Fluke 1744, 1743 User Manual
99 Washington Street
Melrose, MA 02176
Fax 781-665-0780
TestEquipmentDepot.com
®
1744/1743
Power Quality Logger
PN 2560353
April 2006 Rev.1, 6/06
© 2006 Fluke Corporation, All rights reserved. Printed in USA
All product names are trademarks of their respective companies.
Users Manual
Table of Contents
Title Page
Introduction .......................................................................................... 1
Information and PC Software CD..................................................... 1
Logger Power Supply ....................................................................... 2
Power Interruptions........................................................................... 2
Introduction to the Logging Functions.................................................. 2
Symbols ............................................................................................ 4
Safety Instructions ................................................................................ 4
Qualified Personnel........................................................................... 6
Standard Equipment and Optional Accessories ................................ 6
Features............................................................................................. 8
Power Network Configurations ........................................................ 10
Working with Logged Data............................................................... 10
Using the Logger .................................................................................. 11
Logging Jobs..................................................................................... 11
Preparing the Logger for Use............................................................ 12
Test Leads – Markings.................................................................. 14
Connecting Current Probes ........................................................... 14
Logging with Voltage Converters................................................. 15
Connecting the Logger...................................................................... 15
Connections in 3-Phase 4-Wire (Wye) Systems ........................... 18
Connections in 3-Phase 3-Wire (Delta) Systems .......................... 19
Connections for Single-Phase Logging......................................... 20
Connections for Medium-Voltage Networks ................................ 21
Phase-Phase Delta Logging .......................................................... 22
Phase-Ground, Wye-Logging ....................................................... 23
Logging with Two Voltage Converters and
Two Current Transformers............................................................ 24
Logging............................................................................................. 25
Completing the Logging Job......................................................... 26
Evaluating the Logged Data.............................................................. 27
Methods of Logging.............................................................................. 27
Measuring Ranges............................................................................. 27
Signal Sampling............................................................................ 28
Resolution Accuracy......................................................................... 28
Voltage Variations ............................................................................ 29
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Users Manual
Voltage Harmonics........................................................................... 32
Current Harmonics ........................................................................... 33
Power ............................................................................................... 37
Logger Parameters with Function P ..................................................... 38
Logger Parameters with Function A..................................................... 41
Maintenance ......................................................................................... 45
Lithium Battery ................................................................................ 45
Disposal............................................................................................ 45
Technical Specifications....................................................................... 46
Logging Parameters – Overview ...................................................... 46
General Specifications...................................................................... 52
Logging Function P.......................................................................... 54
Logging Function A – “All” parameters........................................... 55
PQ Log PC Application Software ........................................................ 57
Min/Max Values........................................................................... 30
Voltage Interruptions.................................................................... 31
Voltage Dips and Swells .............................................................. 32
Mains Signaling............................................................................ 33
THDV – In Function A................................................................. 34
Calculation of THD in Measuring Function P.............................. 35
Flicker .......................................................................................... 35
Unbalance..................................................................................... 36
Frequency..................................................................................... 36
Current Logging ........................................................................... 37
Logging Function A ..................................................................... 37
Crest Factor (CF).......................................................................... 37
Maximum Number of Intervals for Logging Function P.............. 47
General Information ..................................................................... 47
Environmental Specifications....................................................... 48
EMC ............................................................................................. 48
Power Supply ............................................................................... 49
Measurement ................................................................................ 49
Input Voltage................................................................................ 50
Current Input with Flexi Set......................................................... 50
Current Input for Clamp ............................................................... 51
RMS Logging Slow Voltage Variations....................................... 52
Current Logging Values ............................................................... 52
Events Dips, Swells, Interruptions................................................ 52
