Kikusui TOS9301PD User manual

User’s Manual
Electrical Safety Analyzer
TOS93 Series
TOS9300
TOS9301
TOS9301PD
TOS9302
TOS9303
TOS9303LC
DANGER
This product generates high voltage!
Improper operation can lead to serious accidents.
To prevent accidents, be sure to read the section
“Safety Precautions for Testing” in this manual.
Keep this manual close to the product so that the operators
can read the manual at any time.
Contents 7
Component Names 12
Safety Precautions for Testing 19
Installation 25
Basic Operation 46
Withstanding Voltage and Insulation
Resistance Tests 53
Earth Continuity Test 90
Partial Discharge Test 108
Touch Current Test 134
Protective Conductor Current Test 159
Patient Leakage Current Test 178
Meter Mode 201
Auto Test 215
External Control 234
Memory Function 249
System Settings 258
Maintenance 279
Specifications 285
Appendix 315
Part No. IB035471
Apr 2021

2User’s Manual TOS93 Series
Testing is not possible upon opening the package
When you first turn on this product after opening the package, the safety interlock will prevent
you from performing tests. Connect the included SIGNAL I/O plug to the SIGNAL I/O connector
to temporarily release the interlock (p. 239).
When you actually perform tests, design a system that uses the interlock for safety (p. 240).
Notes to the supervisor
• If the operators cannot understand the language used in this manual, translate the manuals
into the appropriate language.
• Make sure that the operators understand the information in this manual before they operate
this product.
• Keep this manual close to the product so that the operators can read the manual at any time.
You will receive a potentially fatal electric shock if:
• You touch an output terminal while output is being generated.
• You touch a test lead that is connected to an output terminal while output is being generated.
• You touch the EUT while output is being generated.
• You touch a location that is electrically connected to an output terminal while output is being
generated.
• You touch a location that is electrically connected to an output terminal immediately after
output is turned off after a DC withstanding voltage test or insulation resistance test has been
performed.
DANGER

TOS93 Series User’s Manual 3
This manual provides an overview of the product and
notes on usage. It also explains how to configure it, oper-
ate it, perform maintenance on it, and so on. Read this
manual thoroughly before use, and use the product
properly.
Intended readers
These manuals are intended for users of this product and
their instructors. The manuals assume that the reader has
knowledge about electric safety testing.
Manual construction
• User’s manual (this manual)
This document is intended for first-time users of this
product. It provides an overview of the product, notes on
usage, and specifications. It also explains how to con-
nect the product, configure the product, operate the
product, perform maintenance on the product, and so
on.
• Communication Interface Manual
This document contains details about remote control. It
is written for readers with sufficient basic knowledge of
how to control testers and measuring instruments using
SCPI commands.
• Setup Guide
This document is intended for first-time users of the
product. It gives an overview of the product, connecting
procedures, safety precautions etc. Please read this
manual before you operating the product.
• Safety Information
This document contains general safety precautions.
Keep them in mind and make sure to observe them.
PDF files are included in the accompanying CD-ROM.
The newest version of the operation manual can be down-
loaded from Download service of Kikusui website.
Firmware versions that this manual covers
This manual applies to products with firmware versions
2.0X.
For information on how to check the firmware version, see
“Displaying the Device Information” (p.278).
When contacting us about the product, please provide us
with:
The model (marked in the top section of the front panel)
Firmware version (p. 278)
The serial number (marked on the rear panel)
Trademarks
Microsoft is a registered trademark or trademark of Micro-
soft Corporation in the United States and/or other
countries.
Other company names and product names used in this
manual are generally trademarks or registered trademarks
of the respective companies.
Copyright
Reproduction and reprinting of this operation manual,
whole or partially, without our permission is prohibited.
Both unit specifications and manual contents are subject to
change without notice.
© Copyright 2018 Kikusui Electronics Corporation
This product contains open source software under the
licensing terms of GNU General Public License (GPL),
GNU LESSER General Public License (LGPL), and other
licenses.
For details, see the following URL.
https://rddocuments.kikusui.co.jp/oss/tos93
About Manuals
PDFPDF
PDFPDF
PaperPaper
PDFPDF
PaperPaper
PDFPDF
Open Source Software

