Fluke Work Light 39 User Manual

®
Fluke 39/41B  
Power Harmonics Tester  
Users Manual  
4822 872 00916  
July 1995 Rev. 3, 11/00  
© 1995 Fluke Corporation. All rights reserved. Printed in the Netherlands.  
All product names are trademarks of their respective companies.  
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SERVICE CENTERS  
To locate an authorized service center, visit us on the World Wide Web:  
or call Fluke using any of the phone numbers listed below:  
+1-888-993-5853 in U.S.A. and Canada  
+31-402-678-200 in Europe  
+1-425-356-5500 from other countries  
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Table of Contents  
Title  
Page  
Safety ................................................................................................  
About This Manual.............................................................................  
Uses for the Tester .............................................................................  
Unpacking..........................................................................................  
Terminology Used in This Manual......................................................  
Battery Considerations .......................................................................  
Memory Retention..............................................................................  
Automatic Power Down......................................................................  
Getting Acquainted with Your Tester .................................................  
Input Connections...............................................................................  
Using the Voltage Test Leads ........................................................  
v
1
1
2
5
6
6
6
7
9
9
Using the Current Probe ................................................................ 10  
Three-Phase Power Measurements ..................................................... 11  
Keypad............................................................................................... 14  
Display Screen ................................................................................... 19  
Functions and Screen Modes .............................................................. 25  
Waveform Screen Mode ................................................................ 25  
Harmonics Screen Mode................................................................ 27  
Harmonics Zoom Mode ................................................................. 30  
Text Screen Mode ......................................................................... 31  
VA Check Screen ............................................................................... 33  
Recording Measurements ................................................................... 35  
Power-Up Configuration..................................................................... 37  
Storing & Recalling Measurements (Model 41B)................................ 39  
Using the Serial Cable (Model 41B)................................................... 41  
Printing (Model 41B) ......................................................................... 43  
Sending to a Printer or PC (Model 41B) ............................................. 43  
Using PC Software With the Tester (Model 41B) ............................... 43  
Applications....................................................................................... 44  
Plant Switch Gear (Service Entrance) ............................................ 46  
Distribution Transformer............................................................... 47  
Electronic Equipment Load Center ................................................ 48  
Generator Set ................................................................................ 50  
i
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Fluke 39/41B  
Users Manual  
Adjustable Frequency (Speed) Motor Drive................................... 51  
User Maintenance .............................................................................. 52  
Cleaning........................................................................................ 52  
Fuse Replacement ......................................................................... 52  
Battery Replacement ..................................................................... 52  
Operational Test............................................................................ 54  
If the Screen Flashes or is Blank at Power-Up ............................... 54  
If Your Tester Does Not Work....................................................... 54  
Accessories and Replacement Parts .................................................... 55  
Specifications..................................................................................... 57  
ii  
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List of Tables  
Table  
Title  
Page  
1.  
2.  
3.  
4.  
5.  
Key Descriptions...................................................................... 15  
Status Line............................................................................... 20  
Screen Abbreviations................................................................ 21  
Special Messages ..................................................................... 24  
Replacement Parts.................................................................... 56  
iii  
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List of Figures  
Figure  
Title  
Page  
1.  
2.  
3.  
4.  
5.  
Tester and Accessories .............................................................  
Additional Items (Model 41B)..................................................  
Getting Acquainted ..................................................................  
Measurement Connections (1 ) .............................................. 10  
Three-Phase Measurement Connections  
(For Balanced Circuits, 3 , 3-Conductor, ).......................... 11  
Three-Phase Measurement, Balanced or Unbalanced Connections  
3
4
8
6.  
7.  
(3 , 3-Conductor,  
or ) ................................................... 12  
Three-Phase Measurement, Balanced or Unbalanced Connections  
(3 , 4-Conductor) ................................................................... 13  
Keypad..................................................................................... 14  
Display Screen ......................................................................... 19  
8.  
9.  
10. Waveform Screens.................................................................... 26  
11. Harmonics Screens................................................................... 28  
12. Harmonics Overload Screen ..................................................... 29  
13. Harmonics Zoom Screen........................................................... 30  
14. Text Screens ............................................................................ 32  
15. Typical VA Check Signatures................................................... 34  
16. Record Screens......................................................................... 36  
17. Configuration Screens .............................................................. 38  
18. Memory Screen ........................................................................ 39  
19. Serial Communications (Model 41B)........................................ 42  
20. Typical Applications................................................................. 45  
21. Plant Switch Gear .................................................................... 46  
22. Distribution Transformer (1 Watts Text Screen) ................... 47  
23. Distribution Transformer (3 , 3C Watts Text Screen)............. 48  
24. Receptacle Load Center (Neutral Current Measurement) .......... 49  
25. Generator Set ........................................................................... 50  
26. Adjustable Frequency Motor Drive........................................... 51  
27. Battery Replacement ................................................................ 53  
iv  
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Using Your Tester Safely  
Warning  
To avoid electric shock, use only the test leads supplied  
with the Tester. Use 600V rated probe tip adapters.  
(“600V” is printed on the equipment.) Remove all test  
leads that are not in use.  
Use only the 80i-500s ac current probe or a safety-  
designed equivalent (such as the Fluke Model 80i-1000s)  
that is rated for 600V on both the jaws and the measuring  
secondary. Remove any current probe that is not in use.  
In this manual, a WARNING identifies conditions and actions that pose haz-  
ard(s) to the user. A Caution identifies conditions and actions that may dam-  
age the tester or the current probe. See below for explanations of international  
electrical symbols.  
Read the following safety information carefully before attempting to operate  
or service the Tester or the current probe.  
CAUTION see explanation in  
DANGEROUS VOLTAGE  
manual  
AC-ALTERNATING CURRENT  
DC-DIRECT CURRENT  
Equipment protected throughout  
by DOUBLE INSULATION or  
REINFORCED INSULATION  
Either DC or AC  
EARTH  
RECYCLING  
HIGH BNC INPUT  
International Safety Symbols  
Safety Guidelines for Tester and Voltage Probe  
To ensure that you use your Tester safely, follow these guidelines:  
Avoid working alone.  
Inspect the test leads for damaged insulation or exposed metal. Check test  
lead continuity with a multimeter. Replace damaged leads.  
Do not use the Tester if it looks damaged.  
v
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When using the voltage test leads, keep your fingers away from the probe  
contacts. Keep your fingers behind the finger guards on the probes.  
Use caution when measuring above 60V-dc or 30V-ac rms. Such voltages  
pose a shock hazard.  
AC Current Probe Safety Guidelines  
Follow these safety guidelines when using the AC Current Probe:  
Never use the 80i-500s current probe on circuits rated higher than  
600V. Use extreme caution when clamping the current probe around un-  
insulated conductors or bus bars.  
Keep your fingers behind the finger guard on the 80i-500s.  
Check the magnetic mating surfaces of the probe jaws; these should be  
free of dirt, dust, rust, or other foreign matter.  
