Fluke 1732 and 1734 Three-Phase Electrical Energy Loggers

  • Fluke 1732 And 1734 Three-Phase Electrical Energy Loggers | Fluke
  • Fluke 1732 And 1734 Three-Phase Electrical Energy Loggers | Fluke

Key features

  • Key measurements: Automatically capture and log voltage, current, power, power factor, energy and associated values
  • Fluke Connect® compatible: View data locally on the instrument, via Fluke Connect mobile app and desktop software or through your facilities’ WiFi infrastructure
  • Convenient instrument powering: Power instrument directly from the measured circuit
  • Highest safety rating in the industry: 600 V CAT IV/1000 V CAT III rated for use at the service entrance and downstream
  • Measure all three phases: With included 3 flexible current probes
  • Comprehensive logging: More than 20 separate logging sessions can be stored on the instruments. In fact, all measured values are automatically logged so you never loose measurement trends. They can even be reviewed during logging sessions and before downloading for real-time analysis
  • Optimized user interface: Quick, guided, graphical setup ensures you’re capturing the right data every time, and the intelligent verification function indicates correct connections have been made, reducing user uncertainty
  • Bright, color touch screen: Perform convenient in-the-field analysis and data checks with full graphical display
  • Optimized user interface: Capture the right data every time with quick, guided, graphical setup and reduce uncertainty about your connections with the intelligent verification function
  • Complete “in-the-field" setup through the front panel or Fluke Connect:No need to return to the workshop for download and setup or to take a computer to the electrical panel
  • Fully integrated logging: Connect other Fluke Connect devices to the Fluke 1734 to simultaneously log up to two other measurement parameters, virtually any parameter available on a Fluke Connect wireless digital multimeter or module*
  • Energy Analyze Plus application software: Download and analyze every detail of energy consumption with our automated reporting

*Not all models are available in all countries. Check with your local Fluke representative.

Get a free demoBuy now

Product overview

The Fluke 1732 and 1734 Three-Phase Electrical Energy loggers introduce a new simplicity to discovering sources of electrical energy waste. Discover when and where energy in your facility is being consumed; from the service entrance to individual circuits. Access and share data remotely with your team via the Fluke Connect® app so you can maintain safer working distances and make critical decisions in real-time, reducing the need for protective equipment, site visits and check-ins.

Profiling energy usage across your facility helps you identify opportunities for energy savings, and provides you with the data you need to act on them. The new Energy Analyze software package allows you to compare multiple data points over time to build a complete picture of energy usage, which is the first step to reduce the cost of your energy bill.

Which three-phase logger is right for you?

Three-phase Energy LoggersThree-phase Power Loggers
Features1732 Energy Logger1734 Energy Logger1736 Power Logger1738 Advanced Power Logger
Load studies
Energy assessments
Neutral Current Measurement (four current channels)
Harmonics measurements
Voltage event capture
Advanced analysis: 
Waveform and Inrush event capture 
PQ Health (EN51060)
Upgrade package*
IEEE519 total harmonic distortion measurementsOptionalOptional
Fully integrated logging with Fluke Connect®Upgrade package*Upgrade package*
Wi-Fi / BluetoothOptionalOptional
Magnetic probe setOptionalOptional
Magnetic hangerOptionalOptional
Connection via WiFi routerRequires FREE software license available upon product registration.Requires FREE software license available upon product registration.

*Upgrade packages are available to upgrade existing 1732 Energy Loggers with the same features of the 1734 Energy logger, and to upgrade existing 1736 Power Loggers with the same features and capabilities of the 1738 Advanced Power Logger. Please note that 1732 and 1734 Energy Loggers cannot be upgraded with the functionality of 1736 and 1738 Power Loggers.
Please ask your distributor for more information about the upgrade package.


