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Fluke 3540 FC Three-Phase Power Monitor and Condition Monitoring Kit

The Fluke 3540 FC Three-Phase Power Monitor measures critical parameters on three-phase systems and wirelessly streams data to the Fluke Connect® Cloud. You can access and track data as well as receive alarms to a mobile device or PC through Fluke Connect Condition Monitoring software.

  • 3540 FC
  • Overview

    The 3540 FC Three-Phase Power Monitor and Condition Monitoring Kit is a combination of three-phase monitoring and Fluke Connect® Condition Monitoring software. The power monitor is a compact device used to monitor key electrical parameters and seamlessly stream data to the Fluke Connect Cloud. Once in the cloud, the software allows maintenance teams to remotely view data anytime, anywhere. Users can graph asset data to discover measurement trends and send alarms when values are outside user-set thresholds.


    • Single, split, or three-phase loads
    • Current, voltage, and frequency
    • Total harmonic distortion
    • Power including active, non-active power and power factor
  • See trends and fluctuations
    See data real-time and historical data in graphs to quickly identify trends and fluctuations.

    Receive alerts and alarms to your mobile device
    Set thresholds for acceptable measurements and receive alarms if values fall outside those thresholds.

    Continue logging when no cloud connection is available
    Select the local logging mode to continue to log measurements when no connection to the Fluke Connect Cloud is available. Logged data can be transferred to the cloud using the Fluke Connect mobile app on a smartphone or tablet.

  • 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
    • Model
      Model Name Description  
      Fluke 3540 FC Three-Phase Power Monitor and Condition Monitoring Kit