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Maintenance 

XW

 Warning 

To avoid possible electric shock or personal 

injury: 

 

Before each use, inspect the Current Clamp. 

Look for cracks or missing portions of the 

clamp housing and output cable insulating 

cover and for loose or weakened 

components. Pay particular attention to the 

insulation surrounding the clamp jaws.  

 

Do not use a damaged Current Clamp. If a 

clamp is damaged, tape it shut to prevent 

unintended operation. A damaged clamp 

under warranty will be promptly repaired or 

replaced (at Fluke’s discretion) and returned 

at no extra charge. 

If the Current Clamp does not work or perform properly, use 
the following 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 function selection and range on the 
Multimeter are correct and adjusted to the sensitivity of the 
Current Clamp. 

Cleaning 

Periodically wipe the case with a damp cloth and mild 
detergent.  

W

 Caution 

To avoid damaging the Current Clamp, do not use 
abrasives or solvents to clean the clamp. 

Open the jaws and wipe the magnetic pole pieces with a lightly 
oiled cloth. Do not allow rust or corrosion to form on the 
magnetic core ends. 
 

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 

 

 

 

 

 

 

 

PN 

2458104 

May 2005  

© 2005 Fluke Corporation, All rights reserved.  
All product names are trademarks of their respective companies. 

®

 

Instruction Sheet 

i5s 

AC Current Clamp 

Introduction 

The i5s (hereafter called the “Current Clamp”) is compatible 

with any instrument that can accept a standard BNC connector 

and is capable of ac millivolt measurements; the Current 

Clamp can also be used with digital multimeters using a 

BNC-to-dual banana plug adapter. The Current Clamp 

produces an output of 400 mV ac per 1 A ac input level.

 

Contacting Fluke 

To contact Fluke, call one of the following telephone numbers: 

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 Web site at 

www.fluke.com

To register your product, visit 

register.fluke.com 

Safety Information 

XW

 Read First: Safety Information 

To ensure safe operation and service of the 
Current Clamp, follow these instructions: 

 

Read the operating instructions before use and 
follow all safety instructions. 

 

Use the Current Clamp only as specified in the 
operating instructions, otherwise the clamp’s safety 
features may not protect you. 

 

Adhere to local and national safety codes. Individual 
protective equipment must be used to prevent shock 
and arc blast injury where hazardous live conductors 
are exposed. 

 

Do not hold the Current Clamp anywhere beyond the 
tactile barrier, see Figure 1. 

 

Before each use, inspect the Current Clamp. Look for 
cracks or missing portions of the clamp housing or 
output cable insulation. Also look for loose or 
weakened components. Pay particular attention to 
the insulation surrounding the jaws. 

 

Never use the Current Clamp on a circuit with 
voltages higher than 600 V CAT III. 

 

CAT III equipment is designed to protect against 
transients in equipment in fixed equipment 
installations, such as distribution panels, feeders 
and short branch circuits, and lighting systems in 
large buildings. 

 

The Clamp is designed for use on insulated 
conductors only. Use extreme caution when working 
around bare conductors or bus bars. Contact with 
the conductor could result in electric shock. 

 

Use caution when working with voltages above  
60 V dc or 30 V ac rms. Such voltages pose a shock 
hazard. 

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