Fluke Connect® compatible*: View data locally on the instrument or via Fluke Connect mobile app and desktop software.
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.
The Fluke 1738 Three-Phase Power Logger is designed to give users the information they need to make crucial power qualiy and energy decisions as efficently and quickly as possible. Fluke has paired the 1738 with its Fluke Connect® mobile app and desktop software to give users immediate access to critical information anywhere. Out of the box, the 1738 is capable of automatically capturing and storing more than 500 PQ paramters.
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. Quickly and easily chart and graph measurements with the included Fluke Energy Analyze Plus software package.
Easy to Use
The four current probes are connected separately; the instrument automatically detects and scales the probes. The thin current probes are designed to easily get through tight conductor spacing and are easily set to 150 or 1500 A for high accuracy in nearly any application. An innovative tangle-free flat voltage lead makes connection simple and reliable and the instrument’s intelligent ‘Verify Connection’ feature automatically checks to make sure the instrument is connected correctly and can digitally correct common connection issues without having to disconnect measurement leads. The detachable power supply can be conveniently and safely powered directly from the measured circuit—no more searching for power outlets or having to run multiple extension cords to the logging location.
Analysis and Reporting
Capturing logged data is just one part of the task. Once you have the data, you need to create useful information and reports that can be easily shared and understood by your organization or customers. Fluke Energy Analyze Plus software makes that task as simple as possible. With powerful analysis tools and the ability to create customized reports in minutes you’ll be able to communicate your findings and quickly solve problems so you can optimize system reliability and savings.
In The Box
1738 Power Logger
WiFi/Bluetooth adapter (1738 only)
USB flash drive (4GB)
USB Cable
3PHVL-173 Flat Cable
1x red, 1x black 0.1m cable
1x red, 1x black 1.5m lead
Alligator clips
C173x Soft Case
Color Coding set
i173X- flex1500 12″ (4)
Magnetic Probes (1738 only)
Magnetic hanger kit (1738 only
Line cord
Manuals/Guides
Manuals
Fluke 1736 and 1738 Three-Phase Power Loggers Manual
Fluke Power Logger Calibration Manual
Spec Sheets
Fluke 1736 and 1738 Three-Phase Power Loggers Data Sheet
3540 FC vs 173x Selection Guide
Application Notes
Fluke MP1 Magnet Probe Instruction Sheet
Fluke Harmonics Standards
Fluke A guide to 30 day load studies with Fluke Power and Energy Loggers
Fluke 6 Things you need to do before making power quality measurements
Other
Fluke Power Quality Selection Guide
Manufacturer Specs
Specifications
Accuracy
Parameter Range Max. resolution Intrinsic accuracy at reference conditions
(% of reading + % of full scale)
Voltage 1000 V 0.1 V ± (0.2% + 0.01%)
Current i17xx-flex 1500 12”
150 A
1500 A 0.1 A
1 A ± (1% + 0.02%)
± (1% + 0.02%)
i17xx-flex 3000 24
300 A
3000 A 1 A
10 A ± (1% + 0.03%)
± (1% + 0.03%)
i17xx-flex 6000 36”
600 A
6000 A 1 A
10 A ± (1.5 % + 0.03%)
± (1.5 % + 0.03%)
i40s-EL clamp 4 A
40 A 1 mA
10 m A ± (0.7% + 0.02 %)
± (0.7% + 0.02 %)
Frequency 42.5 Hz to 69 Hz 0.01 H z ± (0.1%)
Aux 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 …50th 1000 V 0.1 V ≥ 10 V: ± 5% of reading
< 10 V: ± 0.5V
Current harmonics 2nd ...
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
150A/1500A iFlex3000-24
300A/3000A iFlex6000-36
600/6000A i40s-EL
4A/40A
Active Power PActive Energy Ea PF = 0.99 1.2% + 0.005% 1.2% + 0.0075% 1.7% + 0.0075% 1.2% + 0.005%
Apparent Power S 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 Reactive Energy Er 0 = PF = 1 2.5 % of measured apparent power
Power Factor PF Displacement Power FactorDPF/cosφ – ± 0.025
Additional uncertainty in % of range1 V P-N > 250 V 0.015% 0.0225% 0.0225 % 0.015%
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-?, 1-? IT, split phase, 3-? delta, 3-? wye, 3-? wye IT, 3-? wye balanced, 3-?
