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Fluke 1738 Advanced Power Logger

Features

The Fluke 1738 power logger is ideal for conducting energy studies and more advanced power quality analysis.

  • Key measurements: 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 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 and neutral: With included 4 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.
  • Capture dips, swells, and inrush currents: Includes event waveform snapshot and high resolution RMS profile, along with date, timestamp and severity to help pinpoint potential root causes of power quality issues.
  • Power Quality Health Summary: Summarizes the most important power quality health parameters to provide fast insight into overall electrical system health, indicating whether more detailed analysis and reporting should be done.
  • 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 App: 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 1738 to simultaneously log up to two other measurement parameters, virtually any parameter available on a Fluke Connect wireless digital multimeter.*
  • Energy Analyze Plus application software: Download and analyze every detail of energy consumption and power quality state of health with our automated reporting

Specs

  

Accuracy

Parameter Range Resolution Intrinsic Accuracy at Reference Conditions (% of Reading +% of Full Scale)
Voltage 1000 V 0.1 V ±(0.2% + 0.01%)
Current: Direct input i17xx-flex 1500 12" 150 A 0.1 A ±(1% + 0.02%)
1500 A 1 A ±(1% + 0.02%)
i17xx-flex 3000 24" 300 A 1 A ±(1% + 0.03%)
3000 A 10 A ±(1% + 0.03%)
i17xx-flex 6000 36" 600 A 1 A ±(1.5% + 0.03%)
6000 A 10 A ±(1.5% + 0.03%)
i40s-EL clamp 4 A 1 mA ±(0.7% + 0.02%)
40 A 10 mA ±(0.7% + 0.02%)
Frequency 42.5 Hz to 69 Hz 0.01 Hz ±(0.1%)
Auxillary input ±10 V dc 0.1 mV ±(0.2% + 0.02%)
Voltage min/max 1000 V 0.1 V ±(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 1000 V 0.1 V ≥ 10 V: ±5% of reading
< 10 V: ±0.5V
Current harmonics 2nd to 50th Defined by accessory Defined by accessory ≥ 3% of current range: ±5% of reading
< 3% of current range: ±0.15% of range
Unbalance 100% 0.1% ±0.2

Intrinsic Uncertainty ±(% of reading +% of range)¹

Parameter Influence quantity iFlex1500-12 iFlex3000-24 iFlex6000-36 i40S-EL
150 A / 1500 A 300 A / 3000 A 600 A / 6000 A 4 A / 40 A
Active Power P PF ≥ 0.99 1.2% + 0.005% 1.2% + 0.0075% 1.7% + 0.0075% 1.2% + 0.005%
Active Energy Ea PF ≥ 0.99 1.2% + 0.005% 1.2% + 0.0075% 1.7% + 0.0075% 1.2% + 0.005%
Apparent power S 0 ≤ PF ≤ 1 1.2% + 0.005% 1.2% + 0.0075% 1.7% + 0.0075% 1.2% + 0.005%
Apparent Energy Eap 0 ≤ PF ≤ 1 1.2% + 0.005% 1.2% + 0.0075% 1.7% + 0.0075% 1.2% + 0.005%
Reactive power Q 0 ≤ PF ≤ 1 2.5% of measured apparent power
Reactive Energy Er 0 ≤ PF ≤ 1 2.5% of measured apparent power
Power Factor PF - ±0.025
Displacement Power Factor - ±0.025
DBF/cosϕ - ±0.025
Additional uncertainty in% of range¹ VP-N>250 V 0.015% 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 range 100 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 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 events¹

¹The number of possible logging sessions and logging period depends on user requirements.

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
Averaging interval 10 min
Individual harmonics 2nd to 50th harmonic
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 (Urms1/2 according to IEC61000-4-30)
Waveform of voltage and current

Standards 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 IEEE 1459
Power quality compliance EN50160 (for measured parameters)

Interfaces

USB-A File transfer via USB flash drive, firmware updates
Max. 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 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 10 MΩ
Bandwidth (-3 dB) 42.5 Hz - 3.5 kHz
Scaling 1:1 and variable
Measurement category 1000 V CAT III/600 V CAT IV

Current Inputs

Number of inputs 4, 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
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 (-3 dB) 42.5 Hz - 3.5 kHz
Scaling 1:1 and variable

Auxiliary Inputs

Number of inputs 2
Input range 0 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 inputs 2
Supported modules Fluke Connect® 3000 series
Acquisition 1 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 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 2000 m (up to 4000 m derate to 1000 V CAT II/600 V CAT III/300 V CAT IV)
Storage altitude 12,000m
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 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-inch active matrix TFT, 480 pixels x 272 pixels, resistive touch panel
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

i17xx-flex 1500 12" Flexible Current Probe Specifications

Measuring range 1 to 150 A ac/10 to 1500 A ac
Nondestructive current 100 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 range 0.05% of reading/°C 0.09% of reading/°F
Working voltage 1000 V CAT III, 600 V CAT IV
Probe cable length 305 mm (12 in)
Probe cable diameter 7.5 mm (0.3 in)
Minimum bending radius 38 mm (1.5 in)
Output cable length 2 m (6.6 ft)
Weight 115 g
Probe cable material TPR
Coupling material POM + ABS/PC
Output cable TPR/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, operating 15% to 85% non-condensing
IP rating IEC 60529:IP50

* Reference condition:
  • Environmental: 23 °C ±5 °C, no external electrical/magnetic field, RH 65%
  • Primary conductor in center position

Models


Model Name Description Price
Fluke 1738/B Portable Advanced Power Logger (excludes current probes) Get a Quote
Fluke 1738/EUS Portable Advanced Power Logger EU/US Version Get a Quote
Fluke 1738/INTL Portable Advanced Power Logger International Version Get a Quote
Fluke 1738/WINTL Portable Advanced Logger International Version (with additional power cables) Get a Quote

Software

Power Quality Software Downloads

To ensure your product has the latest software release that include new features, click on the appropriate link below and follow the download instructions.

Fluke 1736 and 1738 Power Logger

Download

Last updated

Fluke Energy Analyze Plus v2.2 (.exe) »
Fluke Energy Analyze Plus application software for download, analysis and reporting. Used with Fluke 1730, 1736 and 1738. (Compatible with Windows 7, 8 and 10).

04/2016

Fluke Energy Analyze Plus v2.2 Release notes (.pdf) »
Fluke Energy Analyze Plus application software for download, analysis and reporting. Used with Fluke 1730, 1736, and 1738. (Compatible with Windows 7, 8 and 10).

04/2016

Fluke 173x v2.0 Firmware File (.bin) »
To upload directly to Fluke 1736 from USB create a directory titled “Fluke1736” on the USB stick and copy the firmware file to that directory location.

To upload directly to Fluke 1738 from USB create a directory titled “Fluke173x”, copy the firmware file to that directory location, and rename it to “173x_firmware_2.0.bin”.

Plug the USB stick into the instrument, if the firmware is a later version than the one on the instrument the automatic update process will proceed. Last updated

Available Licenses*:

  • Free License to implement WiFi Infrastructure connection (on registration)
  • Fluke 1736 to 1738 upgrade
  • IEEE519 Reporting License

 

*Please contact your local Fluke representative for more information.
Firmware v2.0 is the minimum requirement for installation of these licenses.

01/2016


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