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Fluke 1738 Three-Phase Advanced Power Logger

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FLUKE-1738
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Fluke 1738 Three-Phase Advanced Power Logger - Full Kit

Fluke 1738 Three-Phase Advanced Power Logger

Powerful and highly reliable, the Fluke 1738 is an advanced power logger ideal for use in load studies, energy assessments, harmonic measurements, voltage and current event capturing and all other power quality applications.

The upgraded, advanced version of Fluke's 1736 power logger, the 1738 includes additional functions. The main inclusions are a PQ health (EN50160) analysis function, support for Fluke Connect optional modules and WiFi download of testing data.

When evaluating power quality, the 1738 proves its worth almost immediately. It'll automatically capture and log over 500 power quality parameters, allowing you to gain a detailed snapshot into where you're losing power and improvements can be made. Everything can be captured, including dips, swells and inrush currents alongside time and date-stamped data for easier referencing.

Thanks to an improved and optimised user interface, the 1738 is much easier to set up than other analysers. Quick, guided graphical setup screens will guide you through making connections, with intelligent verification ensuring that everything is connected up right before testing proceeds. A bright, full-colour touch screen makes it easy to switch through modes and interact with testing data as and when needed.

The Fluke 1738 also has the highest safety rating in the industry: CAT IV 600V and CAT III 1000V for use everywhere from service entrances and beyond.

Optional Fluke Premium Care - 1 Year (UK Only)

Fluke Premium Care - 1-Year at no extra cost! Fluke Premium Care - 1-Year at no extra cost!

  • Accidental damage and repair costs included
  • Expedited calibration and repair
  • Annual tool inspection, calibration, and updating
  • Replacement of damaged accessories (Some limitations apply, see Fluke Terms and Conditions)

Select the Premium Care option in the dropdown box when choosing the model you wish to purchase, only available for users in the UK. Please visit our Blog for more information.

Key Features

  • Automatically capture and log voltage, current, power, harmonics and associated power quality values
  • Fluke Connect compatible - view data locally on the instrument via Fluke Connect mobile app and desktop software
  • Power the instrument directly from the circuit being measured
  • CAT IV 600V and CAT III 1000V safety rated
  • Measure all three phases and neutral using the current probes (not included in /B kit)
  • More than 20 separate logging sessions can be stored directly on the instrument
  • Capture dips, swells and inrush currents - includes event waveform snapshots and high resolution RMS profile alongside date, time stamp and severity
  • Power Quality Health Summary function - summarises most important parameters to provide faster insight into what's causing problems
  • Bright, large-size full colour touchscreen
  • Optimised user interface with quick, guided graphical setup and verify correct connections with the intelligent verification function
  • Complete, in-the-field- setup through the front panel or Fluke Connect app - no need to return to workshop to download
  • Connect other Fluke Connect devices to the 1738 to simultaneously log up to two other measurement parameters
  • Energy Analyse Plus application software - download and analyse every detail of energy consumption and power quality state of health
  • Optional 1-Year Premium Care (UK Only)

What's Included?

  Fluke 1738/B Fluke 1738/EUS Fluke 1738/INTL
Fluke 1738 Three-Phase Advanced Power Logger
Optional 1-Year Premium Care (UK Only) - -
Power Supply  -
Voltage Test Leads
4x Alligator Clips
Soft Case
Energy Analyse Plus Software
Magnetic Hanging Strap
4x Magnetic Voltage Probes
Line Cords
Colour Coding Set
WiFi/BLE Adapter -  -
4x 12-inch 1500A Flexible Current Probe  -

Fluke 1738 Technical Specifications

Accuracy
Parameter Range Max Resolution Intrinsic Accuracy At Reference Conditions
(% of reading + % of full scale)
Voltage 1000V 0.1V ±(0.2% + 0.01%)
Current i17xx-flex 1500 12" 150A
1500A
0.1A
1A
±(1% + 0.02%)
±(1% + 0.02%)
i17xx-flex 3000 24" 300A
3000A
1A
10A
±(1% + 0.03%)
±(1% + 0.03%)
i17xx-flex 6000 36" 600A
6000A
1A
10A
±(1.5% + 0.03%)
±(1.5% + 0.03%)
i40s-EL clamp 4A
40A
1mA
10mA
±(0.7% + 0.02%)
±(0.7% + 0.02%)
Frequency 42.5Hz to 69Hz 0.01Hz ±(0.1%)
Aux Input ±10V DC 0.1mV ±(0.2% + 0.02%)
Voltage Min/Max 1000V 0.1V ±(1% + 0.1%)
Current Min/Max Defined by accessory Defined by accessory ±(5% + 0.2%)
THD On Voltage 1000% 0.1% ±0.5
THD On Current 1000% 0.1% ±0.5
Voltage Harmonics - 2nd to 50th 1000V 0.1V ≥10V: ±5% of reading
<10V: ±0.5V
Current Harmonics - 2nd to 50th Defined by accessory Defined by accessory ≥3% of current range: ±5% of reading
<3% of current range: ±0.1% of range
Unbalance 100% 0.1% ±0.2
Intrinsic Uncertainty ± (% of reading + % of range)¹
Parameter Influence Quantity iFlex 1500-12
150A/1500A
iFlex 3000-24
300A/3000A
iFlex 6000-36
600/600A
i40s-EL
4A/40A
Active Power
Active Energy
PF ≥ 0.99 1.2% + 0.005% 1.2% + 0.0075% 1.7% + 0.0075% 1.2% + 0.005%
Apparent Power
Apparent Energy
0 ≤ PF ≤ 1 1.2% + 0.005% 1.2% + 0.0075% 1.7% + 0.0075% 1.2% + 0.005%
Reactive Power
Reactive Energy
0 ≤ PF ≤ 1 2.5% of measured apparent power
Power Factor
Displacement Power Factor
- - ±0.025
Additional Uncertainly In % of Range V P-N > 250V 0.015% 0.0225% 0.0225% 0.015%