Aron/Blondel (2-element delta), 3-? 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 1
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 ...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
Electrical specifications cont.
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. 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 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 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 42.5 Hz - 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 -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 12,000 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-inch active matrix TFT, 480 pixels x 272 pixels, resistive touch panel
Warranty Instrument and power supply: Two-years (battery not included)
Accessories: one-year
Calibration cycle: two-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
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
Warranty One-year
Model features
1736 Power Logger 1738 Power Logger
FLUKE-1736/B FLUKE-1736/EUS FLUKE-1738/B FLUKE-1738/EUS
Model Power logger basic version Power logger (EU and US) Power logger advanced version Power logger advance version (EU and US)
Functions
PQ Health (EN50160 analysis) Opt. Opt. • •
IEEE 519 reporting Opt. Opt. Opt. Opt.
Fluke Connect ® module support
(up to 2 modules**) Opt. Opt. • •
Recording
Trend • • • •
Waveform Snapshots + RMS profile Opt. Opt. • •
Communication
USB (mini B) • • • •
WiFi download of instrument data • • • •
WiFi download via WiFi access point (requires registration)** Opt. Opt. Opt. Opt.
Included Accessories
WiFi only adapter** - • - -
WiFi and BLE adapter** Opt. Opt. Opt. •
USB flash drive (4GB) • • • •
USB Cable • • • •
3PHVL-173 Flat Cable • • • •
1x red, 1x black 0.1m cable • • • •
1x red, 1x black 1.5m lead • • • •
Alligator clips 4 4 4 4
C173x Soft Case • • • •
Color Coding set • • • •
173x-Hanger kit Opt. Opt. • •
MP1-Magnet Probe Opt. Opt. 4 4
i173X-flex1500 12” Opt. 4 Opt. 4
Line cord EU, UK,
US, AU, BR EU, US, UK EU, UK,
US, AU, BR EU, US, UK
Compatible Optional Accessories
173X- AUX analog adapter • • • •
i17XX-flex1500 12” Current Probe • • • •
i17XX-flex3000 24” Current Probe • • • •
i17XX-flex6000 36” Current Probe • • • •
i40s-EL Current Clamp • • • •
IEEE 519 reporting opt • • • •
1736 to 1738 upgrade
(1736/UPGRADE) • • – –
Tech Specs
Power Measurement/Power Loggers Template
Input(power loggers) Single Phase, Three Phase
Type(Power loggers) Digital, Portable Hand Held
Maximum Current AC 1500 A
Maximum Voltage AC 1000 V
True RMS Yes
Power Quality No
Current Input Channels 4
Voltage Input Channels 4
Measurement Frequency 50 Hz, 60 Hz
Display (Energy Management) Digital, Graphical
Transient Capture No
Displays Waveform Yes
Energy Yes
Phasor Diagrams No
Power Factor (Power Quality) Yes
Harmonics Yes
Total Harmonic Distortion Yes
Current Clamps Included Yes
Blue Tooth Compatable Yes
CAT Rating IV
CAT Voltage Rating (V) 600V
Test Equipment General Attributes
Warranty 2 YEARS
Interfaces I/O Bluetooth, Wifi, USB
Storage Internal Memory
IP Rating IP50
Product Weight 3 LBS
Product Height 9.25 IN
Product Length 16.00 IN
Product Width 11.50 IN
Data Logging Yes
HTS/Schedule B Number 9030.39.0100
ECCN Number EAR99
Calibration Included None
Power Supply Voltage 120V/220V Universal
Country of Origin Romania
Shipping Height 9.25 IN
Shipping Length 16.00 IN
Shipping Width 11.50 IN
