Fluke 3540 FC KIT Three-Phase Power Monitor


Key Features:

  • Monitor three-phase systems and wirelessly streams data to the Fluke Connect Cloud
  • Access and track data as well as receive alarms to a mobile device or PC through Fluke Connect Condition Monitoring software
  • Measures:
    • Single, split, or three-phase loads
    • Current, voltage, and frequency
    • Total harmonic distortion
    • Power including active, non-active power and power factor

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The Fluke 3540 FC KIT is a compact device used to monitor key electrical parameters at three-phase machinery and seamlessly stream data to the Fluke Connect Cloud.


Fluke Connect

Set up and sustain preventive maintenance procedures easily using the Fluke Connect® system of wireless test tools and asset management software.

  • • Improve your ability to prevent or predict machine failures
  • • Make confident decisions with data you can trust and track
  • • Access your infrared images from anywhere, anytime with secure cloud storage
  • • Connect and collaborate with your team – even when you are in different places
  • • Provide more complete information to your maintenance teams
  • • Generate work orders that include measurements and infrared images
  • • Edit and analyze images; create and send reports from your smartphone directly from the field
General specifications
Color LCD display 4.3-inch active matrix color TFT, 480 pixels x 272 pixels, resistive touch panel
Warranty 3540 FC and built-in power supply 2 years (battery not included)
Accessories 1 year
Calibration cycle 2 years
Dimensions (wxhxd) 3540 FC 19.8 cm x 16.7 cm x 5.5 cm (7.8 in x 6.6 in x 2.2 in)
Detachable power supply 13.0 cm x 13.0 cm x 4.5 cm (5.1 in x 5.1 in x 1.8 in)
3540 FC with power supply attached 19.8 cm x 16.7 cm x 9 cm (7.8 in x 6.6 in x 4.0 in)
Weight 3540 FC 1.1kg (2.5 lb)
Power Supply
Tamper protection Kensington lock
Environmental specifications
Operating temperature O °C to 45 °C (32 °F to 113 °F)
Storage temperature <20 °C to +60 °C (-4 °C to +140 °F), with battery: -20 °C to +50 °C (-4 °F to +122 °F)
Operating humidity <10 °C (<50 °F) non condensing
10 °C to 30 °C (50 °F to 86 °F) ≤95 %
30 °C to 40 °C (86 °F to 104 °F) ≤75 %
40 °C to 45 °C (104 °F to 113 °F) ≤45 %
Operating altitude 2000 m (6,500 ft) (up to 4,000 m derate to 1000 V CAT II/600 V CAT III/300 V CAT IV)
Storage altitude 12,000 m (39,000 ft)
IP rating IEC 60529:IP50, in connected condition with protection caps in place
Vibration MIL-T-28800E, Type 3, Class III, Style B
IEC 61010-1 IEC mains input Overvoltage Category II, Pollution Degree 2
Voltage terminals Overvoltage Category IV, Pollution Degree 2
Electromagnetic compatibility (EMC)
International IEC 61326-1: Industrial
Korea (KCC) Class A Equipment (Industrial Broadcasting & Communication Equipment)
USA (FCC) 47 CFR 15 subpart B. This product is considered an exempt device per clause 15.103.
Wireless radio with adapter
Frequency range 2412 MHz to 2462 MHz
Output power <100 mW
Electrical specifications
Single and Three Phase Topologies
Wiring configurations 1-Φ, 1-Φ IT, Split phase, 3-Φ wye, 3-Φ wye IT, 3-Φ wye balanced, 3-Φ delta, 3-Φ Aron/Blondel (2-element delta), 3-Φ delta open leg, 3-Φ high leg delta, 3-Φ delta balanced. Currents only (load studies)
Voltage inputs
Number of inputs 4 (3 phases and neutral)
Maximum input voltage 1000 Vrms (1700 Vpk) phase to neutral
Input impedence 10 MΩ each phase to neutral
Bandwidth 42.5 Hz to 3.5 kHz
Scaling 1:1, variable
Current inputs
Number of inputs 3, mode selected automatically for attached sensor
Current sensor output voltage Clamp 500 mVrms / 50 mVrms; CF 2.8
Rogowski coil 150 mVrms/15 mVrms at 50 Hz, 180 mVrms/18 mVrms at 60 Hz; CF 4; all at nominal probe range
Bandwidth (-3 dB) 42.5 Hz to 3.5 kHz
Scaling 1:1 and variable
Data acquisition
Resolution 16-bit synchronous sampling
Sampling frequency 10.24 kHz at 50/60Hz, synchronized to mains frequency
Input signal frequency Mains 50/60 Hz (42.5 to 69 Hz)
Data storage Internal flash memory (not user replaceable)
Memory size Typical 1 offline logging session of 1 week with 1 second intervals. The number of possible logging sessions and logging period depends on user requirements.
Measured parameters Voltage, current, frequency, THD V, THD A, power, power factor, fundamental power, DPF
Averaging interval 1 s
Total harmonic distortion THD for voltage and current is calculated on 25 harmonics
Calculated min/max values times
Voltage Full cycle RMS (20 ms at 50 Hz, 16.7 ms at 60 HZ)
Current Half cycle RMS (10 ms at 50 Hz, 8.3 ms at 60 Hz)
Power 200 ms
USB-A Firmware updates, max. supply current: 120 mA
Supported modes Direct connection and connection to infrastructure
Security WPA2-AES with pre-shared key
Power supply
Voltage range nominal 100 V to 500 V (85 V min to 550 V max) using safety plug input
Mains power nominal 100 V to 240 V (85 V min to 265 V max) using IEC 60320 C7 input
Power consumption Maximum 50 VA (max. 15 VA when powered using IEC 60320 input)
Standby power <0.3 W only when powered using IEC 60320 input
Efficiency ≥ 68.2 % (in accordance with energy efficiency regulations)
Mains frequency 50/60 Hz ± 15 %
Battery power Li-ion 3.7 V, 9.25 Wh, customer-replaceable
On-battery runtime Up to 4 hr (up to 5.5 hr in energy saving mode)
Charging time <6 hr
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