Flicker .......................................................................................... 52
Power (Logging Functions A, P only) P, S, |P|............................. 53
Harmonics .................................................................................... 53
Statistics ....................................................................................... 53
Logging Values ............................................................................ 54
Application................................................................................... 54
Logging Values ............................................................................ 55
Applications ................................................................................. 56
Online Test ................................................................................... 58
ASCII Export................................................................................ 59
ii
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
Contents
Timeplot diagram.......................................................................... 60
UNIPEDE DISDIP Table.............................................................. 61
Cumulative Frequency – Harmonics............................................. 62
Index
(continued)
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1744/1743
Users Manual
iv
List of Tables
Table Title Page
1. Symbols.............................................................................................. 4
2. Standard Equipment........................................................................... 7
3. Optional Accessories.......................................................................... 7
4. 1744/1743 Power Quality Logger -
Controls and Indicators ...................................................................... 9
5 Test Lead Markings............................................................................ 14
6. Measuring Ranges.............................................................................. 27
7. Logging Parameters - Overview......................................................... 46
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1744/1743
Users Manual
vi
List of Figures
Figure Title Page
1. 1743 and 1744 Power Quality Loggers.............................................. 3
2. 1744/1743 Power Quality Logger - Front View................................. 8
3. Supplying Operating Power to the Logger......................................... 13
4. Logging in a 3-Phase 4-Wire (Wye) System...................................... 18
5. Logging in a 3-Phase 3-Wire (Delta) System..................................... 19
6. Single Phase Logging......................................................................... 20
7. Measuring 3-Phase Voltages in a 3-Wire (Delta)
System with Three Voltage Converters.............................................. 21
8. PQ Log Settings for a 16 kV Network ............................................... 22
9. PQ Log Settings for a 16 kV Network ............................................... 23
10. Measuring 3-Phase Voltages in a 3-Wire System
with Potential Transformers (Aron Measuring Circuit)...................... 24
11. PQ Log Settings for a 16 kV Network ............................................... 25
12. Selecting Voltage Input Ranges During Job Processing..................... 28
13. Measuring Voltage Variations............................................................ 29
14. Logging Min and Max Values............................................................ 30
15. Voltage Interruption........................................................................... 31
16. Voltage Dips and Swells .................................................................... 32
17. Measuring Flicker Values .................................................................. 36
18. Online Test ......................................................................................... 58
19. ASCII Export ..................................................................................... 59
20. Timeplot Diagram .............................................................................. 60
21. UNIPEDE DISDIP Table................................................................... 61
22. Cumulative Frequency – For Voltage and
Current Harmonics............................................................................. 62
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1744/1743
Users Manual
viii
1744/1743
Power Quality Logger
Introduction
The Fluke 1744 and 1743 Power Quality Loggers are sophisticated, robust,
easy-to-use electrical power-recording devices for the electrician or powerquality specialist.
Note
This manual also refers to the 1744 or 1743 Power Quality Logger
simply as “the Logger.”
You’ll prepare the Logger for use with the included PQ Log software CD. You
can then connect the Logger to an electrical power-distribution network to log
a variety of power parameters, recorded as sequential averaged values over an
averaging period you can define. The Logger can measure up to three voltages
and four currents simultaneously.
The Logger enables you to conduct a load study over a specified period, or
monitor power quality to discover and report disturbances in low- and
medium-voltage networks.
The Logger has a light, compact design. Its case is sealed to IP 65
specifications, so it can be used outdoors in any weather.
Information and PC Software CD
The CD included with the Logger contains the PQ Log application software for
Windows
Upgrade Utility for installing firmware upgrades.
The PQ Log software prepares the Logger for use, and downloads data from
the Logger to a connected PC. You can then view the logged data in graphical
and tabular form, export it to a spreadsheet, or create reports for printing. For
details and instructions, see the PQ Log Users Manual on the CD.
®
, along with users manuals in multiple languages, and the 1735
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1744/1743
Users Manual
Logger Power Supply
The Logger does not include a power switch, but turns on automatically
whenever its power supply leads are connected to a voltage in its allowed
range. You can plug the Logger’s power supply leads into a standard wall
outlet (using the included adapter cord), or you can connect them directly to
the power network under test (in parallel with the test leads) if there is no
convenient wall outlet.
Power Interruptions
The Logger can sustain operation through power interruptions of up to
three seconds, long enough for most common interruptions. In longer
interruptions, the Logger shuts down, then resumes logging when power
returns.
Introduction to the Logging Functions
The Logger monitors power quality and locates disturbances in low and
medium voltage distribution networks. It measures up to three voltages and
four currents. Logged values are saved in your choice of sequential averaging
periods. You graphically or numerically evaluated measured values with PQ
Log.
