Fluke 39, 41B 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.

Advanced Test Equipment Rentals

www.atecorp.com 800-404-ATEC (2832)

®

E

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9

8

1

LIMIT E D WARRANTY & LIMITATION OF LIABILITY

Each Fluk e produc t is warranted to be free from defect s in material and work m anship under
normal use and serv i ce. The warranty peri od i s one year and begins on the dat e of shipment.
Parts, product repairs and se rvices are warranted f o r 90 day s. This warrant y extends onl y to the
original buyer or end-user customer of a F l uke authorized resel l er, and does not apply t o fuses,
disposable bat t eri es or to any product whi ch, in Fluke’s opini on, has been misus ed, altered,
neglected or damaged by accident or abnormal conditions of operat i on or handl i ng. Fluke war­rants that software will operate substantially i n accordance with i ts functi onal specific ations for
90 days and that i t has been properly recorded on non-defective m edi a. Fluke does not warrant
that software will be error free or operate without interruption.

Fluke authorized resellers s hal l extend this warrant y on new and unused products to end-user
customers only but have no authority to ex tend a greater or different warranty on behalf of
Fluke. Warranty support is available if produc t is purchased through a Fluke authorized sales
outlet or Buy er has paid the applicabl e i nternational price. F l uke reserves t he ri ght to invoic e
Buyer for im port ation costs of repair/replac em ent parts when product purchased in one country
is submitted for repair in anot her country.

Fluke’s warranty obligation i s limited, at Fluke’s option, t o refund of the purchas e pri ce, free of
charge repair, or replac em ent of a defective product which i s returned to a Fluk e aut hori zed
service center within t he warranty period.

To obtain warranty service, c ontact your neares t Fluke authorized service center or send the
product, wit h a description of t he di fficult y, postage and ins urance prepaid (FOB Dest i nat i on), to
the nearest Fluke authorized service center. Fluke ass umes no risk for damage in transit .
Following warranty repai r, the product will be returned to Buyer, transportation prepaid (F OB
Destination). If Fluk e det erm i nes that the fai l ure was caused by m i suse, alterat i on, accident or
abnormal conditi on of operation or handling, Fluke will provide an estimate of repair costs and
obtain authorization before comm encing the work. Fol l owi ng repai r, the product will be returned
to the Buyer transportation prepai d and t he Buyer will be billed for the repair and return trans­portation charges (F OB Shipping Point ).

THIS WARRANTY IS BUYER’S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY
IMPLIED WARRANTY O F M ERCHANTABILITY OR FITNESS FOR A PARTICULAR PUR­POSE. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, WHETHER
ARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE
OR ANY OTHER THEORY.

Since som e countries or states do not allo w li mitation of the term of an impl i ed warrant y, or
exclusi on or l i m i t ation of incident al or consequential damages, the limi tations and exclusions of
this warranty may not apply t o every buyer. I f any provisi on of this Warranty is held inval i d or
unenforceable by a court of compet ent jurisdiction, such hol di ng will not affect the validity or
enforceability of any other provision.

Fluke Corporation Fluke Europe B.V.
P.O. Box 9090 P.O. Box 1186
Everett WA 5602 B.D. Ei ndhoven
98206-9090 The Netherlands

SERVICE CENTERS

To locat e an a uthorized service center, visit us on th e World Wi de Web:

http://www.fluke.com

or call Fluke using any of the phone numbers listed below:

[phone] in U.S.A. and Ca nada

[phone] in Eur ope

[phone] from other countries

Table of Contents

Title Page

Safety ................................................................................................ v

About This Manual............................................................................. 1

Uses for the Tester............................................................................. 1

Unpacking.......................................................................................... 2

Terminology Used in This Manual...................................................... 5

Battery Considerations ....................................................................... 6

Memory Retention.............................................................................. 6

Automatic Power Down...................................................................... 6

Getting Acquainted with Your Tester ................................................. 7

Input Connections............................................................................... 9

Using the Voltage Test Leads........................................................ 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

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

List of Tables

Table Title Page

1. Key Descriptions...................................................................... 15

2. Status Line............................................................................... 20

3. Screen Abbreviations................................................................ 21

4. Special Messages ..................................................................... 24

5. Replacement Parts.................................................................... 56

iii

List of Figures

Figure Title Page

1. Tester and Accessories............................................................. 3

2. Additional Items (Model 41B).................................................. 4

3. Getting Acquainted.................................................................. 8

4. Measurement Connections (1

5. Three-Phase Measurement Connections

(For Balanced Circuits, 3

6. Three-Phase Measurement, Balanced or Unbalanced Connections

P

, 3-Conductor, D or Y)................................................... 12

(3

7. Three-Phase Measurement, Balanced or Unbalanced Connections

P

, 4-Conductor)................................................................... 13

(3

8. Keypad..................................................................................... 14

9. Display Screen......................................................................... 19

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. Distri buti on Transformer (1

23. Distri buti on Transformer (3

24. Receptacle Load Center (Neutral Current Measurement).......... 49

25. Generator Set........................................................................... 50

26. Adjustable Frequency Motor Drive........................................... 51

27. Battery Replacement ................................................................ 53

P

) .............................................. 10

P

, 3-Conductor, D).......................... 11

P

Watts Text Screen) ................... 47

P

, 3C Watts Text Screen) ............. 48

iv

Using Your Tester Safely

!

