Yokogawa Wt1800 User manual

IM WT1801-01EN

2nd Edition

Precision Power Analyzer

WT1800

Features Guide

IM WT1801-01EN

Thank you for purchasing the WT1800 Precision Power Analyzer. This manual contains useful

information about the features of the WT1800. To ensure correct use, please read this manual

thoroughly before beginning operation.

After reading the manual, keep it in a convenient location for quick reference whenever a question

arises during operation. The following manuals, including this one, are provided as manuals for the

WT1800. Please read all the manuals.

Manual Title Manual No. Description

WT1800 Precision Power Analyzer

Features Guide

IM WT1801-01EN This manual. The supplied CD contains the PDF

file of this manual. This manual explains all the

WT1800 features other than the communication

interface features.

WT1800 Precision Power Analyzer

User’s Manual

IM WT1801-02EN The supplied CD contains the PDF file of this

manual. The manual explains how to operate the

WT1800.

WT1800 Precision Power Analyzer

Getting Started Guide

IM WT1801-03EN The manual explains the handling precautions and

basic operations of the WT1800 and provides an

overview of its features.

WT1800 Precision Power Analyzer

Communication Interface

User’s Manual

IM WT1801-17EN The supplied CD contains the PDF file of this

manual. The manual explains the WT1800 series

communication interface features and instructions

on how to use them.

Notes

• The contents of this manual are subject to change without prior notice as a result of continuing

improvements to the instrument’s performance and functionality. The figures given in this manual

may differ from those that actually appear on your screen.

•Every effort has been made in the preparation of this manual to ensure the accuracy of its

contents. However, should you have any questions or find any errors, please contact your

nearest YOKOGAWA dealer.

• Copying or reproducing all or any part of the contents of this manual without the permission of

YOKOGAWA is strictly prohibited.

• The TCP/IP software of this product and the documents concerning it have been developed/

created by YOKOGAWA based on the BSD Networking Software, Release 1 that has been

licensed from the Regents of the University of California.

Trademarks

• Microsoft, Internet Explorer, MS-DOS, Windows, Windows NT, and Windows XP are either

registered trademarks or trademarks of Microsoft Corporation in the United States and/or other

countries.

•Adobe and Acrobat are either registered trademarks or trademarks of Adobe Systems

Incorporated.

• In this manual, the ® and TM symbols do not accompany their respective registered trademark

or trademark names.

• Other company and product names are trademarks or registered trademarks of their respective

holders.

Revisions

• 1st Edition: February 2011

• 2nd Edition: August 2011

2nd Edition: August 2011(YMI)

ii IM WT1801-01EN

Contents

1 Items That This Instrument Can Measure

Measurement Functions Used in Normal Measurement............................................................... 1-1

Harmonic Measurement Functions (Option)................................................................................. 1-3

Delta Computation Functions (Option).......................................................................................... 1-5

Motor Evaluation Functions (Option) ............................................................................................ 1-5

Auxiliary Input Measurement Functions (Option).......................................................................... 1-5

High Speed Data Capturing (Option)............................................................................................ 1-5

What Is a Measurement Function?............................................................................................... 1-6

Measurement Period..................................................................................................................... 1-6

2 Fundamental Measurement Conditions

Wiring System Settings (WIRING)................................................................................................ 2-1

Wiring System (Wiring) ................................................................................................................. 2-1

Efciency Equation (η Formula).................................................................................................... 2-4

Independent Input Element Conguration (Element Independent)............................................... 2-5

Delta Computation (Δ Measure; option)........................................................................................ 2-6

Selecting an Element Whose Measurement Range You Want to Specify (ELEMENT)................ 2-8

Selecting All Input Elements (ALL)................................................................................................ 2-9

Voltage Range (RANGE UP/DOWN (V)) ...................................................................................... 2-9

Auto Voltage Range (AUTO (V))................................................................................................. 2-10

Current Range (RANGE UP/DOWN (A)).....................................................................................2-11

Auto Current Range (AUTO (A))..................................................................................................2-11

Power Range .............................................................................................................................. 2-12

External Current Sensor Range (EXT SENSOR; option) ........................................................... 2-12

External Current Sensor Conversion Ratio (SENSOR RATIO; option)....................................... 2-13

External Current Sensor Range Display Format (DIRECT/MEASURE; option) ......................... 2-14

Scaling (SCALING) ..................................................................................................................... 2-14

Valid Measurement Range (CONFIG(V)/CONFIG(A))................................................................ 2-16

