Digital CLAMP MULTIMETER
42396
95652
OPERATING INSTRUCTIONS
Due to continuing improvements, actual product may differ slightly from the product described herein.
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3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at http://www.harborfreight.com
Copyright© 2006 by Harbor Freight Tools®. All rights reserved. No portion of this
manual or any artwork contained herein may be reproduced in any shape or form
without the express written consent of Harbor Freight Tools.
To prevent serious injury, Read and understand
all warnings and instructions before use.
For technical questions and replacement parts, please call 1-800-444-3353.
Specifications
AC Amps
Ranges: 200/1000A
Resolution: 100mA/1A
Accuracy: ± 2% rdg +5d @ 50-60 Hz (up to 800A)
± 3% rdg +5d @ 50-60 Hz (above 800A)
Overload Protection: 1200A within 60 seconds
AC Voltage
Range: 750V
Resolution: 1V
Accuracy: ± 1% rdg +4d @ 50-500 Hz
Input Impedance: 9 MW
Overload Protection: 750V AC/DC on all ranges
DC Voltage
Range: 1000V
Resolution: 1V
Accuracy: ± 0.8% rdg +1d
Input Impedance: 9 MW
Overload Protection: 1000V DC/peak AC on all ranges
Resistance
Ranges: 200W/20KW
Resolution: 0.1W/10W
Accuracy: 200W ± 1% rdg +3d
20KW ± 1% rdg +1d
Overload Protection: 500V DC/rms AC on all ranges
Continuity Buzzer (200W range): 50W±25W
Insulation Test
(using 500V insulation
tester, not included)
Ranges: 20MW/2000MW
Resolution: 10KW/1MW
Accuracy: 20MW ± 2% rdg +2d
2000MW ± 4% rdg +2d (up to 500MW)
2000MW ± 5% rdg +2d (above 500MW)
Operating Temperature
Range: 32° - 122° F
Display
1
Reading Rate
3 readings/second
Measurement Method
Dual slope integration
Overload Indicator
Most Significant Digit*(MSD), decimal point and negative sign (if negative reading) shown alone
Battery
One 9 V (included)
Weight
11 oz.
Accessories
Test leads, battery, and carrying case
/2” high 31/2-digit LCD
*Most Significant digit is the digit farthest left.
SKU 42396/95652 For technical questions, please call 1-800-444-3353. Page 2
Save This Manual
You will need the manual for the safety warnings and
precautions, and operating and maintenance procedures.
Keep your invoice with this manual. Write the invoice number
on the inside of the front cover. Keep the manual and invoice
in a safe and dry place for future reference.
Safety Warnings and Precautions
WARNING: When using tool, basic safety precautions should always
be followed to reduce the risk of personal injury and damage to
equipment.
Read all instructions before using this tester!
Test cable voltages with care. Only use one hand when securing the
tester around the cable to reduce risk of injury in case of electric shock.
2.
Avoid working alone. If an accident happens, an assistant can bring
help.
3.
Keep work area clean. Cluttered areas invite injuries.
4.
Avoid electrical shock. Use extreme caution when clamping around
uninsulated conductors or bus bars. Prevent body contact with grounded
surfaces such as pipes, radiators, ranges, and cabinet enclosures when
testing voltages.
5.
Avoid damaging meter. Use only as specified in this manual.
6.
Observe work area conditions. Do not test voltages in damp or wet
locations. Don’t expose to rain. Keep work area well lit.
7.
Keep children away. Children must never be allowed in the work area.
Do not let them handle machines, tools, or extension cords.
8.
Store idle equipment. When not in use, tools must be stored in a dry
location to inhibit rust. Always lock up tools and keep out of reach of
children.
9.
Dress properly. Protective, electrically nonconductive clothes and
nonskid footwear are recommended when working.
10.
Use eye protection. Always wear ANSI approved impact safety goggles.
11.
Do not overreach. Keep proper footing and balance at all times. Do
not reach over or across electrical cables or frames.