Warning

To avoid electric shock, use on ly the test lead s suppli ed
with the Tester. Use 600V rated probe tip adapters.
(“600V” is printed on the equipment.) Remove all test
leads that are not in u se.

Use only the 80i-500s ac current probe or a safet y­designed equival ent (such as the Fluke Model 80i-1000s)
that is rated for 600V on both th e jaws and th e measuring
secondary. Remove any current probe that is not in use.

In this manual, a WARNING identifies conditions and actions that pose haz­ard(s) to the user. A Caution identifies conditions and actions that may dam­age 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 ser vice th e T es ter or the current p robe.

!

DANGEROUS VOLTAGE

AC-ALTERNATING CURRENT

DC-DIRECT CURRENT

Either DC or AC

EARTH

CAUTION see explanation in
manual

Equipment protected throughout
by DOUBLE INSULATION or
REINFORCED INSULATION

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

• When using the voltage test leads, keep your fingers away from the probe

conta cts. Keep your fi ngers behind t he fin g er guards on th e p robes.

• Use cauti on wh en me asuring above 60 V -dc or 30V -ac rms . Such voltag e s

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 t han
600V. Use extreme caution when clamping t he current probe around un­insulated conductors or bus bars.

• Keep your fingers behind the finger guar d on t he 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

1

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 curren t inputs at power line
and harmonic frequencies. Using these inputs, the Tester automatically
calculates power and a wide ran ge 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 harm onic frequency measurements (to about 2
kHz) are also possible.

Th e Teste r ca nn ot measure fre quencies above abou t 2 kHz. (Us e the
ScopeMeter test tool to measure fast power transients.)

39/41B

Users Manual

2

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:

• User s 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

• FlukeView 41 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.

Unpacking

3

POWER HARMONICS
ANALYZER

41

®

TL-24

Test Leads

(Set of two. Red and Black)

80i-500s

AC Current

Probe

AC-20

Test Clip

TP-20

Test Probe

a2f.eps

Figure 1. Tester and Accessori es

39/41B

Users Manual

4

RS-232 Cable

Companion Software

3.5-Inch Floppy Disks (FlukeView 41)

a3f.eps

Figure 2. Additi onal Items (Model 41B)

Terminology Used in This M anual

5

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”

D

.

• “Wye”

Y

.

• “N” is Neutral.

•

e

is Earth ground.

• “AC Current Probe” or “Probe” refers to the 80i-500s, which can also be

called a “curren t clam p”.

39/41B

Users Manual

6

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

b

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 misaligne d or damaged. R eseat t he bat t erie s if the y
are misaligned; replace the batt erie s if the y are damaged.

Memory Retention

When ever you remove power from the Tester (pressing O 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 in formati on, and any stored waveforms (Model 41B).
However, if you remove power when Record is active, the Tester loses all
recor d ed va lues.

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 Fluk e Service Center .

Getting Acquainted with Your Test er

7

Getting Acquainted with Your Tester

While referring to Figure 3, perform the following key presses to familiarize
yourself with basic tester operations.

1.

o

to turn the Tester on.

2.

c

(brief press) and

<

or

>

to cha nge screen con tras t.

C

(hold 1 second) to turn the backlight on or off.

3.

F

to select a measurement function (Volts, Amps, Watts).

4.

M

to select a screen mode (Waveform, Harmonics, Text ).

5.

R

to start recording measurements

<

or

>

to select NOW, MAX, AVG, MIN recording.

F

to select a different measurement function while recording.

R

to exit recording.

6.

o

to turn the Tester off.

39/41B

Users Manual

8

POWER HARMONICS

ANALYZER

41

®

5

4

3

2

16

a4f.eps

Figure 3. Getting Acquainted

Input Connections

9

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 measuremen t uses a BNC connect or 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 neutr al 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 Curren t
Probe. If you use another pr obe, 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

D

Connect the red test lea d to th e phas e conductor used by th e C u rrent
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-fr ee voltage m easurements , is preferred when you are al so
using the Current Probe.

Note

Figure 4 shows suggested test lead and current probe usage.

39/41B

Users Manual

10

Using the Current Probe

The accuracy of current an d power readings depends on properly using the
80i-500s Current Pr obe. The accuracy specifications in th i s 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 measu rement. Press

G

to verify the Current Probe
orientation. If the resulting VA Check Screen generally extends from the
lower left to the upper righ t of the screen, the Cur rent Probe is connected
properly.

• Always clamp the Current Probe around a single conductor or parallel

conductors that are ca rrying cur rent for the same p hase.

• Always center the conductor in the Current Probe alignment marks.

POWER HARMONICS
ANALYZER

41

®

Line

N

Black

Red

Load

a5f.eps

Figure 4. Measurem ent Connections (1P)

Three-Phase Power M eas ur ements

11

Three-Phase Power Measurements

Refer to Figures 5, 6, and 7 for various ways to measure total power in a
three-phase system. Th e

W 3

P

3C displa y screen shows the three-phase
calculation for the connection shown in Figure 5. All other screens and
functions show only single-phase data.