Crest Factor (Crest Factor)......................................................................................................... 2-17

Measurement Period (SYNC SOURCE)..................................................................................... 2-18

Line Filter (LINE FILTER)............................................................................................................ 2-19

Frequency Filter (FREQ FILTER) ............................................................................................... 2-19

Data Update Interval (UPDATE RATE)....................................................................................... 2-20

Averaging (AVG) ......................................................................................................................... 2-20

Displaying the Setup Parameter List (INPUT INFO)................................................................... 2-22

3 Harmonic Measurement Conditions (Option)

Harmonic Measurement Conditions (HRM SET).......................................................................... 3-1

PLL Source (PLL Source) ............................................................................................................. 3-1

Measured Harmonic Orders (Min Order/Max Order) .................................................................... 3-2

Distortion Factor Equation (Thd Formula)..................................................................................... 3-3

Input Element Group (Element Settings) ...................................................................................... 3-3

Anti-Aliasing Filter ......................................................................................................................... 3-4

iii

IM WT1801-01EN

Contents

4 Motor Evaluation Conditions (Option)

Motor Evaluation Conditions and Auxiliary Input Conditions (MOTOR/AUX SET) ....................... 4-1

Scaling Factor (Scaling)................................................................................................................ 4-1

Unit (Unit)...................................................................................................................................... 4-2

Input Signal Type (Sense Type).................................................................................................... 4-2

Analog Input Range ...................................................................................................................... 4-3

Linear Scaling of Analog Input ...................................................................................................... 4-3

Line Filter (Line Filter)................................................................................................................... 4-4

Synchronization Source (Sync Source) ........................................................................................ 4-5

Pulse Input Range ........................................................................................................................ 4-5

Torque Signal Pulse Rating........................................................................................................... 4-5

Revolution signal pulses per revolution (Pulse N) ........................................................................ 4-7

Synchronous Speed (Sync Speed)............................................................................................... 4-7

Electrical Angle Measurement (Electrical Angle Measurement) ................................................... 4-8

Motor Efciency and Total Efciency Computation....................................................................... 4-9

5 Auxiliary Input Conditions (Option)

Auxiliary Input Conditions (MOTOR/AUX SET) ............................................................................ 5-1

Input Signal Name (Aux Name) .................................................................................................... 5-1

Scaling Factor (Scaling)................................................................................................................ 5-1

Unit (Unit)...................................................................................................................................... 5-1

Analog Input Range ...................................................................................................................... 5-1

Linear Scaling of Analog Input ...................................................................................................... 5-2

Line Filter (Line Filter)................................................................................................................... 5-3

6 Holding Measured Values and Performing Single Measurements

Holding Measured Values (HOLD)................................................................................................ 6-1

Single Measurement (SINGLE) .................................................................................................... 6-1

7 Numeric Data Display

Numeric Data Display (NUMERIC)............................................................................................... 7-1

Display Format (FORM)................................................................................................................ 7-1

Numeric Data Display Format....................................................................................................... 7-1

Switching the Displayed Page (PAGE UP/PAGE DOWN) ............................................................ 7-3

Jumping to the First or Last Page (PAGE TOP/PAGE END) ........................................................ 7-3

Number of Displayed Digits (Display Resolution) ......................................................................... 7-4

Display Item (ITEM) ...................................................................................................................... 7-4

4-, 8-, and 16-Value Displays (4 Items/8 Items/16Items) .............................................................. 7-5

Matrix display (Matrix)................................................................................................................... 7-7

All Items Display (All Items) .......................................................................................................... 7-8

Single Harmonics and Dual Harmonics Lists (Hrm List Single/Dual; option)................................ 7-9

Custom Display (Custom)........................................................................................................... 7-10

iv IM WT1801-01EN

Contents

8 Computation

Computation (MEASURE) ............................................................................................................ 8-1

User-Dened Functions (User Dened Function)......................................................................... 8-1

Measuring the Average Active Power ........................................................................................... 8-5

MAX Hold (Max Hold) ................................................................................................................... 8-5

User-Dened Events (User Dened Event) .................................................................................. 8-6

Apparent Power, Reactive Power, and Corrected Power Equations (Formula)............................ 8-8

Sampling Frequency (Sampling Frequency)................................................................................. 8-9

Phase Difference Display Format (Phase).................................................................................. 8-10

Master/Slave Synchronization Measurement (Sync Measure)................................................... 8-10

