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Fluke 1734/EUS Three Phase Electrical Energy Logger, WiFi with current probes

Model: 1734/EUS

Discover when and where energy in your facility is being consumed. Automatically capture and log voltage, current, power, energy and associated values. The WiFi/Bluetooth feature gives you access to share data remotely with your team via Fluke Connect® app so you can maintain safer working distances and make critical decisions in real-time. Includes 3 flexible current probes.

$3,749.99 USD

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Fluke 1734/EUS Offers

Energy logging is now within your reach— discover where you're wasting energy, optimize your facility's energy use and reduce your bill. The three-phase electrical energy logger introduces 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. The purpose of this tool is to make it feasible for a greater variety of licensed electrical professionals to setup and connect the logger, and for a facility manager to review energy usage logs without being a power quality expert. 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.


  • Key measurements: voltage, current, power, power factor and associated values enable energy saving strategies to be implemented
  • Bright, color touch screen: perform convenient in-the-field analysis and data checks with full graphical display
  • Comprehensive logging: all measured values are automatically logged and can be reviewed during logging and before downloading for on the-go analysis. More than 20 separate logging sessions can be stored on the instrument
  • 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
  • Complete 'in-the-field' setup through the front panel: no need to return to the workshop for download and setup or to take a computer to the electrical panel
  • Fluke Connect Enabled: Connect to up to two FC modules for associated analog values and view live data wirelessly for the Fluke 1734
  • Wide range power: power instrument directly from the measured circuit eliminating the need to find a power outlet while allowing the instrument to be secured safely inside electrical panels
  • Two USB ports: one for PC connection and another for fast, simple download to standard USB thumb drives, or other USB devices.
  • Compact size: designed to fit in tight spaces and panels
  • Highest safety rating in the industry: 600 V CAT IV/1000 V CAT III rated for use at the service entrance and downstream
  • Optimized measurement accessories: flat voltage cable and thin flexible current probes ensure easy installation even in tight spaces
  • Battery life: four-hour operating time (backup time) per charge on lithium-ion battery
  • Security: safeguard against theft with a Kensington lock


  • Energy Studies - full range of electrical power and energy parameters
  • Load Studies - simple current only logging for load sizing
  • General Facilities Staff
  • Facilities Engineers
  • Building Managers concerned with Energy Costs
  • Residential/Commercial Electricians
  • Energy Consultants
  • Advanced Energy and Load Studies with connected analog data from Fluke connect modules

How Can The Fluke 1732 and 1734 Work For You

Load Studies
Discover how much energy individual pieces of equipment are consuming when they are operating at minimum and maximum capacity. Check capacity of circuits prior to adding additional loads (various standards exist for this process; in the US the NEC 220-87 is the recommended standard). Load studies can also identify situations where you may be exceeding the allowable load on the circuit or when an agreed peak demand applies from the utility. For convenience, some load studies simply measure current which makes installation of the measuring equipment quick and easy. It is often recommended that load surveys be performed for 30 days so that all typical load conditions are encountered during the test.

Logging Related Analog Measurements
When conducting energy studies, it is useful to log related analog measurements such as temperature,voltage, current or pressure. These variables provide a better overall picture of operating conditions and allow you to correlate asset performance data with energy consumption. Correlating these variables provides more of the data you need to make cost saving performance adjustments. With the Fluke 1734, up to two Fluke Connect wireless modules can be used to capture these measurements, and the values will be automatically logged along with power and energy readings.

Simplified Load Studies
For situations where it's either difficult or impractical to make a voltage connection the simple load study feature allows users to perform a simplified load study by measuring current only. The user can enter the nominal expected voltage to create a simulated power study. For accurate power and energy studies it is required to monitor both voltage and current but this simplified method is useful in certain circumstances.

Use up to two Fluke Connect wireless modules with the Fluke 1734 to capture analog measurements.

Energy Assessments
Quantify energy consumption before, and after improvements, to justify energy saving devices.

Energy Surveys
Users often ask where measurements should be taken for an energy survey. The answer is multiple points within the facility. Start at the main service feeders; compare the power and energy measured here with the readings from the utility meter to ensure you're receiving the correct charges. Then move downstream to the larger loads; these should be easy to identify by the current rating of the electrical panels downstream of the service entrances. Measuring at many points will allow a full picture of energy usage across the facility to be developed. The next question users typically have is how long an energy survey should last. This of course depends on the facility, but it is recommended that you measure for a period that matches a typical facility activity period. If the facility operates over a five day work week with down time on the weekend, a seven day survey will most likely capture typical conditions. If the facility operates at a constant level for 24 hours a day, 365 days a year, a single day could be reasonably representative as long as you avoid a period where there may be planned maintenance. To capture a full picture of the facilities energyusage it is not necessarily required to have measurements made simultaneously at every consumption point in the facility. To get a comprehensive picture, spot measurements can be made and then compared on a sliding time timescale.For example, you could compare the service entrance results from a typical Tuesday between 6:00 am and 12:00 pm with those of a larger load in the facility. Typically there will be some correlation between these profiles.