φ

3

POWER HARMONICS
ANALYZER

41

®

Black

Red

Load

φ

2

φ

1

W

1

a74f.eps

Figure 5. Three-Phase M easur em ent Connect i ons ( For Bal anced Ci r cuits,

3

P

, 3-Conductor, D)

39/41B

Users Manual

12

φ

3

POWER HARMONICS
ANALYZER

41

®

Black

Red

Load

POWER HARMONICS
ANALYZER

41

®

φ

2

φ

1

Red

W

1

W

2

W

total

= W1 + W

2

PF =

W1 + W

2

3

(VA

1

+ VA2)

/2

a6f.eps

Figure 6. Three-Phase Measur em ent , Balanced or Unbalanced

Connections (3

P

, 3-Conductor, D or Y)

Three-Phase Power M eas ur ements

13

N

POWER HARMONICS
ANALYZER

41B

®

Black

Red

Load

φ2

Red

POWER HARMONICS
ANALYZER

41B

®

Red

φ1

POWER HARMONICS
ANALYZER

41B

®

φ3

Black

Black

W

total

= W1 + W2 + W

3

W

1

W

2

W

3

a7f.eps

Figure 7. Three-Phase Measur em ent , Balanced or Unbalanced

Connections (3

P

, 4-Conductor)

39/41B

Users Manual

14

Keypad

Refer to Figure 8 and Table 1 for keypad operation.

14

13

12

11

7

6

5

4

3

2

10

1

9 89 8

a8f.eps

Figure 8. Keypad

Keypad

15

Table 1. Key Descriptions

Number Symbol Name & Description

1

O

Power
Press once to turn the Tester on; a t est 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 power­up configuration each time you turn it on.

2

<
>

Arrow Keys

These keys have multiple uses. Refer to other
areas for specific

<

and

>

descriptions.

3

c

Contrast/Backlight
Tap briefly to adjust contrast (with

< >

);
tap again to store setting and r et ur n t o nor m al
operation. Press and hold

C

for about 1 second

to turn the backlight on or off.

4

M

Screen Mode

Press to cycle the T ester t hroug h Waveform,
Harmonics, and Text Screen Modes. You select
the Measurement Function (Volts, Amps, or
Watts) independently of the Screen Mode.

39/41B

Users Manual

16

Table 1. Key Descriptions ( cont )

Number Symbol Name & Description

5

r

Range (Waveform and Text)
Press

r

momentarily to start manual ranging
(MAN) for all Measurement Funct ions (V, A, W).
Continue momentary presses to cycle thr ough
the ranges for the selected M easur em ent
Function only. (Ranges do not change for the
other two Measurement Funct ions. ) Press and
hold about 1 second to return to aut or anging
(AUTO) for all Measurement Funct ions (V, A, W).
The Tester always begins autoranging at power­up.

Range (Harmonics)
Press

r

momentarily to cycle from 100% to
10%, 20%, 50%, and back t o 100% . O ther
harmonics screen ranges and voltage or curr ent
measurement ranges do not change while in
harmonics display.

6

G

VA Check
Press at any time for a check of t he volts ver sus

amps signature at the test point. Press

G

a
second time to return t o nor m al operation. See
also “VA Check” section.

7

m

Memory (Model 41B)
Press to access the Waveform Stor age Scr een.

Press

m

a second time to return t o nor m al
operation. Also, you can clear all stored
waveforms by holding

m

pressed as you

press

o

on. See also “Storing and Recalling

Measurements.”

Keypad

17

Table 1. Key Descriptions ( cont )

Number Symbol Name & Description

8

f

Phase Reference
Press to select volts or amps as the display

phase reference. Voltage refer ence is t he
standard configuration. For cur r ent only
measurements, press

f

to set AP. To
change the power-up phase reference, see
“Power-Up Configuration” later in this manual.

9

s

Send (Model 41B)
Press to print a test repor t of calculated

measurements to a print er or PC. ( The Test er
displays SEND.) Do not press

s

when
FlukeView 41 application software is in use. See
“Sending to a PC”.

10

S

Smooth
Smooth allows you to average waveforms,

resulting in a more stable screen and increased
accuracy of computations. ( See “Specifications.”)
Press

S

four times to step t hr ough t he

Smooth selections (

~

2s, ~5s, ~10s,

~

20s in the top status line). Pressing

S

a

fifth time retur ns the Tester to normal operat ion.

39/41B

Users Manual

18

Table 1. Key Descriptions ( cont )

Number Symbol Name & Description

11

p

Print (Model 41B)
Press to print a screen dump to a pr inter . (The

Tester displays

p

.) To stop printing, press any

key. Do not press

p

when FlukeView 41
application software is in use. See “Sending to a
PC”.

12

R

Record
Press to start Record. Press

R

a second time
to resume normal operat ion. You can also ret ur n
the Tester to its standar d ( f actory-programmed)
configuration by holding

R

as you press on

o

.

