Fluke 302+ User manual

PN 4045130
September 2011, Rev.1, 12/13
© 2011, 2013 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
302+/303
Clamp Meter
Users Manual

LIMITED WARRANTY AND LIMITATION OF LIABILITY
This Fluke product will be free from defects in material and workmanship for two
years 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.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
11/99

i
Table of Contents
Title Page
Introduction.................................................................................................................1
How to Contact Fluke ................................................................................................. 1
Safety Information ...................................................................................................... 2
Jaw Maintenance........................................................................................................ 8
How to Clean the Product .......................................................................................... 8
Specifications .............................................................................................................8
Electrical Specifications..........................................................................................8
Mechanical Specifications ...................................................................................... 10
Environmental Specifications .................................................................................10
The Clamp Meter........................................................................................................ 12

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Users Manual
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1
Introduction
The Fluke 302+/303 Clamp Meter (the Product) measures ac and dc voltage, ac current,
resistance, and continuity.
Warning
Read "Safety Information" before you use the Product.
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: [phone]
•Mainland China: [phone]
•Japan: [phone]
•Singapore: [phone]
•Anywhere in the world: [phone]

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Or, visit Fluke's website at www.fluke.com.
To register your product, visit http://register.fluke.com.
To see, print, or download the latest manual supplement, visit
http://us.fluke.com/usen/support/manuals.
Safety Information
A Warning identifies conditions and procedures that are dangerous to the user. A Caution
identifies conditions and procedures that could cause damage to the Product or the
equipment under test.
International electrical symbols used on the Product and in this manual are explained in Table 1.
Warning
To prevent possible electrical shock, fire, or personal injury:
•Carefully read all instructions.
•Use the Product only as specified, or the protection supplied by the
Product can be compromised.
•Use only correct measurement category (CAT), voltage, and amperage
rated probes, test leads, and adapters for the measurement.
•Do not touch voltages > 30 V ac rms, 42 V ac peak, or 60 V dc.

Clamp Meter
Safety Information
3
•Hold the Product behind the tactile barrier. See The Clamp Meter,
item .
•Do not exceed the Measurement Category (CAT) rating of the lowest
rated individual component of a Product, probe, or accessory.
•Do not measure current while the test leads are in the input jacks.
•Do not use the Product around explosive gas, vapor, or in damp or wet
environments.
•Limit operation to the specified measurement category, voltage, or
amperage ratings.
•Do not work alone.
•Do not apply more than the rated voltage, between the terminals or
between each terminal and earth ground.
•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.
•Replace the batteries when the low battery indicator shows to prevent
incorrect measurements.

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Users Manual
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•The battery door must be closed and locked before you operate the
Product.
•Measure a known voltage first to make sure that the Product operates
correctly.
•Remove all probes, test leads, and accessories that are not necessary
for the measurement.
•Use only current probes, test leads, and adapters supplied with the
Product.
•Keep fingers behind the finger guards on the probes.
•Connect the common test lead before the live test lead and remove the
live test lead before the common test lead.
•Remove all probes, test leads, and accessories before the battery door is
opened.

Clamp Meter
Safety Information
5
•Do not use the Product if it is damaged.
•Do not use the Product if it operates incorrectly.
•Do not use test leads if they are damaged. Examine the test leads for
damaged insulation, exposed metal. Check test lead continuity.
•Before each use, examine the Product. Look for cracks or missing
pieces of the clamp housing. Also look for loose or weakened
components. Carefully examine the insulation around the jaws. See The
Clamp Meter, item ①.
•Examine the case before you use the Product. Look for cracks or
missing plastic. Carefully look at the insulation around the terminals.
•Read all safety Information before you use the Product.
•Remove batteries to prevent battery leakage and damage to the Product
if it is not used for an extended period.
•Remove batteries to prevent battery leakage and damage to the Product
if the Product is to be stored above its operating temperature.
•Do not use the Product with pulse width modulated motor controllers.
•Do not use a current measurement as an indication that a circuit is safe
to touch. A voltage measurement is necessary to know if a circuit is
hazardous.

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Users Manual
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Table 1. Symbols
Symbol Meaning Symbol Meaning
AC (Alternating Current) Earth ground
Hazardous voltage. Risk of
electric shock. Risk of Danger. Important information. See
Manual.
Double insulated Conforms to European Union directives.
DC (Direct Current) Conforms to relevant South Korean EMC
Standards.

