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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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ii
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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Table 1 is a list of symbols used on the Product or in this manual.
Table 1. Symbols
W WARNING. RISK OF DANGER.
X WARNING. HAZARDOUS VOLTAGE. Risk of electric shock.
Consult user documentation.
T Double Insulated
,
Ñ
6
Application around and removal from uninsulated hazardous live conductors
is permitted.
Do not operate within external low frequency magnetic fields >100A/m.
Measurement Category III is applicable to test and measuring circuits
connected to the distribution part of the building’s low-voltage MAINS
installation.
AC Leakage Current Clamp
Safety Information
Table 1. Symbols (cont.)
Battery
P Conforms to European Union directives.
) Certified by CSA Group to North American safety standards.
Conforms to relevant Australian EMC standards.
à Conforms to relevant South Korean EMC Standards.
This product complies with the WEEE Directive marking requirements. The
affixed label indicates that you must not discard this electrical/electronic
~
product in domestic household waste. Product Category: With reference to
the equipment types in the WEEE Directive Annex I, this product is classed as
category 9 "Monitoring and Control Instrumentation" product. Do not dispose
of this product as unsorted municipal waste.
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Product Overview
Table 2 and Figure 1 explain the Product features.
Table 2. Features
Keep fingers below the Tactile Barrier.
Push to retain the measured data on the display. When pushed, shows
on the display. When pushed again, data hold is canceled and disappears.
The display shows the measured value (digital reading), unit, function, and low-
battery symbol.
Push to choose the range of ac current (either mA or A). Push and hold
for 2 seconds to turn on the filter.
Push to show the minimum, maximum, and average reading. When pushed,
shows on the display.
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Product Overview
Table 2. Features (cont.)
Push to turn on the display backlight. Push and hold for 2 seconds to turn
on the spotlight. See Spotlight.
Push to turn on or turns off the Product.
Jaw trigger
Push the jaw lock button and the trigger together to unlock the jaw.
Spotlight. See Spotlight.
Jaw
Battery Housing holds the batteries. See Batteries.
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10
10
9
Figure 1. Product Features
1
32 3
4
6
7
8
5
12
hyz002.eps
AC Leakage Current Clamp
The Display
The Display
Table 3 and Figure 2 explain the Product display.
Table 3. Display
Battery Symbol
Main display
The Product is searching for ranges.
Fluke Connect is on. (Available in 368 FC and 369 FC only.)
Min, Max, or Avg reading is showing.
MinMax mode is active.
Hold mode is active.
Filter is active and filters signals from 40 Hz – 70 Hz.
mA AC or A AC
Remaining memory (Available in 368 FC and 369 FC only.)
Product identification number when used with Fluke Connect.
(Available in 368 FC and 369 FC only.)
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5
6
7
8
4
9
3
2
10
1
11
hyz001.eps
Figure 2. Display
AC Leakage Current Clamp
Clean the Product
Clean the Product
Periodically wipe the case with a damp cloth and mild detergent.
W Caution
To avoid damaging the Product, do not use abrasives or solvents to clean the
Product.
1. Inspect the jaw mating surface for cleanliness. If any foreign material is present, the jaw
will not close properly and measurement errors will result.
2. Open the jaws and clean the clamp metal ends with a lightly oiled cloth.
Maintenance
If the Product does not work or perform properly, use these steps to help isolate the problem:
1. Inspect the jaw mating surface for cleanliness. If any foreign material is present, the jaw
will not close properly and measurement errors will result.
2. Verify that the range on the Product is correct.
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Replacement Parts
Replacement parts are listed in Table 4. To order, see How to Contact Fluke.
Table 4. Replacement Parts
Part Description Fluke Part Number
Battery 2AA, NEDA 15A, IEC LR6 376756
Battery door assembly
English 4700598
Chinese 4739829
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AC Leakage Current Clamp
Specifications
Specifications
General
Measurement functions ........................ AC current
Display (LCD) ........................................ Digital reading: 3300 counts, LCD refresh rate
Range selection .................................... mA/A: manual selection
3 mA/30 mA/300 mA: auto selection
3 A/30 A/60 A: auto selection
Battery
Type .................................................... 2 AA, IEC LR6, NEDA 15A, alkaline
Life ...................................................... >150 hours without backlight and spotlight
Maximum conductor diameter ............. 368: 40 mm, 369: 61 mm
Automatic power off ............................. 15 minutes after the last switch operation.
