PN 3950028 January 2011
© 2011 Fluke Corporation. All rights reserved. All product names are trademarks of their
respective companies. Product specications are subject to change without notice.
i40s-PR 1750 40A
AC Current Clamp
Instruction Sheet
Introduction
The i40s-PR 1750 40A AC Current Clamp operates with the Fluke 1750 Power
Recorder. It supplies accurate nonintrusive measurement of ac current. The probe
has a current range from 0.05 A to 40 A. The frequency range is 40 Hz to 5 kHz. The
clamp is approved for CAT III 600 V.
Contacting Fluke
To contact Fluke, call:
USA: 1-888-44-FLUKE (1-888-443-5853)
Canada: 1-800-36-FLUKE (1-800-363-5853)
Europe: +31 402-675-200
Japan: +81-3-3434-0181
Singapore: +65-738-5655
Anywhere in the world: +1-425-446-5500
USA Service: 1-888-99-FLUKE (1-888-993-5853)
Or, visit Fluke’s website at www.uke.com.
To register your product, visit http://register.uke.com.
Safety Information
Safety Information
To prevent electrical shock or personal injury:
●Carefully read all instructions.
● Use the product only as specied, or the protection supplied by the
product can be compromised.
●Comply with local and national safety codes. Use personal protective
equipment (approved rubber gloves, face protection, and ame-resistant
clothes) to prevent shock and arc blast injury where hazardous live
conductors are exposed.
● Hold the product behind the tactile barrier.
● Before each use, examine the product. Look for cracks or missing pieces
of the clamp housing or output cable insulation. Also look for loose or
weakened components. Carefully examine the insulation around the jaws.
● Do not exceed the Measurement Category (CAT) rating of the lowest rated
individual component of a product, probe, or accessory.
●Use the Clamp only on insulated conductors.
● Use caution around bare conductors or bus bars.
●Do not touch the conductor.
● Do not touch voltages > 30 V ac rms, 42 V ac peak, or 60 V dc.
● Do not use the product around explosive gas, vapor, or in damp or wet
environments.
For more information about the category rating, see the 1750 Power Recorder
Getting Started Guide.
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.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
11/99
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Symbols
Do not apply around or remove from HAZARDOUS LIVE
conductors.
Product is protected by double insulation.
Risk of Danger. Important information. See Instruction Sheet.
Risk of Electric Shock.
Canadian Standards Association has certied that the product
meets applicable U.S. and Canadian Standards.
Conforms to relevant European Union directives.
Safety Specications
Category Rating: CAT III 600 V per IEC/EN61010-1, Pollution Degree 2
Complies with U.S. and Canadian Standards CAN/CSA C22.2
No. 61010-1-04 and No. 61010-2-032-04; UL61010-1
IEC 61010-1 2nd Edition IEC 61010-02-032
EMC: EN 61326-1, FCC for emission and immunity
Electrical Characteristics
Nominal current in 40 A ac r.m.s.
Overload up to 200 A r.m.s.
Conductor position inuence <0.5 % of range at 50/60 Hz
Error due to adjacent conductor ≤15 mA / A at 50/60 Hz
Frequency range 40 Hz to 5 kHz (-3 dB)
Temperature coefcient 0.015 % of range / °C
Maximum working voltage
(see Safety section) 600 V ac r.m.s. or dc
Crest Factor ≤3, add 0.7 % to accuracy
Output 50 mV/A
General Characteristics
Maximum conductor size 15 mm diameter,
bus bar 15 x 17 mm
Cable length 2.5 m
Operating temperature range -10 °C to +55 °C
Storage temperature range -20 °C to +70 °C
Operating humidity 15 % to 85 % r.h.
(non condensing)
Dimensions 4.33 in x 1 in x 2 in (110 mm x 26
mm x 50 mm)
Weight 0.6 lb (0.28 kg)
Connector LEMO / Redel 6 pin plug
Altitude 2000 m maximum
Accuracy (at 50 Hz)
Accuracy (48 Hz to 65 Hz)
0.125 A to 2.5 A ±2.5 %
2.5 A to 12.5 A ±1.5 %
12.5 A to 40 A ±1.0 %
Phase Shift (48 Hz to 65 Hz)
0.125 A to 2.5 A Unspecied
2.5 A to 40 A <1.5 ° typical
Reference Conditions
Environment temperature range +18 °C to +26 °C
Humidity 20 to 75 % r.h.
Current sinusoidal waveform, 48 to 65 Hz,
distortion factor: <1 %, no DC component
Load impedance for voltage output ≥1 MOhm, <100 pF
Measurements
For the best measurement:
• Put the conductor in the center of the Current Clamp jaw.
• Make sure that the Current Clamp is perpendicular to the conductor.
• Do not measure while near other current carrying conductors.
Operation
Warning
To prevent electrical shock or personal injury, hold the product behind the
tactile barrier.
To use the Current Clamp:
1. Connect the clamp cable to the instrument.
2. Make sure that the measurement instrument is set to the correct range.
3. To open the Current Clamp jaw, push the release button toward the jaw.
4. Connect the Current Clamp jaws around the insulated conductor for
measurement and release the button. Make sure that the release button is in the
initial position to continue the circuit test.
Maintenance
Warning
To prevent possible electrical shock or personal injury, do not use and
disable the product if it is damaged.
If the Current Clamp does not correctly operate, use these steps to help isolate the
problem:
1. Examine the jaw for a clean mating surface. If there is unwanted material, the jaw
will not close correctly and will cause measurement errors.
2. Make sure that the function selection and range are correct on the Multimeter
and adjusted to the sensitivity of the Current Clamp.
Note
A damaged clamp under warranty will be repaired or replaced (at Fluke’s
discretion) at no charge.
Cleaning
If necessary, clean the case with a damp cloth and weak detergent.
Caution
To prevent damage to the Current Clamp, do not use abrasives or solvents to
clean the clamp.
Open the jaws and clean the magnetic pole pieces with a lightly oiled cloth. Do not
let rust or corrosion collect on the magnetic core ends.
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