4User’s Manual TOS93 Series
The TOS93 series is a electrical safety analyzer that can
perform several types of safety tests on electronic devices
and components. The available types of safety tests
include withstanding voltage test, insulation resistance
test, earth continuity test, partial discharge test, and leak-
age current test (touch current test, and protective
conductor current test, patient leakage current test).
Different models are available according to the combina-
tion of tests you require, so a single unit is enough to cover
your various safety test needs.
The product is suited to (1) research and development
installations, (2) test facilities for quality assurance testing
and standard certification, and (3) manufacturing lines.
TOS93 Series Lineup
Features
Diverse lineup of products
A diverse lineup of products is available for the various
combinations of test required in production lines to
accommodate a variety of needs. Tests can be per-
formed in accordance with the requirements of safety
and electrical standards and ordinances such as IEC,
EN, BS, VDE, UL, CSA, GB, and JIS.
Dielectric breakdown detection sensitivity settings
Safety standards define that corona discharge and par-
tial discharge are not dielectric breakdown. This product
allows you to adjust the detection sensitivity of EUT’s
dielectric breakdown during withstanding voltage testing
to support a wide range of settings from those that do
not detect corona discharge or partial discharge to those
that do. Failure analysis that were not possible with pre-
vious Kikusui withstanding voltage testers is now
possible.
Support for AC/DC earth continuity test up to 40 A
(TOS9302, TOS9303, TOS9303LC only)
The newly developed amplifier a broad range of tests
from AC earth continuity test of general home electric
appliances to DC earth continuity test of EV-PV
systems.
A single unit for safety standard testing
(TOS9303LC only)
A single TOS9303LC, which includes all functions nec-
essary for AC/DC withstanding voltage testing,
insulation resistance testing, AC/DC earth continuity
testing, and leakage current testing, can perform the
entire set of safety standard conformance tests.
Accessories
High-voltage test lead
TL31-TOS (1 pair)
SIGNAL I/O plug (1 set)
Assembly type D-sub plug unit
Power cord (1 pc.,* length: 2.5 m)
* Two pieces included for the TOS9303LC.
CD-ROM (1 disc)
Setup Guide (1 copy)
Safety Information (1 copy)
Plug: CEE7/7
Rating: 250 Vac/10 A
Plug: GB1002
Rating: 250 Vac/10 A
or or
The attached power cord varies depending on the shipment destination.
High-voltage warning
sticker (1 pc.)
Test leads for earth
continuity test
TL13-TOS (1 pair)
TOS9302, TOS9303,
TOS9303LC only
Test leads for leakage current test
TL22-TOS (2 red, 1 black)
Flat probe
FP01-TOS (1 sheet)
TOS9303LC only
Spare fuse (1 pc.)
15 A, 250 V
* Stored in the fuse holder
Plug: NEMA5-15
Rating: 125 Vac/10 A
Heavy object warning label
(1 pc.)*
Affix this to the product as
necessary.
* Not included with the TOS9300
Cable tie (1 pc.) China RoHS sheet (1 sheet)
Model Supported tests1
1 ACW: AC withstanding voltage, DCW: DC with-
standing voltage, IR: insulation resistance, EC:
earth continuity, PD: partial discharge, LC: leakage
current
TOS9300 ACW, IR
TOS9301 ACW, DCW, IR
TOS9301PD ACW, DCW, IR, PD
TOS9302 ACW, EC
TOS9303 ACW, DCW, IR, EC
TOS9303LC ACW, DCW, IR, EC, LC
Product Overview

TOS93 Series User’s Manual 5
Support for touch current, protective conductor
current, and patient leakage current tests
(TOS9303LC only)
Various leakage current tests for medical instruments are sup-
ported in addition to those for general electric appliances.
Partial discharge measurement function
(TOS9301PD only)
Partial discharge, which could not be detected in with-
standing voltage tests up to now, can be measured. This
provides a step forward in insulation analysis, and
device and material evaluation.
LAN, USB, and RS232C
The product is standard equipped with LXI compatible
LAN, USB 2.0, USB-TMC compatible USB, and
RS232C interface.
Color liquid crystal display
Intuitive display and controls are provided through the 7-
inch display that shows various test settings, descrip-
tions, and drawings.
• In this manual, the TOS9300, TOS9301, TOS9301PD,
TOS9302, TOS9303, and TOS9303LC electrical safety
analyzer are also referred to as the TOS93 series.
• The term “PC” is used to refer generally to both personal
computers and workstations.
• The term “EUT” is used to refer generally to an equip-
ment under test.
• Test names may be abbreviated as follows:
AC withstanding voltage: ACW, DC withstanding volt-
age: DCW, insulation resistance: IR, earth continuity:
EC, partial discharge: PD, leakage current: LC, touch
current: TC, protective conductor current: PCC, patient
leakage current: Patient.
• The screen captures and illustrations used in this text
may differ from the actual items.
• The following markings are used in this manual.
Indicates an imminently hazardous situation which,
if ignored, will result in death or serious injury.
Indicates a potentially hazardous situation which, if
ignored, could result in death or serious injury.
Indicates a potentially hazardous situation which, if
ignored, may result in slight injury or damage to the
product or other property.
Indicates information that you should know.
>
Indicates the hierarchy of items you need to select. The
item to the left of this symbol indicates a higher level item.
, , , , ,
Indicate TOS93 series model names.
When using this product, be sure to observe the precau-
tions in the Safety Information manual. Items specific to
this product are given below.
• This product generates high voltage. Improper oper-
ation can lead to serious accidents.
To prevent accidents, be sure to read “Safety Precau-
tions for Testing” (p.19) in this manual. Keep this manual
close to the product so that the operators can read the
manual at any time.
• You will receive a potentially fatal electric shock if:
• You touch an output terminal while output is being
generated.
• You touch a test lead that is connected to an output
terminal while output is being generated.
• You touch the EUT while output is being generated.
• You touch a location that is electrically connected to
an output terminal while output is being generated.
• You touch a location that is electrically connected to
an output terminal immediately after output is turned
off after a DC withstanding voltage test or insulation
resistance test has been performed.
• You may receive a potentially fatal electric shock if:
• You operate the tester without grounding it.
• You operate the tester without using rubber gloves for
electrical work.
• You come close to a location that is electrically con-
nected to an output terminal while output is being
generated.
• You come close a location that is electrically con-
nected to an output terminal immediately after output
is turned off after a DC withstanding voltage test or
insulation resistance test has been performed.
• In tests that use test leads, do not touch the tip of
test leads.
Risk of electric shock.
Notations Used in This Manual
9300
9301
9301PD
9302
9303
9303
9303LC
Safety Precautions

