Fluke 1743 Basic Power Quality Logger

Fluke 1740 Series three-phase power quality loggers are everyday power meters for technicians who troubleshoot and analyze power quality issues, and monitoring for events, these power loggers help uncover intermittent and hard-to-find power quality issues.


Fluke 1743 is more than capable of simultaneously logging up to 500 power parameters for up to 85 days.

Fluke 1740 Series three-phase power quality loggers are everyday power meters for technicians who troubleshoot and analyze power quality issues and monitoring for events.

these power loggers help uncover intermittent and hard-to-find power quality issues.

The included PQ Log software quickly assesses the quality of power at the service entrance, substation, or at the load, according to the latest EN50160 standard.

View graphs and generate reports with Fluke PQ Log software
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 the graphical and tabular form, export it to a spreadsheet, or generate a professional report with the Report Writer function.


  • Measurement of common power parameters: V, A, W, VA, VAR, PF, energy, flicker, voltage events, and THD
  • Dust/water resistance: IP65 water proof
  • Wide range current measurement accessories for direct measurement or via installed current transformers.
  • LED Status display
  • 3 seconds UPS ride-through
  • Dimensions (H x W x D): 170 x 125 x 55 mm (6.9 x 5.1 x 2.2 in)


General Data
Intrinsic error Refers to the reference conditions and is guaranteed for two years
Warranty 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
Wye connection (L1, L2, L3 to N)
Power supply 88 V … 265 V AC
Environment conditions Working temp. range -10°C to 55°C; 14°F to 131°F
Operating temp. range 0°C to 35°C; 32°F to 95°F
Storage temp. range -20°C to 60°C; -4°F to 140°F
Reference temp. range 23°C ±2 K; 74°F ±2 K
Relative humidity Class C2 acc. IEC 60654-1
Housing robust, fully insulated housing and accessories
Protection type IP65 as per EN 60529
Safety 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
EMC Emission IEC/EN 61326-1, EN55022
Immunity IEC/EN 61326-1
Voltage and Current Measurement
Input voltage Input range VI P-N max 480 V AC
Input range VI P-P max 830 V AC
Max. overload voltage 1.2 VI
Input range selection By job programming
Connections P-P or P-N, 1- or 3-phase
Nominal voltage VN ≤ 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 uncenrtainty 0.1% of VI
Voltage transformer Ratio: < 999 kV / VI
Ration selection By job programming
Current input with Flexi Set Input ranges II L1 or A, L2 or B, L3 or C, N 15 A / 150 A / 1500 A / 3000 A AC
Measuring range 0.75 A … 3000 A AC
Intrinsic uncertainty < 2% of II
Position influence Max. ±2% of measured value – for distance conductor to meas. head > 30 mm
Stray field influence < ±2 A AC for Iext = 500 A AC and distance to measuring head > 200 mm
Temperature coefficient < 0.05% / K
Current transformer Ratio ≤ 999 kA / II
Ratio selection By job programming
Connection 3-phase, 3-phase +N, 2 phase L1 or A and L3 or C (2 W-meter-method) 7 pole connector
Current input for clamp Input ranges II L1 or A,
L2 or B, L3 or C, N
0.5 V nominal (for II) 1.4 Vpeak
Intrinsic uncertainty < 0.3% of II
Max. overload 10 V AC
Input resistance App. 8.2 kΩ
Current transformer Ratio Ω 999 kA / II
Power systems Delta, 2-Element Delta, Wye, Single Phase, Split Single Phase
Power supply Functional Range 88 V to 660 V absolute, 50 Hz / 60 Hz
100 V to 350 V DC Internal fuse: 630 mA T
Power consumption 5 Watts
Ride through 3 sec Capacitor
Fuse Power supply fuse can be replaced in service facility only. Supply can be connected in parallel to measuring inputs (up to 660 V)
Display, indicators LEDs for status and voltage levels
Memory Capacity 8 MB Flash-EPROM
Intervals A function > 12000 intervals for > 85 days with 10 min intervals
P function > 30000 intervals for > 212 days with 10 min intervals
Events > 13000
Memory model linear, circular
Interface RS 232, 9600…115 000 Baud, automatic Baud rate selection, 3-wire communication
Dimensions 170 x 125 x 55 mm (69 x 51 x 22 in)
Weight approx. 2 kg
Measurement A/D converter 16 bit, sample rate: 10.24 kHz
Anti-aliasing filter FIR-Filter, fc = 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: 2 s/day at 23°C; 74°F ±2 K


  • 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
  • Test leads for voltages and power supply
  • 4 black dolphin clips
  • Color localization kit
  • Carrying bag
  • Test certificate with measurement values
  • Printed English manual
  • Multi-language manual CD
  • Power Quality Logger Memobox


Fluke 1743 Basic Power Quality Logger – Catalog    Download


Current clamps
I1A/10A Clamp PQ4 I1A/10A Clamp PQ4
I5A/50A Clamp PQ4 I5A/50A Clamp PQ4
Rack Mounts Hardware
1743/44 Poleset 1743/44 POLESET Mounting Kit for Fluke 1743/1744
Test Leads
VL1735/45 VL1735/45 Banana 4-Phase voltage lead set for Fluke 1735/45


There are no reviews yet.

Be the first to review “Fluke 1743 Basic Power Quality Logger”

Your email address will not be published. Required fields are marked *