Kikusui TOS8030 User manual

OPERATION MANUAL
AC Withstanding Voltage Tester
TOS8030
DANGER
This instrument generates high voltage.
• Any incorrect handling may cause death.
• Read “Precautions for Safe Testing” in this manual
to prevent accident.
• Keep this manual near the instrument for easy
access of the operator.
Part No. Z1-AB0-072, IB008579
Sep. 2014

Use of Operation Manual
Please read through and understand this Operation Manual before operating the product. After reading,
always keep the manual nearby so that you may refer to it as needed. When moving the product to another
location, be sure to bring the manual as well.
If you find any incorrectly arranged or missing pages in this manual, they will be replaced. If the manual
gets lost or soiled, a new copy can be provided for a fee. In either case, please contact Kikusui distributor/
agent, and provide the “Kikusui Part No.” given on the cover.
This manual has been prepared with the utmost care; however, if you have any questions, or note any errors
or omissions, please contact Kikusui distributor/agent.
Reproduction and reprinting of this operation manual, whole or partially, without our permission is prohib-
ited.
Both unit specifications and manual contents are subject to change without notice.
Copyright© 2005-2014 Kikusui Electronics Corporation

TOS8030 1
■ About this manual
This documentation is the Operation Manual for the TOS8030 AC Withstanding
Voltage Tester.
Firmware version of the product to be used:
This Operation Manual applies to products incorporating firmware of:
Version 1.0x
The firmware version is indicated on the voltmeter when the POWER switch is
turned on pressing the STOP switch. For more information, see “5.1 Turning the
POWER Switch On” (page 30).
When inquiring about the product, please provide this version number and the serial
number indicated on the rear of the product.
Testing Cannot be Performed at Unpacking
If the TOS8030’s power is turned on in the condition in which the tester has
been simply unpacked upon receipt, the interlock function will be acti-
vated, preventing performance of testing as-is.
See “6.2 Using the INTERLOCK Terminal” (page 42) to operate the tester,
taking advantage of the interlock function.

2 TOS8030
To the Supervisor in Charge of Operation
• If the operator does not read the language used in this manual, translate the manual into
the appropriate language.
• Help the operator in understanding this manual before operation.
• Keep this manual near the instrument for easy access by the operator.
Hazardous Operations
Any of the following operations will result in electric shock, which may lead to serious
injury or death.
• Touching the output terminal while output is being generated.
• Touching a test lead connected to the output terminal while output is being generated.
• Touching the DUT while output is being generated.
• Touching a part electrically connected to the output terminal while output is being gener-
ated.
Any of the following actions may result in electric shock leading to serious injury or
death.
• Operating the tester without connecting the grounding wire to ground.
• Operating the tester without wearing rubber gloves intended for electrical work.
• Approaching a section electrically connected to the output terminal while output is being
generated.

TOS8030 Safety Symbols 3
or
Indicates that a high voltage (over 1000 V) is used here. Touching
the part causes a possibly fatal electric shock. If physical contact
is required by your work, start work only after you make sure that
no voltage is output here.
DANGER
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 damage to the product and other property.
Shows that the act indicated is prohibited.
Is placed before the sign “DANGER,” “WARNING,” or “CAUTION”
to emphasize these. When this symbol is marked on the product,
see the relevant sections in this manual.
Protective conductor terminal.
Chassis (frame) terminal.
On (supply)
Off (supply)
In position of a bi-stable push control
Out position of a bi-stable push control
WARNING
CAUTION
Safety Symbols
For the safe use and safe maintenance of this product, the following
symbols are used throughout this manual and on the product. Under-
stand the meanings of the symbols and observe the instructions they
indicate (the choice of symbols used depends on the products).