Do not use a current probe that has been cracked or damaged or has de-  
fective leads. If there is any such sign of impaired operation, tape the  
probe shut to prevent operation.  
The 80i-500s has been designed and tested according to IEC 1010-1:1992  
and other safety standards. Follow all warnings to ensure safe operation.  
vi  
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About This Manual  
This manual contains instructions for the 39 and 41B Power Harmonics  
Testers (hereafter referred to as the Tester). All information applies to both  
models unless otherwise indicated.  
Uses for the Tester  
You can use the Tester to measure voltage and current inputs at power line  
and harmonic frequencies. Using these inputs, the Tester automatically  
calculates power and a wide range of other measurements useful in  
determining harmonic distortion levels and sources. The Tester can display  
power calculations in either a single-phase or a 3-phase readout.  
These capabilities allow you to monitor power quality before and after an  
installation, troubleshoot a power distribution system, and (with Model 41B)  
print out or download data for additional analysis.  
The Tester is both a harmonics measurement tool and a power meter or  
digital multimeter. You can use the Tester to measure voltage events  
(undervoltage, overvoltage, line outages, and neutral to ground levels),  
current levels, or to measure power levels. Fundamental frequency  
measurements (to 100 Hz) and harmonic frequency measurements (to about 2  
kHz) are also possible.  
The Tester cannot measure frequencies above about 2 kHz. (Use the  
ScopeMetertest tool to measure fast power transients.)  
1
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39/41B  
Users Manual  
Unpacking  
The following items are included in your tester kit (see Figure 1):  
Model 39 Power Meter or Model 41B Power Harmonics Analyzer  
80i-500s AC Current Probe  
TL-24 Test Leads  
TP-20 Test Probes  
AC-20 Test Clips  
Your kit also includes the following printed materials:  
Users Manual (this book)  
Quick Reference Guide  
Warranty Registration Card  
For Model 41B only, the following additional items are included. Refer to  
Figure 2.  
RS-232 Serial Cable  
FlukeView41 Windows Software Disk  
Check the contents of the box for completeness, noting any damage. If  
something in the kit has been damaged or is missing, contact the supplier  
immediately.  
2
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Unpacking  
TL-24  
Test Leads  
(Set of two. Red and Black)  
80i-500s  
AC Current  
Probe  
AC-20  
Test Clip  
TP-20  
Test Probe  
POWER HARMONICS  
ANALYZER  
41  
®
a2f.eps  
Figure 1. Tester and Accessories  
3
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39/41B  
Users Manual  
RS-232 Cable  
Companion Software  
3.5-Inch Floppy Disks (FlukeView 41)  
a3f.eps  
Figure 2. Additional Items (Model 41B)  
4
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Terminology Used in This Manual  
Terminology Used in This Manual  
This manual uses the following standard terminology:  
“Mains” is line voltage or frequency.  
φ1”, “φ2”, and “φ3” refer to the three current supply phases.  
“Delta”  
“Wye”  
.
.
“N” is Neutral.  
is Earth ground.  
“AC Current Probe” or “Probe” refers to the 80i-500s, which can also be  
called a “current clamp”.  
5
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39/41B  
Users Manual  
Battery Considerations  
New alkaline C cells typically provide more than 48 hours of continuous  
operation. You can also use NiCad batteries. However, depending on battery  
condition, fully charged NiCad batteries provide 16 hours or less of  
continuous operation.  
Plan to replace the batteries as soon as possible after the symbol comes on.  
Refer to User Maintenance later in this manual for battery changing  
instructions.  
Note  
After the Tester is dropped, it may not turn on. Check the batteries  
to see if they are misaligned or damaged. Reseat the batteries if they  
are misaligned; replace the batteries if they are damaged.  
Memory Retention  
Whenever you remove power from the Tester (pressing off, letting the  
batteries run down, removing the batteries, or experiencing an automatic  
power down), the Tester retains all essential operating information in  
nonvolatile memory. Specifically, the Tester retains calibration accuracy,  
power-up configuration information, and any stored waveforms (Model 41B).  
However, if you remove power when Record is active, the Tester loses all  
recorded values.  
Automatic Power Down  
If you do not press any keys for approximately 15 minutes, the Tester  
normally powers down automatically. If Record is active, the Tester continues  
to operate unattended as long as the battery condition allows.  
The Tester returns to its power-up configuration whenever you turn it on.  
If the Tester encounters a memory error at power-up, it automatically turns  
itself off. Check the batteries and try turning the Tester on again. If this  
problem persists, contact a Fluke Service Center.  
6
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Getting Acquainted with Your Tester  
Getting Acquainted with Your Tester  
While referring to Figure 3, perform the following key presses to familiarize  
yourself with basic tester operations.  
1.  
2.  
to turn the Tester on.  
(brief press) and  
or  
to change screen contrast.  
(hold 1 second) to turn the backlight on or off.  
3.  
to select a measurement function (Volts, Amps, Watts).  
4.  
5.  
to select a screen mode (Waveform, Harmonics, Text ).  
to start recording measurements  
or  
to select NOW, MAX, AVG, MINrecording.  
to select a different measurement function while recording.  
to exit recording.  
6.  
to turn the Tester off.  
7
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39/41B  
Users Manual  
®
41  
POWER HARMONICS  
ANALYZER  
6
1
3
5
2
4
a4f.eps  
Figure 3. Getting Acquainted  
8
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Input Connections  
Input Connections  
Refer to Figure 4 for a view of the two-input measurement scheme. To  
measure voltage, insert the red test lead in “V” and the black test lead in  
“COM.” Current measurement uses a BNC connector attached to “CURRENT  
PROBE.” Connect “V” and “COM” to measure only voltage; connect  
“CURRENT PROBE” to measure only current. Make all three connections for  
power measurements.  
Observe the following connection guidelines:  
Current  
Clamp the Current Probe around the desired phase or neutral conductor.  
Make sure the arrow on the probe points toward the load (phase) or the  
source (neutral). The Tester is set up for use with an 80i-500s Current  
Probe. If you use another probe, you must make a selection change in the  
Configuration Screen.  
Voltage: 3-phase, 4-Wire  
Connect the red test lead to the desired phase voltage; connect the black  
test lead to neutral.  
Voltage: 3-phase, 3-Wire, example  
Connect the red test lead to the phase conductor used by the Current  
Probe; connect the black test lead to another phase.  
Using the Voltage Test Leads  
The TL-24 Test Lead and AC-20 Test Clip combination (Figure 1), which  
allows for hands-free voltage measurements, is preferred when you are also  
using the Current Probe.  
Note  
Figure 4 shows suggested test lead and current probe usage.  
9
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39/41B  
Users Manual  
Using the Current Probe  
The accuracy of current and power readings depends on properly using the  
80i-500s Current Probe. The accuracy specifications in this manual assume  
that the Current Probe is used correctly.  
