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Fluke 434 [59/140] Chapter 13

13-1

Chapter 13

Unbalance

Introduction

Unbalance displays phase relations between voltages and currents. Measuring results are

based upon the fundamental frequency component (60 or 50 Hz using method of

symmetrical components). In a 3-phase power system, the phase shift between voltages

and between currents should be close to 120°. Unbalance mode offers a Meter screen, a

related Trend display, and a Phasor display.

Meter screen

To access the Unbalance Meter screen:

ENTER

Содержание

Fluke 434 435 1
Three phase power quality analyzer 1
Users manual 1
Table of contents 3
Chapter 1 7
General aspects 7
Introduction 7
Limited warranty 8
Limited warranty limitation of liability 8
Declaration of conformity 9
Shipment note 10
1 888 993 5853 in the u s and canada 31 40 2675200 in europe 1 425 446 5500 from other countries 11
A caution identifies conditions and actions that may damage the analyzer 11
A warning identifies conditions and actions that pose hazard s to the user 11
Approval ul std no 61010 1 safety requirements for electrical equipment for measurement control and laboratory use part 1 general requirements rated 600v cat iv 1000v cat iii pollution degree 2 11
Contacting a service center 11
General aspects contacting a service cente 11
Safety information read first 11
The fluke 434 435 three phase power quality analyzer complies with iec en61010 1 2001 can csa c22 no 61010 1 04 including 11
The following international symbols are used on the analyzer and in this manual 11
To locate a fluke authorized service center visit us on the world wide web at www fluke com or call fluke using any of the phone numbers listed below 11
Use the analyzer and its accessories only as specified in the users manual otherwise the protection provided by the analyzer and its accessories might be impaired 11
About this manual 15
Chapter 2 15
Introduction 15
Users manual contents 15
Chapter 3 17
Features of fluke 434 435 17
General measurements 17
Introduction 17
Measuring modes to investigate details 18
Basic operations 19
Basic operations and menu navigation 19
Chapter 4 19
Introduction 19
Tilt stand and hang strap 19
Powering the analyzer 20
Display brightness 21
Locking the keyboard 21
Menu navigation 21
Display contrast 22
Reset to factory defaults 22
Chapter 5 23
Display information 23
Introduction 23
The analyzer uses five different screen types to present measuring results in the most effective way the features these screens have in common are explained in this chapter details that are specific for a certain measuring mode are presented in the chapter explaining that mode the screen header is presented in the selected information language the figure below gives an overview of the screen types 1 5 common features are explained under a f 23
Phase colors 24
Screen types 24
Screen information common for all screen types 25
Chapter 6 27
Input connections 27
Introduction 27
Chapter 7 31
Introduction 31
Scope waveform 31
Scope waveform and phasor 31
Scope phasor 32
Tips and hints 33
Chapter 8 35
Introduction 35
Meter screen 35
Volts amps hertz 35
Tips and hints 37
Chapter 9 39
Dips swells 39
Introduction 39
Events tables 42
Access trend screen with cursor on and positioned on the highlighted event this event can be selected with the up down arrow keys 43
Available function keys 43
By monitoring the voltage and current trend at the power service entrance you can find out if the cause of the voltage dip is inside or outside the building the cause is inside the building downstream when voltage drops while current rises it is outside upstream when both voltage and current drop 43
Dips swells tips and hint 43
Return to trend screen 43
Switch between normal and detailed event table 43
The following abbreviations and symbols are used in the tables 43
The occurrence of dips sags and swells may indicate a weak power distribution system in such a system voltage will change considerably when a big motor or a welding machine is switched on or off this may cause lights to flicker or even show visible dimming it may cause reset and loss of data in computer systems and process controllers 43
Tips and hints 43
Bar graph screen 45
Chapter 10 45
Harmonics 45
Introduction 45
Meter screen 47
Tips and hints 48
Chapter 11 49
Introduction 49
Meter screen 49
Power energy 49
Tips and hints 54
Chapter 12 55
Flicker 55
Introduction 55
Meter screen 55
Tips and hints 58
Chapter 13 59
Introduction 59
Meter screen 59
Unbalance 59
Phasor 61
Tips and hints 62
Chapter 14 63
Introduction 63
Transients 63
Waveform display 63
Tips and hints 65
Chapter 15 67
Inrush 67
Inrush trend display 67
Introduction 67
Tips and hints 69
Chapter 16 71
Introduction 71
Mains signaling 71
Events table 73
Tips and hints 74
Chapter 17 75
Introduction 75
Logger 75
Start menu 75
Fluke 434 435 78
Events 80
Meter screen 80
Available function keys 81
In normal mode major event characteristics are listed start time duration and voltage magnitude detail shows details of threshold crossings per phase 81
Logger event 81
Return to meter screen 81
Return to trend screen 81
Switch between normal and detailed event table 81
The following abbreviations and symbols are used in the tables 81
Chapter 18 83
Introduction 83
Power quality monitoring 83
Fluke 434 435 86
Power quality main screen 86
The table below gives a survey of the aspects of power quality monitoring 86
To access the power quality main screen 86
Events table 87
Access to trend screen two ways to access trend are explained below 88
Available function keys 88
Fluke 434 435 88
Return to next higher menu 88
Switch between normal and detailed events table 88
Switch between selected events or all events 88
The following abbreviations and symbols are used in the tables 88