4 Safety Precautions TOS8030
Safety Precautions
The following safety precautions are intended to avoid fire hazard, electrical
shock, and other accidents or failures. Use of the product in a method not spec-
ified in this manual may impair the effectiveness of built-in protective functions.
Users
• This product must be used only by qualified personnel who understand the con-
tents of this Operation Manual.
• If this product is handled by unqualified personnel, personal injury may result.
Ensure that the product is handled under the supervision of qualified personnel
(i.e., those experienced in electrical applications).
Purposes of use
• Do not use the product for any purpose other than those specified.
• This product is not designed or manufactured for home use or for general consumers.
Input power
• Always connect the product to a power supply in line with the product’s input rating.
• Use the provided power cord to supply input power.
• This product is designed as equipment falling under Overvoltage Category II of the
IEC Standards (energy-consuming equipment to be supplied from fixed installation).
Cover
• Components inside the instrument may present physical hazards. Do not remove
the external cover.
Grounding
• The product is equipment falling under Safety Class I of the IEC Standards (equip-
ment with a protective conductor terminal). Always ground the product’s protective
conductor terminal to prevent electric shock.
Installation
• This product is designed for indoor use. Only use it indoors.
• When installing products be sure to observe “2.2 Precautions for Installation”
described in this manual.
Operation
Manual
Line
Voltage
GNL

TOS8030 Safety Precautions 5
Relocation
• Turn off the POWER switch and disconnect all cables before relocating the product.
• Be sure the operation manual be included when the product is relocated.
Operation
• Before using the tester, check that there are no abnormalities on the surface of
the power cord. (Before doing this, always disconnect the power cord from the
electrical outlet.)
• If any abnormality or failure is detected in the products, stop using it immediately.
Unplug the power cord. Be careful not to allow the product to be used before it is
completely repaired.
• Do not disassemble or modify the product. If it must be modified, contact Kikusui
distributor/agent.
Maintenance and checking
• To avoid electrical shock, be absolutely sure to unplug the power cord before per-
forming maintenance or checking.
• Do not remove the cover when performing maintenance or checking.
• To maintain performance and safe operation of the product, it is recommended
that periodic maintenance, checking, cleaning, and calibration be performed.
Service
• Internal service is to be done by Kikusui service engineers. If the product must be
adjusted or repaired, contact Kikusui distributor/agent.
Check?

6 Safety Precautions TOS8030
Safety Precautions (Continued)
Label
• The product carries a label providing important safety information. If this label is
damaged or the information provided becomes illegible, replace it with a new
label. To obtain a new label, please contact your Kikusui distributor or agent.

TOS8030 Safety Precautions 7
Front and rear panels
• Before using the tester, make sure you read and understand Chapter 3, “Precau-
tions for Safe Testing.”
NC03368-1 MADE IN TAIWAN
When the voltage is
displayed here,
hazardoushigh
voltage ispresent.
Press STOP before
changing test
conditions.
Set the TEST VOLTAGE
knob to the MIN position
unless actually testing.
Danger
High-voltage
output terminal
Before turning the POWER
switch on, confirm that the
TEST VOLTAGE knob is set
to the MIN position.
Always connect the power
cordʼs protective conductor
terminal to ground.
If this lamp goes on,
hazardoushigh voltage
ispresent.
When connecting test
leads, connect the LOW
voltage terminal first.
INTERLOCKterminal

8 Overvoltage Category TOS8030
Organization of the Operation Manual
The information in this manual is organized into the following chapters:
Chapter 1 General
Provides a product overview and describes features and options.
Chapter 2 Installation and Preparations for Use
Describes how to unpack the tester for preparation before use.
Chapter 3 Precautions for Safe Testing
Gives the precautions to be observed at all times to ensure safe testing.
Chapter 4 Part Name’s and Functions
Gives the names of switches, terminals, and other controls of the TOS8030.
Chapter 5 Panel Operations
Describes procedures for testing.
Chapter 6 Remote Control
Gives the procedure for operating the tester from a remote location using the
REMOTE connector and the INTERLOCK terminal.
Chapter 7 Status Signal Output
Describes the status signal outputs (SIGNAL OUT).
Chapter 8 Maintenance and Calibration
Describes the maintenance and calibration of the tester. The tester must be periodi-
cally inspected, maintained, and calibrated to maintain performance.
Chapter 9 Specifications
Provides the electrical and mechanical specifications for the TOS8030.
Appendix
Provides guidelines for zero-start switch.