13

E

Hold
Press

E

to freeze the screen. (

H

appears in
the top line.) You can now observe all screens for
a single measurement. Press

E

again to

resume normal operation.

E

serves as the “ENTER” key when used with
some other screens. Also, you can access the
Power-Up Configuration Screen by pressing

E

as you press o on.

14

F

Measurement Function
Press to cycle the Tester through Volts, Am ps,

and Watts Measurement Functions. You select the
Screen Mode (Waveform, Harmonic, or Text)
independently of the Measurement Funct ion.

Display Screen

19

Display Screen

The screen consist s of the following three a reas (s ee Figur e 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 Messa g es . See Tabl e 4 .

Cursor Data

Status Line (see Table 2)

Measurement Area

(see Table 3)

Low Battery Condition

>30V rms Input or in Hold ( )

Special Screen Messages
(see Table 4)

a9c.eps

Figure 9. Display Screen

39/41B

Users Manual

20

Table 2. Status Line

H

Hold active (screen frozen). L appears in lower left screen
to indicate possible high voltage input that is not sensed
during Hold.

VP

AP

Phase Reference Selection. The volts input or the current
input is the reference for det er m ining phase shift. Select

AP

when measuring current only with voltage test leads not

connected.

~

2s

~

5s

~

10s

~

20s

Smooth Selection. Smooth is active with averaging times of
2, 5, 10, or 20 seconds. A higher num ber signifies a mor e
stable measurement reading.

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 Cur r ent Pr obe
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 r eadings.

MAN Test er does not switch r anges aut om at ically.
MEMX Memory location (X) last accessed. (X = 1 t o 8)
SEND Send is active (prints test report s, M odel 41B.)
PRNT Print is active (prints screen dumps, M odel 41B.)

Display Screen

21

Table 3. Screen Abbreviati ons

Screen Usage Name and Description

°

d

Phase Angle degrees. (± 180°)
Measures time from t he posit ive zero cr ossing of t he

fundamental of the selected volts or am p

P

REF. 360°
represents one cycle at the fundam ent al or select ed
harmonic frequency. A positive sign indicates that the
positive zero crossing of the measured cycle comes
earlier than (leads) that of t he r ef er ence.

Note

For the Watts

h

screen, the phase angle always shows the

relation of Amps to the Volts

P

REF at the same frequency. Cos

φ

calculations are based on this defi nit i on.

A RMS Amps RMS (includes dc component if using dc capable

current probe).

A PK Peak Amps (1/2 peak-to-peak value).
A DC Amps DC.
A HM For a current waveform, A HM identifies the total

harmonic current present .

A LEAD Amps Lead Volts

Evidence of capacitive reactance in the system; t he
current waveform precedes the voltage waveform.

A LAG Amps Lag Volts

Evidence of inductive reactance in the system; the
current waveform occurs after the voltage waveform.

CF Crest Factor

Ratio of a waveform’s peak value to its rms value.

39/41B

Users Manual

22

Table 3. Screen Abbreviations (cont)

Screen Usage Name and Description

DPF Displacement Power Factor cosφ fundamental

The ratio of the active power (W) to the apparent power
(VA rms) at the fundam ental frequency. Equivalent to
cos

φ at that frequency. Traditional power factor f or linear

loads.

HZ Waveform Scr eens: Fundam ent al f r equency in hert z

Harmonics Screens: Frequency of selected harm onic in
hertz

KF K-Factor

A load current waveform rating calculation that r at es the
waveform’s capability to produce harmonic-related heat
loss in transformers and other m agnet ic component s.
Used to select transformer K- r at ings that match load
current K-factor m easur em ent s.

PF Power Factor

Ratio of active power to apparent power ( including all
harmonics).True power fact or for all loads, linear and
non-linear.

% THD-F Total Harmonic Distortion (as % of Fundament al)

Defines amount of harmonic distort ion as a percent age
of the waveform at t he fundamental frequency.

% THD - F = rms of harmonics (less fundam ental)

rms of fundament al

% THD-R Total Harmonic Distortion (as % of rms t ot al)

Defines amount of harmonic distort ion as a percent age
of the rms value of waveform s at all fr equencies
(fundamental and harmonics).

% THD - R = rms of harmonics (less fundamental)

total rms

Display Screen

23

Table 3. Screen Abbreviations (cont)

Screen Usage Name and Description

V RMS Volts rms (includes dc component).

COS

P}

Cosine of the angle between the voltage and the current
at any single frequency.

V PK Peak Volts (1/2 peak-to-peak value) .
V DC Volts DC.
V HM Harmo nic Vo lts RMS

For a voltage waveform, V HM identifies the total
harmonic voltage present.

VA, KVA (Kilo) Volt Amps

Apparent power: a value that the Test er calculates by
multiplying the rms value for current by t he r m s value for
voltage.

VAR, KVAR (Kilo) Volt Amps Reactive

The reactive power component of t he f undam ent al
frequency.

W, KW Active Po wer

The average power dissipated (also called real power).

39/41B

Users Manual

24

Table 4. Special Messages

<CONTRAST>

Press

<

or

>

to adjust contrast. Press C to exit contrast contr ol and

store current setting.