Trend display 89
Bar graph screen 90
Chapter 19 91
Cursor and zoom 91
Cursor on waveform displays 91
Introduction 91
Cursor on trend displays 92
From events table to trend display with cursor on 93
Cursor on bar graph displays 94
Also other settings such as offset and span of trend and waveform displays are set to factory default values this will give good readings in almost all situations and allows you to start measurements almost immediately 95
At power on a welcome screen is displayed that shows settings currently in use check if date and time of the system clock are correct also the wiring configuration must match the configuration of the power system to be checked the wiring configuration is available under function key f1 95
Chapter 20 95
If desired the settings in the table can be changed by the user 95
If necessary adjust date time and config how to do this is explained in section general settings the welcome screen is shown in the figure below 95
Introduction 95
Setting up the analyzer 95
The setup key accesses menus to view and change analyzer settings at delivery the analyzer is adjusted to settings that match your local situation and the supplied accessories the table below gives an overview 95
General settings 97
Function preferences 101
Available function keys 102
F1 demo mode the voltage input sensitivities are increased to 2 v for use with a demo generator the generator is capable to generate 3 phase voltages and currents with various interference types 102
Fluke 434 435 102
User preferences 105
Limits adjustments 107
To navigate the limits setup menus 107
Press function key f5 back to return to the setup entry menu 109
Setting up the analyzer limits adjustment 109
Setup of monitor limits a survey of adjustments 109
Chapter 21 111
Introduction 111
Using memory 111
Using memory printer and pc 111
Use of printer and pc 113
Chapter 22 117
Cleaning the analyzer and its accessories 117
Installation of options in fluke 434 117
Introduction 117
Keeping the battery in good condition 117
Storing the analyzer 117
Tips and maintenance 117
Enter the pin code with the arrow keys use left right keys to select the position and the up down keys to define the number 118
Fluke 434 435 118
For your fluke 434 you can also order an upgrade kit the kit includes access to install the advanced functions and also power log software 118
Note the version calibration menu indicates the last calibration date for this analyzer a calibration interval of 1 year is recommended contact your authorized fluke service center if the calibration interval has been expired 118
Parts and accessories 118
Press enter to confirm the selection and to activate the option the menu now will show installed behind the option just activated 118
Press function key f1 to enter the install option menu 118
Press function key f2 to enter the version calibration menu this read only menu indicates the options already activated also the date of the last instrument calibration is indicated in the menu 118
Press the setup key to enter the setup entry menu 118
Proceed as follows to activate the advanced functions 118
Standard accessories 118
The following tables list the user replaceable parts for additional optional accessories see the scopemeter accessories brochure to order replacement parts or additional accessories contact your nearest fluke service center 118
Analyzer does not start up 119
Analyzer shuts down after a few seconds 119
Attention the analyzer switches off automatically when powered by battery only if no further knobs are operated after power on i e when the welcome screen is displayed 119
Optional accessories 119
Symbol indicates that the battery is empty and must be charged symbol indicates that the battery is empty and must be charged 119
The battery may be completely empty in this case the analyzer will not start up even if it is powered by the battery charger power adapter charge the battery first power the analyzer with the battery charger without turning it on wait about 15 minutes and try turning on the analyzer again 119
The battery may be empty check the battery symbol in the screen header the 119
The setup clamp menu offers you a dedicated position to adapt the analyzer for use with i5s 119
Tips and maintenance troubleshootin 119
Troubleshooting 119
Chapter 23 121
Introduction 121
Specifications 121
Electrical measurements 122
Fluke 434 435 122
Input characteristics 122
The following specifications of the instrument are verified using the implementation verification table 3 as specified in 61000 4 30 chap 6 2 122
Display modes 123
Specifications electrical measurement 123
Fluke 434 435 124
Measurement modes 124
Accuracy resolution and range 125
Specifications electrical measurement 125
Fluke 434 435 126
Specifications electrical measurement 127
Fluke 434 435 128
Trend recording 128
Specifications electrical measurement 129
Fluke 434 435 130
Measurement method 131
Specifications electrical measurement 131
Fluke 434 435 132
General 132
Wiring combinations 132
Cross talk 133
Mechanical 133
Specifications electrical measurement 133
Standards 133
Common mode rejection ratio cmrr 134
Environmental 134
Fluke 434 435 134
Printers and interface 134
Safety 134
Add clamp accuracy 135
Add n 1 x 2 for amp when using i430flex 135
Depending clamp scaling volt scaling 1 1 135
Electro magnetic compatibility emc 135
Estimated duration 135
Hz 60hz nominal frequency according to iec 61000 4 30 135
Maximum time 9999 hours 135
Measured on reference voltage input a l1 135
Specifications electrical measurement 135
The logger and mains signaling function are optional for the fluke 434 and standard available on the fluke 435 135
Fluke 434 435 138
Fluke 434 435 140

Fluke 434 [59/140] Chapter 13

Содержание

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