Dimensions
369 .................................................... 116 mm (w) x 257 mm (h) x 46 mm (d)
368 .................................................... 101 mm (w) x 234 mm (h) x 46 mm (d)
4 times/sec
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Weight
369 ...................................................... 600 g
368 ...................................................... 500 g
Electrical Specifications
Reference Conditions ........................... 23 ±5 °C and 80 % RH maximum
A AC Range ........................................... 3 mA, 30 mA, 300 mA, 3 A, 30 A, 60 A
Frequency .............................................. 40 Hz to 1 KHz
Crest Factor ........................................... 3
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AC Leakage Current Clamp
Specifications
AC Current Measurement
Accuracy is specified for 1 year after calibration. Accuracy is given as ±(% reading + digit)
368 369
Range Resolution
[1]
3 mA
0.001 mA 1+5 1+5 1.5+5 1.5+5 0.02+1
Filter On
(40 to 70 Hz)
Filter Off
(40 to 1 kHz)
Filter On
(40 to 70 Hz)
Filter Off
(40 to 1 kHz)
30 mA 0.01 mA 1+5 1+5 1.5+5 1.5+5 0.02+1
300 mA 0.1 mA 1+5 1+5 1.5+5 1.5+5 0.02+1
3 A 0.001 A 1+5 1+5 1.5+5 1.5+5 0.02+1
30 A 0.01 A 1+5 1+5 1.5+5 1.5+5 0.02+1
60 A 0.1 A 2+5 2+5 2+5 2+5 0.02+1
[1] The minimum value is 10 μA rms.
T.C./°C
Outside
18 °C to 28 °C
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Environmental Specifications
Operating temperature ......................... -10 °C to +50 °C
Storage temperature ............................. -40 °C to +60 °C
Operating humidity
(without condensation)......................... Non condensing (<10 °C)
Ingress Protection ................................ IEC 60529: IP30 with jaw closed
Operating Altitude ................................. 2,000 m
Storage Altitude .................................... 12,000 m
Current Sensor Operating Class ......... IEC 61557-13: Class 1, ≤100 A/m
Electromagnetic Compatibility (EMC)
International .................................. IEC 61326-1: Industrial Electromagnetic Environment
Group 1: Equipment has intentionally generated and/or uses conductively-coupled radio
frequency energy that is necessary for the internal function of the equipment itself.
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90 % RH (10 °C to 30 °C)
75 % RH (30 °C to 40 °C)
45 % RH (40 °C to 50 °C)
CISPR 11: Group 1, Class B
AC Leakage Current Clamp
Specifications
Class B: Equipment is suitable for use in domestic establishments and in establishments
directly connected to a low voltage power supply network which supplies buildings used
for domestic purposes.
Emissions that exceed the levels required by CISPR 11 can occur when the equipment
is connected to a test object.
Korea (KCC) ................................... Class A equipment (Industrial Broadcast &
Class A: Equipment meets requirements for industrial electromagnetic wave equipment
and the seller or user should take notice of it. This equipment is intended for use in
business environments and not to be used in homes.
USA (FCC) ...................................... 47 CFR 15 subpart B. This product is considered an
Communications Equipment)
exempt device per clause 15.103.
Safety Specifications
Safety
General ............................................. IEC61010-1: Pollution degree 2
Measurement .................................... IEC61010-2-032: CAT III 600V
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Product Functions
Auto Power Off Backlight
15 Min
20
2 Min
hyz003.eps
AC Leakage Current Clamp
Specifications
hyz004.eps
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Measure
22
1
2
Single-Phase
Two-Wire Circuit
Single-Phase
Three-Wire or
Three-Phase
Three-Wire Circuit
Load
Load
3
Insert only one of the wires through the jaws.
Load
Grounding Wire
• Example of Load Current
Measurement
Load
hyz005.eps
AC Leakage Current Clamp
Specifications
Spotlight
hyz006.eps
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Batteries
1
24
2
+
+
hyz007.eps
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