Fluke 377 User Manual
Clamp meter
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- Manual (24 pages) ,
- Calibration manual (20 pages) ,
- Calibration manual (19 pages)
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Summary of Contents for Fluke 377
- Page 1 377/377 FC 378/378 FC Clamp Meter Users Manual January 2021 ©2021 Fluke Corporation. All rights reserved. All product names are trademarks of their respective companies.
- Page 2 LIMITED WARRANTY AND LIMITATION OF LIABILITY Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is three years and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in Fluke's opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal conditions of operation or handling.
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Page 3: Table Of Contents
Fluke Connect™ (377 FC/378 FC) ........ - Page 4 Clear Memory (377 FC/378 FC)........
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Page 5: Introduction
Introduction The Clamp measures true-rms ac current and voltage, dc current and voltage, inrush current, resistance, capacitance, frequency, The Fluke 377, 377 FC, 378, and 378 FC Current Clamp (the and dc millivolts. Clamp or Product) provides: The included iFlex (detachable, flexible current-probe) expands •... -
Page 6: Contact Fluke
General safety information is in the printed Safety Information information, go to our website: www.fluke.com. document that ships with the Product and at www.fluke.com. More specific safety information is listed where applicable. To register your product, view, print, or download the latest manual or manual supplement, go to our website. -
Page 7: Before You Start
Clamp Meter Before You Start Before You Start Table 2 is a list of items included with the Product. Use Table 3 to order additional accessories. Table 2. Standard Equipment Item Model Number Description varies Clamp Meter i2500-18 iFlex Flexible Current Probe 18 in (48 cm) ... - Page 8 377/377 FC/378/378 FC Users Manual Table 3. Accessories Model Number Description C550 Tool Bag AC87 Heavy-Duty Bus Bar Clip Set (one pair: red and black) AC89 Heavy-Duty Insulation Piercing Test Clip TL27 Heavy Duty Test Lead Set TL75 Hard Point Test Lead Set (one pair: red and black)
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Page 9: Terms To Know
Verify that Bluetooth is turned on. Fluke Connect™ software (may not be available in all regions) Go to the Fluke Connect App and in the list of connected supports the Clamp to wirelessly connect to a mobile app. The app Fluke tools, select 377 FC/378 FC. -
Page 10: Battery
When batteries are changed, ensure that the calibration seal in the battery compartment is not damaged. If damaged, the Product may not be safe to use. Return the Product to Fluke for replacement of the seal. W Caution To prevent damage to the battery: •... -
Page 11: Features/Controls
Control Knob Display 377/378: @ turn on/turn off the backlight. 377 FC/378 FC: B extends the function selection to yellow items on the control knob. Push >2 s. to turn on/turn off the backlight. Volts/Ohm input terminal ... -
Page 12: Display
Fluke Connect feature is on FieldSense™ measurement Remaining memory (377 FC/378 FC) Inrush measurement Log mode is active (377 FC/378 FC) Hold mode is active MinMax mode is active Battery status ... -
Page 13: Power
Clamp Meter Power Power Backlight The display on the Clamp includes a backlight that improves the Two AA batteries supply power to the Clamp: readability in dim work areas. • To turn on the Clamp, rotate the control knob to a function. FC models: •... -
Page 14: Power-On Options
377/377 FC/378/378 FC Users Manual Power-On Options Push to change a setting. Power-on options allow you to customize the controls: Option Display • Turn off/turn on audible beeper Beeper Enabled bEEP On • Turn off/turn on auto backlight Beeper Disabled bEEP OFF •... -
Page 15: Basic Measurements
Clamp Meter Basic Measurements Basic Measurements Figure 2. Wire Placement XW Warning To prevent possible electrical shock, fire, or personal injury: 3.3 mm Ø • Hold the Product behind the tactile barrier. • Do not measure current while the test leads are in the input jacks. -
Page 16: L1-L2-L3
Push again to show the total voltage between When you use the Fluke Connect mobile app, the Clamp also L3 and L1. indicates the phase rotation as 1-2-3 or 3-2-1 in the three-phase While in the line-to-line mode, you can review each line-to-ground system. -
Page 17: Power Quality Indicator (378/378 Fc)
Resistance/Continuity Fluke Connect software supports the Power Quality indicator. To measure resistance or continuity: The Power Quality indicator sensitivity is adjustable: Turn the control knob to Sensitivity Remove power from the circuit to test. -
Page 18: Capacitance
377/377 FC/378/378 FC Users Manual Capacitance DC Current The Clamp determines capacitance by charging a capacitor with a To measure dc current: known current, measuring the resulting voltage, then calculating Turn control knob to the capacitance. Push to compensate for outside influences. - Page 19 Clamp Meter Basic Measurements Keep the probe coupling >2.5 cm (1 inch) away from the If the iFlex Probe does not work as expected: conductor. • Make sure that the coupling system is connected and closed correctly or look for any damage. If any foreign material is Turn the control knob to present, the coupling system will not close properly.
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Page 20: Measurement Features
377/377 FC/378/378 FC Users Manual Measurement Features MIN/MAX/AVG Measurements Min Max Avg mode captures the minimum, maximum, and This section is about the Clamp features you can use for average readings of a given output signal over an extended time. -
Page 21: Data Logging (377 Fc/378 Fc)
Firmware Update (377 FC/378 FC) Firmware Update (377 FC/378 FC) Data Logging (377 FC/378 FC) The Fluke Connect™ app enables you to log the data Firmware updates are available for Clamps that have the measurements. This app shows measurements from the Fluke Connect™... -
Page 22: Maintenance
377/377 FC/378/378 FC Users Manual Maintenance Service An authorized Fluke Calibration service center should service the The Product does not require routine maintenance. Product at two-year intervals to maintain optimum performance. XW Warning Contact your equipment distributor or authorized Fluke Calibration...
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