1
Introduction
The Fluke 377, 377 FC, 378, and 378 FC Current Clamp (the
Clamp or Product) provides:
• display with two simultaneous measurements (current and
voltage)
• grounding with a single lead
• live measurements with no circuit downtime
• non-contact voltage measurement with Power Quality
Indicator
• wireless connectivity to smartphone for work-orders and
reporting integration with Fluke Connect™ app
The Clamp measures true-rms ac current and voltage, dc current
and voltage, inrush current, resistance, capacitance, frequency,
and dc millivolts.
The included iFlex (detachable, flexible current-probe) expands
the measurement range to 2500 A ac. The iFlex allows
measurements of awkward sized conductors and improved wire
access.
The illustrations in this manual show the 378 FC.
Table 1 is a list of features available for each model.
Table 1. Features by Model
Model 377 378 377 FC 378 FC
BLE for Fluke Connect™ App
••
Power Quality Indicator
••
Phase Rotation
Fluke Connect App Only Fluke Connect App Only
Sequential phase: non-contact voltage
measurement
•• • •
Phase-to-phase voltage calculation
•• • •
True RMS
•• • •
Logging
••
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