¹Range = 1000V x Irange

Electrical Specifications
Power Supply  
Voltage Range 100V to 500V using safety plug input when powering from the measurement circuit
100V to 240V using standard power cord (IEC 60320 C7)
Power Consumption Maximum 50VA (max 15VA when powered using IEC 60320 input)
Efficiency ≥68.2% (in accordance with energy efficiency regulations)
Maximum No-Load Consumption <0.3W only when powered using IEC 60320 input
Mains Power Frequency 50/60Hz ± 15%
Battery Li-Ion 3.7V, 9.25Wh, customer-replaceable
On-Battery Runtime 4 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 10.24kHz at 50/60Hz, synchronised to mains frequency
Input Signal Frequency 50/60Hz (42.5 to 69Hz)
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  
Measurement 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, 30sec, 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  
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 Parameters Voltage, frequency, unbalance, voltage harmonics, THD V, current, harmonics, THD A, TDD
Averaging Interval 10 min
Individual Harmonics 2nd to 50th
Total Harmonic Distortion Calculated on 50 harmonics
Events Voltage: dips, swells, interruptions
Current: inrush current
Triggered Recordings Full cycle RMS updated every half cycle of voltage and current (Urms 1/2 according to IEC61000-4-30)
Waveform of voltage and current
Standard Compliance  
Harmonics IEC 61000-4-7: Class 1
IEEE 519 (short time harmonics)
Power Quality IEC 61000-4-30 Class S, IEC62586-1 (PQI-S device)
Power IEE 1459
Power Quality Compliance EN50160 (for measured parameters)
Interfaces  
USB-A File transfer via USB flash drive, firmware updates, max. supply current: 120mA
WiFI File transfer and remote control via direct connection or WiFi infrastructure
Bluetooth Read auxiliary measurement data from Fluke Connect 3000 series modules (requires 1738 or 1736 upgrade option)
USB-Mini Data download device to PC
Voltage Inputs  
Number of Inputs 4 (3 phases and neutral)
Maximum Input Voltage 1000 Vrms, CF 1.7
Input Impedance 10MΩ
Bandwidth 42.5Hz to 3.5kHz
Scaling 1:1 and variable
Measurement Category 1000V CAT III/600V CAT IV
Current Inputs  
Number of Inputs 4, mode selected automatically for attached sensor
Input Voltage Clamp input: 500mV rms/50mV rms; CF 2.8
Rogowski Coil Input 150mV rms / 15V mV rms at 50Hz
180mV rms / 18mV rms at 60Hz
CF 4
All at nominal probe range
Range 1 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 42.5Hz to 3.5kHz
Scaling 1:1 and variable
Auxiliary Inputs  
Number of Inputs 2
Input Range 0 to ±10V 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 -10 to 50°C (14 to 122°F)
Storage Temperature -20 to 60°C (-4 to 140°F
With battery: -20 to 50°C (-4 to 122°F)
Operating Humidity 10 °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 Altitude 2000m (up to 4000m derate to 1000V CAT II/600V CAT III/300V CAT IV
Storage Altitude 12000m
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
Colour LCD Display 4.3" active matrix TFT
480 x 272 pixels
Resistive touch panel
Warranty Instrument and power supply: 2 years (battery not included)
Accessories: 1 year
Calibration Cycle: 2 years
Dimensions Instrument: 19.8 cm x 16.7 cm x 5.5 cm (7.8 in x 6.6 in x 2.2 in)
Power supply: 13.0 cm x 13.0 cm x 4.5 cm (5.1 in x 5.1 in x 1.8 in)
Instrument with power supply attached: 19.8 cm x 16.7 cm x 9 cm
(7.8 in x 6.6 in x 3.5 in)
Weight Instrument: 1.1 kg (2.5 lb)
Power supply: 400 g (0.9 lb)
Tamper Protection Kensington lock slot
Accessories related to this product:
Fluke 1738 Power Logger - Datasheet Datasheets Fluke 1738 Power Logger - User Manual Manuals & Guides

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Additional Information
SKU FLUKE-1738
Manufacturer Part Code 4588378