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YOKOGAWA CW240 User Manual
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3-17
IM CW240E
Preparation for Safe Measurements
3
3.5
Connection Diagrams of Voltage
Probes and Clamp-on Probes
Single-phase two-wire/Single load
(1P2W)
N1
Load 1
Black
Red
N1
Single-phase two-wire/Two loads
(1P2W)
Black
Red
Load 1
Load 2
N1
Single-phase two-wire/Three loads
(1P2W)
Black
Red
Load 1
Load 2
Load 3
N1
Single-phase two-wire/Four loads
(1P2W)
Black
Red
Load 1
Load 4
Load 2
Load 3
48
50
Table of Contents
Chapter 3 Preparation for Safe Measurements
33
Default Chapter
2
Table of Contents
2
Introduction
7
IM Cw240E
7
Checking the Contents of the Package
8
IM Cw240E
9
IM Cw240E
11
Precautions for Safe Use of the Instrument
12
Utilisation en Toute Securite
15
Chapter 1 Product Overview
18
Product Overview
18
System Configuration Diagram
21
Chapter 2 Part Names and How to Use Parts
22
Front Panel and Connector Block
23
Operation Keys
24
Side Faces
25
Screen Configuration
26
Overrange/Error Indication During Measurement
27
Description of Mark Indication
32
Precautions for Use
34
Connecting a Power Supply
36
Connecting Voltage Probes
46
Connecting Clamp-On Probes
47
Connection Diagrams of Voltage Probes and Clamp-On Probes
49
Turning on the Power Switch
54
Performing Measurements with Greater Precision
56
Chapter 4 Wiring
57
Default Chapter
58
Precautions for Wiring to the Measurement Circuit
58
Installing the CW240
59
4.3 Installing the CW240
60
Setting up Wiring
61
Setting up the Number of Loads
62
Carrying out Wiring
63
Wiring the Measurement Circuit Using External VT/CT
79
Checking Wiring
80
Chapter 5 Setting Ranges Using the Direct Keys
84
Setting the Voltage Range
85
Setting the Current Range
87
Ranges and Number of Digits
89
Chapter 6 Configuring Settings
100
Settings
101
General Settings 1/2
102
General Settings 2/2
102
Save Data Settings 1/2
102
Save Data Settings 2/2
102
Communication Settings
102
Voltage Quality Settings
102
Hardware Settings
102
Analog I/O Settings
102
Chapter 7 Measurements
197
Measurements
198
Measure Screens
199
Display Information
202
Measuring Electric Energy
209
Measuring Demand
213
Displaying Zoom (Expanded View)
217
Measuring Harmonics
220
Displaying Waveform
230
Measuring Voltage Quality (Voltage Dip, Voltage Swell, Instantaneous Interruption)
236
Checking Settings
239
7.10 Clearing Integrated Data
241
7.11 Measurement Data
242
Chapter 8 Saving Measured Data
246
Data Save
247
File Names
248
Saving Measured Data
251
Memory (Reference)
256
Backup Memory
258
Copying Screen Data (Hard Copy)
260
Chapter 9 Processing File(S)
262
Default Chapter
263
File Processing
263
Changing a File Name
265
Deleting a File
267
Formatting
270
Data Copy
271
Setting Files (Load/Save/Delete/Name Change)
275
Setting Files (Load/Save/Delete/Name Change)
284
Backup Memory Copy
285
Backup Memory Delete
286
Chapter 10 Using the Communication Function
288
Description of the Communication Function
288
Using a Personal Computer
290
Using a Printer
292
Chapter 11 PC Card
306
Default Chapter
307
11.1 PC Card Specifications
307
Inserting and Removing the PC Card
308
11.3 Formatting the PC Card
309
Saving in the PC Card
310
11.4 Saving in the PC Card
311
Chapter 12 Using External Control Input/Output
313
External Control Input/Output
314
Connecting External Control Terminals
315
Using Multiple CW240 Units in Synchronization
316
Chapter 13 Using Analog Input/Output
318
Analog Output (da Output)
318
Analog Input
322
Connecting Analog Input/Output Terminals
324
Chapter 14 Power Failure Processing Function
325
Chapter 15 Other Functions
328
Holding the Display Value
329
Turning the LCD Backlight on and off
330
Locking the Keys
331
Resetting the System
332
Chapter 16 Maintenance Troubleshooting
333
Things to Check When There Is a Malfunction
334
Error Message Content and Actions
336
Chapter 17 CW 240 Specifications
340
CW 240 Specifications
341
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YOKOGAWA CW240 Specifications
General
Brand
YOKOGAWA
Model
CW240
Category
Measuring Instruments
Language
English
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