Voltages or Currents Whose Frequencies Will Be Measured (FREQ MEASURE)......................8-11

9 Integrated Power (Watt hours)

Integration-Related Display Indications ........................................................................................ 9-1

Number of Displayed Digits (Display Resolution) ......................................................................... 9-2

Enabling or Disabling Independent Integration (Independent Control)......................................... 9-4

Independently Integrated Elements (Element Object) .................................................................. 9-4

Starting, Stopping, and Resetting Integration (Start/Stop/Reset) ................................................. 9-5

Integration Conditions (Integ Set) ................................................................................................. 9-7

Integration Mode (Mode)............................................................................................................... 9-7

Integration Timer (Integ Timer).................................................................................................... 9-10

Scheduled Times for Real-Time Integration (Real-time Control) ................................................ 9-10

Integration Auto Calibration On/Off (Auto Cal).............................................................................9-11

Watt Hour Integration Method for Each Polarity (WP ± Type)......................................................9-11

Current Mode for Current Integration (q Mode) ...........................................................................9-11

Rated Time of Integrated D/A Output (D/A Output Rated Time; Option)..................................... 9-12

10 Waveform Display

Waveform Display (WAVE) ......................................................................................................... 10-1

Display Format (FORM).............................................................................................................. 10-2

Number of Windows (Format)..................................................................................................... 10-2

Time Axis (Time/div).................................................................................................................... 10-2

Vertical Axis (Amplitude) ............................................................................................................. 10-4

Trigger (Trigger Settings)............................................................................................................ 10-5

Advanced Waveform Display Settings (Display Settings)........................................................... 10-7

Waveform Mapping (Wave Mapping).......................................................................................... 10-8

Display Item (ITEM) .................................................................................................................... 10-8

11 Trend Display

Other Displays (OTHERS)...........................................................................................................11-1

Trend Display (Trend) ..................................................................................................................11-1

Display Format (FORM)...............................................................................................................11-2

Display Item (ITEM) .....................................................................................................................11-3

12 Bar Graph Display (Option)

Bar Graph Display (OTHERS (Bar)) ........................................................................................... 12-1

Display Format (FORM).............................................................................................................. 12-1

Display Item (ITEM) .................................................................................................................... 12-2

IM WT1801-01EN

Contents

13 Vector Display (Option)

Vector Display (OTHERS (Vector))............................................................................................. 13-1

Display Format (FORM).............................................................................................................. 13-2

Display Item (ITEM) .................................................................................................................... 13-2

14 Split Display

Split Display (OTHERS).............................................................................................................. 14-1

Split Displays with the Numeric Display (Numeric+***)............................................................... 14-1

Split Displays with the Waveform Display (Wave+***) ................................................................ 14-1

Split Displays with the Trend Display (Trend+***)....................................................................... 14-1

Split Display Settings .................................................................................................................. 14-1

15 Cursor Measurement

Cursor Measurement (CURSOR) ............................................................................................... 15-1

Turning Cursor Measurement On and Off (Cursor) .................................................................... 15-1

Waveform Measured by Cursor 1 (+; C1+ Trace)....................................................................... 15-1

Waveform Measured by Cursor 2 (x; C2x Trace) ....................................................................... 15-1

Cursor Path (Cursor Path) .......................................................................................................... 15-2

Position of Cursor 1 (+; C1+ Position) ........................................................................................ 15-2

Position of Cursor 2 (x; C2x Position)......................................................................................... 15-2

Linking Cursor Movement (Linkage)........................................................................................... 15-2

Measured Items .......................................................................................................................... 15-2

Cursor Movement ....................................................................................................................... 15-4

16 High Speed Data Capturing

High Speed Data Capturing (OTHERS(High Speed Data Capturing)) ....................................... 16-1

High Speed Data Capturing (HS) Settings (FORM).................................................................... 16-4

Number of Data Captures (Capture Count) ................................................................................ 16-4

Viewing and Optimizing the Maximum Capturing Count (Optimize Count) ................................ 16-4

Capture Control Settings (Control Settings)................................................................................ 16-5

Recording to a File (Record to File)............................................................................................ 16-7

Save Conditions (File Settings)................................................................................................... 16-8

Starting and Stopping High Speed Data Capturing (Start/Stop)................................................. 16-9

Display Items (ITEM) .................................................................................................................16-11

17 Data Storage

Storage-Related Display Indications........................................................................................... 17-1

Storage Conditions (STORE SET).............................................................................................. 17-1

Storage Control (Control Settings).............................................................................................. 17-2

Stored Items (Item Settings) ....................................................................................................... 17-4

Save Conditions (File Settings)................................................................................................... 17-5

Starting, Stopping, and Resetting Storage (STORE START, STORE STOP, and STORE RESET)...

