Table Of Contents - YOKOGAWA WT110 User Manual

Contents
Foreword
............................................................................................................................................................................. 1
Checking the Contents of the Package
Safety Precautions
How to Use this Manual
Conventions Used in this Manual
Chapter 1 What this Instrument Can Do
1.1
1.2
1.3
Chapter 2 Nomenclature, Keys and Displays
2.1
2.2
2.3
Chapter 3 Before Operation
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10 Improving the Measurement Accuracy ...................................................................................... 3-16
Chapter 4 Setting Measurement Conditions
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
Chapter 5 Measuring/Displaying Voltage, Current, Active Power, Frequency,
Four Arithmetic Operation Value, Crest Factor and Peak Value
5.1
5.2
5.3
8
...................................................................................................................................................... 4
.......................................................................................................................................... 6
.................................................................................................................. 7
System Configuration and Block Diagram .................................................................................. 1-1
Functions ...................................................................................................................................... 1-2
Digital Numbers/Characters, and Initial Menus .......................................................................... 1-5
Front Panel, Rear Panel and Top View ........................................................................................ 2-1
Operation Keys and Function/Element Display .......................................................................... 2-2
Displays in case of Overrange/Error during Measurement ......................................................... 2-4
Usage Precautions ........................................................................................................................ 3-1
Installing the Instrument .............................................................................................................. 3-2
Wiring Precautions ...................................................................................................................... 3-4
Wiring the Measurement Circuit ................................................................................................. 3-5
Wiring the Measurement Circuit when Using External PT/CT ................................................... 3-7
Wiring the Measurement Circuit when Using the External Sensor ............................................. 3-9
Connecting the Power Supply .................................................................................................... 3-12
Turning the Power ON/OFF ...................................................................................................... 3-13
Selecting the Wiring Method (for WT130) .............................................................................. 3-15
Selecting the Measurement Mode ................................................................................................ 4-1
Turning the Filter ON/OFF .......................................................................................................... 4-3
Selecting the Measurement Range in case of Direct Input .......................................................... 4-4
Setting the Scaling Value when External PT/CT is Used ............................................................ 4-6
Selecting the Measurement Range and Setting the Scaling Value when External Sensor is
Used (option) ............................................................................................................................... 4-8
Using the Averaging Function ................................................................................................... 4-10
Using the Four Arithmetical Operation Function (Applies to WT110/WT130 with ROM
Version 2.01 or later) ................................................................................................................. 4-12
Computing the Crest Factor (Applies to WT110/WT130 with ROM Version 2.01 or later) .... 4-15
Computing the Efficiency (Applies to WT130 with ROM Version 2.01 or later) .................... 4-16
Measuring/Displaying Voltage, Current and Active Power ........................................................ 5-1
Measuring/Displaying Frequency ................................................................................................ 5-3
Measuring/Displaying Four Arithmetic Operation Value, Crest Factor and Peak Value ........... 5-4
..................................................................................................... 2
IM 253401-01E