12.
Maintain tools with care. Ensure multimeter has a fresh battery.
Inspect tool cords periodically and, if damaged, have them repaired by
an authorized technician.
13.
Stay alert. Watch what you are doing, use common sense. Do not
operate any tool when you are tired.
SKU 42396/95652 For technical questions, please call 1-800-444-3353. Page 3
1.
Check for damaged parts. Before using any tool, any part that appears
damaged should be carefully checked to determine that it will operate
properly and perform its intended function. Check for alignment and
binding of moving parts; any broken parts or mounting fixtures; and any
other condition that may affect proper operation. Any part that is damaged
should be properly repaired or replaced by a qualified technician. Do not
use the tool if any switch does not operate properly.
15.
Replacement parts and accessories. When servicing, use only identical
replacement parts. Use of any other parts will void the warranty. Only
use accessories intended for use with this tool. Approved accessories
are available from Harbor Freight Tools.
16.
Do not operate tool if under the influence of alcohol or drugs. Read
warning labels on prescriptions to determine if your judgment or reflexes
are impaired while taking drugs. If there is any doubt, do not operate the
tool.
17.
Due to the danger inherent in such work, we strongly recommend
that only a licensed electrician work on high-voltage or other
potentially dangerous circuits.
18.
This product contains or produces chemicals, including lead, known
to the State of California to cause cancer and birth defects (or other
reproductive harm).
(California Health & Safety Code § 25249.5, et seq.)
19.
When using the Insulation Tester (not included), carefully follow
all operating instructions and safety precautions outlined in the
documentation provided with it.
Note: Performance of this tool may vary depending on battery condition.
Warning: The warnings, cautions, and instructions discussed in this instruction
manual cannot cover all possible conditions and situations that may
occur. It must be understood by the operator that common sense
and caution are factors which cannot be built into this product, but
must be supplied by the operator.
14.
Unpacking
When unpacking, make sure the following parts are included: Digital
Clamp Multimeter, black and red Test Leads, hand strap, 9V battery, and
carrying case. If any parts are missing or broken, please call Harbor Freight
Tools at the number on the cover of this manual.
SKU 42396/95652 For technical questions, please call 1-800-444-3353. Page 4
Operation
Warning: Electrical shock can cause death or
injury. Avoid touching exposed conductors
of electricity.
1.
2.
3.
4.
5.
Additional Multimeter Precautions
Do not test voltage on circuits higher than 750 volts AC or 1000
volts DC.
Do not test current on circuits higher than 1000 amps.
It is safer to test current using the Transformer Jaws, not with
the test leads. Remove test leads when measuring current.
Be careful not to apply voltage to the Test Leads when they are
connected to the COM (common) and Volt/Ohm Jacks and the
Multimeter is in the Ohms testing setting. Damage can occur
to the multimeter.
Do not switch between testing modes with the multimeter
connected to a circuit.
Control Layout
Volt/ Ohm
Jack
DC Volt
Setting
AC Volt
Setting
1.
2.
Transformer
Jaws
Insulation
Test
Settings
COM
Jack
EXT
Jack
AC Amp
Settings
200 Ohm/
Continuity Setting
20K Ohm
Setting
Data Hold
Data Hold Function
The Data Hold function is used to keep the display reading the same after
the measurement is finished. Press and release the data hold button to
keep displaying the current measurement.
Press and release the Data Hold button again to resume normal operation.
SKU 42396/95652 For technical questions, please call 1-800-444-3353. Page 5
Voltage Measurements
1.
2.
3.
4.
5.
Measure conductors carrying up to 750 VAC (50-500 Hz) or 1000 VDC.
AC Measurements: Turn the Range Selector Switch to ACV 750.
DC Measurements: Turn the Range Selector Switch to DCV 1000.
Plug the red lead into the Volt/Ohm Jack. Plug the black lead into the COM
Jack.
Carefully touch the exposed conductors with the tips of the probes to measure
the voltage (not amperes).