TOS8030 Contents 9
Contents
Testing Cannot be Performed at Unpacking - - - - - - - - - - - - - - - - - - - - - - - 1
To the Supervisor in Charge of Operation - - - - - - - - - - - - - - - - - - - - - - - - 2
Hazardous Operations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2
Safety Symbols - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3
Safety Precautions- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4
Chapter 1 General
1.1 Product Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11
1.2 Features - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11
1.3 Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12
Chapter 2 Installation and Preparations for Use
2.1 Unpacking Inspection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14
2.2 Precautions for Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15
2.3 Moving Precautions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 16
2.4 Connecting the Power Cord - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 16
2.5 Grounding - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18
Chapter 3 Precautions for Safe Testing
3.1 Startup Inspection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
3.2 Preparations Before Testing - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
3.2.1 Checking the Test Leads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
3.2.2 Wearing Rubber Gloves - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 19
3.3 Operating Precautions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 20
3.3.1 Connecting the Test Leads - - - - - - - - - - - - - - - - - - - - - - - - - - - 20
3.3.2 For High Voltage Output - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 22
3.3.3 Checking Safety after Shutting off the Output - - - - - - - - - - - - - - - 23
3.4 When Interrupting Operations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 24
3.5 Response to Emergencies - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 24
3.6 Stop Using the Tester in the Event of a Malfunction - - - - - - - - - - - - - - - - 25
Chapter 4 Part Name’s and Functions
4.1 Front Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 26
4.2 Rear Panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 29
Chapter 5 Panel Operations
5.1 Turning the POWER Switch On - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 30
5.2 Tester States and Indications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 31
5.2.1 Five States - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 32

10 Contents TOS8030
5.2.2 Events or Conditions That Can Activate the Protection Function - -33
5.3 Procedure for Test - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -34
5.3.1 Test Parameters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 34
5.3.2 Connection to the DUT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -37
5.3.3 Starting the Test and Making Judgments - - - - - - - - - - - - - - - - - - 37
Chapter 6 Remote Control
6.1 Using the REMOTE Connector - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -38
6.1.1 Remote Control with the Optional Remote Control Box - - - - - - - - 38
6.1.2 Remote Control Using a Control Device - - - - - - - - - - - - - - - - - - -39
6.2 Using the INTERLOCK Terminal - - - - - - - - - - - - - - - - - - - - - - - - - - - -42
Chapter 7 Status Signal Output
7.1 Five Signal Outputs - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -43
7.2 Using the SIGNAL OUT Terminals - - - - - - - - - - - - - - - - - - - - - - - - - - -43
7.2.1 Description of the Terminals - - - - - - - - - - - - - - - - - - - - - - - - - - 43
7.2.2 Example: Use of Signals - - - - - - - - - - - - - - - - - - - - - - - - - - - - -44
Chapter 8 Maintenance and Calibration
8.1 Cleaning the Tester - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -45
8.2 Inspection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -45
8.3 Calibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -45
Chapter 9 Specifications
9.1 Basic Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -46
9.2 Other Functions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -48
9.3 General Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -48
9.4 Dimensions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -49
Appendix
A.1 Improvements in Waveform Obtained Using a Zero-start Switch - - - - - - -50
Index ___________________________________________________ 51