Always clamp the 80i-500s Current Probe with the arrow pointing toward  
the load (away from the source) for a phase measurement or toward the  
source for a neutral measurement. Press  
to verify the Current Probe  
orientation. If the resulting VA Check Screen generally extends from the  
lower left to the upper right of the screen, the Current Probe is connected  
properly.  
Always clamp the Current Probe around a single conductor or parallel  
conductors that are carrying current for the same phase.  
Always center the conductor in the Current Probe alignment marks.  
Line  
Red  
Load  
Black  
POWER HARMONICS  
ANALYZER  
41  
®
N
a5f.eps  
Figure 4. Measurement Connections (1  
)
10  
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Three-Phase Power Measurements  
Three-Phase Power Measurements  
Refer to Figures 5, 6, and 7 for various ways to measure total power in a  
three-phase system. The W3 3C display screen shows the three-phase  
calculation for the connection shown in Figure 5. All other screens and  
functions show only single-phase data.  
Load  
φ1  
φ2  
Red  
Black  
POWER HARMONICS  
ANALYZER  
41  
®
W1  
φ3  
a74f.eps  
Figure 5. Three-Phase Measurement Connections (For Balanced Circuits,  
, 3-Conductor,  
3
)
11  
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39/41B  
Users Manual  
Load  
φ1  
Red  
φ2  
Black  
POWER HARMONICS  
ANALYZER  
41  
®
W1  
φ3  
Red  
Wtotal = W1 + W2  
POWER HARMONICS  
ANALYZER  
41  
®
W2  
W1 + W2  
PF =  
3
(VA1 + VA2)/2  
a6f.eps  
Figure 6. Three-Phase Measurement, Balanced or Unbalanced  
Connections (3 , 3-Conductor, or  
)
12  
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Three-Phase Power Measurements  
φ1  
Red  
POWER HARMONICS  
ANALYZER  
41B  
®
W1  
φ2  
Red  
Load  
Black  
POWER HARMONICS  
ANALYZER  
41B  
®
W2  
φ3  
Red  
Black  
Black  
N
POWER HARMONICS  
ANALYZER  
41B  
®
Wtotal = W1 + W2 + W3  
W3  
a7f.eps  
Figure 7. Three-Phase Measurement, Balanced or Unbalanced  
Connections (3 , 4-Conductor)  
13  
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39/41B  
Users Manual  
Keypad  
Refer to Figure 8 and Table 1 for keypad operation.  
1
2
3
4
5
14  
13  
12  
6
7
11  
10  
9
8
a8f.eps  
Figure 8. Keypad  
14  
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Keypad  
Table 1. Key Descriptions  
Name & Description  
Number  
Symbol  
1
Power  
Press once to turn the Tester on; a test pattern is  
displayed briefly. (Test pattern remains displayed  
while key is held pressed.) Press again to turn  
the Tester off. The Tester sets up to the power-  
up configuration each time you turn it on.  
Arrow Keys  
2
3
These keys have multiple uses. Refer to other  
areas for specific  
and  
descriptions.  
Contrast/Backlight  
Tap briefly to adjust contrast (with  
);  
tap again to store setting and return to normal  
operation. Press and hold  
for about 1 second  
to turn the backlight on or off.  
4
Screen Mode  
M
Press to cycle the Tester through Waveform,  
Harmonics, and Text Screen Modes. You select  
the Measurement Function (Volts, Amps, or  
Watts) independently of the Screen Mode.  
15  
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39/41B  
Users Manual  
Table 1. Key Descriptions (cont)  
Symbol Name & Description  
Range (Waveform and Text)  
Number  
5
Press  
momentarily to start manual ranging  
(MAN) for all Measurement Functions (V, A, W).  
Continue momentary presses to cycle through  
the ranges for the selected Measurement  
Function only. (Ranges do not change for the  
other two Measurement Functions.) Press and  
hold about 1 second to return to autoranging  
(AUTO) for all Measurement Functions (V, A, W).  
The Tester always begins autoranging at power-  
up.  
Range (Harmonics)  
Press  
momentarily to cycle from 100% to  
10%, 20%, 50%, and back to 100%. Other  
harmonics screen ranges and voltage or current  
measurement ranges do not change while in  
harmonics display.  
6
7
VA Check  
Press at any time for a check of the volts versus  
amps signature at the test point. Press  
second time to return to normal operation. See  
also VA Checksection.  
a
Memory (Model 41B)  
Press to access the Waveform Storage Screen.  
Press  
operation. Also, you can clear all stored  
waveforms by holding pressed as you  
on. See also Storing and Recalling  
a second time to return to normal  
press  
Measurements.”  
16  
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Keypad  
Table 1. Key Descriptions (cont)  
Symbol Name & Description  
Phase Reference  
Number  
8
Press to select volts or amps as the display  
phase reference. Voltage reference is the  
standard configuration. For current only  
measurements, press  
to set  
. To  
change the power-up phase reference, see  
Power-Up Configurationlater in this manual.  
9
Send (Model 41B)  
Press to print a test report of calculated  
measurements to a printer or PC. (The Tester  
displays SEND.) Do not press  
when  
FlukeView 41 application software is in use. See  
Sending to a PC.  
10  
Smooth  
Smooth allows you to average waveforms,  
resulting in a more stable screen and increased  
accuracy of computations. (See Specifications.)  
Press  
Smooth selections (  
20s in the top status line). Pressing  
fifth time returns the Tester to normal operation.  
four times to step through the  
2s, 5s, 10s,  
a
17  
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39/41B  
Users Manual  
Table 1. Key Descriptions (cont)  
Symbol Name & Description  
Number  
11  
Print (Model 41B)  
Press to print a screen dump to a printer. (The  
Tester displays  
key. Do not press  
.) To stop printing, press any  
when FlukeView 41  
application software is in use. See Sending to a  
PC.  
12  
13  
Record  
Press to start Record. Press  
to resume normal operation. You can also return  
the Tester to its standard (factory-programmed)  
a second time  
configuration by holding  
as you press on  
.
Hold  
Press  
to freeze the screen. ( appears in  
the top line.) You can now observe all screens for  
a single measurement. Press  
resume normal operation.  
again to  
serves as the ENTERkey when used with  
some other screens. Also, you can access the  
Power-Up Configuration Screen by pressing  
as you press  
on.  
14  
Measurement Function  
F
Press to cycle the Tester through Volts, Amps,  
and Watts Measurement Functions. You select the  
Screen Mode (Waveform, Harmonic, or Text)  
independently of the Measurement Function.  
18  
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Display Screen  
Display Screen  
The screen consists of the following three areas (see Figure 9):  
Status Line: identifies Tester operating conditions. See Table 2.  
Measurement Area: shows information as waveform, harmonics bar  
chart, or set of text computations. Refer to Table 3 for abbreviations used  
in all Measurement Functions and Screen Modes.  
Special Messages. See Table 4.  
