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Fluke 1742 Three-Phase Power Quality Logger
  • Fluke 1742 Three-Phase Power Quality Logger
  • Fluke 1742 Three-Phase Power Quality Logger
  • Fluke 1742 Three-Phase Power Quality Logger

Fluke 1742 Three-Phase Power Quality Logger

Fluke authorised distributor and calibration house.

Includes: Flexible current probe, USB stick, USB cable, 3PHVL-1730 3-Phase + neutral voltage test lead, Test lead set red/black 0.18 m, Test lead set red/black 1.5 m, Alligator clips, 173 x /174 x Soft Case, Cable marker kit, MP1-3R/1B-Magnet Probe 1 set (3 red, 1 black), 174x-Hanger Kit.

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Power Quality Logger with 60 cm 1,500A iFlex

The Fluke 1742 Power Quality Logger is a compact device for technicians and engineers to troubleshoot, quantify energy usage, and analyse power distribution systems.

The Fluke 1742 is compliant with international standards such as IEC 61000-4 -30 and IEC 62586. The 1742 can simultaneously log up to 500 parameters and capture events to find intermittent and hard-to-find power quality issues.

An optimised user interface, flexible current probes, and an intelligent measurement verification function that allows you to digitally verify and correct connections makes setup easier than ever and reduces measurement uncertainty. Minimize your time in potentially hazardous environments and reduce the hassle of suiting up in PPE by using a wireless connection (WiFi) to view data directly in the field.

The included Energy Analyze Plus software enables thorough analysis of the captured data and reporting according to national and international standards such as EN 50160.


License keys are available as optional accessories. The keys expand the functionality of the Logger with licensed features.


The upgrade license activates the advanced analysis features of the 1746 on a 1742 Logger. Features are:

Voltage and current unbalance.
Voltage and current interharmonics.
Events: Dips, swells, and interruptions.
Events: Rapid voltage change.
Events: Inrush current.
Events: Mains signaling.

The upgrade includes a Magnet Probe Set (3 red, 1 black).


The upgrade license activates the advanced analysis features of the 1748 on a 1742 Logger. Features are:

Voltage and current unbalance.
Voltage and current interharmonics.
Events: Dips, swells, and interruptions.
Events: Rapid voltage change.
Events: Inrush current.
Events: Mains signaling.
Events: Waveform deviation.
Event recordings: RMS profile.
Event recordings: Waveform.
Event recordings: Mains signaling RMS profile.

The upgrade includes a Magnet Probe Set (3 red, 1 black) and a Magnet Hanger Kit.