The Model 1744 has two types of logging functions: logging function A
(Advanced) and logging function P (Power). Function A is the full set of
parameters, and function P provides logging capability optimized for load
studies and basic power logging. Function P contains every parameter in
Function A except voltage and current harmonics and interharmonics. Model
1743 provides only logging function P.
Measured values are saved as averaged values over user-selected averaging
periods. You can evaluate measured values graphically or in tabular form with
PQ Log software.
Logging function parameters:
• RMS Voltage of each phase (average, min, max)
• RMS Current of each phase and neutral (average, min, max)
• Voltage events (dips, swells, interruptions)
• Power (kW, kVA, kVAR, Power PF, Power tangent)
2
Power Quality Logger
Introduction to the Logging Functions
• Energy, total energy
• Flicker (Pst, Plt)
• Voltage THD
• Current THD
• Current CF
• Voltage harmonics to the 50
th
(not in P function)
• Voltage interharmonics (not in P function)
• Mains signaling voltage
• Unbalance
• Frequency
CURRENT INPUT
MEASUREMENT INPUT
I
I3I2I1V3V2V
N
SUPPLY INPUT
660V MAX
L1/A
L2/B
88-660V
45-65 Hz
L3/C
N
100-350V
830V
RMS
MAX CAT
5VA
600VCAT
300V CAT
1
POWER
egb002.eps
10V
RMS
MAX
POWER LOGGER
1743
START
STOP
232SR
Figure 1. Model 1744/1743 Power Quality Loggers
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1744/1743
Users Manual
Symbols
Table 1 lists the symbols used on the instrument and in this manual.
Table 1. Symbols
Symbol Description
W
X
J
T
F
P
)
~
;
Important information. See the manual.
Hazardous voltage.
Earth ground.
Double insulation.
Direct current (DC).
Conforms to European Union requirements.
Canadian Standards Association is the certified body used
for testing compliance to safety standards.
Do not dispose of this product as unsorted municipal waste.
Contact Fluke or a qualified recycler for disposal.
Conforms to relevant Australian Standards.
Safety Instructions
Please read this section carefully. It will make you familiar with the most
important safety instructions for using the Logger.
Warnings identify conditions and actions that pose safety hazards to the
user, and Cautions identify conditions and actions that can damage the
Logger.
4
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
Power Quality Logger
Safety Instructions
W X Warnings
• To avoid electrical shock, do not connect any part of
the Logger to systems that have higher voltages to
ground (earth) than are marked on the Logger.
• Areas between the power company meter and the
source of the distribution system are characterized as
CAT IV areas. To avoid electrical shock or equipment
damage, never connect the Logger to power in CAT IV
areas if the voltage-to-earth ground is greater than
300 V.
• To avoid damaging the Logger, never connect its
voltage measuring inputs to phase-to-phase voltages
higher than 830 V.
• To avoid damaging the Logger, never connect the
power supply leads to voltages higher than 660 V RMS
ac.
• The Logger is to be used and handled only by qualified
personnel (see page 6).
• Maintenance work on the Logger must be done only by
qualified service personnel.
• Use only the current probes specified in this manual. If
you use flexible current probes, wear suitable
protective gloves or work on de-energized conductors.
• Do not expose the Logger to moisture or humidity.
• To prevent electrical shock, always connect power
supply and voltage test leads to the Logger before
connecting to the load.
• All accessories must be approved for 600 V CAT III or
higher.
• Use the Logger only with its original standard
equipment or with approved optional accessories, as
listed in Table 2 and Table 3 in this manual.
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1744/1743
Users Manual
• Connect clip-on current transformers and/or Flexi Set
to insulated live conductors only.
• If measuring sensors are to be connected to non-
insulated live conductors, additional personal
protective measures must be taken as required by local
government agencies.
W Caution
To avoid damage, use the 1744/1743 Power Quality Logger,
only with the following nominal voltages:
• Single-/3-phase, 4-wire (Wye) systems (P-N): 69 V
to 480 V
• 3-phase 3-wire(Delta) systems (P-P): 120 V to 830 V
WX Warning
To avoid electrical shock, or damaging the Logger’s
internal protective circuitry or weatherproof seal, do not
open the Logger.