Measurement Area  
(see Table 3)  
Status Line (see Table 2)  
Cursor Data  
Special Screen Messages  
(see Table 4)  
>30V rms Input or in Hold (  
)
Low Battery Condition  
a9c.eps  
Figure 9. Display Screen  
19  
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39/41B  
Users Manual  
Table 2. Status Line  
Hold active (screen frozen). appears in lower left screen  
to indicate possible high voltage input that is not sensed  
during Hold.  
Phase Reference Selection. The volts input or the current  
input is the reference for determining phase shift. Select  
when measuring current only with voltage test leads not  
connected.  
2s  
5s  
Smooth Selection. Smooth is active with averaging times of  
2, 5, 10, or 20 seconds. A higher number signifies a more  
stable measurement reading.  
10s  
20s  
OL-V  
Volts Overload Condition for the selected range (over 600V  
if in AUTO).  
OL-A  
Amps Overload Condition for the selected range (exceeds  
2V peak if in AUTO). Since the input from the Current Probe  
is 1 mV/A, maximum current input is 2000A pk.  
OL-VA  
Both volts and amps maximum inputs have been exceeded.  
Note  
When an overload occurs, all measurement and computation data  
must be presumed invalid.  
AUTO  
The Tester switches range automatically to deal with  
changing volts, amps, or watts readings.  
MAN  
Tester does not switch ranges automatically.  
Memory location (X) last accessed. (X = 1 to 8)  
Send is active (prints test reports, Model 41B.)  
Print is active (prints screen dumps, Model 41B.)  
MEMX  
SEND  
PRNT  
20  
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Display Screen  
Table 3. Screen Abbreviations  
Name and Description  
Phase Angle degrees. ( 180°)  
Screen Usage  
°
Measures time from the positive zero crossing of the  
fundamental of the selected volts or amp REF. 360°  
represents one cycle at the fundamental or selected  
harmonic frequency. A positive sign indicates that the  
positive zero crossing of the measured cycle comes  
earlier than (leads) that of the reference.  
Note  
For the Watts  
screen, the phase angle always shows the  
relation of Amps to the Volts REF at the same frequency. Cosφ  
calculations are based on this definition.  
A RMS  
Amps RMS (includes dc component if using dc capable  
current probe).  
A PK  
A DC  
A HM  
Peak Amps (1/2 peak-to-peak value).  
Amps DC.  
For a current waveform, A HM identifies the total  
harmonic current present.  
A LEAD  
A LAG  
CF  
Amps Lead Volts  
Evidence of capacitive reactance in the system; the  
current waveform precedes the voltage waveform.  
Amps Lag Volts  
Evidence of inductive reactance in the system; the  
current waveform occurs after the voltage waveform.  
Crest Factor  
Ratio of a waveforms peak value to its rms value.  
21  
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39/41B  
Users Manual  
Table 3. Screen Abbreviations (cont)  
Name and Description  
Screen Usage  
DPF  
Displacement Power Factor cosφ fundamental  
The ratio of the active power (W) to the apparent power  
(VA rms) at the fundamental frequency. Equivalent to  
cosφ at that frequency. Traditional power factor for linear  
loads.  
HZ  
KF  
Waveform Screens: Fundamental frequency in hertz  
Harmonics Screens: Frequency of selected harmonic in  
hertz  
K-Factor  
A load current waveform rating calculation that rates the  
waveforms capability to produce harmonic-related heat  
loss in transformers and other magnetic components.  
Used to select transformer K-ratings that match load  
current K-factor measurements.  
PF  
Power Factor  
Ratio of active power to apparent power (including all  
harmonics).True power factor for all loads, linear and  
non-linear.  
% THD-F  
Total Harmonic Distortion (as % of Fundamental)  
Defines amount of harmonic distortion as a percentage  
of the waveform at the fundamental frequency.  
% THD - F = rms of harmonics (less fundamental)  
rms of fundamental  
% THD-R  
Total Harmonic Distortion (as % of rms total)  
Defines amount of harmonic distortion as a percentage  
of the rms value of waveforms at all frequencies  
(fundamental and harmonics).  
% THD - R = rms of harmonics (less fundamental)  
total rms  
22  
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Display Screen  
Table 3. Screen Abbreviations (cont)  
Name and Description  
Screen Usage  
V RMS  
Volts rms (includes dc component).  
COS  
Cosine of the angle between the voltage and the current  
at any single frequency.  
V PK  
V DC  
V HM  
Peak Volts (1/2 peak-to-peak value).  
Volts DC.  
Harmonic Volts RMS  
For a voltage waveform, V HMidentifies the total  
harmonic voltage present.  
VA, KVA  
(Kilo) Volt Amps  
Apparent power: a value that the Tester calculates by  
multiplying the rms value for current by the rms value for  
voltage.  
VAR, KVAR  
(Kilo) Volt Amps Reactive  
The reactive power component of the fundamental  
frequency.  
W, KW  
Active Power  
The average power dissipated (also called real power).  
23  
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39/41B  
Users Manual  
Table 4. Special Messages  
<CONTRAST>  
Press  
or  
to adjust contrast. Press  
to exit contrast control and  
store current setting.  
* CALIBRATION ERROR *  
CONTACT FLUKE SERVICE  
The Tester has detected a calibration error at power-up. Since erroneous  
readings result, the Tester displays this message until calibration is verified.  
Return the Tester to a Service Center for repair or calibration. See User  
Maintenancelater in this manual.  
STOP AVG AT 48 HOURS  
In Record, averaging stops after 48 hours. Note the average value shown;  
then, press  
once to return to normal operation or twice to begin  
recording with new values.  
* PRINTING *  
PRESS ANY KEY TO STOP  
On Model 41B, this message appears when you press  
any key to resume normal operation.  
or  
. Press  
24  
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Functions and Screen Modes  
F M  
Functions and Screen Modes  
The Tester uses a set of multipurpose screens to present each type of  
measurement (volts, amps, watts) as a waveform, a relational bar chart of  
harmonics, or a series of digital (text) readouts. With multiple values and  
computations on each screen, you only need to press a few keys to see  
everything there is to know about power (or just voltage or current) at the test  
point. Cycle through the choices by pressing either (or both) of these keys.  
The Tester preserves selections that are active in one screen as you switch to  
another screen. For example, if you are measuring harmonic in the Volts  
Harmonic Screen and change function, the Tester continues measuring  
harmonic in the amps and watts harmonic screens.  
Waveform Screen Mode  
Volts, amps, and watts waveform screens (Figure 10) use a common format to  
present information about the measurement inputs. This format shows digital  
information on top and a waveform on the bottom. The waveform vertical  
scale limits usually change automatically (AUTOon) to accommodate the  
magnitude of the input. The horizontal scale represents 0 through 360 degrees  
(one cycle) of the fundamental frequency.  
With a waveform screen displayed, press  
or  
to activate the  
vertical cursor bar. Continue to press these keys to position the cursor along  
the horizontal degree scale. A second line of digital information defines the  
magnitude and phase for the point where the cursor bar intersects the  
waveform.  