6User’s Manual TOS93 Series
• Do not use the product in a poorly ventilated
location.
The product uses forced air cooling. It sucks air through
the inlet holes on its right and left panels and expels air
through its rear panel. Secure adequate space around
the product’s inlet and outlet holes to prevent the possi-
bility of fire caused by accumulation of heat.
Allow at least 20 cm of space between the air inlet/outlet
and the wall (or obstacles). Be careful not to block the
air inlet and outlet when rack mounting the product.
Hot air (approximately 20 °C, 68 °F, hotter than the
ambient temperature) is expelled from the outlet holes.
Do not place objects that are affected by heat near the
air outlet.
• Do not use this product near highly sensitive mea-
suring instruments or receivers.
Noise generated by this product may affect other
devices. At a test voltage of 3 kV or greater, the product
may produce corona discharge between its test lead
clips. This will generate a significant amount of broad-
band RF emission. To minimize this effect, keep the
alligator clips away from each other. Also, keep the alli-
gator clips and test leads away from conducting
surfaces, especially sharp metal edges.
• When installing this product, be sure to observe the tem-
perature and humidity ranges indicated below.
Operating temperature range: 0 °C to 40 °C (32 °F to
104 °F)
Operating humidity range: 20 %rh to 80 %rh (no
condensation)
• When storing this product, be sure to observe the tem-
perature and humidity ranges indicated below.
Storage temperature range: -20 °C to 70 °C (-4 °F to
158 °F)
Storage humidity range: 90 %rh or less (no
condensation)
Air outlet Air inlet
Air inlet
Air outlet
Air inlet
Air inlet
TOS9300, TOS9301, TOS9301PD
TOS9302, TOS9303, TOS9303LC
Notes on Usage

TOS93 Series User’s Manual 7
Contents
About Manuals ...................................................3
Open Source Software .......................................3
Accessories ........................................................4
Product Overview ...............................................4
Notations Used in This Manual...........................5
Safety Precautions .............................................5
Notes on Usage..................................................6
Component Names ..........................................12
Safety Precautions for
Testing
Lighting of the DANGER LED...........................19
Test Precautions ..............................................19
Pre-test precautions ............................................. 19
Testing precautions .............................................. 20
Precautions when setting test conditions ............. 20
Precautions after Output Has Been Turned Off21
Estimated discharge time ..................................... 21
Remote Control Precautions ............................22
Malfunction Precautions ...................................22
Dangerous malfunctions....................................... 22
Emergency measures........................................... 22
Protection Functions.........................................23
Installation
Connecting the Power Cord .............................25
Checking Whether the Power Is On or Off .......26
Checking the interlock operation .......................... 26
Turning the power on............................................ 27
Turning the power off............................................ 28
Setting date .......................................................... 28
Connection for Withstanding Voltage and Insula-
tion Resistance Tests .......................................29
Connecting the test leads ..................................... 29
Removing the test leads ....................................... 33
Connection for Earth Continuity Tests..............34
Four-terminal wiring and two-terminal wiring........ 34
Connecting the test leads ..................................... 35
Removing the test leads ....................................... 37
Connection for Partial Discharge Tests............38
Connecting the test leads..................................... 38
Removing the test leads....................................... 40
Connection for Leakage Current Tests ............41
Using the insulation transformer........................... 41
Connecting the EUT to the power supply............. 41
Connecting the test leads..................................... 44
Basic Operation
Basic Panel Operations....................................46
Switching menus .................................................. 46
Using the function keys ........................................ 47
Inputting numbers and characters........................ 49
Changing values................................................... 50
Selecting the Test Mode ..................................51
Selecting the test mode........................................ 52
Withstanding Voltage and
Insulation Resistance Tests
Setting Test Conditions ....................................53
Displaying the setup screen (Home menu) .......... 53
Description of test conditions ............................... 54
Test voltage.......................................................... 55
Limit voltage ......................................................... 56
Start voltage ......................................................... 57
End Voltage.......................................................... 58
Frequency ............................................................ 59
Upper limit ............................................................ 60
Lower limit ............................................................ 61
Unit of criteria (Judge Type) ................................. 62
Auto setting of the judgment delay (Delay Auto).. 63
Test time............................................................... 65
Voltage rise time................................................... 66
Voltage fall time.................................................... 67
Discharge time ..................................................... 68
Discharge when interlock is activated (Discharge
Interlock)............................................................... 69
Current detection response speed (Filter)............ 70
Grounding mode (GND) ....................................... 71
Current measurement mode (Current RMS)........ 73
Voltage measurement mode (Volt Measure)........ 74

