Fluke 1738 Advanced Power Logger

Fluke 1738 Advanced Power Logger
Fluke 1738 Advanced Power Logger
 
Specifications
Accuracy
ParameterRangeResolutionIntrinsic Accuracy at Reference Conditions (% of Reading +% of Full Scale)
Voltage1000 V0.1 V±(0.2% + 0.01%)
Current: Direct inputi17xx-flex 1500 12"150 A0.1 A±(1% + 0.02%)
1500 A1 A±(1% + 0.02%)
i17xx-flex 3000 24"300 A1 A±(1% + 0.03%)
3000 A10 A±(1% + 0.03%)
i17xx-flex 6000 36"600 A1 A±(1.5% + 0.03%)
6000 A10 A±(1.5% + 0.03%)
i40s-EL clamp4 A1 mA±(0.7% + 0.02%)
40 A10 mA±(0.7% + 0.02%)
Frequency42.5 Hz to 69 Hz0.01 Hz±(0.1%)
Auxillary input±10 V dc0.1 mV±(0.2% + 0.02%)
Voltage min/max1000 V0.1 V±(1% + 0.1%)
Current min/maxDefined by accessoryDefined by accessory±(5% + 0.2%)
THD on voltage1000%0.1%±0.5
THD on current1000%0.1%±0.5
Voltage harmonics 2nd to 50th1000 V0.1 V≥ 10 V: ±5% of reading
< 10 V: ±0.5V
Current harmonics 2nd to 50thDefined by accessoryDefined by accessory≥ 3% of current range: ±5% of reading
< 3% of current range: ±0.15% of range
Unbalance100%0.1%±0.2
Intrinsic Uncertainty ±(% of reading +% of range)¹
ParameterInfluence quantityiFlex1500-12iFlex3000-24iFlex6000-36i40S-EL
150 A / 1500 A300 A / 3000 A600 A / 6000 A4 A / 40 A
Active Power P PF ≥ 0.991.2% + 0.005%1.2% + 0.0075%1.7% + 0.0075%1.2% + 0.005%
Active Energy EaPF ≥ 0.991.2% + 0.005%1.2% + 0.0075%1.7% + 0.0075%1.2% + 0.005%
Apparent power S0 ≤ PF ≤ 11.2% + 0.005%1.2% + 0.0075%1.7% + 0.0075%1.2% + 0.005%
Apparent Energy Eap0 ≤ PF ≤ 11.2% + 0.005%1.2% + 0.0075%1.7% + 0.0075%1.2% + 0.005%
Reactive power Q0 ≤ PF ≤ 12.5% of measured apparent power
Reactive Energy Er0 ≤ PF ≤ 12.5% of measured apparent power
Power Factor PF-±0.025
Displacement Power Factor-±0.025
DBF/cosϕ-±0.025
Additional uncertainty in% of range¹VP-N>250 V0.015%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
 

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  • Product Code: Fluke 1738 / BASIC
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Electrical Specifications
Power Supply
Voltage range100 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 consumptionMaximum 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 frequency50/60 Hz ±15%
BatteryLi-ion 3.7 V, 9.25 Wh, customer-replaceable
On-battery runtimeFour hours in standard operating mode, up to 5.5 hours in power saving mode
Charging time< 6 hours
Data Acquisition
Resolution16-bit synchronous sampling
Sampling frequency10.24 kHz at 50/60 Hz, synchronized to mains frequency
Input signal frequency50/60 Hz (42.5 to 69 Hz)
Circuit types1-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 storageInternal flash memory (not user replaceable)
Memory sizeTypical 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 parametersVoltage, current, aux, frequency, THD V, THD A, power, power factor, fundamental power, DPF, energy
Averaging intervalUser selectable: 1 sec, 5 sec, 10 sec, 30 sec, 1 min, 5 min, 10 min, 15 min, 30 min
Averaging time min/max valuesVoltage, Current: Full cycle RMS updated every half cycle (URMS1/2 according to IEC61000-4-30 Aux, Power: 200ms
Demand Interval (Energy Meter Mode)
Measured parametersEnergy (Wh, varh, VAh), PF, maximum demand, cost of energy
IntervalUser selectable: 5 min, 10 min, 15 min, 20 min, 30 min, off
Power Quality Measurements
Measured parameterVoltage, frequency, unbalance, voltage harmonics, THD V, current, harmonics, THD A, TDD
Averaging interval10 min
Individual harmonics2nd to 50th harmonic
Total harmonic distortionCalculated on 50 harmonics
EventsVoltage: dips, swells, interruptions, current: inrush current
Triggered recordingsFull cycle RMS updated every half cycle of voltage and current (Urms1/2 according to IEC61000-4-30)
Waveform of voltage and current
Standards Compliance
HarmonicsIEC 61000-4-7: Class 1
IEEE 519 (short time harmonics)
Power qualityIEC 61000-4-30 Class S, IEC62586-1 (PQI-S device)
PowerIEEE 1459
Power quality complianceEN50160 (for measured parameters)
Interfaces
USB-AFile transfer via USB flash drive, firmware updates 
Max. current: 120 mA
WiFiFile transfer and remote control via direct connection or WiFi infrastructure
BluetoothRead auxiliary measurement data from Fluke Connect® 3000 series modules (requires 1738 or 1736 upgrade option)
USB-miniData download device to PC
Voltage Inputs
Number of inputs4 (3 phases and neutral)
Maximum input voltage1000 Vrms, CF 1.7
Input impedance10 MΩ
Bandwidth (-3 dB)42.5 Hz - 3.5 kHz
Scaling1:1 and variable
Measurement category1000 V CAT III/600 V CAT IV
Current Inputs
Number of inputs4, mode selected automatically for attached sensor
Input voltageClamp input: 500 mVrms/50 mVrms; CF 2.8
Rogowski coil input150 mVrms/15 mVrms at 50 Hz, 180 mVrms/18 mVrms at 60 Hz; CF 4; all at nominal probe range
Range1 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
Scaling1:1 and variable
Auxiliary Inputs
Number of inputs2
Input range