* CALIBRATION ERROR *

CONTACT FLUKE SERVICE

The Tester has detected a calibration err or at power- up. Since erroneous
readings result, the Tester displays this message unt il calibration is verified.
Return the Tester to a Ser vice Center f or r epair or calibrat ion. See “User
Maintenance” later in this manual.

STOP AVG AT 48 HOURS

In Record, averaging stops after 48 hour s. Not e t he aver age value shown;
then, press

R

once to return to nor m al operat ion or t wice to begin

recording with new values.

* PRINTING *

PRESS ANY KEY TO STOP

On Model 41B, this message appears when you press

p

or

s

. Press

any key to resume normal operation.

Functions and Scr een M odes

25

F M

Functions and Screen Modes

The Tester u s es 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 scr een, you onl y need to pr ess a few keys to see
everything there is to know about power (or just voltage or current) at the test
point. Cycle throu g h the choices by pr es sing either (or both) of these keys.

The Tester p reser ves selections th at are acti ve i n one screen as you switch to
anot her s creen. For exa mple, if you are mea s u ring harmonic

7

in the Volts
Harmonic Screen and change function, the Tester continues measuring
harmonic

7

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 (

AUTO on) to accommodate the

magnitude of the input. The horizontal scale represents 0 through 360 degrees
(one cycle) of the fund amen tal fr equency.

With a waveform scr een d i sp l a yed, 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

P

, 4-wire system supplying non-linear loads).
To obtain the frequency of a harmonic, sel ec t the harmonic scree n
and use

<

and

>

to position the cursor arrow under the

harmonic of interest.

39/41B

Users Manual

26

a10c.eps

Figure 10. Waveform Screens

Functions and Scr een M odes

27

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
ha rmonic . Sele c t a harmonic by pressing

<

and

>

to move the cursor

along the bottom scale. DC,

1

(the fundamental frequency), and harmonics

2

through 15 appear on the first screen. Harmonics 16 through

31

appear on

the second scr een. Switch between harmon ics screens by pressi ng

>

when 15 is selected on t he fir st screen or

<

when 16 is selected on t he

second screen.
At the top of the screen, the per centag e s hown compares t he select ed 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 fr eq uency of the selected harmonic is shown i n Hert z
below the percentage.

Note

The watts harmonic screen always uses the %F (fundamental) definition.

39/41B

Users Manual

28

a12c.eps

Figure 11. Harmonics Scr eens

Functions and Scr een M odes

29

The harmonics overload screen (Figure 12) appears if either of the following
conditions exists:

• There is no in p ut on t he ph ase reference channel. F or exam p le, there i s

no voltage input when

VP

is selected.

• There is no input on one of the measurement channels (volts or amps).

a11s.eps

Figure 12. Harmonics O ver load Screen

39/41B

Users Manual

30

Harmonics Zoom Mode

Use

r

to scale a selected harmonic bar graph display (Figure 13) to more
easily read the harmonic information. This mode automatically scales the bar
graph displa y to 100%, 50%, 20%, or 10% based on the largest harmonic
value; the magnitude of the fundamental is ignored. Using

r

in harmonic
screens affects t he disp lay only and does n ot affect measurement range
control. To change measurement ranges, the display must be in waveform or
text screen s.

An a rrow at the t op of t he bar indi cates that the har monic has exceed ed its
scale. The percent of harmonic and digi tal va lues are corr ect even when th e
harmon ic bar ex ceed s its scale.

The cursor selection displays the percent of the harmonic and its value in
digital form.

a84s.eps

Figure 13. Harmonics Zoom Scr een

Functions and Scr een M odes

31

Text Screen Mode

Text screens (Figure 14) present digital information for values measured or
computed by the Test er. Arrows ap pear on th e p rim ary text screen s igni fying
that you can press

>

to access a s econdary text screen. In wat ts, the
prim a ry screen shows the single-ph ase (1φ) power rea d ing. Th e secondary
(3φ, 3C) screen shows the estimates of the total three-phase performance from
one single-phase reading.

39/41B

Users Manual

32

a13c.eps

Figure 14. Text Screens

VA Check Screen

33

G

VA Check Screen

Press

G

at any time to access the VA C heck screen, which d ispla ys volt s

graphed against amps. Press

G

a second time to exit the VA Check screen

and return to your starting point.
With the V A Check screen, th e Tester d ispla ys 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 th e phas e shift of the fun d amen t al
frequency and d etect the existence and sever ity of nonl inearit y caus ed by
harmonics. It could be that the VA Check screen may simply show that you
have clamped the Current Pr obe in the wrong dir ection. Figure 15 shows
some typica l VA Ch eck s igna tures .

When the Tester is set for autoranging (

AUTO), ranges for the vertical and

hor i zontal scales on the VA Check scr een are adjusted automaticall y 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

r

for
1 second) or select an appr op ria t e man u al r ange i n eit her V or A, or bot h
functions (i.e., press

r

briefly for each r ange change).

Note

V or A ranges cannot be changed while in the VA Check screen.

