YOKOGAWA WT500 User manual

IM 760201-01E
1st Edition
Power Analyzer

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PIM 103-02E

i
IM 760201-01E
Thank you for purchasing the WT500 Power Analyzer. The WT500 is an instrument
capable of measuring parameters such as voltage, current, and power with high
precision.
This user’s manual explains the features, operating procedures, and handling
precautions of the WT500. To ensure correct use, please read this manual thoroughly
before beginning operation. Keep this manual in a safe place for quick reference in the
event that a question arises.
This manual is one of two WT500 manuals. Please read both manuals.
Manual Title Manual No. Description
WT500 Power Analyzer
User’s Manual
IM760201-01E This manual. Explains all WT500 features,
except for the communication features, and
the operating procedures that relate to them.
WT500 Power Analyzer
Communication Interface
User’s Manual (CD-ROM)
IM760201-17E Explains the features related to using
communication commands to control the
WT500.
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
appearance of the figures given in this manual may differ from the appearance of your
actual display.
•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.
Trademark Acknowledgements
• Microsoft, Internet Explorer, MS-DOS, Windows, Windows NT, and Windows Vista
are either registered trademarks or trademarks of Microsoft Corporation in the United
States and/or other countries.
•Adobe, Acrobat, and PostScript are trademarks of Adobe Systems Incorporated.
• In this manual, the TM and ® symbols do not accompany their respective registered
trademark or trademark names.
•Other company and product names are registered trademarks or trademarks of their
respective holders.
Revisions
• 1st Edition: June 2008
1st Edition : June 2008 (YK)
All Rights Reserved, Copyright © 2008 Yokogawa Electric Corporation

ii IM 760201-01E
Checking the Package Contents
After receiving the product and opening the package, check the items described below.
If the wrong items have been delivered, if items are missing, or if there is a problem with
the appearance of the items, contact your nearest YOKOGAWA dealer.
WT500
Check that the model name and suffix code given on the name plate on the side panel
are the same as those on your order.
MODEL
SUFFIX
NO.
Made in Japan
MODEL
SUFFIX
NO.
Made in Japan
MODEL and SUFFIX Codes
Model/Item Suffix Code Description
760201
760202
760203
Number of installed input elements: 1
Number of installed input elements: 2
Number of installed input elements: 3
Power cord -D UL, CSA standard power cord
-F VDE standard power cord
-Q BS standard power cord
-R AS standard power cord
-H GB standard power cord (CCC-compatible)
Options /C1 GP-IB interface
/C7 Ethernet interface
/EX1 External sensor input (only selectable with the 760201)
/EX2 External sensor input (only selectable with the 760202)
/EX3 External sensor input (only selectable with the 760203)
/G5 Harmonic measurement
/DT Delta computation
/FQ Frequency measurement add-on (enables simultaneous
measurement of all input elements)
/V1 VGA output
Suffix Code Example
On a model with three input elements installed that comes with the GP-IB interface, external
input sensor, and harmonic measurement options and a UL, CSA standard power cord, the
suffix code is 760203-D/C1/EX3/G5.
NO. (Instrument number)
When contacting the dealer from which you purchased the instrument, please give them
the instrument number.

iii
IM 760201-01E
Standard Accessories
The WT500 is shipped with the following accessories.
Item Model/Part No. Quantity Note
Power cord One of the following power cords is included according to the suffix code on the previous
page.
A1006WD 1 UL, CSA standard power cord
Maximum rated voltage: 125 V, Maximum rated current: 7 A
A1009WD 1 VDE standard power cord
Maximum rated voltage: 250 V, Maximum rated current: 10 A
A1054WD 1 BS standard power cord
Maximum rated voltage: 250 V, Maximum rated current: 10 A
A1024WD 1 AS standard power cord
Maximum rated voltage: 250 V, Maximum rated current: 10 A
A1064WD 1 GB standard power cord (CCC-compatible)
Maximum rated voltage: 250 V, Maximum rated current: 10 A
Rubber feet A9088ZM 1 There are two feet in a pair.
Current input protective
cover
B9319BX 1 Comes with two screws.
Safety terminal adapter set 758931 See the
note on
the right.
Same number of sets as the number of installed input
elements
760201: One set with one hexagonal socket wrench
760202: Two sets with one hexagonal socket wrench
760203: Three sets with 1 hexagonal socket wrench
User’s Manual IM760201-01E 1 This manual
Communication Interface
User’s Manual
IM760201-17E 1 CD-ROM
(CD-ROM part number: B9319ZZ)
(Printed manuals can be purchased separately. Contact your nearest YOKOGAWA dealer.)
Rubber feet
A9088ZM
Current input
protective cover
B9318BX
Safety terminal
adapter set
758931
User’s Manual
(this manual)
IM760201-01E
Communication Interface
User’s Manual
IM760201-17 (CD-ROM)
A1006WD
(-D)
A1009WD
(-F)
A1024WD
(-R)
Power cord (One of the following power cords is included according to the suffix code)
A1054WD
(-Q)
A1064WD
(-H)
Checking the Package Contents