17-6

Storage Operations in Each Storage Mode ................................................................................ 17-8

vi IM WT1801-01EN

18 Saving and Loading Data

Storage Media............................................................................................................................. 18-1

Saving Setup Data (Save Setup)................................................................................................ 18-2

Saving Waveform Display Data (Save Wave)............................................................................. 18-2

Saving Numeric Data (Save Numeric)........................................................................................ 18-2

File Save Conditions................................................................................................................... 18-3

Loading Setup Data (Load Setup) .............................................................................................. 18-5

File Operations (Utility) ............................................................................................................... 18-6

19 Saving Screen Images

Conditions for Saving Screen Image Data (IMAGE SAVE MENU)............................................. 19-1

Saving a Screen Image (IMAGE SAVE) ..................................................................................... 19-1

20 Printing Screen Images and Numeric Data (Option)

Printing Conditions (PRINT MENU)............................................................................................ 20-1

Output Format (Format).............................................................................................................. 20-1

Automatic Printing Execution (Auto Print ON) ............................................................................ 20-2

Automatic Printing (Auto Print Settings)...................................................................................... 20-2

Comment (Comment) ................................................................................................................. 20-3

Paper Feed (Paper Feed)........................................................................................................... 20-3

Print Timing for Different Print Modes ......................................................................................... 20-4

Printing (PRINT).......................................................................................................................... 20-6

21 Ethernet Communication (Network)

TCP/IP (TCP/IP) ......................................................................................................................... 21-2

FTP Server (FTP Server)............................................................................................................ 21-3

Network Drive (Net Drive)........................................................................................................... 21-4

SNTP (SNTP) ............................................................................................................................. 21-5

22 Utility

Utility (UTILITY) .......................................................................................................................... 22-1

Overview (System Overview)...................................................................................................... 22-2

Initializing the Settings (Initialize Settings).................................................................................. 22-2

Remote Control (Remote Control) .............................................................................................. 22-3

System Conguration (System Cong)....................................................................................... 22-5

D/A Output (D/A Output Items; option)........................................................................................ 22-8

Self-Test (Selftest)......................................................................................................................22-11

23 Other Features

Zero-Level Compensation (CAL) ................................................................................................ 23-1

NULL Feature (NULL SET) ......................................................................................................... 23-1

Enabling and Disabling the NULL Feature (NULL) ..................................................................... 23-3

Clearing Remote Mode (LOCAL)................................................................................................ 23-3

Key Lock (KEY LOCK)................................................................................................................ 23-3

Index

Contents

1-1

IM WT1801-01EN

1 Items That This Instrument Can Measure

The items that you can measure with this instrument are listed below. For details about how the values of the

measurement functions are determined, see appendix 1 in the getting started guide, IM WT1801-03EN. For

explanations of the terms measurement function, input element, and wiring unit, see “What Is a Measurement

Function?”

Click here.

The input elements and wiring units referred to in each measurement function table are listed below. However,

the input elements and wiring units that you can measure vary depending on how many input elements are

installed in the WT1800.

•Input elements: Element1, Element2, Element3, Element4, Element5, Element6

• Wiring units: ΣA, ΣB, ΣC

Measurement Functions Used in Normal Measurement

Voltage

Function Description Input Element Wiring Unit

Urms True rms voltage Yes Yes

Umn Rectified mean voltage calibrated to

the rms value

Yes Yes

Udc Simple voltage average Yes Yes

Urmn Rectified mean voltage Yes Yes

Uac AC voltage component Yes Yes

U+pk Maximum voltage Yes No

U−pk Minimum voltage Yes No

CfU Voltage crest factor Yes No

Current

Function Description Input Element Wiring Unit

Irms True rms current Yes Yes

Imn Rectified mean current calibrated to the

rms value

Yes Yes

Idc Simple current average Yes Yes

Irmn Rectified mean current Yes Yes

Iac AC current component Yes Yes

I+pk Maximum current Yes No

I−pk Minimum current Yes No

CfI Current crest factor Yes No

Power

Function Description Input Element Wiring Unit

P Active power Yes Yes

S Apparent power Yes Yes

Q Reactive power Yes Yes

λPower factor Yes Yes

ΦPhase difference Yes Yes

Pc Corrected Power Yes Yes

P+pk Maximum power Yes No

P−pk Minimum power Yes No

Frequency

Function Description Input Element Wiring Unit

fU Voltage frequency Yes No

fI Current frequency Yes No

fPLL1 Frequency of PLL11No No

fPLL2 Frequency of PLL22No No

1 On models with the harmonic measurement option or the simultaneous dual harmonic measurement

option.