Power and Energy Logging
When a piece of equipment is operated it instantaneously consumes a specific amount of power in watts (W) or kilowatts (kW). This power is accumulated over the operating time and expressed as energy consumed in kilowatt hours (kWh). Energy is what your electric utility charges for; there will be a standard charge from the utility per kilowatt hour. Utilities may have other additional charges, such as peak demand, which is the maximum power demand over a defined period of time, often 15 or 30 minutes. There may also be power factor charges, which are based on the effects of the inductive or capacitive loads in the facility. Optimizing peak demand and power factor often results in lower monthly electricity bills. The 1733 and Fluke 1734 Three Phase Electrical Energy loggers have the capability to measure and characterize these effects enabling you to analyze the results and save money.

Fluke 1734/EUS Specifications

Range 1000 V
Maximum Resolution 0.1 V
Intrinsic Accuracy at Reference Conditions (% of Reading + % of Full Scale) ±(0.2% + 0.01%)
i17xx-Flex 1500 12”
Range 150 A
1500 A
Maximum Resolution 0.1 A
1 A
Intrinsic Accuracy at Reference Conditions (% of Reading + % of Full Scale) ±(1% + 0.02%)
±(1% + 0.02%)
i17xx-flex 3000 24”
Range 300 A
3000 A
Maximum Resolution 1 A
10 A
Intrinsic Accuracy at Reference Conditions (% of Reading + % of Full Scale) ±(1% + 0.03%)
±(1% + 0.03%)
i17xx-flex 6000 36”
Range 600 A
6000 A
Maximum Resolution 1 A
10 A
Intrinsic Accuracy at Reference Conditions (% of Reading + % of Full Scale) ±(.51% + 0.03%)
±(1.5% + 0.03%)
i40s-EL Clamp
Range 4 A
40 A
Maximum Resolution 1 mA
10 mA
Intrinsic Accuracy at Reference Conditions (% of Reading + % of Full Scale) ±(0.7% + 0.02%)
±(0.7% + 0.02%)
Range 42.5 to 69 Hz
Maximum Resolution 0.01 Hz
Intrinsic Accuracy at Reference Conditions (% of Reading + % of Full Scale) ±(0.1%)
Aux Input
Range ±10 V DC
Maximum Resolution 0.1 mV
Intrinsic Accuracy at Reference Conditions (% of Reading + % of Full Scale) ±(0.2% + 0.02%)
Voltage Min/Max
Range 1000 V
Maximum Resolution 0.1 V
Intrinsic Accuracy at Reference Conditions (% of Reading + % of Full Scale) ±(1% + 0.1%)
Current Min/Max
Range Defined by accessory
Maximum Resolution Defined by accessory
Intrinsic Accuracy at Reference Conditions (% of Reading + % of Full Scale) ±(5% + 0.2%)
THD on Voltage
Range 1000%
Maximum Resolution 0.1%
Intrinsic Accuracy at Reference Conditions (% of Reading + % of Full Scale) ±0.5
THD on Current
Range 1000%
Maximum Resolution 0.1%
Intrinsic Accuracy at Reference Conditions (% of Reading + % of Full Scale) ±0.5
Active Power P
Active Energy Ea
Influence Quantity PF ≥0.99
Apparent Power S
Active Energy Eap
Influence Quantity 0 ≤PF ≤1
Reactive Power Q
Reactive Energy Er
Influence Quantity 0 ≤PF ≤1
Additional Uncertainty in % of Range
Influence Quantity VP-N <250 V
Power Supply
Voltage Range 100 to 500 V using safety plug input when powering from the measurement circuit
100 to 240 V using standard power cord (IEC 60320 C7)
Power Consumption Maximum 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 Frequency 50/60 Hz ± 15%
Battery Li-ion 3.7 V, 9.25 Wh, customer-replaceable
On-Battery Runtime Four hours in standard operating mode, up to 5.5 hours in power saving mode
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 10 logging sessions of 8 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, 5, 10, 30 sec, 1, 5, 10, 15, 30 min
Averaging Time Min/Max Values Voltage, Current: Full cycle RMS updated every half cycle Aux, Power: 200 ms
Demand Interval (Energy Meter Mode)
Measured Parameters Energy (Wh, varh, VAh), PF, maximum demand, cost of energy
Interval User selectable: 5, 10, 15, 20, 30 min, off
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
USB-Mini Data download device to PC
Voltage Inputs
Number of Inputs 4 (3 phases and neutral)
Maximum Input Voltage 1000 V RMS, CF 1.7
Input Impedance 10 MΩ
Bandwidth 42.5 Hz to 3.5 kHz
Scaling 1:1 and variable
Measurement Category 1000 V CAT III/600 V CAT IV
Current Inputs
Number of Inputs 3, mode selected automatically for attached sensor
Input Voltage Clamp input: 500/50 mV rms; CF 2.8
Rogowski Coil Input 150/15 mV rms at 50 Hz
180/18 mV rms at 60 Hz
CF 4
All at nominal probe range
Range 1 to 150 A, 10 to 1500 A with thin flexible current probe i17XX-flex1500 12”
3 to 300 A, 30 to 3000 A with thin flexible current probe i17XX-flex3000 24”
6 to 600 A, 60 to 6000 A with thin flexible current probe i17XX-flex6000 36”
40 mA to 4 A, 0.4 to 40 A with 40 A clamp i40s-EL
Bandwidth 42.5 Hz to 3.5 kHz
Scaling 1:1 and variable
Auxiliary Inputs
Number of Inputs 2
Input Range 0 to ±10 V DC, 1 reading/s
Scale Factor Format: mx + b (gain and offset) user configurable
Displayed Units User configurable (7 characters, for example, °C, psi, or m/s)
Wireless Connection
Number of Inputs 2
Supported Modules Fluke Connect® 3000 series
Acquisition 1 reading/s
Environmental Specifications
Operating Temperature 14 to 122°F (-10 to 50°C)
Storage Temperature −4 to 140°F (-20 to 60°C)
With battery: −4 to 122°F (-20 to 50°C)
Operating Humidity 50 to 86°F (10 to 30°C) max. 95% RH
86 to 104°F (30 to 40°C) max. 75% RH
104 to 122°F (40 to 50°C) max. 45% RH
Operating Altitude 6561.7' (2000 m) up to 13,123.4' (4000 m) derate to 1000 V CAT II/600 V CAT III/300 V CAT IV
Storage Altitude 39,370.1' (12,000 m)
Enclosure IP50 in accordance with EN60529
Vibration MIL-T-28800E, Type 3, Class III, Style B
Safety IEC 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 Compatibility (EMC) EN 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 Coefficient 0.1 x accuracy specification/°C
General Specifications
Color LCD Display 4.3" (109.2 mm) active matrix TFT, 480 x 272 pixels, resistive touch panel
Dimensions Instrument: 7.8 x 6.6 x 2.2" (19.8 x 16.7 x 5.5 cm)
Power supply: 5.1 x 5.1 x 1.8" (13 x 13 x 4.5 cm)
Weight Instrument: 2.5 lbs (1.1 kg)
Power supply: 0.9 lb (400 g)
Click here for complete specifications on the Fluke 1734/EUS

