hand side of the main screen
(pressing ‘ESC’ a number of times will access the main screen).
Flicker is calculated according to IEC 868 / IEC 61000-4-15
specifications. Both PST (short term flicker) and PLT (long term flicker)
are calculated for each of the 3 voltage channels.

PowerPro with PowerFlow Firmware
12
Side Panel
The voltage and current connections are colour coded according to
phase and polarity (for voltage).
Phase 1 or Phase A Red
Phase 2 or Phase B Yellow
Phase 3 or Phase C Blue
Neutral Current Grey
Neutral Voltage White
There is a dedicated connector for a three phase Flex CT. This
connector supplies the power to the Flex CT and receives the 3
isolated current signals. There is an auxiliary connector that is used to
connect to an external DC power supply (for use when V1 is connected
to a weak source) and to a modem.
When measuring less than 3 voltages V1 must always be used. V1
zero crossing is used to synchronize the data sampling and measure
frequency. In the event of an outage on V1 the logger has an internal
digital phase lock loop that simulates the zero crossing until V1 is
restored.
Either phase CT’s or a three phase Flex CT may be used to
monitor phase current. Only one type of CT may be connected to
the logger at a time – if the three phase Flex CT is used then the
phase CT’s MUST be disconnected from the logger. Leaving the
phase CT’s connected will cause errors in the Flex CT readings.

PowerPro with PowerFlow Firmware
13
Front Panel
The front panel of the PowerPro has a graphics display, a 10 button
keypad, an RS-232 communications port and a memory card interface.
The graphics display is 240x64 pixels with an LED backlight. Text on
the display is organized in 8 lines by 40 characters (small characters)
or in 4 lines by 20 characters (large characters), some screens
incorporate both types of characters. Graphics (waveforms and
harmonic bar chart) are also displayed with text.
The keypad has two types of buttons. The bottom row of 4 keys are
fixed function buttons and the top row of 6 keys are function keys that
change function depending on the active screen on the display. In
most screens the bottom line of the display is in inverse video and is
used to describe the functions associated with the six function keys.
The RS-232 communications port is a 3 wire (Rx, Tx, Gnd) serial
interface. Data is sent and received using the software package
PowerView. The Xmodem communications protocol is used to
transfer data.
The memory card interface is used to reprogram the PowerPro’s
internal firmware from a firmware card (for new applications or to
upgrade the firmware) and to store recorded data on a memory card.
The PowerPro will not begin a survey without a memory card installed.
Once a survey has been started the memory card may not be removed
until the survey has been stopped.

PowerPro with PowerFlow Firmware
14
Logger Operation
Turning On and Off
The PowePro should be put into low power (or sleep) mode when not
in use. In low power mode only the real time clock and keypad
interface are active. Current consumption from the battery is reduced
to less than 100 microamps. The logger is put in low power mode by
pressing the ‘RECORD’ button followed by the F6 (SLEEP) button.
The logger will put itself into low power mode when it detects a low
internal battery voltage. If the logger was recording at the time it will
close the data files as if the operator had stopped recording before
going into low power mode. After going into low power mode due to a
low battery voltage the battery will have enough capacity to keep the
real time clock functioning for over 6 months.
To turn the logger on any key (except F6) must be pressed and held
for approximately 1 second. When the logger powers up it does a self
diagnostic on internal functions, if an error is detected a diagnostic
screen is displayed and the logger waits for an operator to elect to put
the logger back into sleep mode or to re-initialize the logger (reboot).
Memory Card
The logger continually checks the memory card interface to see if a
card has been inserted or removed. When it detects a card being
inserted (or a card in the socket immediately after power up) the logger
checks the card size and looks for valid data on the card. If no valid
data is on the card it displays the Memory card size with the message:
‘No Setup or Data On Card PRESS ANY KEY’.
The operator must press any key to continue. The logger can now be
used to start a survey and data will be stored on the memory card. If
there was data from a previous survey on the card the logger will
display the Memory card size with the message:
‘Load Setup and Data From Card?’
The operator can select ‘YES’ or ‘NO’. If ‘NO’ is selected then the
logger will not load any data from the card and if a survey is started the
data on the card will be overwritten. If ‘YES’ is selected then data from
the previous survey will be loaded back into the logger including all the
setup parameters that were in the logger when the previous survey
was done.

PowerPro with PowerFlow Firmware
15
Logger Operation (Memory Card)
When the logger detects a card being removed it changes the screen
to the initial screen if the logger was not recording. If the logger was
recording when the memory card is removed it displays an error
message:
‘RAM Card Error Please Re-Insert RAM Card
or Survey will end in xx seconds’.
The number of seconds depends on the time until the next storage
time. Even if the card is re-inserted in time it is possible that data on
the card may be corrupted.
The Memory card should NEVER be removed while data is being
recorded, ALWAYS stop recording before removing the Memory
card.
The Memory card offers a fast and convenient method to transfer
recorded data to a computer. To transfer data from the memory card
to a computer, remove the card from the logger and insert into the
PCMCIA slot of the computer using a PCMCIA adapter or insert
directly into an ImageMate card reader. Select ‘File’ from the
PowerView toolbar and then select ‘Open'. Change the directory to
the drive that has been configured for the memory card, it will have the
description 'Power Pro'. Change the file type to 'Data Card Files'. If
there is data on the card you will see a file that can be opened. After
opening the file, a directory and the file name (you can keep the same
file name) must be selected for the processed file.

PowerPro with PowerFlow Firmware
16
Logger Operation
Setup
Pressing the ‘SETUP’ button calls up the main setup screen. From the
main setup screen you can select ‘LOGGING SETUP’, ‘TRIGGER
LEVELS’, ‘FLICKER SETUP’, ‘SCALE FACTOR’, ‘SYSTEM SETUP’ or
‘COMM SETUP’. If a computer is connected to the serial port, then run
PowerView software and select 'Logger' and 'Configure' to check and
modify any of the setup parameters.
Logging Setup
Pressing F1 to select ‘LOGGING SETUP’ allows the operator to select
and change the RMS storage interval, the harmonic storage interval
and the wiring configuration. The operator must press ‘NEXT VALUE’
until the desired setup parameter is highlighted and then press
‘CHANGE VALUE’ to be able to modify the selected setup parameter.
To exit press ‘ESC’ and the display will return to the parameter list
screen.
If the logger is recording and ‘CHANGE VALUE’ is selected the screen
will change to the modification screen, ‘Recording On’ will be printed
on the bottom and no changes will be allowed.
If the Lock function is on and ‘CHANGE VALUE’ is selected the screen
will change to the modification screen, ‘LOCK On’ will be printed on the
bottom and no changes will be allowed.
RMS Storage Interval
The RMS storage interval appears on the left side of the screen and
can be adjusted to between 1 and 30 seconds in increments of 1
second or 1 and 30 minutes in increments of 1 minute. The harmonic
storage interval appears on the right, see description for ‘Harmonic
Storage Interval’.
Harmonic Storage Interval
This selects the same screen that the RMS storage Interval selection
accesses. The harmonic storage interval is displayed on the right side
of the screen. The harmonic storage interval can be set between the
RMS storage interval and 60 seconds (if recording interval is in
seconds) or 60 minutes (if recording interval is in minutes). The
increment value is the RMS storage interval.