ParameterRangeResolutionIntrinsic Accuracy at Reference Conditions (% of Reading +% of Full Scale)
Voltage1000 V0.1 V±(0.2% + 0.01%)
Current: Direct inputi17xx-flex 1500 12"150 A0.1 A±(1% + 0.02%)
1500 A1 A±(1% + 0.02%)
i17xx-flex 3000 24"300 A1 A±(1% + 0.03%)
3000 A10 A±(1% + 0.03%)
i17xx-flex 6000 36"600 A1 A±(1.5% + 0.03%)
6000 A10 A±(1.5% + 0.03%)
i40s-EL clamp4 A1 mA±(0.7% + 0.02%)
40 A10 mA±(0.7% + 0.02%)
Frequency42.5 Hz to 69 Hz0.01 Hz±(0.1%)
Auxillary input±10 V dc0.1 mV±(0.2% + 0.02%)
Voltage min/max1000 V0.1 V±(1% + 0.1%)
Current min/maxDefined by accessoryDefined by accessory±(5% + 0.2%)
THD on voltage1000%0.1%±0.5
THD on current1000%0.1%±0.5
Intrinsic Uncertainty ±(% of reading +% of range)¹
ParameterInfluence quantityiFlex1500-12iFlex3000-24iFlex6000-36i40S-EL
150 A / 1500 A300 A / 3000 A600 A / 6000 A4 A / 40 A
Active Power P PF ≥ 0.991.2% + 0.005%1.2% + 0.0075%1.7% + 0.0075%1.2% + 0.005%
Active Energy EaPF ≥ 0.991.2% + 0.005%1.2% + 0.0075%1.7% + 0.0075%1.2% + 0.005%
Apparent power S0 ≤ PF ≤ 11.2% + 0.005%1.2% + 0.0075%1.7% + 0.0075%1.2% + 0.005%
Apparent Energy Eap0 ≤ PF ≤ 11.2% + 0.005%1.2% + 0.0075%1.7% + 0.0075%1.2% + 0.005%
Reactive power Q0 ≤ PF ≤ 12.5% of measured apparent power
Reactive Energy Er0 ≤ PF ≤ 12.5% of measured apparent power
Power Factor PF-±0.025
Displacement Power Factor-±0.025
Additional uncertainty in% of range¹VP-N>250 V0.015%0.0225%0.0225%0.015%
¹Range = 1000 V x Irange
Reference conditions:
  • Environmental: 23 °C ±5 °C, instrument operating for at least 30 minutes, no external electrical/magnetic field, RH <65%
  • Input conditions: Cosϕ/PF=1, Sinusoidal signal f=50 Hz/60 Hz, power supply 120 V/230 V ±10%.
  • Current and power specifications: Input voltage 1 ph: 120 V/230 V or 3 ph wye/delta: 230 V/400 V Input current: I > 10% of Irange
  • Primary conductor of clamps or Rogowski coil in center position
  • Temperature coefficient: Add 0.1 x specified accuracy for each degree C above 28 °C or below 18 °C
Electrical Specifications
Power Supply
Voltage range100 V to 500 V using safety plug input when powering from the measurement circuit
100 V to 240 V using standard power cord (IEC 60320 C7)
Power consumptionMaximum 50 VA (max. 15 VA when powered using IEC 60320 input)
Efficiency≥ 68.2% (in accordance with energy efficiency regulations)
Maximum no-load consumption< 0.3 W only when powered using IEC 60320 input
Mains power frequency50/60 Hz ±15%
BatteryLi-ion 3.7 V, 9.25 Wh, customer-replaceable
On-battery runtimeFour hours in standard operating mode, up to 5.5 hours in power saving mode
Charging time< 6 hours
Data Acquisition
Resolution16-bit synchronous sampling
Sampling frequency10.24 kHz at 50/60 Hz, synchronized to mains frequency
Input signal frequency50/60 Hz (42.5 to 69 Hz)
Circuit types1-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 storageInternal flash memory (not user replaceable)
Memory sizeTypical 10 logging sessions of 8 weeks with 1-minute intervals and 500 events¹
¹The number of possible logging sessions and logging period depends on user requirements.
Basic Interval
Measured parametersVoltage, current, aux, frequency, THD V, THD A, power, power factor, fundamental power, DPF, energy
Averaging intervalUser selectable: 1 sec, 5 sec, 10 sec, 30 sec, 1 min, 5 min, 10 min, 15 min, 30 min
Averaging time min/max valuesVoltage, Current: Full cycle RMS updated every half cycle Aux, Power: 200ms
Demand Interval (Energy Meter Mode)
Measured parametersEnergy (Wh, varh, VAh), PF, maximum demand, cost of energy
IntervalUser selectable: 5 min, 10 min, 15 min, 20 min, 30 min, off
Standards Compliance
PowerIEEE 1459
USB-AFile transfer via USB flash drive, firmware updates
Max. current: 120 mA
WiFiFile transfer and remote control via direct connection or WiFi infrastructure
BluetoothRead auxiliary measurement data from Fluke Connect® 3000 series modules (requires 1734, or 1732 upgrade option)