Note  
In the waveform screens, the frequency displayed is the frequency of  
the fundamental. This is normally true even when the signal being  
measured contains an individual harmonic with an amplitude  
greater than the fundamental (such as the third harmonic in the  
neutral current of a 3 , 4-wire system supplying non-linear loads).  
To obtain the frequency of a harmonic, select the harmonic screen  
and use  
and  
to position the cursor arrow under the  
harmonic of interest.  
25  
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a10c.eps  
Figure 10. Waveform Screens  
26  
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Functions and Screen Modes  
Harmonics Screen Mode  
The Harmonics Screen Mode (Figure 11) uses a set of screens to display  
magnitude bars for all harmonics and digital information about the selected  
harmonic. Select a harmonic by pressing  
along the bottom scale. DC, (the fundamental frequency), and harmonics  
through appear on the first screen. Harmonics through appear on  
the second screen. Switch between harmonics screens by pressing  
when is selected on the first screen or when is selected on the  
second screen.  
and  
to move the cursor  
At the top of the screen, the percentage shown compares the selected cursor  
magnitude to either the fundamental (%F) or the total rms value (%R)  
(fundamental and all harmonics). The Tester also shows the magnitude of the  
cursor selection. The frequency of the selected harmonic is shown in Hertz  
below the percentage.  
Note  
The watts harmonic screen always uses the %F (fundamental) definition.  
27  
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a12c.eps  
Figure 11. Harmonics Screens  
28  
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Functions and Screen Modes  
The harmonics overload screen (Figure 12) appears if either of the following  
conditions exists:  
There is no input on the phase reference channel. For example, there is  
no voltage input when is selected.  
There is no input on one of the measurement channels (volts or amps).  
a11s.eps  
Figure 12. Harmonics Overload Screen  
29  
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Harmonics Zoom Mode  
Use  
to scale a selected harmonic bar graph display (Figure 13) to more  
easily read the harmonic information. This mode automatically scales the bar  
graph display to 100%, 50%, 20%, or 10% based on the largest harmonic  
value; the magnitude of the fundamental is ignored. Using  
in harmonic  
screens affects the display only and does not affect measurement range  
control. To change measurement ranges, the display must be in waveform or  
text screens.  
An arrow at the top of the bar indicates that the harmonic has exceeded its  
scale. The percent of harmonic and digital values are correct even when the  
harmonic bar exceeds its scale.  
The cursor selection displays the percent of the harmonic and its value in  
digital form.  
a84s.eps  
Figure 13. Harmonics Zoom Screen  
30  
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Functions and Screen Modes  
Text Screen Mode  
Text screens (Figure 14) present digital information for values measured or  
computed by the Tester. Arrows appear on the primary text screen signifying  
that you can press  
to access a secondary text screen. In watts, the  
primary screen shows the single-phase (1φ) power reading. The secondary  
(3φ, 3C) screen shows the estimates of the total three-phase performance from  
one single-phase reading.  
31  
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a13c.eps  
Figure 14. Text Screens  
32  
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VA Check Screen  
VA Check Screen  
Press  
at any time to access the VA Check screen, which displays volts  
graphed against amps. Press  
a second time to exit the VA Check screen  
and return to your starting point.  
With the VA Check screen, the Tester displays one cycle of the fundamental  
frequency (current on the vertical scale, voltage on the horizontal scale). The  
resulting graph can appear as a straight line, a stepped line, an ellipsoid, or as  
some other pattern that you would normally expect to see on an oscilloscope  
with two input channels.  
Use the VA Check screen to show the phase shift of the fundamental  
frequency and detect the existence and severity of nonlinearity caused by  
harmonics. It could be that the VA Check screen may simply show that you  
have clamped the Current Probe in the wrong direction. Figure 15 shows  
some typical VA Check signatures.  
When the Tester is set for autoranging (AUTO), ranges for the vertical and  
horizontal scales on the VA Check screen are adjusted automatically to  
provide a meaningful display. If the Tester is set for manual ranging (MAN),  
both scales (ranges) are fixed; you may have to choose AUTO(press  
for  
1 second) or select an appropriate manual range in either V or A, or both  
functions (i.e., press  
briefly for each range change).  
Note  
V or A ranges cannot be changed while in the VA Check screen.  
33  
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Users Manual  
A linear load with no phase shift.  
A linear load with phase shift. A narrow ellipsoid in  
this pattern usually does not mean there is a  
problem. For wider ellipsoids, check power factor  
(PF). If the ellipsoid is backwards (upper left to  
lower right), check that you have pointed the  
current probe in the right direction.  
A nonlinear load, usually resulting from pulse-type  
power supplies.  
A nonlinear load resulting from a 3-phase (six  
pulse) rectifier power supply.  
A linear load that is 180 degrees out of phase. A  
Current Probe pointed in the wrong direction or  
reversed polarity voltage leads can cause this  
indication. This incorrect alignment will also cause  
negative power readings.  
A combination of harmonic content and phase shift  
of the fundamental frequency.  
A pattern indicative of a silicon-controlled rectifier  
(SCR) power supply.  
a14c.eps  
Figure 15. Typical VA Check Signatures  
34  
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Recording Measurements  
Recording Measurements  
Press  
press  
to begin recording readings for all measurement functions. Then  
or to cycle through the screens for the function presently  
selected. You can also switch between measurement functions while in  
Record mode. (See Figure 16 for an overview of possible record screens.) For  
any function, the Tester displays screens in the following order:  
NOW  
The present readings. This screen always appears first when you  
start Record.  
MAX  
AVG  
The maximum values measured since you started Record.  
The averages of values measured since you started  
Record. (Average values stop updating after 48 hours of  
continuous record operation.)  
MIN  
The minimum values measured since you started Record.  
When in Record, only the following keys are active:  
F
Press  
a second time to exit Record. This action discards all recorded  
values and returns to the previous measurement screen. The Tester begins  
storing a new set of values each time you start Record.  
The Tester loses recorded values if the batteries discharge too much. If  
comes on during Record, write down any values of interest. (You have ample  
time to do this with alkaline batteries. NiCad batteries discharge much more  
rapidly once comes on.) Changing the battery erases the Record memory.  
You can access 12 different record screens: NOW, MAX, AVG, and MINfor  
volts, amps, and watts measurement functions. Figure 16 presents an  
overview of the record measurements and computations available by function.  
Note  
The Record mode acquires only single-phase data approximately  
every 500 ms (0.5s). It is not intended to capture transients, nor is it  
able to capture single events on the power line.  
35  
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V
A
W
a15c.eps  
Figure 16. Record Screens  
36  
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Power-Up Configuration  
+
Power-Up Configuration  
The Tester has two types of configurations: standard and power-up. The  
standard configuration, which is programmed into the Tester and can always  
be retrieved, includes the following settings:  
FCN V  
Volts Function selected.  
DISP WAVE Waveform Screen Mode selected.  
THD %RMS  
Total Harmonic Distortion computed as percentage of  
the total RMS value.  