39/41B

Users Manual

34

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 Signatur es

Recording Measurements

35

R

Recording Measurements

Press R to begin recording readings for all measurement functions. Then
press

<

or

>

to cycle through the s creens for th e functi on pres ently
selected. You can also switch between measurement functions while in
Record mode. (See Fig ure 16 for an overview of possible record screens.) For
any function, the Tester displays screens in the following order:

•

NOW The p resen t readings . This screen alwa ys ap p ears fi rst wh en you

start Record .

•

MAX The maximum values measured since you started Record.

•

AVG The averag es of val ues measu red si nce you started

Record. (Average values stop updating after 48 hours of
conti nuous record operation.)

•

MIN The minimum values measured since you started Record.

When in Record, only the following keys are acti ve:

E<>

C

F

Press

R

a second time to exit Record. This action discards all recorded
values and returns to the p revious measur ement s creen. The Tester beg ins
storing a new set of values each time you start Record.

The Tester loses recor ded valu es if the ba tter ies dischar g e too much. If

b

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

b

comes on. ) Cha nging the batt ery erases the Record memory.

You can access 12 differen t recor d s creens:

NOW, MAX, AVG, and MIN for

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 approxi mate ly
every 500 ms (0.5s). It is not intended to capture transients, nor is it
able to capture single events on the power line.

39/41B

Users Manual

36

V
A

W

a15c.eps

Figure 16. Record Screens

Power-Up Configuration

37

E

+

O

Power-Up Configuration

The Tester has two types of configurations: standard an d 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 Curren t Probe is selected.
OTHER specifies any current probe other than the 80i-500s. The Tester

has been calibrated to provide either compensation for the 80i-500s or a
flat respon s e for other pr obes.

•

P

REF V Voltage Phase Reference select ed .

For Model 41B,

KBAUD 9.6 is the standard configuration for Print or Send,

and

EPSON is the standard confi guration . Th e Tester always selects

autorangin g a t 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

E

while pressing O to turn the Tester on. The configuration

screen appears. (See Figure 17.)

2. Press

<

and

>

to highlight different items on the same line. Press

E

to select the currently h ighl ighted item an d p roceed to t he nex t

line.

39/41B

Users Manual

38

3. To exit the screen, press

E

to select a highlighted item on the last line
and store all selections you have made during this configuration session.
The Tester begins normal oper ation using these selections. The Tes ter
also automatically sets up to these selections at the next power-up.

To exit the screen without making changes, press

E

to cycle through

all selection lines.

4. To restore the st andard configurati on, press

R

as you press O on.

(On Model 41B, this action also clears waveform memory.)

a16c.eps

Figure 17. Configur at i on Scr eens

Storing & Recalling Measur ements (Model 41B)

m

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 scr een informa tion , except Record, wh en you
recall the waveform.

The Tester stores waveforms in nonvolatile memory. A low battery condition
or a bat ter y change d oes not jeopard ize the s tore d waveforms.

Referrin g t o Figure 18, use the following procedure to store and r ecall
measurements:

m

1. Press

existing waveform and sh ows the screen in Figure 18.

2. Press

CLEAR). T hen p ress

or

to access t he waveform s torag e s creen. Th e Tester freezes t he

<

or

>

to select the desired operation (RECALL, STORE,

E

.

3. Select one of the eight memory locations by pressing

box one through eight. An underscore appears below a filled memory
location.

Figure 18. Memor y Screen

<

or

>

to

a17s.eps

39

39/41B

Users Manual

40

4. STORE a waveform set (and associated data) into the boxed memory

location by pressing

E

. If the locat ion was em p ty, an underscore now
appears below the memory location number. If the underscore already
existed,

STORE overwrit e s the old waveform.

CLEAR the selected memory location (waveform and associated data)

from the boxed memory location by pressing

E

.

RECALL the selected memory location to view the contents directly by

pressing

E

.

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

E

.

Notes

You can clear all memory locations by holdi ng

m

pressed while

you press

o

on.

MAX, AVG

, and

MIN

information in the RECORD mode cannot be

stored in a memory location.

Using the Serial Cable (Model 41B)

41

Using the Serial Cable (Model 41B)

Model 41B communicates with a PC or printer (Figure 19) through an
isolated RS-232 port. Th e Tester outputs data t hrough the RS-232 port when
you press

p

or

s

or when you send a command from the PC.

Note

The side of the optical i nte rfac e c onne ct or 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.

39/41B

Users Manual

42

POWER HARMONICS

ANALYZER

41

®

a18f.eps

Figure 19. Serial Comm unications (Model 41B)

Printing (Model 41B)

43

p

Printing (Model 41B)

Pressing

p

sends data for the present screen to a printer. Printer type

compatibility is selected on the configuration screen as

Epson or HP.

The Tester displays

PRNT and the following message appears:

* PRINTING *

PRESS ANY KEY TO STOP

Press any key to abort printing; all keys then return to their normal functions.

s

Sending to a Printer or PC (Model 41B)

Press

s

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

p

or

s

while printing or using FlukeView 41

software. In either case, pressing

p

or

s

disrupts

communications.

Using PC Software with the Tester (Model 41B)

FlukeView 41 software is provided for Windows. Refer to the operatin g
instructions provided with the software.

