Fluke - 1745

Fluke - 1745
Fluke 1740 Series
Three-Phase Power
Quality Loggers Memobox
Technical Data
Assess power quality and conduct long-term
studies with ease
Rugged and portable, Fluke 1740 Series power quality loggers are designed for easy
installation and use, anywhere in low- and medium-voltage applications. There are three
models to choose from to meet your basic or advanced power logging needs.:
Fluke 1743: IP65 water-proof monitor for logging the most common power parameters
including V, A, W, VA, VAR, PF, energy, flicker, voltage events, and THD.
Fluke 1744: Includes the same features as the Fluke 1743. In addition to common power
parameters, the Fluke 1744 also measures voltage and current harmonics,
interharmonics, mains signaling, unbalance, and frequency.
Fluke 1745: Advanced IP50 power quality logger with the same measurement capability as
the 1744, plus real-time LCD, five hour UPS.
Measurement of common power parameters: V, A,
W, VA, VAR, PF, energy, flicker, voltage events
(dips, swells, interruptions), and THD
Measurement of voltage and current harmonics
to the 50th, unbalance, frequency and mains
Dust/water resistance
IP 50
IP 65 water proof
8 MB
4 MB
4 MB
UPS ride-through
> 5 hr
EN 50160
Applications include:
Disturbance analysis – Uncover root cause of equipment malfunction for later mitigation and
predictive maintenance
Quality of service compliance – validate incoming power quality at the service entrance
Power quality studies – Assess baseline power quality to validate compatibility with critical
systems before installation
Load studies – Verify electrical system capacity before adding loads
Energy and power quality assessment – Validate performance of facility improvements by
quantifying energy consumption, power factor, and general power quality before and after
Fluke 1743
Fluke 1744
Fluke 1745
Uncover intermittent and hard-to-find
power quality issues – Fluke 1740 Series
power quality loggers are capable of logging
up to 500 parameters for up to 85 days and
capturing events.
View graphs and generate
reports with Fluke Power Log
With its easy-to-use interface, the
included PQ Log software assists
you with logger setup, enables you
to verify actual measurement values
quickly using the online function,
and downloads data from the logger
to a connected PC operating on
standard Windows® operating
systems. You can view the logged
data in graphical and tabular form,
export it to a spreadsheet, or
generate a professional report with
the Report Writer function.
Plug and play
All three 1740 Series loggers
feature easy plug and play setup for
immediate use. The current probes
are connected to the logger with a
single plug. The instrument
automatically detects, scales, and
powers the probes using line power
from the measured voltages. All
accessories are individually
calibrated and can be shared with
multiple Fluke 1740 series loggers.
Measures all power quality
and power parameters
The Fluke 1745 and Fluke 1744
record over 500 different
parameters for each averaging
period. This allows you to analyze
power quality in detail and to
correlate intermittent events, which
help you identify the root cause of
disturbances. For basic power
logging, the Fluke 1743 captures all
relevant power parameters.
Electrical shock protection
Calculates current harmonics
The Fluke 1740 loggers feature
insulated housings and accessories
to help protect you from electrical
shock when coming into contact
with blanket bus bars, terminals, or
cables. They are also designed to
meet the stringent safety standards
for use in 600 V CAT III and 300 V
CAT IV environments.
Fluke 1745 and Fluke 1744 loggers
can calculate the limits of current
harmonics to predict overload of the
grid according to the standards
VSE, VEOE, VDN, among others.
This powerful feature is beneficial
to users worldwide in support of
predictive maintenance, enabling
current harmonics to be observed
before a distortion appears in the
For root cause analysis, different
measurements such as flicker, voltage and
THD can be shown in the same time plot,
to help you quickly identify the cause of a
Statistical analysis of Voltage and Current
harmonics over a given time period. Red
bar graphs indicate issues with the grid.
Other colors are warnings for potential
future issues. Harmonics can be presented
also as time plots.
Statistical summaries like EN50160 and
DISDIP table allow for a quick,
comprehensive overview of 8 power
quality parameters on one dashboard.