CLAMP 80I-500S The 80i-500s Current Probe is selected.  
OTHERspecifies any current probe other than the 80i-500s. The Tester  
has been calibrated to provide either compensation for the 80i-500s or a  
flat response for other probes.  
REF V Voltage Phase Reference selected.  
For Model 41B, KBAUD 9.6is the standard configuration for Print or Send,  
and EPSONis the standard configuration. The Tester always selects  
autoranging at power-up.  
The power-up configuration, which is initially the same as the standard  
configuration, can be changed by making entries from the configuration  
screen. The Tester sets up to the power-up configuration each time it is turned  
on. You can change the power-up configuration using the following  
procedure:  
1. Press  
while pressing to turn the Tester on. The configuration  
screen appears. (See Figure 17.)  
2. Press  
line.  
and  
to highlight different items on the same line. Press  
to select the currently highlighted item and proceed to the next  
37  
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39/41B  
Users Manual  
3. To exit the screen, press  
to select a highlighted item on the last line  
and store all selections you have made during this configuration session.  
The Tester begins normal operation using these selections. The Tester  
also automatically sets up to these selections at the next power-up.  
To exit the screen without making changes, press  
all selection lines.  
to cycle through  
4. To restore the standard configuration, press  
as you press on.  
(On Model 41B, this action also clears waveform memory.)  
a16c.eps  
Figure 17. Configuration Screens  
38  
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Storing & Recalling Measurements (Model 41B)  
Storing & Recalling Measurements (Model 41B)  
Model 41B allows you to store a maximum of eight waveforms (and  
associated data) for volts and amps. You can recall data that you have  
collected on site for later viewing and analysis. (If you store multiple  
waveforms in this manner, you will probably want to keep a written record  
identifying the waveforms by number.)  
The Tester stores a measurement as digital data. You can recreate all related  
waveform, harmonic, and text screen information, except Record, when you  
recall the waveform.  
The Tester stores waveforms in nonvolatile memory. A low battery condition  
or a battery change does not jeopardize the stored waveforms.  
Referring to Figure 18, use the following procedure to store and recall  
measurements:  
1. Press  
to access the waveform storage screen. The Tester freezes the  
existing waveform and shows the screen in Figure 18.  
2. Press  
or  
to select the desired operation (RECALL, STORE,  
or CLEAR). Then press  
.
3. Select one of the eight memory locations by pressing  
or  
to  
box one through eight. An underscore appears below a filled memory  
location.  
a17s.eps  
Figure 18. Memory Screen  
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39/41B  
Users Manual  
4. STOREa waveform set (and associated data) into the boxed memory  
location by pressing  
. If the location was empty, an underscore now  
appears below the memory location number. If the underscore already  
existed, STOREoverwrites the old waveform.  
CLEARthe selected memory location (waveform and associated data)  
from the boxed memory location by pressing  
RECALLthe selected memory location to view the contents directly by  
pressing  
.
.
In all three cases, the Tester holds the data represented by the waveform  
last seen on the memory screen and returns to the previous display mode.  
While Hold is maintained, you can access various representations and  
computations about the waveform by selecting different measurement  
function and screen mode combinations. You can also send the associated  
data to a PC or a printer.  
5. Release the memory display and return to the active display mode by  
pressing  
.
Notes  
You can clear all memory locations by holding  
you press on.  
pressed while  
MAX, AVG, and MINinformation in the RECORD mode cannot be  
stored in a memory location.  
40  
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Using the Serial Cable (Model 41B)  
Using the Serial Cable (Model 41B)  
Model 41B communicates with a PC or printer (Figure 19) through an  
isolated RS-232 port. The Tester outputs data through the RS-232 port when  
you press  
or  
or when you send a command from the PC.  
Note  
The side of the optical interface connector marked “Optical  
Interface RS-232-C” faces up when properly attached to the Model  
41B.  
Using the Configuration Screen, you can set 1.2, 9.6, or 19.2 KBAUD.  
Other parameters are fixed as follows: 1 start bit, 8 data bits, 1 stop bit, and  
no parity.  
41  
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Users Manual  
®
4 1  
A N A L Y Z E R  
P O W E R H A R M O N I C S  
a18f.eps  
Figure 19. Serial Communications (Model 41B)  
42  
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Printing (Model 41B)  
Printing (Model 41B)  
Pressing  
sends data for the present screen to a printer. Printer type  
compatibility is selected on the configuration screen as Epsonor HP.  
The Tester displays PRNTand the following message appears:  
* PRINTING *  
PRESS ANY KEY TO STOP  
Press any key to abort printing; all keys then return to their normal functions.  
Sending to a Printer or PC (Model 41B)  
Press  
to start outputting calculated results to the printer or PC. Model  
41B stops outputting after it has sent a single set of calculated results. At  
9600 baud, the Tester requires a few seconds to output a typical set of  
calculated values (1120 bytes).  
Note  
Do not press  
or  
while printing or using FlukeView 41  
software. In either case, pressing  
communications.  
or  
disrupts  
Using PC Software with the Tester (Model 41B)  
FlukeView41 software is provided for Windows. Refer to the operating  
instructions provided with the software.  
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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.  
44  
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Applications  
LIGHTING L.C.  
Plant  
Switch  
Gear  
MOTOR L.C.  
Adjustable  
Frequency  
(Speed) Motor  
Drive  
UTILITY  
XFMR  
Receptacle  
Load Center  
Distribution  
Transformer  
230V  
120V  
a19f.eps  
Figure 20. Typical Applications  
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Plant Switch Gear (Service Entrance)  
Measure current, load balance, and total harmonic distortion. Refer to Figure  
21. Press  
to select current (  
) for the display phase reference.  
POWER HARMONICS  
®
ANALYZER  
41  
®
a20f.eps  
Figure 21. Plant Switch Gear  
46  
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Applications  
Distribution Transformer  
Measure Power Factor, K Factor, power, neutral current, neutral frequency,  
and load balance between phases. Refer to Figures 22 and 23.  
I
2
3
N
1
3
2
POWER HARMONICS  
ANALYZER  
41B  
®
a21f.eps  
Figure 22. Distribution Transformer (1 Watts Text Screen)  
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I
2
3
N
1
3
2
POWER HARMONICS  
ANALYZER  
41B  
®
a82f.eps  
Figure 23. Distribution Transformer (3 , 3C Watts Text Screen)  
Electronic Equipment Load Center  
Make connections to circuit breakers by first turning the circuit breaker off.  
Then connect the alligator clip to the breaker output terminal via a short piece  
of insulated wire, refer to Figure 24.  
48  
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Applications  
Measure for excessive current (tripping of circuit breakers) and other general  
measurements (such as level of current flow) in each circuit. Measure balance  
between phases, neutral current and frequency, and harmonic distortion.  
Measure input current, crest factor, and harmonics for PC, copier, printer,  
and single phase UPS. Most electronic equipment loads are nonlinear due to  
their use of switching-type power supplies.  