TOS8030 General 11
Chapter 1 General
Provides a product overview and describes features and options.
1.1 Product Overview
This instrument is a withstanding voltage tester with a maximum output of
3 kV/10 mA. It is capable of performing withstanding voltage (dielectric strength)
tests for any electronic component or device*.
* The TOS8030 withstanding voltage tester was designed based on a product con-
cept of lightweight portability. As such, please check the specification require-
ments for the relevant standards when using the tester to test electronic devices
based on JIS, UL, or other standards. It is possible that the tester will not meet
some of the specification requirements.
• Note to the supervisor in charge of operation, and operator
The utmost care has been devoted to making this tester as safe as possible.
However, accidental contact with the device under testing (DUT), test lead,
test probe, or the periphery of the output terminals may result in electric
shock, since high voltage is applied to the DUT during tester operations.
Thus, use of the tester requires thorough safety measures, including provi-
sion of fences at the peripheries of the tester and DUT to prevent personnel
from approaching without good reason and to maintain safety.
1.2 Features
■Compact and lightweight
Dimensions: 160 W x 132 H x 230 D mm
Weight: Approx. 6 kg
The tester can be easily transported holding the grip on the top face of it.
■Judgment reference value of 0.1 mA to 11 mA (××
××0.1 / ×× ××1 range)
A current value used as judgment criteria can be set in the range of 0.1 mA to 11
mA. Particularly, from 0.1 mA to 9.9 mA (×0.1 range), it can be set in 0.1 mA steps.
It is capable of high-sensitivity and high-resolution detection, making it suitable for
withstanding voltage testing of electronic components.
■Test time of 0.5 s to 99 s (x0.1 / x1 range)
The test time can be set to a duration in the range from 0.5 s to 99 s, and in 0.1 s
intervals in the range from 0.5 s to 9.9 s (x0.1 range).
NOTE
WARNING

12 General TOS8030
■Displaying the cause of activation of the protective function as
a code number
If the protective function is activated, the cause is given as a code number via the
voltmeter. A code number is also indicated if there are discrepancies in setting test
conditions, allowing you to promptly correct the setting based on the code number
displayed.
■Remote control
The optional remote control box or test probe allows testing to be started or stopped
remotely.
■Status signal output
The tester has output terminals for READY, H.V ON, PASS, FAIL, and PROTEC-
TION signals to enable external monitoring of tester status.
Use this function with the remote control function to automate functions or to
reduce actual hands-on testing requirements.
■Sequence circuit with noise reduction features
For reliability, the sequence circuit incorporates thorough noise reduction features
to prevent noise-induced malfunctions.
1.3 Options
Remote Control Boxes
Connecting a remote control box to the REMOTE connector of our Withstanding
Voltage Testers, Insulation Resistance Testers, or Withstanding Voltage Insulation
Resistance Testers, enables remote starting or stopping of testing.
The RC01-TOS has one START switch; the RC02-TOS has two START switches.
With the RC02-TOS remote control box, testing can be started only when both
START switches are pressed simultaneously.
Description of RC01-TOS/RC02-TOS
OPERATE
switch
The START switch is enabled only when this switch is ON. Turning this
OFF halts testing.
START
switch
When the OPERATE switch is ON and the tester is in a READY state, press
this switch to begin testing.
STOP
switch
This switch shuts off the output voltage or cancels a status (such as FAIL). It
has the same function as the STOP switch on the tester.
RC01-TOS
200(W) x 70(H) x 39(D) mm
RC02-TOS
330(W) x 70(H) x 39(D) mm

TOS8030 General 13
High-voltage test probes
The HP01A-TOS and HP02A-TOS are test voltage output
probes designed to be connected to our withstanding volt-
age tester.
The test probes are constructed so that a test voltage is
output only when the slide lever at the grip of a test probe
is held and the trigger is activated with one hand, and a
switch on the upper part of the probe is pressed with the
other; that is, operation requires two hands. Releasing
either hand outputs a STOP signal, shutting off the tester’s
test voltage.
This features are intended to prevent inadvertent output of
test voltages when using these probes.
• When using a test probe, do not connect it to the DUT while a test voltage
is being output from the probe. Also, do not disconnect the probe from the
DUT while a test voltage is being output from the probe.
Disconnecting the probe from the DUT while high voltage is being output
from the probe may result in damage to the DUT. Additionally, disconnect-
ing the probe from the DUT in the middle of testing may result in a residual
electrical charge in the DUT, posing a significant hazard.
For these reasons, the probe must be connected to the DUT before testing
begins. When ending the test, confirm that the LED on the probe is not lit,
then disconnect the probe from the DUT.
High-voltage test leads
Model number Maximum usage voltage Cable length
HP01A-TOS 4 kVac (rms) 50 Hz/60 Hz
5 kVdc
Approx. 1.8 m
HP02A-TOS Approx. 3.5 m
Model number Maximum usage voltage Cable length Remarks
TL01-TOS 5 kVac (rms) 50 Hz/60 Hz
5 kVdc
Approx. 1.5 m Equivalent of TOS8030
accessory
TL02-TOS Approx. 3.0 m
HP01A-TOS
WARNING