Qualified Personnel
The following qualifications are required for using the Logger safely:
• Trained and authorized to switch on/off, ground (earth), and mark
power distribution circuits and devices in accordance with electrical
engineering safety standards.
• Trained or instructed in safety engineering standards for maintaining
and using appropriate safety equipment.
• Trained in first aid.
Standard Equipment and Optional Accessories
Table 2 lists the standard equipment for the 1744/1743 Power Quality Logger,
and Table 3 lists optional accessories.
6
Power Quality Logger
Safety Instructions
Table 2. Standard Equipment
Equipment Model/Part
Number
Power Quality Logger 1744/1743
International IEC Power Plug Adapter Set 2441372
RS232 Cable, Red, Null-Modem 2625531
Shielded 4-Phase Flexi Set (15 A/150 A/1500 A/3000 A) FS17XX
Dolphin Clip, Black (4x) 2540726
Color Coding Wire Clips WC17XX
Soft Case 1642656
English Users Manual 2560353
CD with Users Manual (English, German, French, Spanish,
Portuguese, Simplified Chinese, Italian), and PQ Log
software (same languages as the manual)
Power Cord 2561702
USB Adapter
2583487
Note
Power supply and voltage measuring leads are built into the
1744/1743 Power Quality Logger.
Table 3. Optional Accessories
Description Accessory
3-Phase Flexi Set MBX 3FLEX
3-Phase 1 A/10 A micro CT EPO405A
Pole Mounting Kit 1743/4 Pole Kit
Permlink Software for Modem Permlink
Magnetic Hanging Kit 1281997
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1744/1743
Users Manual
Inspect the contents of the shipping box for completeness and damage. Report
any damage to the shipper.
Features
This section introduces the Logger’s controls, indicators, and other features.
Refer to Figure 2 and Table 4.
6
CURRENT INPUT
MEASUREMENT INPUT
10V
RMS
MAX
7
3
232SR
START
STOP
POWER LOGGER
1743
I
N
I3I2I1V3V2V
SUPPLY INPUT
660V MAX
L1/A
L2/B
88-660 V
45-65 Hz
L3/C
N
100-350 V
RMS
MAX CAT
830V
600V CAT
300V CAT
1
5VA
POWER
1
5
2
4
Figure 2. 1744/1743 Power Quality Logger - Front View
egb021.eps
8
Power Quality Logger
Safety Instructions
Table 4. 1744/1743 Power Quality Logger - Controls and Indicators
Item Name Description
A
B
C
D
E
F
G
Power supply
leads and
3-phase plus
neutral voltage
test leads
RS232
interface port
START/STOP
Channel LEDs
Power status
LED
Connector for
Flexi Set or
current clamps
Logging status
LED
Power supply voltage range: 88-660 V ac or
100-350 VDC, 50 Hz / 60 Hz, 600 V CAT III.
Fixed installed voltage input cables for L1 or A,
L2 or B, L3 or C, N.
The highest permissible nominal voltage for power
supply input is 660 V.
The highest permissible nominal voltage for signal
input is 830 V in a 3-wire network with Delta
connection.
In a 4-wire network with Wye connection, the
highest permissible nominal voltage is 480 V.
When using PTs and CTs for measuring voltage
and current in a medium-voltage network, refer to
the IEC 60044 international standard for
guidelines.
The serial RS232 interface is used to communicate
with a PC. The Logger is connected to the PC’s
serial port (or a modem for remote communication)
using the interface cable. Use a USB adapter if
necessary.
The START/STOP button is used to start or end
switch-operated logging sessions.
The logging channel LEDs indicate whether the
applied voltages and currents are within the
nominal range set using the PQ Log software.
Continuously on = Logging signal in nominal range
Short blinks = No or low-level signal
Long blinks = Overload
Continuously on = Power supply voltage in
permissible range
Off = No power
Flexi sets or current clamps are detected
automatically at power-up. If you change the current
probe type, be sure to remove and restore power so
the Logger will detect the new current probe.
Nominal ranges for the Flexi Set are 15 A, 150 A,
1500 A, and 3000 A ac. Nominal input for current
clamps is 0.5 V.