Black  
Red  
ON  
OFF  
POWER HARMONICS  
ANALYZER  
41B  
®
a22f.eps  
Figure 24. Receptacle Load Center (Neutral Current Measurement)  
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Generator Set  
Measure for excessive current, proper frequency (adjust generator speed), and  
other general uses. Refer to Figure 25. (Small generator shown.)  
POWER HARMONICS  
ANALYZER  
41B  
®
a23f.eps  
Figure 25. Generator Set  
50  
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Applications  
Adjustable Frequency (Speed) Motor Drive  
Measure input and output current and current frequency. Refer to Figure 26.  
The Tester measures the output current frequency of the drive. (Output  
current provides the most stable frequency measurement.) Input power and  
harmonic currents can also be measured. Press  
the display reference.  
to select current  
for  
OUTPUT  
B
INPUT  
2
OUTPUT  
B
INPUT  
2
A
C
1
3
A
C
1
3
OUTPUT  
INPUT  
IN  
OUT  
POWER HARMONICS  
ANALYZER  
41B  
®
a24f.eps  
Figure 26. Adjustable Frequency Motor Drive  
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User Maintenance  
Cleaning  
Clean your Tester with a damp cloth and a mild detergent. Do not use  
abrasives, solvents, or alcohol.  
Fuse Replacement  
The Tester uses electronically protected inputs; no fuses are required.  
Battery Replacement  
Warning  
To avoid electrical shock, disconnect the voltage test  
leads and the current probe before replacing the batteries.  
The Tester must be disconnected from all sources before  
you can open it for any adjustment, battery replacement,  
maintenance, or repair.  
The Tester uses four alkaline C cells (supplied). You can also use four  
rechargeable NiCad batteries, which you must supply. (The Tester does not  
provide for internal recharging.)  
Note  
N T  
Used Nickel-Cadmium batteries should be disposed of by a qualified  
recycler or hazardous materials handler. Contact your authorized  
Fluke Service Center for recycling information.  
Referring to Figure 27, use the following procedure to replace the batteries:  
1. Press off.  
2. Disconnect the voltage test leads and the Current Probe at the test points  
(first) and at the Tester (second).  
3. Place the Tester face down on a nonabrasive surface. Loosen the two  
screws with a flat-blade screwdriver.  
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User Maintenance  
4. Lift the battery access lid away from the Tester.  
5. Replace the C cells (alkaline or recharged NiCad) as shown in Figure 24.  
Observe the battery polarity shown in the battery compartment.  
6. Secure the battery access lid back in position with the two screws.  
a25f.eps  
Figure 27. Battery Replacement  
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Operational Test  
Use any of the applications shown in this manual to verify volts, amps, and  
watts measurability. For a full operational test, refer to the Service Manual  
(P/N 601044).  
If the Screen Flashes or is Blank at Power-Up  
If the screen flashes or is blank at power-up, it may be caused by a low  
contrast setting. If neither or the following procedures works, refer to “If Your  
Tester Does Not Work” for instructions on returning the unit for repair.  
If the instrument flashes a dark test pattern and then appears blank:  
Tap , then hold  
down for several seconds. A normal screen display  
should appear. Adjust to the desired contrast, then tap again to store the  
setting.  
If the screen is blank (no dark flash):  
Check the batteries. If the batteries read below 1.1V, replace them. If the  
screen is still blank, refer to “If Your Tester Does Not Work” for instructions  
on returning the unit.  
If Your Tester Does Not Work  
If your Tester does not work, make the following basic checks:  
Examine the case for physical damage. If you detect damage, contact a  
Fluke Service Center. (Refer to the list of service centers at the end of this  
manual.)  
Are you testing a live circuit? Test on a known-live circuit.  
Check the batteries, test leads, and Current Probe. If necessary, replace  
any of these items.  
Review applicable parts of this manual to make sure you are operating  
the Tester correctly.  
When measuring current without the voltage test leads connected, you  
must select A for the phase reference (see Table 1).  
54  
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Accessories and Replacement Parts  
If the Tester still does not work, pack it securely and forward it, postage paid,  
to the nearest Service Center. Include a description of the problem. Fluke  
assumes no responsibility for damage in transit.  
At its option, Fluke will repair or replace a Tester under warranty. The Tester  
will be returned at no charge. Refer to the Warranty Card for warranty terms.  
If the warranty has lapsed, Fluke will repair and return the Tester for a fixed  
fee. Contact your nearest Service Center for information and prices.  
Accessories and Replacement Parts  
Service Manual  
The part number for the Service Manual is 601044.  
Accessories  
For a list of standard accessories included with the Tester, see “Unpacking”  
earlier in this manual. Optional accessories are as follows:  
80i-1000s  
C41s  
AC Current Probe  
Soft Carrying Case  
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Replacement Parts  
Parts that can be replaced by the user are shown in Table 5. Refer to the  
Service Manual for a complete list of replaceable parts.  
Table 5. Replacement Parts  
Description  
Battery (each, C cell, 4 required  
Battery door (with screws)  
Hook (tilt stand)  
Fluke PN  
423582  
936807  
936810  
PM9080  
936880  
Qty  
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RS-232 Serial cable (Model 41B)  
1
FlukeView 41 Windows English software (Model  
41B)  
1
39/41B Users Manual (English)  
39/41B Users Manual ( French)  
39/41B Users Manual (German)  
39/41B Users Manual (Spanish)  
39/41B Users Manual (Italian  
SW41 FlukeView Application Users Manual  
Quick Reference Guide, Fluke 39/41B  
Service Manual, Fluke 39/41B  
80i-500s AC Current Probe  
482287200916  
482287200918  
482287200917  
482287200921  
482287200919  
600855  
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1
1
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107653  
601044  
TL24 Test Lead Set  
TP 20 Test Probe Set  
AC 20 Test Clip Set  
80i-1000s AC Current Clamp (Optional)  
C41s Carrying Case (Optional)  
Use only specified replacement parts.  
-
56  
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Specifications  
Specifications  
Basic electrical specifications are defined over the temperature range from  
18°C to 28°C for a period of one year after calibration.  
Accuracy is specified as ([% of reading] + [number of units in least  
significant digit]).  
Frequency Range, Fundamental  
6-65 Hz and dc  
Minimum Input Levels  
5V rms or 1A rms  
Volts Measurements (True rms)  
Input Range: 5.0V to 600V rms (ac + dc)  
5.0V to +/-933V peak  
Basic Accuracy*:  
rms (ac + dc): +/-(0.5% + 2 digits)  
peak, dc:  
+/-(2% + 3 digits)  
* < 15V rms, add 2 digits  
Input Impedance: 1 M, balanced  
Crest Factor: > 3.0 below 300V, 1.56 @ 600V  
Amps Measurements (True rms)  
(1 mV/A) Isolated Input  
Input Range: 1.00 mV (A) to 1000 mV rms (A) (ac + dc)  
1.0 mV (A) to +/- 2000 mV (A) peak  
Basic Accuracy:  
rms (ac + dc):  
peak, dc:  
+/-(0.5% + 3 digits) + probe specs.  