8User’s Manual TOS93 Series
Using the low-pass filter ........................................75
Peak value display (Display Peakhold) .................76
Offset (Offset Real, Offset Imag)...........................77
Offset.....................................................................78
Checking the scanner contact (Contact Check)....79
Setting scanner channels (Edit)............................80
Opening the scanner (All Open)............................81
Starting a Test ................................................. 82
Output time limit ....................................................82
Starting a test ........................................................83
Operation after a test starts...................................84
Changing the voltage setting during a test ............87
Finishing the Test and Viewing the Judgment. 88
Stopping tests .......................................................88
Conditions that cause a test to end.......................88
Judgment types and operation..............................89
Clearing the judgment result .................................89
Earth Continuity Test
Setting Test Conditions ................................... 90
Displaying the setup screen (Home menu) ...........90
Description of test conditions ................................91
Test current ...........................................................91
Limit current ..........................................................92
Frequency .............................................................92
Upper limit .............................................................93
Lower limit .............................................................94
Test time ...............................................................95
Current rise time....................................................96
Current fall time.....................................................96
Terminal wiring method (Terminals Wire) .............97
Contact check .......................................................98
Peak value display (Display Peakhold) .................99
Offset...................................................................100
Starting a Test ............................................... 101
Output time limit ..................................................101
Starting a test ......................................................101
Operation after a test starts.................................102
Changing the current setting during a test ..........105
Finishing the Test and Viewing the Judgment106
Stopping tests .....................................................106
Conditions that cause a test to end.....................106
Judgment types and operation............................107
Clearing the judgment result ...............................107
Partial Discharge Test
Set test conditions ......................................... 108
Displaying the setup screen (HOME menu)........108
Description of test conditions ..............................109
Setting the voltage pattern, test voltages, and appli-
cation times.........................................................110
Limit voltage........................................................113
Frequency ...........................................................113
Upper limit of electric charge (Upper Coulomb)..114
Reference upper limit of discharge count (Upper
Pulse Count) .......................................................115
Threshold for discharge (Pulse Count Threshold) ....
116
Measurement range (Range)..............................117
Electric charge for detecting discharge inception volt-
age (Inception Voltage).......................................118
Electric charge for detecting discharge extinction
voltage (Extinction Voltage) ................................119
Band Pass Filter..................................................120
Low-pass filter.....................................................121
Voltage Measure.................................................122
Electric charge peak value display (Display
Peakhold)............................................................123
Electric charge calibration (Precalibration) .........123
Graph scale setting (Graph Scale)......................124
Display of discharge inception voltage/discharge
extinction voltage (Inc/Ext-Volt Marker) ..............125
Graph axis setting (Graph Format) .....................126
Precalibration .................................................127
Automatically perform precalibration before starting a
test ......................................................................127
Manually perform precalibration..........................128
When precalibration fails.....................................128
Starting a Test................................................129
Starting a test......................................................129
Operation after a test starts ................................129
Changing the voltage setting during a test..........131
Finish the Test and Judge..............................132
Stopping tests .....................................................132
Conditions that cause a test to end.....................132
Judgment types and operation............................133
Clearing the judgment result ...............................133
Touch Current Test
Setting Test Conditions ..................................134
Displaying the setup screen (Home menu).........134
Description of test conditions ..............................135
Network...............................................................136
Polarity of the power supply line .........................137
Single fault mode (Condition)..............................138
Probe connection destination..............................139
Output from the 110% terminal (110% OUT)......140
Upper limit...........................................................141
Lower limit...........................................................142
Judgment delay (Judge Delay) ...........................143