39/41B

Users Manual

44

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 b et ween closely spaced live part s. Avoid making
connections to feeder conductors or bus bars at elevated
potentials. Whenever possible, make connections to the
outpu t side of a circu it breaker, wh ich can provide better
short circuit protection.

Applications

45

MOTOR L.C.

LIGHTING L.C.

UTILITY

XFMR

Plant

Switch

Gear

Adjustable
Frequency

(Speed) Motor

Drive

Distribution

Transformer

Receptacle

Load Center

230V

120V

a19f.eps

Figure 20. Typical Appl i cations

39/41B

Users Manual

46

Plant Switch Gear (Service Entrance)

Measure current, load balance, and total harmonic distortion. Refer to Figure

21. Press

f

to select curr ent (AP) for the disp lay pha s e reference.

POWER HARMONICS
ANALYZER

41

®

®

a20f.eps

Figure 21. Plant Switch Gear

Applications

47

Distribution Transformer

Measure Power Factor, K Factor, power, neutral current, neutral frequency,
and load balance between phases. Refer to Figures 22 and 23.

POWER HARMONICS
ANALYZER

41B

®

I

23

N1

2

3

a21f.eps

Figure 22. Distribution Transform er ( 1P Watts Text Screen)

39/41B

Users Manual

48

POWER HARMONICS
ANALYZER

41B

®

I

23

N1

2

3

a82f.eps

Figure 23. Distribution Transform er ( 3P, 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.

Applications

49

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 cur rent and frequency, and harmonic distortion.

Measure in p u t current, cr est factor , an d harmonics for PC, copier , printer,
and s ingl e phas e UPS. Most elect roni c equipm ent l oa d s are nonli near due to
their use of switching-type power supplies.

Black

POWER HARMONICS
ANALYZER

41B

®

Red

OFF

ON

a22f.eps

Figure 24. Receptacle Load Center ( Neut r al Curr ent M easur em ent)

39/41B

Users Manual

50

Generator Set

Measure for excessive current , proper freq u ency (adjust generator speed) , an d
other general uses. Refer to Figure 25. (Small generator shown.)

POWER HARMONICS
ANALYZER

41B

®

a23f.eps

Figure 25. Generat or Set

Applications

51

Adjustable Frequency (Speed) Motor Drive

Measure input and output curr en t and current frequency. Refer to Figure 26.
The Tester measures th e ou tput cu rrent fr eq u ency of the drive. (O u tput
current pr ovides the most stable frequency measurement.) Input power and
harmon ic current s can also be measu red. Press

f

to select curr ent AP for

the d ispla y r eference.

OUT

POWER HARMONICS

ANALYZER

41B

®

IN

BAC

OUTPUT

213

INPUT

OUTPUT

INPUT

BAC

OUTPUT

213

INPUT

a24f.eps

Figure 26. Adjustable Frequency Motor Drive

39/41B

Users Manual

52

User Maintenance

Cleaning

Clean your Tester with a damp cloth and a mild detergent. Do not use
abrasives, solvents, or al cohol.

Fuse Replacement

The Tester u s es electr onical ly protect ed inpu ts; n o fuses are required.

Battery Replacement

!

Warning

!

To avoid electrical sh ock, disconnect the voltage test
leads and the current probe before replacing the batteries.

The Tester mu st be disconnected from all sources befo re
you can open it for any adjustmen t , 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 inter nal rechargi ng.)

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 t o Figur e 27, use the foll owing procedur e to repl ace the ba tter ies:

1. Press

O

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 fa ce down on a nona brasive su rface. Loosen th e two

screws with a flat-blade screwdriver.

User Maintenance

53

4. Lift the battery access lid away from the Tester.

5. Replace the C cells (a lkal i ne or recha rged NiCad) as shown in Fi g u re 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 Repl acem ent

39/41B

Users Manual

54

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 Wor k ” for instructions on returning the unit for repair.

If the instrument flashes a dark test pattern and then appears blank:
Tap

C

, then hold

>

down for several seconds. A normal screen displa y

should appear. Adjust to the desire d c ontra st, t hen t a p

C

again to store the

setting.

If the s creen is blank (n o d ark fl ash):
Check the batteries. If t he batteries read bel ow 1. 1V, r ep lace them. I f 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 Test er does n ot wor k, ma k e the foll owing basic checks:

• Examine the case for physical damage. If you detect damage, contact a

Fluke Service Center . (Refer t o t he lis t of service centers at the end of t his
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 correct ly.

• When measuring current without the voltage test leads connected, you

must select A

P

for the phase refer ence (see T able 1).

Accessories and Replacem ent Parts

55

If the Tester still does not work, pack it securely and forward it, postage paid,
to th e nearest Ser vice Cent er. Includ e a descr iption of the p roblem. F luke
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 Cen ter for informati on an d pri ces .

Accessories and Replacement Parts

Service Manual

The part n um ber for the Service Manual is 601044.

