Description
The Fluke 378FC is a heavy-duty, True-RMS non-contact AC/DC clamp meter engineered for industrial electrical systems, medium-voltage distribution maintenance, and advanced preventive diagnostic workflows. Utilizing proprietary FieldSense technology, this instrument facilitates simultaneous voltage and current measurements through the clamp jaw without requiring metallic contact with live conductors. The integrated Power Quality Indicator automatically detects power-related anomalies, specifically highlighting Total Harmonic Distortion (THD) in voltage, current, and power factor to identify upstream grid or downstream load issues.
Industrial Application Scenario
In multi-megawatt processing plants, unexpected motor failures and transformer overheating are frequently caused by excessive harmonic distortion. Maintenance engineers utilize the Fluke 378FC to execute rapid, non-contact diagnostic scanning on crowded 3-phase motor control centers (MCCs). By using the FieldSense jaw, technicians measure voltage and current simultaneously on active busbars without wearing heavy category-rated PPE, minimizing arc flash risk. The iFlex flexible probe is deployed around thick, bunched conductors in tight enclosures to capture up to 2500 A AC. Real-time data syncs via Fluke Connect software, establishing an unalterable digital log for facility compliance audits.
Technical Specifications and Parametric Profile
Measurement Parameters and Range Capabilities:
– AC Voltage (FieldSense, Non-Contact): Range 1000 V; Resolution 1 V; Accuracy ± (3% + 5 counts) at 45 Hz to 66 Hz
– AC Voltage (Test Leads): Range 1000 V; Resolution 0.1 V (up to 600 V) or 1 V (up to 1000 V); Accuracy ± (1% + 5 counts)
– DC Voltage: Range 1000 V; Resolution 0.1 V; Accuracy ± (1% + 5 counts)
– AC Current (Clamp Jaw): Range 999.9 A; Resolution 0.1 A; Accuracy ± (2% + 5 counts)
– DC Current (Clamp Jaw): Range 999.9 A; Resolution 0.1 A; Accuracy ± (2% + 5 counts)
– AC Current (iFlex Flexible Probe): Range 2500 A AC; Resolution 0.1 A (up to 999.9 A) or 1 A (up to 2500 A); Accuracy ± (3% + 5 counts)
– Power Quality Indicator: Detects and displays THD percentage for both voltage and current; displays Power Factor (PF)
– Frequency Measurement: Range 5.0 Hz to 500.0 Hz; Resolution 0.1 Hz; Accuracy ± (0.5% + 5 counts)
– Resistance Measurement: Range 60.00 kOhm; Resolution 0.1 Ohm to 10 Ohm; Accuracy ± (1% + 5 counts)
– Capacitance Measurement: Range 1000 microfarad; Resolution 0.1 microfarad to 1 microfarad; Accuracy ± (1% + 4 counts)
Physical and Environmental Specifications:
– Clamp Jaw Opening: Maximum diameter 34 mm
– iFlex Probe Diameter: Maximum loop diameter 450 mm; cable thickness 7.5 mm
– Enclosure Protection Rating: IP54 per IEC 60529 (dust-protected and splash-resistant)
– Operating Temperature Range: -10 °C to +50 °C
– Storage Temperature Range: -40 °C to +60 °C
– Operating Humidity: Non-condensing up to 90% RH (at 10 °C to 30 °C)
– Safety Standards: IEC 61010-1, IEC 61010-2-032, Pollution Degree 2
– Overvoltage Rating: CAT III 1000 V, CAT IV 600 V
– Electromagnetic Compatibility: EN 61326-1 for industrial environments
– Wireless Interface: Bluetooth Low Energy for Fluke Connect cloud integration
– Battery Configuration: Two AA Alkaline batteries (IEC LR6), typical lifetime 200 hours
– Weight: 463 g (clamp meter unit only)
Original Engineering and Manufacturing Integrity
The Fluke 378FC is built to Fluke OEM specifications, ensuring that internal sensing coils, silicon-steel core jaws, and FieldSense circuitry deliver high-precision performance under severe electromagnetic interference (EMI) environments. System integrators, plant engineers, and maintenance managers can specify this unit to guarantee seamless Technical Compatibility with existing Fluke test fleets and corporate Asset Management Software interfaces.
Sourcing Information
– Technical Compatibility: Operates with Fluke TPAK Magnetic Hangers, iFlex flexible current probes, and all standard CAT III/CAT IV rated test leads.
– Lead Time: Ex-stock items typically ship within 3 to 5 business days. Please contact our industrial sales desk for volume OEM orders and global freight schedules.
Key Attributes
Max. Ac Current: 2500 A
Max. DC Current: 999.9 A
Measuring Voltage Range: 1000 V
Place of Origin: China
Model Number: 378 FC
Brand Name: Fluke
Dimensions: 10.78 x 3.38 x 1.85" (274 x 86 x 47 mm)
Display Type: Digital Only
Max. Ac Voltage: 1000 V
Max. DC Voltage: 1000 V
Measuring Capacitance Range: 1000 uF
Measuring Current Range: 999.9 A
Measuring Inductance Range: ,
Measuring Resistance Range: 60 kΩ, 6000 Ω, 600 Ω
Operating Temperature: 14 to 122°F (-10 to 50°C)
Parameters Measured: DC Current, AC Voltage
Weight: 1.6 kg
Current range: 999.9 A
Voltage range: 1000 V
AC - Flexible Current Probe Range: 2500 A
MV DC Range: 500 mV
Amps Frequency Range: 5 to 500 Hz
Resistance Range: 60 kΩ, 6000 Ω, 600 Ω
Automatic Power Off: 20 minutes
Temperature Operating: 14 to 122°F (-10 to 50°C)
Packaging and Delivery
Selling Units: Single item
Single package size: 32X18X15 cm
Single gross weight: 2.000 kg












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