This product has been tested
to the requirements of
CAN/CSA-C22.2 No. 61010-
1, second edition, including
Amendment 1, or a later
version of the standard
incorporating the same level
of test requirements.

This product complies with the WEEE
Directive (2002/96/EC) 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. Go to Fluke’s website for
recycling information.

Clamp Meter
Safety Information
7
Table 1. Symbols (cont)
Symbol Meaning Symbol Meaning
Battery 
Application around and removal from
HAZARDOUS LIVE conductors is
permitted.
CAT II
MEASUREMENT CATEGORY II is
applicable to test and measuring
circuits connected directly to
utilization points (socket outlets
and similar points) of the low
voltage MAINS installation.
CAT III
MEASUREMENT CATEGORY III is
applicable to test and measuring
circuits connected to the distribution
part of the building’s low-voltage
MAINS installation.
CAT IV MEASUREMENT CATEGORY IV is applicable to test and measuring circuits
connected at the source of the building’s low voltage MAINS installation.

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Users Manual
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Jaw Maintenance
If the Product does not work properly:
1. Inspect the jaw matting surface for cleanliness. If any foreign material (including rust) is
present, the jaw will not close properly and measurement errors will result.
2. Open the jaws and wipe the clamp metal ends with a lightly oiled cloth.
How to Clean the Product
Regularly wipe the case with a damp cloth and mild detergent.
Caution
To prevent damage to the Product, do not use abrasives or solvents to clean
the Product case.
Specifications
Electrical Specifications
AC Current (Jaw)
Range
302+ ........................................................400.0 A
303 ..........................................................600.0 A

Clamp Meter
Specifications
9
Resolution ...............................................0.1 A
Accuracy .................................................1.8 % ±5 digits (45 Hz to 65 Hz)
2.5 % ±5 digits (65 Hz to 400 Hz)
AC Voltage
Range ....................................................600.0 V
Resolution ...............................................0.1 V
Accuracy .................................................1.5 % ±5 digits (45 Hz to 400 Hz)
DC Voltage
Range ....................................................600.0 V
Resolution ...............................................0.1 V
Accuracy .................................................1 % ±5 digits
Resistance
Range .....................................................400.0 Ω/4000 Ω
Resolution ...............................................0.1 Ω/1 Ω
Accuracy .................................................1 % ±5 digits
Continuity Beeper ...................................≤70 Ω

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Users Manual
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Mechanical Specifications
Size (L x W x H) .....................................(207 x 75 x 34) mm
Weight .....................................................265 g
Environmental Specifications
Operating Temperature...........................0 °C to +40 °C
Storage Temp .........................................-30 °C to +60 °C
Operating Humidity .................................Non condensing (<10 °C)
≤90 % RH (at 10 °C to 30 °C)
≤75 % RH (at 30 °C to 40 °C)
(Without Condensation)
Operating Altitude ...................................2000 meters
Storage Altitude ......................................12,000 meters
EMI, EMC................................................Meets all applicable requirements in EN/IEC 61326-1
Electromagnetic Compatibility.................Applies to use in Korea only. Class A Equipment
(Industrial Broadcasting & Communication Equipment) [1]
[1] This product meets requirements for industrial (Class A) electromagnetic wave equipment and the seller
or user should take notice of it. This equipment is intended for use in business environments and is not to
be used in homes.

Clamp Meter
Specifications
11
Temperature Coefficients........................Add 0.1 x specified accuracy for each °C above
28 °C or below 18 °C
Measurement Category ..........................CAT IV 300 V, CAT III 600 V
Safety Compliance..................................EN/IEC 61010-1, Pollution Degree 2
EN/IEC 61010-2-032
EN/IEC 61010-031

IP Rating .................................................IP 30 Per IEC 60529; Non-operating
Batteries..................................................2 AAA, NEDA 24A, IEC LR03

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Users Manual
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The Clamp Meter
300V
CAT
600V
CAT
300V
CAT 600VCAT
303
1
2
gqf008.eps

Clamp Meter
The Clamp Meter
13
20
OFF
ON
gqf001.eps

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Users Manual
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ON
2:00
2:00
gqf002.eps

Clamp Meter
The Clamp Meter
15
300V
CAT
600V
CAT
300V
CAT 600VCAT
303
300V
CAT
600V
CAT
300V
CAT 600VCAT
303
A
gqf003.eps

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Users Manual
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300V
CAT
600V
CAT
300V
CAT 600VCAT
303
V
V
V
V
or
>30 V
gqf004.eps