Accessories

For a list of st anda rd acces sories i nclud ed with t he Test er, see “Unpacking”
earlier in this manual. Optional accessories are as follows:

• 80i-1000s AC Current Probe

• C41s Soft Carrying Case

39/41B

Users Manual

56

Replacement Part s

Parts th at can be replaced by the u s er are shown in Table 5. Refer to the
Service Manual for a complete list of replaceable parts.

Table 5. Replacement Part s

Description Fluke PN Qty

Battery (each, C cell, 4 required 423582 1
Battery door (with screws) 936807 1
Hook (tilt stand) 936810 1
RS-232 Serial cable (Model 41B) PM9080 1
FlukeView 41 Windows English software (Model

41B)

936880 1

39/41B Users Manual (English) 482287200916 1
39/41B Users Manual ( French) 482287200918 1
39/41B Users Manual (German) 482287200917 1
39/41B Users Manual (Spanish) 482287200921 1
39/41B Users Manual (Italian 482287200919 1
SW41 FlukeView Application Users Manual 600855 1
Quick Reference Guide, Fluke 39/41B 107653 1
Service Manual, Fluke 39/41B 601044 1
80i-500s AC Current Probe 1
TL24 Test Lead Set 1
TP 20 Test Probe Set 1
AC 20 Test Clip Set 1
80i-1000s AC Current Clamp (Optional) ­C41s Carrying Case (Optional) -

! I

Use only specified replacement parts.

Specifications

57

Specifications

Basic electri cal speci fi cations ar e d efi ned 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

Ω, balanced

Crest Factor: > 3.0 below 300V, 1. 56 @ 600V

Amps Measurements (True rms)

(1 mV/A) Isol at ed I nput

Input Range: 1.00 mV (A) to 1000 mV rms ( A) ( ac + dc)

1.0 mV (A) to +/- 2000 m V ( A) peak

Basic Accuracy:

rms (ac + dc): +/-(0.5% + 3 digits) + probe specs.
peak, dc: +/-(2% + 4 digits) + probe specs.

Input Impedance:1 M

Ω || 47 pF

Crest Factor:> 3. 0 below 600 mV, 2. 0 @ 1000 m V

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Watts Measurements (Volt-Amps)

(1 mV/A) Isol at ed I nput

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% Usi ng Smoot h ~20)

Volts:

Fundamental to 13th Harmonic: +/- (2% + 2 digits)
13th to 31st Harmonic: 13th (+/- (2% + 2 digits)) -----

----- 31st (+/- (8% + 2 digits))

Amps* or Watts:

Fundamental to 13th Harmonic: +/- (3% + 3 digits) + probe specs
13th to 31st Harmonic: 13t h ( +/ - ( 3% + 3 digits) + pr obe

specs) ---------- 31st (+/- (8% + 3
digits)+ probe specs)

* < 20A, add 3 digits

Phase:

Fundamental: (±2 degrees) + probe specs
2nd to 31st Harmonic: 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

Specifications

59

Other Measurement Specifications

Measurement Functi on 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 unspecif ied

0.30 to 0.69 ±0.04

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: 0.0 to 799.9 ±(0.03 x Reading + 2.0%)
%THD-R: 0.0 to 99.9 ±(0.03 x Reading + 2.0%)

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Ranges and Resolution

AC Volts AC Amps Watts

Range

(PK)

Resolution Range

(PK)

Resolution Range

(PK)

Resolution

20V 0.1V 2A 0.01A 50W 1.0W
50V 0.1V 5A 0.01A 100W 1.0W
100V 0.1V 10A 0.01A 200W 1.0W
200V 0.1V 20A 0.01A 500W 1.0W
500V 1V 50A 0.1A 1 kW 0.01 kW
1 kV 1V 100A 0.1A 2 kW 0.01 kW

200A 0.1A 5 kW 0.01 kW
500A 1A 10 kW 0.1 kW
1000A 1A 20 kW 0.1 kW
2000A 1A 50 kW 0.1 kW

100 kW 1 kW
200 kW 1 kW
500 kW 1 kW
1 kkW 1 kW
2 kkW 1 kW

Specifications

61

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 “C” Cells 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 r ever sal by tur ning itself off if battery voltage dr ops 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)

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Humidity (noncondensing):

Operating: 0 - 30

°C: 90%

30 - 40

°C: 75%

40 - 50

°C: 45%

Storage: 90%

Altitude:

Operating: 10,000 f eet ( 3 km )

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: Electromagnet ic Com patibility Directiv e ( 89/336/EEC)

Drip Proof and Dust Proof Case: per IEC 529, Section 3;

IP 52 Dust-Protected, Drip Proof

Display

Type: Super Twisted Liquid Crystal
Size: 3.0 inch diagonal (76 mm)
Resolution: 160 W x 128 H pixels
Contrast: User adjustable
Backlight: Yellow-green LED

Specifications

63

Safety

Designed for 600V measurements on industrial power distribution circuits .

!

Overload Protection:

Voltage or Current Probe Input: 600V, maximum
Surge Protection: 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 lat er r ecall or sending to a com put er .

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 form at . Text data is sent is

ASCII format (SEND). Wavef orm , Data, and Picture formats m ay be r em ot ely
accessed. Remote Trigger function.

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