Fluke 1736 and 1738 Three-Phase Power Quality Loggers

Fluke 1736 and 1738 Three-Phase Power Quality Loggers

Voltage and current waveforms
Power, power factor, and energy consumption
Harmonics and interharmonics

Description
Additional information
Specifications

Description

The Fluke 1736 and 1738 are robust and versatile three-phase power quality loggers designed to help you diagnose, quantify, and resolve power quality issues. These tools are essential for electrical engineers, technicians, and facility managers who strive for reliable and efficient electrical systems.

Key Features and Benefits:

Comprehensive Power Quality Measurements: Both models provide a wide range of measurements, including:
Voltage and current waveforms
Power, power factor, and energy consumption
Harmonics and interharmonics
Unbalance, flicker, and rapid voltage changes
Power quality disturbances and transients
User-Friendly Interface: The intuitive, color touchscreen interface simplifies setup, data review, and analysis.
Flexible Connectivity: With USB, Wi-Fi, and Bluetooth connectivity, you can seamlessly transfer data and monitor remotely.
Powerful Analysis Software: The included Energy Analyze Plus software empowers you with in-depth analysis, detailed reporting, trend identification, and root cause analysis.
Rugged and Reliable Design: Built to withstand harsh environments, these loggers are durable and reliable.

Model-Specific Capabilities:

Fluke 1736: Ideal for basic power quality assessments and energy audits. It measures fundamental parameters like voltage, current, power, power factor, and energy consumption.
Fluke 1738: Offers advanced power quality logging capabilities, including harmonic and interharmonic analysis, unbalance measurements, and flicker measurements. It’s perfect for more complex power quality investigations.

Additional information

Brand	Fluke

Specifications: Fluke 1736 and 1738 Three-Phase Power Quality Loggers

Specifications
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 E_a	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 E_ap	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 E_r	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	V_P-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
Voltage range	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)
Triggered recordings	Waveform of voltage and current (1738)
Standards Compliance
Harmonics	IEC 61000-4-7: Class 1
Harmonics	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	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	12,000m
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
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)
Weight	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
* Reference condition: Environmental: 23 °C ±5 °C, no external electrical/magnetic field, RH 65% Primary conductor in center position