USB-miniData download device to PC
Voltage Inputs
Number of inputs4 (3 phases and neutral)
Maximum input voltage1000 Vrms, CF 1.7
Input impedance10 MΩ
Bandwidth (-3 dB)42.5 Hz - 3.5 kHz
Scaling1:1 and variable
Measurement category1000 V CAT III/600 V CAT IV
Current Inputs
Number of inputs3, mode selected automatically for attached sensor
Input voltageClamp input: 500 mVrms/50 mVrms; CF 2.8
Rogowski coil input150 mVrms/15 mVrms at 50 Hz, 180 mVrms/18 mVrms at 60 Hz; CF 4; all at nominal probe range
Range1 A to 150 A/10 A to 1500 A with thin flexible current probe i17XX-flex1500 12"
3 A to 300 A/30 A to 3000 A with thin flexible current probe i17XX-flex3000 24"
6 A to 600 A/60 A to 6000 A with thin flexible current probe i17XX-flex6000 36"
40 mA to 4 A/0.4 A to 40 A with 40 A clamp i40s-EL
Bandwidth (-3 dB)42.5 Hz - 3.5 kHz
Scaling1:1 and variable
Auxiliary Inputs
Number of inputs2
Input range0 to ±10 V dc, 1reading/s
Scale factor (available 2014)Format: mx + b (gain and offset) user configurable
Displayed units (available 2014)User configurable (7 characters, for example, °C, psi, or m/s)
Wireless Connection
Number of inputs2
Supported modulesFluke Connect® 3000 series
Acquisition1 reading/s
Environmental Specifications
Operating temperature-10 °C to +50 °C (14 °F to 122 °F)
Storage temperature-20 °C to +60 °C (-4 °F to 140 °F), with battery: -20 °C to +50 °C (-4 °F to 122 °F)
Operating humidity10 °C to 30 °C (50 °F to 86 °F) max. 95% RH
30 °C to 40 °C (86 °F to 104 °F) max. 75% RH
40 °C to 50 °C (104 °F to 122 °F) max. 45% RH
Operating altitude2000 m (up to 4000 m derate to 1000 V CAT II/600 V CAT III/300 V CAT IV)
Storage altitude12,000m
EnclosureIP50 in accordance with EN60529
VibrationMIL-T-28800E, Type 3, Class III, Style B
SafetyIEC 61010-1
IEC Mains Input: Overvoltage Category II, Pollution Degree 2
Voltage Terminals: Overvoltage Category IV, Pollution Degree 2
IEC 61010-2-031: CAT IV 600 V / CAT III 1000 V
Electromagnetic compatibilityEN 61326-1: Industrial CISPR 11: Group 1, Class A
Korea (KCC): Class A Equipment (industrial broadcasting and communication equipment)
USA (FCC): 47 CFR 15 subpart B. This product is considered an exempt device per clause 15.103
Temperature coefficient0.1 x accuracy specification/°C
General Specifications
Color LCD display4.3-inch active matrix TFT, 480 pixels x 272 pixels, resistive touch panel
WarrantyInstrument and power supply: Two-years (battery not included)
Accessories: one-year
Calibration cycle: two-years
DimensionsInstrument: 19.8 x 16.7 x 5.5 cm (7.8 x 6.6 x 2.2 in)
Power supply: 13.0 x 13.0 x 4.5 cm (5.1 x 5.1 x 1.8 in)
Instrument with power supply attached: 19.8 x 16.7 x 9 cm (7.8 x 6.6 x 3.5 in)
WeightInstrument: 1.1 kg (2.5 lb)
Power supply: 400 g (0.9 lb)
Tamper protectionKensington lock slot
i17xx-flex 1500 12" Flexible Current Probe Specifications
Measuring range1 to 150 A ac/10 to 1500 A ac
Nondestructive current100 kA (50/60 Hz)
Intrinsic error at reference condition*±0.7% of reading
Accuracy 173x + iFlex±(1% of reading + 0.02% of range)
Temperature coefficient over operating temperature range0.05% of reading/°C 0.09% of reading/°F
Working voltage1000 V CAT III, 600 V CAT IV
Probe cable length305 mm (12 in)
Probe cable diameter7.5 mm (0.3 in)
Minimum bending radius38 mm (1.5 in)
Output cable length2 m (6.6 ft)
Weight115 g
Probe cable materialTPR
Coupling materialPOM + ABS/PC
Output cableTPR/PVC
Operating temperature-20 °C to +70 °C (-4 °F to 158 °F) temperature of conductor under test shall not exceed 80 °C (176 °F)
Temperature, non-operating-40 °C to +80 °C (-40 °F to 176 °F)
Relative humidity, operating15% to 85% non-condensing
IP ratingIEC 60529:IP50
* Reference condition:
  • Environmental: 23 °C ±5 °C, no external electrical/magnetic field, RH 65%
  • Primary conductor in center position