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39/41B

Users Manual

Applications

Warning

To avoid electric shock and/or equipment damage, use

caution when connecting alligator clips to live

components. The jaws of alligator clips can create a short

circuit between closely spaced live parts. Avoid making

connections to feeder conductors or bus bars at elevated

potentials. Whenever possible, make connections to the

output side of a circuit breaker, which can provide better

short circuit protection.

Table of Contents5
Safety9
About this Manual11
Uses for the Tester11
Unpacking12
Tester and Accessories13
Additional Items (Model 41B)14
Terminology Used in this Manual15
Battery Considerations16
Memory Retention16
Automatic Power down16
Getting Acquainted with Your Tester17
Getting Acquainted18
Input Connections19
Using the Voltage Test Leads19
Using the Current Probe20
Three-Phase Power Measurements21
Keypad24
Key Descriptions25
Display Screen29
Status Line30
Screen Abbreviations31
Special Messages34
Functions and Screen Modes35
Waveform Screen Mode35
Waveform Screens36
Harmonics Screen Mode37
Harmonics Screens38
Harmonics Overload Screen39
Harmonics Zoom Mode40
Text Screen Mode41
Text Screens42
VA Check Screen43
Typical VA Check Signatures44
Recording Measurements45
Record Screens46
Power-Up Configuration47
Configuration Screens48
Storing & Recalling Measurements (Model 41B)49
Using the Serial Cable (Model 41B)51
Serial Communications (Model 41B)52
Printing (Model 41B)53
Sending to a Printer or PC (Model 41B)53
Using PC Software with the Tester (Model 41B)53
Applications54
Typical Applications55
Plant Switch Gear (Service Entrance)56
Distribution Transformer57
Electronic Equipment Load Center58
Generator Set60
Adjustable Frequency (Speed) Motor Drive61
User Maintenance62
Cleaning62
Fuse Replacement62
Battery Replacement62
Battery Replacement63
Operational Test64
If the Screen Flashes or Is Blank at Power-Up64
If Your Tester Does Not Work64
Accessories and Replacement Parts65
Replacement Parts66
Specifications67
General Specifications71

Brand	Fluke
Model	41B
Category	Measuring Instruments
Language	English

Fluke 41B User Manual

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