2 Only on models with the simultaneous dual harmonic measurement option.

1-2 IM WT1801-01EN

Integrated Power (Watt hours)

Function Description Input Element Wiring Unit

Time Integration time Yes No

WP Sum of positive and negative watt

hours

Yes Yes

WP+ Sum of positive P values Yes Yes

WP− Sum of negative P values Yes Yes

q Sum of positive and negative ampere

hours

Yes Yes

q+ Sum of positive I values Yes Yes

q− Sum of negative I values Yes Yes

WS Volt-ampere hours Yes Yes

WQ Var hours Yes Yes

Efficiency

Function Description

η1 to η4 Efficiency

User-Defined Functions

Function Description

F1 to F20 User-defined functions

User-defined events

Function Description

Ev1 to Ev8 User-defined events

1 Items That This Instrument Can Measure

1-3

IM WT1801-01EN

Harmonic Measurement Functions (Option)

Function Description Input Element Wiring Unit

U(k) Rms voltage of harmonic order k Yes Yes

I(k) Rms current of harmonic order k Yes Yes

P(k) Active power of harmonic order k Yes Yes

S(k) Apparent power of harmonic order k Yes Yes

Q(k) Reactive power of harmonic order k Yes Yes

λ(k) Power factor of harmonic order k Yes Yes

Φ(k) Phase difference between the voltage

and current of harmonic order k.

Yes No

ΦU(k) Phase difference between the

fundamental signal, U(1), and

harmonic voltage U(k)

Yes No

ΦI(k) Phase difference between the

fundamental signal, I(1), and harmonic

current I(k)

Yes No

Z(k) Impedance of the load circuit Yes No

Rs(k) Series resistance of the load circuit Yes No

Xs(k) Series reactance of the load circuit Yes No

Rp(k) Parallel resistance of the load circuit Yes No

Xp(k) Parallel reactance of the load circuit Yes No

Uhdf(k) Harmonic voltage distortion factor Yes No

Ihdf(k) Harmonic current distortion factor Yes No

Phdf(k) Harmonic active power distortion factor Yes No

Uthd Total harmonic voltage distortion Yes No

Ithd Total harmonic current distortion Yes No

Pthd Total harmonic active power distortion Yes No

Uthf Telephone harmonic factor of the

voltage

Yes No

Ithf Telephone harmonic factor of the

current

Yes No

Utif Telephone influence factor of the

voltage

Yes No

Itif Telephone influence factor of the

current

Yes No

hvf Harmonic voltage factor Yes No

hcf Harmonic current factor Yes No

K−factor K factor Yes No

ΦUi−Uj1Phase difference between the

fundamental voltage of element i,

Ui(1), and the fundamental voltage of

element j, Uj(1).

No Yes

ΦUi−Uk1Phase difference between Ui(1) and

the fundamental voltage of element k,

Uk(1)

No Yes

ΦUi−Ii1Phase difference between Ui(1) and

the fundamental current of element i,

Ii(1)

Yes2Yes

ΦUj−Ij1Phase difference between Uj(1) and

the fundamental current of element j,

Ij(1)

No Yes

ΦUk−Ik1Phase difference between Uk(1) and

the fundamental current of element k,

Ik(1)

No Yes

1 i, j, and k are input element numbers. For example, when the number of input elements in wiring unit ΣA is

six and the wiring system of elements 1, 2, and 3 is three phase, four wire, i is 1, j is 2, and k is 3. ΦUi – Uj

represents ΦU1 – U2, the difference between the fundamental voltage signal of element 1, U1(1), and the

fundamental voltage signal of element 2, U2(1). In the same way ΦUi – Uk, ΦUi – Ii, ΦUj – Ij, and ΦUk−Ik

represent to ΦU1 – U3, ΦU1 – I1, ΦU2 – I2, and ΦU3 – I3, respectively.

2 Setting i to an input element, is the same as setting k to 1 in Φ(k).

1 Items That This Instrument Can Measure

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