+/-(2% + 4 digits) + probe specs.  
Input Impedance:1 M|| 47 pF  
Crest Factor:> 3.0 below 600 mV, 2.0 @ 1000 mV  
57  
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39/41B  
Users Manual  
Watts Measurements (Volt-Amps)  
(1 mV/A) Isolated Input  
Range: 0 W (VA) to 600 kW (kVA) average  
0 W (VA) to 2000 kW (kVA) peak  
Accuracy (ac + dc):  
Active W (VA): +/-(1% + 4 digits) + probe specs  
Harmonics Measurement Accuracy (Cursor Data)  
(Harmonic Level > 5% Using Smooth ~20)  
Volts:  
Fundamental to 13th Harmonic:  
13th to 31st Harmonic:  
+/- (2% + 2 digits)  
13th (+/- (2% + 2 digits)) -----  
----- 31st (+/- (8% + 2 digits))  
Amps* or Watts:  
Fundamental to 13th Harmonic:  
13th to 31st Harmonic:  
+/- (3% + 3 digits) + probe specs  
13th (+/- (3% + 3 digits) + probe  
specs) ---------- 31st (+/- (8% + 3  
digits)+ probe specs)  
* < 20A, add 3 digits  
Phase:  
Fundamental:  
2nd to 31st Harmonic:  
(±2 degrees) + probe specs  
2nd (±5 degrees) -- 31st (±20  
degrees) + probe specs  
Frequency Measurement Accuracy  
(Fundamental, 6.0 Hz - 99.9 Hz)  
6.0 Hz - 99.9 Hz:+/- 0.3 Hz  
58  
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Specifications  
Other Measurement Specifications  
Measurement Function  
Range/Resolution  
Accuracy  
Input Bandwidth: (-0.5 dB): DC 6 Hz to 2.1 kHz  
Crest Factor (CF): (Using  
Smooth 20)  
1.00 to 5.00  
4%  
Power Factor (PF):  
0.00 to 1.00  
0.02  
Displacement Power  
Factor (DPF):  
0.00 to 0.29  
unspecified  
0.04  
0.30 to 0.69  
0.70 to 0.89  
0.03  
0.90 to 1.00  
0.02  
Phase Measurement  
Range:  
-179 to 180 degrees  
K-Factor (KF) Model 41B:  
1.0 to 30.0  
10%  
Total Harmonic Distortion  
(THD)  
%THD-F:  
%THD-R:  
0.0 to 799.9  
0.0 to 99.9  
(0.03 x Reading + 2.0%)  
(0.03 x Reading + 2.0%)  
59  
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39/41B  
Users Manual  
Ranges and Resolution  
AC Volts  
AC Amps  
Watts  
Range  
(PK)  
Resolution  
Range  
(PK)  
Resolution  
Range Resolution  
(PK)  
20V  
0.1V  
0.1V  
0.1V  
0.1V  
1V  
2A  
5A  
0.01A  
0.01A  
0.01A  
0.01A  
0.1A  
0.1A  
0.1A  
1A  
50W  
1.0W  
50V  
100W  
200W  
500W  
1 kW  
1.0W  
100V  
200V  
500V  
1 kV  
10A  
1.0W  
20A  
1.0W  
50A  
0.01 kW  
0.01 kW  
0.01 kW  
0.1 kW  
0.1 kW  
0.1 kW  
1 kW  
1V  
100A  
200A  
500A  
1000A  
2000A  
2 kW  
5 kW  
10 kW  
20 kW  
50 kW  
100 kW  
200 kW  
500 kW  
1 kkW  
2 kkW  
1A  
1A  
1 kW  
1 kW  
1 kW  
1 kW  
60  
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Specifications  
General Specifications  
Size:  
9.2 x 3.9 x 2.5 inches (234 x 100 x 64 mm)  
Weight: 2.0 lbs (1 kg)  
Input Connectors:  
Voltage:  
2 shrouded banana jacks (4 mm)  
Current Probe: 1 shrouded BNC jack  
Battery:  
Type:  
4 Alkaline CCells ANSI/NEDA-14A, IEC-LR14  
(supplied)  
Operating Time: 48 hours, typical (continuous, without backlight)  
Alternate Battery:  
4 NiCad Cells, customer supplied and externally charged. The tester  
prevents battery reversal by turning itself off if battery voltage drops below  
4.0V dc.  
Temperature:  
Operating: 0 to 50°C (32 to 122°F)  
Storage: -20 to 60°C (-4 to 140°F)  
Temperature Coefficient:  
0.1 x Specified Accuracy per degree C  
(0 to 18 degrees C, 28 to 50 degrees C)  
61  
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39/41B  
Users Manual  
Humidity (noncondensing):  
Operating: 0 - 30°C:  
90%  
30 - 40°C: 75%  
40 - 50°C: 45%  
Storage:  
Altitude:  
Operating: 10,000 feet (3 km)  
90%  
Storage:  
40,000 feet (12 km)  
Shock & Vibration:  
per MIL-T-28800, class 3, sinusoidal, nonoperating  
Electro-Magnetic Compatibility:  
RF Emissions: EN 50081-1 Commercial Limits,  
VFG 243-1991  
RF Susceptibility: EN 50082-1 Commercial Limits  
Council Directive: Electromagnetic Compatibility Directive (89/336/EEC)  
Drip Proof and Dust Proof Case: per IEC 529, Section 3;  
IP 52 Dust-Protected, Drip Proof  
Display  
Type:  
Size:  
Super Twisted Liquid Crystal  
3.0 inch diagonal (76 mm)  
Resolution: 160 W x 128 H pixels  
Contrast:  
Backlight:  
User adjustable  
Yellow-green LED  
62  
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Specifications  
Safety  
Designed for 600V measurements on industrial power distribution circuits.  
Overload Protection:  
Voltage or Current Probe Input:  
Surge Protection:  
600V, maximum  
6 kV per IEC 1010-1  
Maximum Voltage Isolation to Earth: 600V from any terminal  
Protection Levels:  
IEC 1010-1, Pollution Degree 2, Installation  
Category III, Material Group II, 600V  
Protection Class:  
Protection Class II as described in IEC 1010-1, Annex H (Double or  
Reinforced Insulation).  
Waveform Memory (Model 41B)  
Eight nonvolatile memories store 2048 sampled points of waveform data for  
both Voltage and Current inputs for later recall or sending to a computer.  
EIA-232-E (RS-232) INTERFACE (Model 41B)  
Optically-Isolated, 1.2, 9.6, or 19.2k baud rate.  
Printer graphical output in either Epson or HP format. Text data is sent is  
ASCII format (SEND). Waveform, Data, and Picture formats may be remotely  
accessed. Remote Trigger function.  
63  
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39/41B  
Users Manual  
64  
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