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IM 760101-01E
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Index
Contents
Functional Comparison of the WT210/WT230 and WT200/WT110E/WT130 .................................ii
Checking the Contents of the Package .......................................................................................... iii
Safety Precautions .........................................................................................................................vi
Structure of the Manual ................................................................................................................ viii
Conventions Used in This Manual..................................................................................................ix
Startup Guide
Wiring the Circuit .........................................................................................................................S-2
Selecting the Wiring System .......................................................................................................S-8
Selecting the Measurement Range .............................................................................................S-9
Displaying Voltage, Current, and Active Power .........................................................................S-12
Displaying the Efficiency ...........................................................................................................S-18
Chapter 1 Functional Overview and Digital Display
1.1 System Configuration and Block Diagram ....................................................................... 1-1
1.2 Functions ......................................................................................................................... 1-3
1.3 Digital Numbers and Characters and Initial Menus .......................................................... 1-6
Chapter 2 Names and Functions of Parts and Auto Range Monitor, Overrange,
and Error Displays
2.1 Front Panel, Rear Panel, and Top View ........................................................................... 2-1
2.2 Operation Keys and Functions/Element Display .............................................................. 2-2
2.3 Auto Range Monitor, Overrange, and Error Displays during Measurement..................... 2-4
Chapter 3 Before Starting Measurements
3.1 Handling Precautions ....................................................................................................... 3-1
3.2 Installing the Instrument ................................................................................................... 3-2
3.3 Wiring Precautions ........................................................................................................... 3-4
3.4 For Making Accurate Measurements ............................................................................... 3-7
3.5 Connecting the Power Supply .......................................................................................... 3-8
3.6 Turning ON/OFF the Power Switch and Opening Message ............................................ 3-9
3.7 Directly Wiring the Circuit under Measurement ............................................................. 3-11
3.8 Using an External PT or CT to Wire the Circuit under Measurement ............................ 3-13
3.9 Using an External Sensor to Wire the Circuit under Measurement ............................... 3-15
3.10 Selecting the Wiring System (Applies Only to the WT230) ............................................ 3-19
Chapter 4 Setting Measurement Conditions and Measurement Range
4.1 Selecting the Measurement Mode ................................................................................... 4-1
4.2 Selecting the Measurement Synchronization Source ...................................................... 4-3
4.3 Turning ON/OFF the Input Filter ...................................................................................... 4-5
4.4 Selecting the Measurement Range When Using Direct Input .......................................... 4-7
4.5 Setting the Scaling Value When External PT/CT is Used .............................................. 4-11
4.6 Selecting the Measurement Range and Setting the Scaling Constant when External
Sensor is Used (option) ................................................................................................. 4-14
4.7 Using the Averaging Function ........................................................................................ 4-17
4.8 Using the MAX Hold Function ........................................................................................ 4-20
4.9 Computing the Efficiency (Applies to WT230 Only) ....................................................... 4-21
4.10 Computing the Crest Factor ........................................................................................... 4-23
4.11 Performing Four Arithmetical Operation ......................................................................... 4-25
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