Fluke 368-FC Operating Manual
368/369
AC Leakage Current Clamp
PN 4635451
November 2015
© 2015 Fluke Corporation. All rights reserved.
Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
LIMITED WARRANTY AND LIMITATION OF LIABILITY
This Fluke product will be free from defects in material and workmanship for one
year from the date of purchase. This warranty does not cover fuses, disposable
batteries, or damage from accident, neglect, misuse, alteration, contamination, or
abnormal conditions of operation or handling. Resellers are not authorized to
extend any other warranty on Fluke’s behalf. To obtain service during the warranty
period, contact your nearest Fluke authorized service center to obtain return
authorization information, then send the product to that Service Center with a
description of the problem.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH
AS FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSED OR IMPLIED.
FLUKE IS NOT LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM ANY CAUSE OR
THEORY. Since some states or countries do not allow the exclusion or limitation of
an implied warranty or of incidental or consequential damages, this limitation of
liability may not apply to you.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
11/99
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
Table of Contents
Title Page
Introduction ................................................................................................................. 1
How to Contact Fluke ................................................................................................. 2
Safety Information ...................................................................................................... 3
Product Overview ....................................................................................................... 8
The Display................................................................................................................. 11
Clean the Product ....................................................................................................... 13
Maintenance ............................................................................................................... 13
Replacement Parts ..................................................................................................... 14
Specifications ............................................................................................................. 15
General ................................................................................................................... 15
Electrical Specifications .......................................................................................... 16
AC Current Measurement ...................................................................................... 17
Environmental Specifications ................................................................................. 18
Safety Specifications .............................................................................................. 19
Product Functions ...................................................................................................... 20
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Introduction
The 368/369 AC Leakage Current Clamp (the Product) is a handheld tool for measurement of
ac leakage current.
Principle of Leakage Current Measurement
Based on the electromagnetic induction principle, the Product has a ring-shape current
transformer comprised of a metal core and coil winding. The current transformer senses the
magnetic field produced by the current or by the vector sum of the currents flowing in the
conductor under test. The current transformer then produces a current proportional to the
current flowing in the conductor.
See the Product Functions section near the end of this manual.
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How to Contact Fluke
To contact Fluke, call one of the following telephone numbers:
• Technical Support USA: 1-800-44-FLUKE (1-800-443-5853)
• Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853)
• Canada: 1-800-36-FLUKE (1-800-363-5853)
• Europe: +31 402-675-200
• Japan: +81-3-6714-3114
• Singapore: +65-6799-5566
• Anywhere in the world: +1-425-446-5500
Or, visit Fluke's website at www.fluke.com.
To register your product, visit http://register.fluke.com.
To view, print, or download the latest manual supplement, visit
http://us.fluke.com/usen/support/manuals.
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AC Leakage Current Clamp
Safety Information
Safety Information
A Warning identifies hazardous conditions and procedures that are dangerous to the user. A
Caution identifies conditions and procedures that can cause damage to the Product or the
equipment under test.
XW Warning
To prevent possible electrical shock, fire, or personal injury:
• Carefully read all instructions.
• Read all safety Information before you use the Product.
• Use the Product only as specified, or the protection supplied by the
Product can be compromised.
• Do not use the Product around explosive gas, vapor, or in damp or wet
environments.
• Before each use, examine the Product. Look for cracks or missing
pieces of the Product housing or output cable insulation. Also look for
loose or weakened components. Carefully examine the insulation around
the jaws. See the Product Overview section, item .
• Do not use the Product if it is damaged.
• Disable the Product if it is damaged.
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• Do not use the Product if it operates incorrectly.
• Comply with local and national safety codes. Use personal protective
equipment (approved rubber gloves, face protection, and flame-resistant
clothes) to prevent shock and arc blast injury where hazardous live
conductors are exposed.
• Do not touch voltages >30 V ac rms, 42 V ac peak, or 60 V dc.
• Limit operation to the specified measurement category, voltage, or
amperage ratings.
• Hold the Product behind the tactile barrier. See the Product Overview
section, item .
• The battery door must be closed and locked before you operate the
Product.
• Replace the batteries when the low battery indicator shows to prevent
incorrect measurements.
• Remove the batteries if the Product is not used for an extended period of
time, or if stored in temperatures above 50 °C. If the batteries are not
removed, battery leakage can damage the Product.
• Do not operate the Product with covers removed or the case open.
Hazardous voltage exposure is possible.
• Repair the Product before use if the battery leaks.
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AC Leakage Current Clamp
Safety Information
• Use only specified replacement parts.
• Have an approved technician repair the Product.
For safe operation of the Product, do not operate within external low
frequency magnetic fields >100 A/m.
WCaution
To avoid damage to the Product:
• Do not subject the jaw to unreasonably strong shock, vibration, or force.
• If dust gets into the top of the jaws, remove it immediately. Do not close
the jaws when dust is trapped in its joints as the sensor may be
damaged.
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