TOS93 Series User’s Manual 9
Test time............................................................. 144
Measurement range ........................................... 145
Measurement mode (Measure Mode) ................ 147
Voltmeter band expansion (VoltMeter BandWidth) ..
148
Peak value display (Display Peakhold) .............. 149
Measurement check (Measure Check)............... 149
Offset .................................................................. 150
Voltage conversion (Conv Voltage) .................... 151
Checking the EUT operation (Line OUT)............ 151
Starting a Test ................................................152
Connecting the test leads to the EUT................. 152
Starting a test ..................................................... 154
Operation after a test starts ................................ 155
Finishing the Test and Viewing the Judgment157
Stopping tests..................................................... 157
Conditions that cause a test to end .................... 157
Judgment types and operation ........................... 158
Clearing the judgment result............................... 158
Protective Conductor
Current Test
Setting Test Conditions ..................................159
Displaying the setup screen (Home menu) ........ 159
Description of test conditions.............................. 160
Network .............................................................. 161
Polarity of the power supply line......................... 162
Single fault mode (Condition) ............................. 162
Upper limit .......................................................... 163
Lower limit .......................................................... 164
Judgment delay (Judge Delay)........................... 165
Test time............................................................. 166
Measurement range ........................................... 167
Measurement mode (Measure Mode) ................ 168
Voltmeter band expansion (VoltMeter BandWidth) ..
169
Peak value display (Display Peakhold) .............. 170
Measurement check (Measure Check)............... 170
Offset .................................................................. 171
Voltage conversion (Conv Voltage) .................... 172
Checking the EUT operation (Line OUT)............ 172
Starting a Test ................................................173
Starting a test ..................................................... 173
Operation after a test starts ................................ 174
Finishing the Test and Viewing the Judgment176
Stopping tests..................................................... 176
Conditions that cause a test to end .................... 176
Judgment types and operation ........................... 177
Clearing the judgment result............................... 177
Patient Leakage Current
Test
Setting Test Conditions ..................................178
Displaying the setup screen (Home menu) ........ 178
Description of test conditions ............................. 179
Network .............................................................. 179
Polarity of the power supply line......................... 180
Single fault mode (Condition)............................. 181
Probe connection destination............................. 182
Output from the 110% terminal (110% OUT) ..... 183
Upper limit .......................................................... 184
Lower limit .......................................................... 185
Judgment delay (Judge Delay)........................... 186
Test time............................................................. 187
Measurement range ........................................... 188
Measurement mode (Measure Mode)................ 189
Voltmeter band expansion (VoltMeter BandWidth) ..
190
Peak value display (Display Peakhold) .............. 191
Measurement check (Measure Check) .............. 191
Offset.................................................................. 192
Voltage conversion (Conv Voltage).................... 193
Checking the EUT operation (Line OUT) ........... 193
Starting a Test................................................194
Connecting the test leads to the EUT................. 194
Starting a test ..................................................... 196
Operation after a test starts................................ 197
Finishing the Test and Viewing the Judgment199
Stopping tests..................................................... 199
Conditions that cause a test to end.................... 199
Judgment types and operation........................... 200
Clearing the judgment result .............................. 200
Meter Mode
Constructing the Measurement Circuit...........202
Setting Measurement Conditions ...................203
Displaying the setup screen (Home menu) ........ 203
Overview of measurement conditions ................ 203
Network .............................................................. 204
Measuring across terminals A and B (A-B Terminal)
205
SELV setting....................................................... 206
Measurement range ........................................... 207
Measurement mode (Measure Mode)................ 208
Measurement check (Measure Check) .............. 208
Offset.................................................................. 209
Output from the 110% terminal (110% OUT) ..... 210
Polarity of the 110% output ................................ 211
Executing a Measurement .............................212

10 User’s Manual TOS93 Series
Connecting the test leads....................................212
Taking measurements.........................................212
Measurement operation ......................................213
Measurement example (judgment of the parts that
can be touched) ..................................................213
Auto Test
Auto Test Overview ....................................... 215
Tests that auto test can run.................................215
Programs and steps ............................................215
Main functions .....................................................216
Program Configuration .................................. 217
Displaying the program editing screen................217
Creating a program .............................................218
Changing a program name .................................218
Deleting a program..............................................219
Setting Steps ................................................. 220
Displaying the step editing screen ......................220
Editing steps........................................................221
Program Operation Configuration.................. 224
Fail judgment operation (FAIL Judgment)...........224
Step interval ........................................................225
Step start operation (Trigger Source)..................226
EUT power supply (Line Output).........................227
Running Auto Tests ....................................... 228
Running an auto test ...........................................228
Behavior during the test ......................................229
Finishing the Test and Viewing the Judgment230
Stopping tests .....................................................230
Conditions that cause a test to end.....................230
Judgment types and operation............................231
Clearing the judgment result ...............................231
Exporting and Importing Programs................ 232
Exporting programs to a USB memory device ....232
Importing programs from a USB memory device 233
External Control
SIGNAL I/O Connector .................................. 235
Pin arrangement..................................................235
I/O signal circuit...................................................236
Input signal usage example ................................237
Output signal usage example..............................237
Connecting to the SIGNAL I/O connector ...........238
Activating and Releasing Interlock ................ 239
Interlock activation conditions .............................239
Interlock release conditions.................................239
Examples of how to use interlock........................240
Recalling from memory ..................................241
Starting and Stopping Tests...........................242
Starting a test......................................................242
Stopping a test ....................................................242
Monitoring the Test Status .............................243
Monitoring the test mode ....................................243
Monitoring the test and voltage generation status ....
243
Monitoring the test status....................................243
Monitoring judgment results................................244
Monitoring the step execution status of auto tests....
245
Monitoring the activation status of protection
functions..............................................................245
Monitoring Measurements..............................246
Monitoring current waveforms.............................246
Monitoring voltage waveforms ............................246
Monitor the discharge waveform of partial discharge
247
Monitoring electric charge waveforms of partial
discharge ............................................................247
Using Option Products ...................................248
Signal output from the STATUS OUT connector 248
Signal I/O of the REMOTE connector .................248
Memory Function
Saving and Recalling Test Conditions............249
How to view the setup memory screen ...............249
Saving to the setup memory ...............................250
Checking the setup memory details....................251
Recalling the setup memory ...............................252
Viewing and Saving Test Results...................253
Displaying a list of test results.............................254
Saving test results to a USB memory device......254
Clearing the list of test results.............................255
Viewing and Saving Test Data .......................256
Viewing test data.................................................256
Saving test data to a USB memory device .........257
Deleting test data ................................................257
System Settings
Displaying and Changing CONFIG Settings ..258
Panel settings at startup (Power On) ..................259
Operation when there is no SCPI communication
(Watchdog) .........................................................260
Screen saver.......................................................261
Key lock ..............................................................262
Calibration configuration .....................................263