Read measurement.
When testing is complete, switch the multimeter to OFF position, remove
the Test Leads, and store multimeter and test leads in the carrying case.
AC Current Measurements
Measure AC conductors carrying up to 1000 amperes at a frequency 50-60 Hz.
1.
Turn the Range Selector Switch to the ACA 1000 position.
The Test Leads should be removed from the multimeter.
2.
Press the Transformer Jaws open and position the live (hot) conductor of
the test item in the center of the Jaws for greater accuracy. Close the Jaws
and read the measurement.
3.
If the current is less than 200 amperes, set the Range Selector Switch to
the lower range.
4.
When testing is complete, switch the multimeter to OFF position and store
multimeter in the carrying case.
Resistance Measurements
Measure circuit resistance up to 20,000 Ohms.
Warning: Never measure resistance on a circuit with voltage running through it.
1.
Turn the Range Selector Switch to the 200 Ohms position.
2.
Plug the red Test Lead into the Ohms Jack. Plug the black Test Lead into
the Com Jack.
Short the Test Leads together. The meter should read “0” Ohms and you
should hear the continuity buzzer sound.
3.
Touch the exposed conductors with the tips of the Test Leads.
4.
5.
Read measurement.
When testing is complete, switch the multimeter to OFF position, remove
the Test Leads, and store multimeter and test leads in the carrying case.
SKU 42396/95652 For technical questions, please call 1-800-444-3353. Page 6
1.
2.
3.
4.
5.
•
Maintenance
To prevent oxidation, periodically open Transformer Jaws and wipe the
magnetic pole pieces with a lightly oiled cloth.
Wipe unit with a slightly damp cloth using a light detergent. Do not use
solvents or abrasives.
Remove battery if not in use for long periods.
Store unit in the carrying case and place in a dry location.
Other than the battery, there are no replaceable parts on this unit. Repairs
should be done by a qualified technician.
Measurement Applications
•
Household uses – Verify and measure current flow and voltage to such
appliances as electric water heaters, fan motors, generators, and pumps.
Measure excessive current flow on circuits in distribution panels which are
tripping circuit breakers. Check for wire continuity or resistance using the
Test Leads and Ohms function.
Distribution transformers – Measure load on each phase for balance and
for excessive current draw.
Motors – Measure starting current, running current, and current imbalance
between phases.
Variable speed motor controllers – Measure input and output currents.
1.
2.
3.
4.
5.
Remove the Test Leads from the multimeter.
Turn the unit over.
Remove back cover.
Pull battery out of unit and replace.
Replace cover.
•
•
Battery Replacement
NOTE: No internal replacement parts are available for this tool.
SKU 42396/95652 For technical questions, please call 1-800-444-3353. Page 7
90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is
free from defects in materials and workmanship for the period of 90 days from the date of
purchase. This warranty does not apply to damage due directly or indirectly, to misuse,
abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity,
improper installation, normal wear and tear, or to lack of maintenance. We shall in no event
be liable for death, injuries to persons or property, or for incidental, contingent, special
or consequential damages arising from the use of our product. Some states do not allow
the exclusion or limitation of incidental or consequential damages, so the above limitation
of exclusion may not apply to you. This warranty is expressly in lieu of all
other warranties, express or implied, including the warranties of
merchantability and fitness.
To take advantage of this warranty, the product or part must be returned to us with transportation charges prepaid. Proof of purchase date and an explanation of the complaint
must accompany the merchandise. If our inspection verifies the defect, we will either repair
or replace the product at our election or we may elect to refund the purchase price if we
cannot readily and quickly provide you with a replacement. We will return repaired products at our expense, but if we determine there is no defect, or that the defect resulted from
causes not within the scope of our warranty, then you must bear the cost of returning the
product.
This warranty gives you specific legal rights and you may also have other rights which vary
from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353
SKU 42396/95652 For technical questions, please call 1-800-444-3353. Page 8
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