14 Installation and Preparations for Use TOS8030
Chapter 2 Installation and Preparations for Use
Describes how to unpack the tester for preparation before use.
2.1 Unpacking Inspection
Check the TOS8030 tester upon receipt for any damage that may have occurred dur-
ing transit and to confirm that all accessories have been provided.
If the product is damaged or if any accessories are missing, notify your Kikusui dis-
tributor or agent.
Fig.2-1 Accessories
• We recommend retaining all packing materials in case the product needs to be
transported at a later date.
High-voltage test leads, 1 set
TL01-TOS, 1.5 m
Power cord, 1
[Z1-AB0-072]
Operation Manual, 1 copy
INTERLOCK terminal jumper, 1
or or
Plug: NEMA5-15
Rating: 125V/10A
[85-AA-0003]
Plug: CEE7/7
Rating: 250V/10A
[85-AA-0005]
Plug: GB1002
Rating: 250V/10A
[85-10-0790]
The power cord that is provided varies depending on
the destination for the product at the factory-shipment.
NOTE

TOS8030 Installation and Preparations for Use 15
2.2 Precautions for Installation
Always observe the following precautions and conditions when installing the tester
indoors:
■Do not use the tester in a flammable atmosphere.
To prevent explosions or fires, never use the tester near combustible materials such
as alcohol or thinner or in an atmosphere containing such vapors.
■Avoid locations subject to high temperatures or exposed to
direct sunlight.
Do not locate the tester near a heater or in areas subject to drastic temperature fluctuations.
Operating temperature range: 0°C to +40°C
Storage temperature range: -40°C to +70°C
■Avoid humid locations.
Do not install the tester in high-humidity locations, including near boilers, humidifi-
ers, or water supply.
Operating relative humidity range: 20% to 80% (with no dew condensation)
Storage relative humidity range: 90% or less (with no dew condensation)
Condensation may occur even within the operating relative humidity range. If so, do
not use the tester until it is completely dry.
■Do not install the tester in a corrosive atmosphere.
Do not install the tester in a corrosive atmosphere or in an atmosphere containing
sulfuric acid mist or the like. Doing so may result in corrosion of conductors or
improper connector contacts in the tester, resulting in malfunctions or failures and
leading to potential fires.
■Do not install the tester in locations with excessive dust.
Excessive dirt and dust may result in electric shock or fire.
■Do not use the tester in areas with poor ventilation.
The tester uses an unforced air cooling system. Provide adequate space around the
tester.
■Do not place any objects on the tester.
In particular, heavy objects placed on the tester may lead to malfunctions.
■Do not install the tester on tilted surfaces or in locations sub-
ject to vibration.
The tester may fall, resulting in damage or injury.
■Do not use the tester in locations subject to strong magnetic
or electric fields.
Using the tester in such locations may result in malfunctions, leading to electric
shock or fire.