TOS93 Series User’s Manual 11
Beep sound (Beeper) ......................................... 264
Fail mode............................................................ 265
Test start settings ............................................... 266
PASS judgment result hold time......................... 267
STATUS OUT setting (Status Output)................ 268
Outputting judgment for each step (Step END
Judgment)........................................................... 269
Displaying/Changing the Interface Settings....270
Displaying SCPI Errors...................................272
Setting the Date/Time.....................................273
Changing calibration date...............................274
Initializing the Settings....................................275
Restoring the factory default settings ................. 275
Restoring the reset settings................................ 276
Updating .........................................................277
Displaying the Device Information..................278
Maintenance
Inspection .......................................................279
Pre-inspection for withstanding voltage test and insu-
lation resistance test........................................... 279
Pre-testing the earth continuity test .................... 280
Pre-testing the leakage current test.................... 281
Replacing Components ..................................283
Replacing the backup battery ............................. 283
Replacing the fuse.............................................. 283
Periodic Calibration ........................................284
Specifications
Withstanding voltage test section ....................... 286
Insulation resistance test section........................ 289
Earth continuity test section................................ 294
Partial discharge test section.............................. 296
Leakage current test section .............................. 299
Interface.............................................................. 306
Other functions ................................................... 308
General specifications ........................................ 310
External dimensions ........................................... 311
Appendix
Default Settings and Reset Settings...............315
Withstanding voltage (ACW/DCW), insulation resis-
tance (IR) test conditions.................................... 315
Earth continuity (EC) test conditions .................. 316
Partial discharge (PD) test conditions ................ 316
Leakage current (LC) test conditions ................. 317
Auto test (AUTO) settings .................................. 318
Memory function................................................. 318
CONFIG settings................................................ 319
Interface settings................................................ 320
Stray Capacitance of AC Withstanding Voltage
Tests ..............................................................321
Timing Charts.................................................322
Contact check operation..................................... 322
ACW test (PASS judgment) ............................... 323
ACW test (FAIL judgment) ................................. 324
ACW test (interlock) ........................................... 325
Example of partial discharge test ...................326
Calculating the setting ........................................ 326
Performing a pre-test inspection ........................ 326
Performing tests ................................................. 328
Performing an alternative test ............................ 329
Options...........................................................330
High voltage scanner.......................................... 330
Remote control box ............................................ 331
DIN adapter cable .............................................. 331
High voltage test probe ...................................... 332
Warning light unit................................................ 332
Multi-outlet.......................................................... 333
Brackets ............................................................. 334
Troubleshooting .............................................335
Index ..............................................................337

12 User’s Manual TOS93 Series
Component Names
Front panel
56
1
56 7
2
2
TOS9300, TOS9301, TOS9301PD
1
1
2
3456 7
TOS9302, TOS9303
TOS9303LC
8
9
10
3
7
8
9
10
8
9
10

