Note: there are two versions of this product available. The two kits are identical apart from one kit does not include any current clamps. You can choose which version of the tester you'd prefer by choosing an option from the dropdown box above.
Please be aware that all images are for the FULL kit with the clamps. These will not be included if you haven't selected the option above.
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.
| 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 |