Voltage and Current Measurement
Input voltage
Input range V I P-N
max 480 V ac
Power supply
Input range V I P-P
max 830 V ac
88 V …660 V absolute, 50 Hz / 60 Hz
100 V … 350 V dc
Internal fuse: 630 mA T
Max. overload voltage
1.2 V I
Input range selection
By job programming
5 Watts
P-P or P-N, 1- or 3-phase
Fluke 1745: Internal battery for typ. > 5 hours
ride through with intelligent power
Fluke 1743/44: 3 sec Capacitor
Nominal voltage V N
≤ 999 kV with PTs and ratio
Input resistance
App. 820 kΩ per chan. Lx-N Single phase (L1 or
A, L2 or B, L3 or C connected): app. 300 kΩ
Intrinsic uncertainty
0.1 % of V I
Voltage transformer
Ratio: <999 kV / V I
Ration selection
By job programming
Functional Range
Power consumption
Ride through
Display, indicators
Power supply fuse can be replaced in service
facility only. Supply can be connected in
parallel to measuring inputs (up to 660 V)
LEDs for status and voltage levels
Fluke 1745: LC-display with backlight for
voltage, current, active power, phase
Current input with Flexi Set
Input ranges I I L1 or A, L2 or B,
L3 or C, N
15 A / 150 A / 1500 A / 3000 A ac
Capacity 8 MB Flash-EPROM
Measuring range
0.75 A … 3000 A ac
A function > 12000 intervals for > 85 days
with 10 min intervals
P function > 30000 intervals for > 212 days
with 10 min intervals
Intrinsic uncertainty
< 2 % of I I
Position influence
Max. ± 2 % of measured value – for distance
conductor to meas. head > 30 mm
> 13000
Stray field influence
Memory model
linear, circular
< ± 2 A ac for I ext =500 A ac and distance to
measuring head > 200 mm
RS 232, 9600...115 000 Baud, automatic Baud
rate selection, 3-wire communication
Temperature coefficient
< 0.05 % / K
Current transformer
Ratio ≤ 999 kA / I I
Fluke 1745: 282 mm x 216 mm x 74 mm
Fluke 1743/44: 170 mm x 125 mm x 55 mm
Ratio selection
By job programming
3-phase, 3-phase +N, 2 phase L1 or A and L3 or
C (2 W-meter-method) 7 pole connector
Fluke 1745: approx. 3 kg
Fluke 1743/44: approx. 2 kg
Current input for clamp
A/D converter
16 bit, sample rate: 10.24 kHz
Anti-aliasing filter
FIR-Filter, f C = 4.9 kHz
Frequency response
Uncertainty < 1 % of Vm for 40 Hz to 2500 Hz
Interval length
1, 3, 5, 10, 30 s, 1, 5, 10, 15, 60 minutes
Averaging time for
Min/max values
½, 1 mains period, 200 ms,1 , 3 , 5 s
Time base
Resolution: 10 ms (at 50 Hz), deviation: 2s/
day at 23 °C ± 2 K
Input ranges I I L1 or A, L2 or B,
L3 or C, N
0.5 V nominal (for I I ) 1.4 Vpeak
Intrinsic uncertainty
< 0.3 % of I I
Max. overload
10 V ac
Input resistance
App. 8.2 kΩ
Current transformer
Ratio ≤ 999 kA / I I
Ration selection
By job programming
Power systems
Delta, 2-Element Delta, Wye, Single Phase,
Split Single Phase
Intrinsic error
Refers to the reference conditions and is guaranteed for two years
2 years
Recalibration interval
2 years recommended
Quality system
developed, designed, and manufactured according to DIN ISO 9001
Reference conditions
23 °C ± 2 K; 74 °F ± 2 K , Vm=230 V ± 10%,
50 Hz ± 0.1 Hz or 60 Hz ± 0.1 Hz
phase sequence L1, L2, L3
interval length: 10 minutes
Star connection (L1, L2, L3 to N)
Power supply: 88 V … 265 V ac
Environment conditions
Working temp. range
-10 °C to 55°C
Operating temp. range
0 °C to 35°C
Storage temp. range
-20 °C to 60°C
Reference temp. range
23 °C ± 2 K
Relative humidity
Fluke 1745: Class B2 acc. IEC 60654-1
Fluke 1744/43: Class C2 acc. IEC 60654-1
robust, fully insulated housing and accessories
Protection type
Fluke 1745: IP50 as per EN 60529
Fluke 1744/43: IP 65 as per EN 60529
IEC/EN 61010-1 600 V CAT III, 300 V CAT IV, pollution degree 2, double insulation
Type test voltage
5.2 kV rms, 50 Hz / 60 Hz, 5 s
IEC/EN 61326-1, EN55022
IEC/EN 61326-1
Ordering Information
Fluke-1743 Power Quality Logger Memobox
Fluke-1744 Power Quality Logger Memobox
Fluke-1745 Power Quality Logger Memobox
4 Flexible probes 15/150/1500/3000 A with 2 m cable
CD-ROM with PQ Log software
RS232 interface cable and RS232-USB adapter
4 black dolphin clips
Test leads for voltages and power supply
Color localization kit
Carrying bag
Test certificate with measurement values
Printed English manual
Multi-language manual CD
Fluke 1743
Recommended Accessories
•MBX CLAMP 1 A / 10 A:
3-phase current clamps with 2 ranges 1 A/10 A, 2 m cable
•MBX CLAMP 5 A / 50 A + N:
3-phase+N current clamps with 2 ranges 5 A/50 A, 2m cable
•MBX CLAMP 20 A / 200 A + N:
3-phase+N current clamps with 2 ranges 20 A/200 A, 2 m cable
Fluke 1744
Fluke. K
eeping your world
up and running.
Miscellaneous Accessories
• MBX 300 POLESET: Pole mounting kit
Fluke Corporation
P.O. Box 9090
Everett, WA USA 98206
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
For more information call:
In the U.S.A. (800) 443-5853
or Fax (425) 446 -5116
In Europe/M-East/Africa
+31 (0)40 2 675 200
or Fax +31 (0)40 2 675 222
In Canada (905) 890-7600
or Fax (905) 890-6866
From other countries +1 (425) 446 -5500
or Fax +1 (425) 446 –5116
Visit us on the worldwide web at:
Fluke 1745
Fluke (UK) Ltd.
52 Hurricane Way
United Kingdom
Tel.: (020) 7942 0700
Fax: (020) 7942 0701
E-mail: industrial@uk.fluke.nl
Visit us on the worldwide web at:
© Copyright 2006, Fluke Corporation. All rights reserved.
Printed in the Netherlands 06/06
Data subject to alteration without notice.
Pub_ID: 11136-eng
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