TOS93 Series User’s Manual 13
No. Name Function See
1DANGER LED Lights red when the power is turned on, when a test is in progress, when
a high voltage is being output, or when there is residual voltage at the
output terminals. On the TOS9303LC, the LED also lights red when
supply voltage is being supplied to the EUT.
–
2Area for withstanding voltage,
insulation resistance, and partial
discharge tests1
–p.29
HIGH VOLTAGE terminal Outputs the test voltage of the high voltage side. –
LOW terminal Outputs the test voltage of the low voltage side (with cable lock). –
3Area for earth continuity test – p.34
OUTPUT HI terminal Outputs the test voltage of the high voltage side. –
OUTPUT LO terminal Outputs the test voltage of the low voltage side. –
SENSING HI terminal Detects the voltage at the sensing terminal (of the high voltage side)
when four-terminal wiring is in use.
–
SENSING LO terminal Detects the voltage at the sensing terminal (of the low voltage side) when
four-terminal wiring is in use.
–
4Area for leakage current test – p.41
110% terminal Outputs the voltage applied to the AC LINE IN inlet on the rear panel. –
A and B terminals Measurement terminals for connecting test leads and probes. –
5USB port (host) For connecting an external keyboard.
Saves setup memory and test results.
Exporting and Importing Programs.
Updates the firmware.
p.49
p.249
p.232
p.277
6REMOTE connector For connecting the optional remote control box or test probes. p.330
7Controls – p.14
8START switch Starts a test. –
9STOP switch Stops testing and clears the current status. Returns to the HOME menu
screen.
–
10 POWER switch Turns the power on ( ) and off( ). p.27
1 Partial discharge test is available only on the TOS9301PD.

14 User’s Manual TOS93 Series
Controls
No. Name Function See
1Display Displays the settings, measured values, and other information. p.15
2Menu keys Switch the display. p.46
HOME/FUNC key Switches between the test setup screen (Home menu) and test selection
screen (Function menu).
p.46
AUTO key Displays the auto test screen. p.215
MEMORY key Displays the memory function screen. p.249
SYSTEM key Displays the system setting screen (System Menu). p.258
3Numeric keypad Enters values. p.49
4CLEAR key Deletes numbers/characters. p.49
5ENTER key Confirms numeric keypad input. Confirmation after selection of setting item. p.49
KEYLOCK key Hold down to lock the keys. Hold down when key lock is enabled to unlock. p.262
6ESCAPE key Cancels numeric/character input. Closes windows. p.49
LOCAL key Returns remote control to panel operation. p.335
7←/→ keys Move the cursor left and right. Select the left or right item. p.49
8Rotary knob Selects an item. Enters numbers and characters. p.49
9Function keys Executes the item that is displayed above each key (function area). p.47
10 Sub-function keys Executes the item that is displayed to the left of each key (sub-function area). p.47
AUTO
MEMORY SYSTEM
ENTERESCAPE
879
546
213
0CLEAR
LOCAL
KEY LOCK
HOME / FUNC
1
910
2
3
6
7
8
5
4

TOS93 Series User’s Manual 15
Display
No. Name Function See
1Test mode Selected test type. –
2Test status – –
READY Ready to start test. –
RISE Voltage or current rising. –
FALL Voltage or current falling. –
TEST Testing. –
PASS Test successful. –
Upper-FAIL Test failed because a value greater than or equal to the upper limit was detected.
–
Lower-FAIL Test failed because a value less than or equal to the lower limit was detected. –
Upper-FAIL (dV/dt) In a DCW test, the voltage rise rate (dV/dt) is less than approximately 1 V/s. p.89
Lower-FAIL (dV/dt) In an IR test, the voltage rise rate (dV/dt) is less than approximately 1 V/s. p.89
Contact-FAIL The continuity between the scanner and EUT cannot be verified.
(TOS9303LC only) The test leads are grounded when the touch current test
condition “Probe” is set to Enc-Liv or Enc-Neu.
p.79
p.153
Calibration-FAIL (TOS9301PD only) The test has started with no precalibration performed. p.127
CHECK Contact check in progress. p.98
3
Status display icon area Displays a product status using icons. p.18
4Settings area
Displays settings and descriptions. Displays measured values during testing. –
5function area Indicates that execution is possible with the keys (function keys) at the bottom
of the display.
p.47
6sub-function area Indicates that execution is possible with the keys (sub-function keys) in the
right side of the display.
p.47
7Menu name Name of the menu currently displayed. p.46
123
4
5
6
7

16 User’s Manual TOS93 Series
Rear panel
123 4 567 1110
16
16
16
123 4 5678911
10 14
123 4 56 7 12 13 14
14
14
15
17
17
17
16
17 18 19
123 4 567
18 19
1918
18 19
10 11
10 11
15
15
15
TOS9302, TOS9303
TOS9301PD
TOS9303LC
TOS9300, TOS9301