iv IM 760201-01E
Optional Accessories (Sold separately)
The following optional accessories are available for purchase separately.
Item Model/Part
No.
Quantity
Sold
Note
Measurement lead 758917 1 Two leads in one set. Used with the
separately sold 758922 or 758929 adapter.
Length: 0.75 m. Rated voltage: 1000 V.
Safety terminal adapter set 758923 1 Two pieces in one set. Rated voltage 600 V.
758931 1 Two pieces in one set. Rated voltage
1000V.
Alligator clip adapter set 758922 1 Two pieces in one set. For the 758917
measurement lead.
Rated voltage: 300 V.
758929 1 Two pieces in one set. For the 758917
measurement lead.
Rated voltage: 1000V.
Fork terminal adapter set 758921 1 Two pieces in one set. For the 758917
measurement lead.
Rated voltage: 1000 V. Rated current: 25 A.
BNC-BNC 366924 1 42 V or less. Length: 1 m.
Measurement lead 366925 1 42 V or less. Length: 2 m.
External sensor cable B9284LK 1 For connecting the current sensor input
connector of the WT500.
Length: 0.5 m.
Conversion adapter 758924 1 BNC-4 mm socket adapter. Rated voltage:
500 V.
Measurement lead
758917
Alligator clip
adapter set
758922
Alligator clip
adapter set
758929
Fork terminal
adapter set
758921
Safety terminal
adapter set
758923
External sensor
cable
B9284LK
Safety terminal
adapter set
758931
BNC cable
366924 (1 m)
366925 (2 m)
Conversion adapter
758924
Checking the Package Contents

v
IM 760201-01E
Safety Precautions
This instrument is an IEC safety class 01 instrument (provided with a terminal for
protective earth grounding).
The general safety precautions described herein must be observed during all phases
of operation. If the instrument is used in a manner not specified in this manual, the
protection provided by the instrument may be impaired. Yokogawa Electric Corporation
assumes no liability for the customer’s failure to comply with these requirements.
The following symbols are used on this instrument.
Handle with care. To protect the instrument and its users, refer to the explanation
in the User’s Manual or Service Manual.
Electric shock, danger
Alternating current
Both direct and alternating current
Power on
Power off
Power-on state
Power-off state
Grounding

vi IM 760201-01E
Failure to comply with the precautions below could lead to injury or death.
WARNING
Use the Correct Power Supply
Make sure that the power supply voltage matches the WT500 rated supply voltage
and that it does not exceed the maximum voltage range specified for the power
cord.
Use the Correct Power Cord and Plug
To prevent fire and electric shock, use the power cord supplied by YOKOGAWA.
The main power plug must be plugged into an outlet with a protective earth
terminal. The earth protection will be nullified if you use an ungrounded extension
cord.
Connect to a Protective Earth Terminal
To prevent electric shock, be sure to connect to a protective earth terminal before
turning on the power. The power cord that comes with the instrument is a three-
prong cord. Connect the power cord to a properly grounded three-prong outlet.
Do Not Impair the Protective Grounding
Never cut off the internal or external protective earth wire or disconnect the wiring
to the protective earth terminal. Doing so may result in electric shock or damage to
the instrument.
Do Not Operate with Defective Protective Grounding or Fuses
Do not operate the instrument if its protective grounding or one of its fuses might be
defective. Check the grounding and the fuses before operating the instrument.
Do Not Operate in an Explosive Atmosphere
Do not operate the instrument in the presence of flammable gasses or vapors.
Doing so is extremely dangerous.
Do Not Remove Covers
Only qualified YOKOGAWA personnel should remove the instrument’s covers. The
inside of the instrument is dangerous because parts of it have high voltages.
Ground the Instrument before Making External Connections
Securely connect the protective grounding before connecting to the item under
measurement or to an external control unit. Before touching a circuit, turn off its
power and check that it has no voltage.
Operating Environment Limitations
CAUTION
This is a class A instrument designed for an industrial environment. Operation of
this equipment in a residential area can cause radio interference, in which case
users will be required to correct the interference.
Safety Precautions

vii
IM 760201-01E
Waste Electrical and Electronic Equipment
Waste Electrical and Electronic Equipment (WEEE), Directive 2002/96/EC
(This directive is only valid in the EU.)
This product complies with the WEEE Directive (2002/96/EC) marking
requirement. This marking indicates that you must not discard this electrical/
electronic product in domestic household waste.
Product Category
With reference to the equipment types in the WEEE directive Annex 1, this
product is classified as a “Monitoring and Control instrumentation” product.
Do not dispose in domestic household waste. When disposing products in the EU,
contact your local Yokogawa Europe B. V. office.

viii IM 760201-01E
Conventions Used in This Manual
Notes and Cautions
The notes and cautions in this manual are categorized using the following symbols.
Improper handling or use can lead to injury to the user or damage
to the instrument. This symbol appears on the instrument to indicate
that the user must refer to the user’s manual for special instructions.
The same symbol appears in the corresponding place in the user’
s manual to identify those instructions. In the manual, the symbol is
used in conjunction with the word “WARNING” or “CAUTION.”
WARNING Calls attention to actions or conditions that could cause serious or
fatal injury to the user, and precautions that can be taken to prevent
such occurrences.
CAUTION Calls attention to actions or conditions that could cause light injury
to the user, or cause damage to the instrument or user’s data, and
precautions that can be taken to prevent such occurrences.
Note Calls attention to information that is important for proper operation of
the instrument.
Symbols Used in Procedural Explanations
The procedural explanations in chapters 3 to 13 use the following symbols, characters,
and words to identify their contents.
Procedure Follow the order of the step numbers when carrying out procedures.
Procedural explanations assume that the procedures are being
performed for the first time. You may not need to perform every step
in a procedure when you are altering settings that have already been
made before.
Explanation Limitations and settings related to the procedure are explained here.
The feature itself is not usually explained here. For information about
the features themselves, see chapter 2.
Characters and Terminology Used in Procedural Explanations
Panel Keys and Soft Keys
Bold characters in procedural explanations are used to indicate panel keys that are used in the
procedure and menu items that appear on the screen.
SHIFT+Panel Key
When SHIFT+panel key appears in a procedural explanation, it means to press the shift key so
that it lights, and then to press the indicated panel key. The setup menu marked in purple below
the panel key that you pressed appears on the screen.
Units
k Denotes 1000. Example: 12 kg, 100 kHz
K Denotes 1024. Example: 459 KB (file size)