16 Installation and Preparations for Use TOS8030
■Do not use the tester in locations where sensitive measuring
instruments or receivers are also being used.
Use of the tester may affect the reliability or accuracy of such instruments or
devices.
At a test voltage of more than 3 kV, corona discharges may occur that result in sig-
nificant wide-range RF emissions between the clips of the test leads. To minimize
these effects, keep the alligator clips as far apart as possible. Never allow an alliga-
tor clip or test lead to contact or approach the conductor surface (especially sharp
metal ends).
■Provide sufficient space around the power plug.
Do not use excessive force to insert the power plug into an electrical outlet that
resists insertion/extraction. Do not install objects near the plug that make plug inser-
tion/extraction difficult.
2.3 Moving Precautions
When moving or transporting the tester to another installation site, observe the fol-
lowing precautions:
■Turn the POWER switch off.
Moving the tester with the power turned on may result in electric shock or damage.
■Disconnect all wiring.
Moving the tester with cables connected may result in breaks in the cables or may
cause the tester to fall, which could result in injury.
■When transporting the tester, always use the dedicated pack-
ing materials.
Failure to use the dedicated packing materials may result in damage to the tester in
the event of a fall or due to vibrations during transport.
■Be sure the operation manual be included.
2.4 Connecting the Power Cord
This product is designed to meet the standards for Overvoltage Category II (energy-
consuming equipment to be supplied from fixed installation) of the IEC standards.
Checking the supply voltage
Before connecting the power cord, check the tester’s supply voltage (100 V or 200 V).
The tester’s nominal input rating is indicated on the rear panel.

TOS8030 Installation and Preparations for Use 17
• For the nominal input rating, the input voltage range for the tester to be
able to operate correctly is required. Use beyond the input voltage range
may result in malfunction or failure in addition to improper operation. Oper-
ate the tester with the supply voltage within the voltage range required.
The waveform of the power source should be a sine wave having a peak
value within 130% to 150% of the rms value. For information on the input
voltage range to the nominal input rating, see “General Specifications”
(page 48).
• The tester’s maximum rated output (3 kV at 10 mA) is specified at the nominal
input rating. When the input voltage is less than the nominal input rating, the max-
imum rated output is not assured.
The tester is equipped with a high voltage output transformer of 30 VA. In the fol-
lowing two instances, large currents (several tens of amperes) may flow in the AC
power line to which the tester is connected.
• A period of several tens of milliseconds during which the tester detects a FAIL
judgment if the DUT is judged FAIL.
• The instant at which testing is conducted
In such cases, take into account the capacity of the AC power line and the power
consumption of other electronic devices connected to that power line.
Connecting the power cord
• The power cord is a disconnecting device that disconnects the tester from the AC
power line. Connect it to an easily accessible electrical outlet.
• Do not use the power cord provided with the product as a power cord for other
equipment.
1. Check that the power supply meets the nominal input rating for the
tester.
2. Turn the POWER switch off.
3. Connect the power cord to the AC INPUT connector on the tester’s rear
panel.
4. Insert the power cord plug into an electrical outlet.
LINE VOLTAGE FREQUENCY VA MAX
100V 50/60Hz 50VA
Check the indicated voltage in this field.
CAUTION
NOTE
NOTE

18 Installation and Preparations for Use TOS8030
2.5 Grounding
Ground the tester by connecting the power cord to a properly grounded three-prong
electrical outlet.
Fig. 2-2 Protective Conductor Terminal
• This product is Safety Class I equipment (equipment with a protective con-
ductor terminal) under IEC Standards. To prevent electric shock, always
connect the product’s protective conductor terminal to an electrical ground
(safety ground).
■Grounding is essential.
If the tester is used without grounding and output is inadvertently short-circuited to
peripheral equipment such as a conveyor connected to ground or a nearby AC power
line*, the tester’s enclosure may be charged to hazardous voltages.
However, when the tester is properly grounded, it will not malfunction, and its
enclosure will not be charged to high voltages even if the output is short-circuited to
the ground via a peripheral, as noted above, or if the tester’s LOW terminal and
HIGH VOLTAGE terminal are short-circuited.
For these reasons, grounding the tester is essential to ensure safety.
* An AC power line is generally a power line connected to an electrical outlet to
which the tester’s power cord is connected. Here, it also refers to an AC line con-
nected to a privately-owned electrical power generation device.
Protective conductor terminal
Grounding is established when the
power cord is connected to a three-
prong electrical outlet.
AC INPUT
WARNING
Description