Continuously on = Logging in progress
Blinking = Logging stopped or not started
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1744/1743
Users Manual
Power Network Configurations
You can set up the Logger to work with several power network configurations:
• Single-phase voltage
• Single-phase voltage, current, power
• 3-phase voltage
• 3-phase voltage, 3-phase current, power
• 3-phase voltage, 3-phase current, neutral current, power
Note
3-phase logging with no neutral current can be done with appropriate
optional accessories (available separately).
Working with Logged Data
Logged data can be evaluated using the PQ Log software to provide the
following:
• Amount, date/time, and duration of quick and slow voltage variations
• Half-cycle 10 ms-extreme values for 50 Hz (8.3 ms at 60 Hz) MIN
and MAX for each measuring interval
• Depth and duration of voltage dips
• Correlation between peak current and voltage dips
• 95%-flicker values according to EN 50160
• Number and duration of interruptions
• Compliance of harmonic levels with defined limits
• Mean and peak values of phase currents
• Value of neutral conductor current
• Current total harmonic distortion (THD) of phase and neutral
conductor currents
• Profile of active, reactive, and apparent power versus time
• Monitoring of power factor (PF), and information about effectiveness
of compensation systems
• Graphical representations of logging data and statistics
10
Power Quality Logger
Using the Logger
Using the Logger
This section explains how to operate the 1744/1743 Power Quality Logger.
A typical logging session includes four steps:
1. Preparing the Logger for use with the PQ Log software.
2. Installing the Logger at the logging site.
3. Leaving the Logger to collect data for a period.
4. Downloading and evaluating the logged data.
These steps are described in the following pages.
Logging Jobs
Logging jobs are defined using the PQ Log software, and transferred to the
Logger over the RS232 cable. Each job contains the following information:
• Logging function (P for Model 1743, and P or A for Model 1744)
• Measuring period, defined by start and end times
• Time activated, switch or immediate job
• Input range
• Nominal voltage, primary and secondary voltage for logging with
voltage converters
• Logging of phase-neutral wire or phase-phase
• Memory model
• Averaging period length
• Logging time periods
• Interharmonics and signaling voltages
• Limit values for events
• Memory model for events: circular (first-in/first-out, continuous), or
linear (quit logging when logging period is finished)
• Logging of current-neutral wire
• Converter ratios for current and voltage if using potential transformers
(PTs) and current transformers (CTs) at a medium-voltage network
site
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1744/1743
Users Manual
Preparing the Logger for Use
Prepare the 1744/1743 Logger for use with the PQ Log software as follows
(see Figure 3):
1. Connect the Logger to line power. Use the power supply cables to
connect to an outlet, or to the test leads phase and neutral for Wye
configurations, or any two-phase leads for delta.
W Caution
If you are powering the Logger in parallel with the test
leads, and the voltage under test at the Logger power
supply connections could be greater than 660 V RMS ac,
plug the power supply leads into an outlet instead.
Otherwise, you could damage the Logger.
12
Power Quality Logger
Using the Logger
Power from Wall OutletPower in Parallel
with
Test Leads
Max 660 V
Voltage
Test Leads
Voltage
Test Leads
Power Supply
Leads
Power Supply
Leads
CURRENT INPUT
MEASUREMENT INPUT
MAX
POWER LOGGER
I
I3I2I1V3V2V
N
SUPPLY INPUT
660V MAX
L1/A
L2/B
88-660V
45-65Hz
L3/C
N
100-350V
830V
RMS
MAX CAT
5VA
600VCAT
300VCAT
1
POWER
10V
RMS
1743
START
STOP
232SR
CURRENT INPUT
MEASUREMENT INPUT
MAX
POWER LOGGER
I
I3I2I1V3V2V
N
SUPPLY INPUT
660V MAX
L1/A
L2/B
88-660V
45-65Hz
L3/C
N
100-350V
830V
RMS
MAX CAT
5VA
600VCAT
300VCAT
1
POWER
egb031.eps
10V
RMS
1743
START
STOP
232SR
Figure 3. Supplying Operating Power to the Logger
2. Connect the RS232 interface cable to the serial port of your PC.
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