Fluke 1740 Model Features
1742 Power Logger
1746 Power Logger
1748 Power Logger
Voltage, current, power, power factor, frequency Y Y Y
Energy forward/reverse Y Y Y
Peak Demand Y Y Y
Voltage and current harmonics (to 50th)1
Flicker Y Y Y
Rapid voltage change events1
Interharmonics (to 50th)1
Dips, swells, interruption and transient events tables1
Mains signaling1
Inrush current1
Transients (low frequency)/Waveform deviation events2
Waveform snapshots2
RMS profile2
USB (mini B)
WiFi download Instrument to device Y Y Y
Wifi download via WiFi hub (requires registration) Opt. Opt. Opt.
1Included with 1742-6/UPGRADE option
2Included with 1742-8/UPGRADE or 1746-8/UPGRADE option.
Fluke 1740 Series Specifications
Voltage Range: 1000 V
Maximum resolution: 0.1 V.
Current: Direct input See datasheet.
Frequency Range: 42.5 Hz to 69 Hz
Maximum resolution: 0.01 Hz.
Auxiliary input Range: ±10 V dc
Maximum resolution: 0.1 mV.
Electrical Specifications
Power Supply
Voltage range 100 V to 500 V using safety plug input when powering from the measurement circuit.
100 V to 240 V MA-C8 and using standard power cord (IEC 60320 C7).
Power consumption Maximum 50 VA (max. 15 VA when powered using MA-C8 adapter).
Mains power frequency 50/60 Hz ±15%.
Battery Li-ion 3.7 V, 9.25 Wh, customer-replaceable.
On-battery runtime Typically 4 hours.
Charging time < 6 hours.
Data Acquisition
Resolution 16-bit synchronous sampling.
Sampling frequency 10.24 kHz at 50/60 Hz, synchronized to mains frequency.
Input signal frequency 50/60 Hz (42.5 to 69 Hz).
Circuit types 1-Φ, 1-Φ IT, split phase, 3-Φ delta, 3-Φ wye, 3-Φ wye IT, 3-Φ wye balanced, 3-Φ Aron/Blondel (2-element delta), 3-Φ delta open leg, currents only (load studies).
Data storage Internal flash memory (not user replaceable).
Memory size Typical 20 logging sessions of 4 weeks with 1-minute intervals and 500 events.
Basic Interval
Measured parameters Voltage, current, aux, frequency, THD V, THD A, power, power factor, fundamental power, DPF, energy.
Averaging interval User selectable: 1 sec, 5 sec, 10 sec, 30 sec, 1 min, 5 min, 10 min, 15 min, 30 min.
Averaging time min/max values Voltage, Current: Full cycle RMS updated every half cycle (URMS1/2 according to IEC61000-4-30 Aux, Power: 200ms).
Demand Interval (Energy Meter Mode)
Measured parameters Energy (Wh, varh, VAh), PF, maximum demand, cost of energy.
Interval User selectable: 5 min, 10 min, 15 min, 20 min, 30 min, off.
Power Quality Measurements
Measured parameter Voltage, frequency, unbalance, voltage harmonics, THD V, current, harmonics, THD A, TDD, voltage interharmonics, TID V, current interharmonics, TID A, Flicker, Mains Signaling, under/over deviation.
Averaging interval 10 min for all parameters
2 hrs (long term Flicker PLT)
150/180 cycles (3 s) for harmonics (requires software license IEEE519/REPORT).
Individual harmonics 2nd to 50th harmonic
Grouping according to IEC 61000-4-7 user configurable depending on application: Sub-grouped (harmonics + interharmonics), grouped or harmonic bins only.
Interharmonics 1st to the 50th interharmonic.
Events Voltage: dips, swells, interruptions, current: inrush current
1748: mains signaling, transients (low frequency).
Inrush RMS profile based on 1/2 cycle RMS steady state triggering.
Flicker In accordance with IEC 61000-4-15 and IEEE 1453.
Programmable PQ limits Enables user defined limits for local standards compliance.
USB-A File transfer via USB flash drive, firmware updates, max. supply current: 120 mA.
WiFi File transfer and remote control via direct connection or WiFi infrastructure.
Bluetooth Read auxiliary measurement data from Fluke Connect® 3000 series modules (requires supported USB to BLE or WiFi/BLE adapter, check for availability).
USB-mini Data download device to PC.
Voltage Inputs
Number of inputs 4 (3 phases referenced to neutral).
Maximum input voltage 1000 Vrms, CF 1.7.
Input impedance 10 MΩ.
Measurement category 1000 V CAT III/600 V CAT IV.
Current Inputs
Number of inputs 4 (3 phases and neutral), mode selected automatically for attached sensor.
Input voltage Clamp input: 500 mVrms/50 mVrms; CF 2.8.
Rogowski coil input: 150 mVrms/15 mVrms at 50 Hz, 180 mVrms/18 mVrms at 60 Hz; CF 4 all at nominal probe range.
Auxiliary Inputs
Number of inputs 2 (Analog with auxiliary adapter, or up to 2 BLE devices simultaneously).
Input range 0 to ± 10 V dc, or 0 to ± 1000 V dc (with optional adapter), 1 reading/s.
Displayed units User configurable (7 characters, for example, °C, psi, or m/s).
General Specifications
Operating temperature -25 °C to +50 °C (-13 °F to 122 °F)1.
Enclosure IEC 60529: IP50.
IEC 60529: IP65 with IP65 rated voltage connector.
1Warm up the product to -10 °C (+14 °F) before you power the unit on
Weight Instrument: 1 kg (2.2 lb).
Dimensions 23.0 cm x 18.0 cm x 5.4 cm (9.1 in x 7.1 in x 2.1 in).
Fluke 1742 warranty Two-years (battery not included).
Accessories: one-year.


Fluke 1742-1744-1746 Datasheet

PDF Specifications of the Fluke 1742, 1746 & 1748 Power Quality Loggers.

Download (1.62M)

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Fluke 1742 Three-Phase Power Quality Logger
1742-6/UPGRADE Upgrade 1742 to 1746 functionality (includes magnetic probes). 4920964
1742-8/UPGRADE Upgrade 1742 to 1748 functionality (includes magnetic probes and hanger kit). 4920973
i17XX-Flex6000/4PK Fluke-17xx iFlexi 6000A 36 IN, 4 Pack. 4637430
i17XX-Flex3000/4PK Fluke-17xx iFlexi 3000A 24 IN, 4 Pack. 4637427
i17XX-Flex1500/4PK Fluke-17xx iFlexi 1500A 12 IN, 4 Pack. 4637411
i17XX-flex6000/3pk Fluke-17xx iFlexi 6000A 36 IN, 3 pack. 4637370
i17XX-flex3000/3pk Fluke-17xx iFlexi 3000A 24 IN, 3 pack. 4637355
i17XX-flex1500/3pk Fluke-17xx iFlexi 1500A 12 IN, 3 pack. 4637337
i17XX-flex6000 Fluke-17xx iFlexi 6000A 36 IN. 4637362
i17XX-flex3000 Fluke-17xx iFlexi 3000A 24 IN. 4637343
i17XX-flex1500 Fluke-17xx iFlexi 1500A 12 IN. 4637328
Fluke 17XX-TL 0.18M Test lead set; 1000V CAT III, Non-stack conn; 0.18 m; Red/Blk. 4921125
i40S-EL Fluke-17xx i40s-EL Clamp-on Current Transformer. 4637396
F17XX Cable Markers Cable Marker Kit for 173X an 174X. 4921140

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