TOS93 Series User’s Manual 17
No. Name Function See
1STATUS OUT connector Connect option products. p.248
2SCANNER connector Connect to the high voltage scanner option. p.330
3USB port USB port for remote control. Interface
Manual
4LAN port LAN port for remote control.
5RS232C port RS232C port for remote control.
6DC OUT 5 V terminal Connect option products. –
7SIGNAL I/O connector A I/O signal connector for controlling this product from an external
device.
p.234
8Ipd terminal Signal output terminal for monitoring the discharge waveforms of
partial discharge.
p.247
9Qpd terminal Signal output terminal for monitoring the electric charge
waveforms of partial discharge.
p.247
10 I terminal Signal output terminal for monitoring the current waveforms of
withstanding voltage tests.
p.246
11 V terminal Signal output terminal for monitoring the voltage waveforms of
withstanding voltage tests.
p.246
12 CAL terminal Not used. –
13 Area for leakage current test – p.41
AC LINE OUT terminal block Connect the EUT here. Power applied to the AC LINE IN inlet is
supplied.
–
AC LINE IN inlet Connect a power cord for supplying power to the EUT. –
FUSE Input fuse holder for the EUT power supply. p.283
14 Area for withstanding voltage,
insulation resistance, and partial
discharge tests1
–p.29
HIGH VOLTAGE terminal Outputs the test voltage of the high voltage side. –
LOW terminal Outputs the test voltage of the low voltage side (with cable lock). –
GUARD terminal Connect the chassis connection wire of the shield box when a
shield box is used.
p.32
15 Cable tie attachment hole Hole for attaching the included cable tie (for USB cables). –
16 AC INPUT inlet Connect a power cord for supplying power to this product. p.25
17 Serial number Serial number. –
18 Air outlet Vent for cooling this product. –
19 FOR OPTION terminal Connect the ground wire of option products. –
1 Partial discharge test is available only on the TOS9301PD.

18 User’s Manual TOS93 Series
Status display icons
Icon Description See
Indicates that key lock is on. The key lock level is displayed numerically. p.262
Under remote control. Interface Manual
LAN connection status. Green: Communication enabled, Orange: Preparing
for communication, Red: Not connected.
–
Fail Mode is enabled. p.265
Double Action is enabled. p.266
Start Long is enabled. p.266
Momentary is enabled. p.266
/ Auto testing/auto test standby. p.215
/ GND setting (Low, Guard). p.71
1
1 TOS9303LC only
Applying voltage from the 110 % terminal. p.210
*1 Supplying power to the EUT from the AC LINE OUT terminal block. p.282
2
2 TOS9302 not supported.
While discharging. p.68
SCPI error. The number of error incidents (up to 16) is displayed numerically. p.272

TOS93 Series User’s Manual 19
Safety Precautions for Testing
Lighting of the DANGER LED
The DANGER LED lights when the product is in any of the following conditions.
• At power on
• When a test is running
• When high voltage is being output
• When voltage remains at the output terminals
• When supply voltage is being supplied to the EUT (TOS9303LC only)
Check whether the DANGER LED lights at power on. If it does not, stop using the product, and contact
your Kikusui agent or distributor.
Test Precautions
Pre-test precautions
Check the following items before you start testing, and always follow the precautions.
• The power cord is connected to a properly grounded outlet.
• There is no damage such as tears or breaks in the test lead insulation.
• When the POWER switch is turned on, the DANGER LED lights.
• When the DANGER LED is lit, do not turn the POWER switch off except in an emergency.
• Test leads connected to the following output terminals of this product must not be connected to
the main power supply circuit in the active state.
• HIGH VOLTAGE terminal or LOW terminal (all models)
• OUTPUT HI terminal, OUTPUT LO terminal, SENSING HI terminal, or SENSING LO terminal (for
TOS9302, TOS9303, TOS9303LC)
WARNING
Risk of electric shock.
• In a AC withstanding voltage test, the TOS93 series generates a maximum voltage
of 5.0 kVac. In a DC withstanding voltage test, the TOS9301, TOS9301PD, TOS9303,
and TOS9303LC generate a maximum voltage of 7.2 kVdc. Handling the product
improperly may lead to a fatal accident. To prevent accidents, strictly follow the
precautions and always pay the utmost attention to safety concerns when you
operate the product.
• While the DANGER LED is lit, do not touch the EUT, test leads, test probes, output
terminals, or other peripheral components.

20 User’s Manual TOS93 Series
Safety Precautions for Testing | Test Precautions
Testing precautions
During testing, the DANGER LED lights, and the display shows “TEST.” Be careful because high voltage
may be being output when the DANGER LED is lit.
Precautions when setting test conditions
Before changing test conditions, press STOP and check that the DANGER LED is turned off to ensure
safety.
WARNING
Risk of electric shock.
• While the DANGER LED is lit, do not touch the EUT, test leads, test probes, output
terminals, or other peripheral components.
• The alligator clip vinyl insulation of the supplied tests do not have dielectric
strength. Never touch these while the DANGER LED is lit.
• When performing a withstanding voltage test, be sure to wear rubber gloves for
electrical work. If obtaining these gloves is difficult, contact your Kikusui agent or
distributor.
OUTPUT
DANGER
110%
LEAKAGE
CURRENT
HIGH VOLTAGE EARTH CONTINUITY
OUTPUT
LOW HIGH
H
Lit Test status