What's included with the Fluke 1734/EUS

  • Energy Logger
  • Power Supply
  • Voltage Test Leads
  • 4 x Alligator Clips
  • 3 x 12" 1500A Flexible Current Probe
  • Soft Case
  • Energy Analyze Plus Software
  • Magnetic Probe Set
  • Magnetic Hanger
  • Magnetic Hanging Strap
  • Magnetic Voltage Probes
  • WiFi/BLE Adapter
  • Line Cords
  • Color Coding Set and Documentation on USB Flash Drive
This product features Fluke Connect Technology

See it. Save it. Share it. All the facts, right in the field.

Fluke engineers have delivered an innovative mobile platform and tool that helps solve everyday problems, allowing you to instantly document measurements, retrieve historical data, and share live measurements with your team. All handled by the Android™ or iOS smart phone you already carry.

Fluke Connect with ShareLive™ video call is the only wireless measurement system that lets you stay in contact with your entire team without leaving the field. The Fluke Connect mobile app is works with over 20 different Fluke products - the largest suite of connected test tools in the world.

Make the best decisions faster than ever before by viewing temperature, mechanical, electrical and vibration measurements for each equipment asset in one place. Get started saving time and increasing your productivity.

Fluke Connect Features:

  • TrendIt™ Graphs: Use graphing to show changes in measurements, allowing you to graph and show problems instantly.
  • EquipmentLog™ History: Access equipment history building a database of equipment health and baselines with cloud backup.
  • ShareLive™ Video Calls: Save, collaborate and share measurements instantly with your team anytime, from anywhere.
  • AutoRecord™ Measurements: Instantly save measurements to your phone with Cloud backup.
  • Fluke Cloud™ Storage: Securely access equipment records anywhere, anytime.

Fluke Connect Benefits:

  • Maximize uptime
  • Minimize maintenance costs
  • Better assessments with accurate records
  • Higher efficiency with less walking around; no notebook and excel needed
  • Share troubleshooting knowledge live
  • Create and share helpful content in the field
  • Access to Fluke digital product manuals means no need to carry manuals in the field
  • Keep organized manually entered measurements

Webinar: Introduction to Portable Precision Power Analyzers with Fluke

This wideband precision analyzer is accurate enough for the lab, yet it's built for the field. Offering you more freedom than ever before to make high accuracy power measurements wherever you need to. Whether in the lab, or in the field. Designed for portability and eliminates the need to carry large, fragile, expensive analyzers into the field, allowing you to make measurements directly at the load in nearly any environment. By measuring directly at the load, you can discover how the equipment operates under real-world conditions, with real-world variables, not just at a test bench or in the lab.
During our 1-hour webinar, we've covered:
- The new Fluke Norma 6000 Power Analyzer for accurate measurements at frequencies from DC to 500kHz.
- It is not a Power Quality Analyzer.
- It is a Power Analyzer for accurate measurements at frequencies from DC to 500kHz.
- It is designed to be used in the field, its rugged, battery-operated, lightweight, and suited to use outside of a laboratory environment.
- You’ll learn why it can help you, where and how it is used.

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Customer Reviews for the Fluke 1734/EUS