HIOKI 3153 User manual

INSTRUCTION MANUAL

3153

AUTOMATIC INSULATION

WITHSTANDING HiTESTER

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Contents

Introduction i

Inspection i

Safety Notes ii

Notes on Use v

Chapter Summary vi

Chapter 1 Overview 1

1.1 Product Introduction 1

1.2 Names and Functions of Parts

1.2.1 Front panel 3

1.2.2 Rubber keys 4

1.2.3 Rear panel 5

1.2.4 9615 H.V. TEST LEAD 6

1.2.5 REMOTE CONTROL BOX 7

1.3 External Dimensions 8

Chapter 2 Testing Arrangements 9

2.1 Connecting the Protective Ground Terminal 9

2.2 Connecting the External I/O Connector

2.3 Power Cord Connection

2.4 Powering On and Off the Unit

2.5 Connecting the 9615 H.V. TEST LEAD

2.6 Connecting the REMOTE CONTROL BOX

2.7 Installation of the Unit

2.8 Connection to the Measured Equipment

10
11
12
14
15
16
17

3

2.9 Startup Inspection

18

Chapter 3 Withstand Voltage ModeTesting Method 19

3.1 Withstand Voltage Mode Display 20

3.2 Displaying the "READY" State

3.2.1 Key-lock Function 23

3.3 "SETTING" State 24

3.3.1 Setting the Test Voltage Value 25

3.3.2 Setting the Upper (Lower) Limit Value 26

3.3.3 Setting the Test Time 27

3.3.4 Setting of the Ramp Timer 28

3.3.5 Setting the Type of Test Voltage 29

3.3.6 Examples of Settings 30

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3.4 Starting a Test 34

3.4.1 Executing a Test 34

3.4.2 Screening in "TEST" State 36

3.5 "PASS" or "FAIL" Determination 37

3.5.1 "PASS" State 37

3.5.2 Screening in "PASS" State 38

3.5.3 "FAIL" State 39

3.5.4 Screening in "FAIL" State 41

3.6 Automatic Discharge Function 42

Chapter 4 Insulation Resistance Mode Testing

Method 43

4.1 Insulation Resistance Mode Display 44

4.2 Displaying the "READY" State

4.2.1 Key-lock Function 47

46

4.3 "SETTING" State 48

4.3.1 Setting the Test Voltage Value 49

4.3.2 Setting the Lower (Upper) Limit Value 50

4.3.3 Setting the Test Time 52

4.3.4 Setting the Delay Time 53

4.3.5 Examples of Settings 54

4.4 Starting a Test 57

4.4.1 Executing a Test 58

4.4.2 Screening in "TEST" State 59

4.5 "PASS" or "FAIL" Determination 60

4.5.1 "PASS" State 60

4.5.2 Screening in "PASS" State 62

4.5.3 "FAIL" State 63

4.5.4 Screening in "FAIL" State 65

4.6 Automatic Discharge Function 66

Chapter 5 Auto Test Mode Testing Method 67

5.1 Auto Test Mode Display 68

5.2 Displaying the "READY" State

5.2.1 Key-lock Function 71

5.3 "SETTING" State 72

5.4 Starting a Test

5.4.1 Executing a Test 74

5.4.2 Screening in "TEST" State 75

5.5 PASS or FAIL Determination 76

5.5.1 "PASS" State 76

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70

73

5.5.2 Screening in "PASS" State 78

5.5.3 "FAIL" State 79

5.5.4 Screening in "FAIL" State 81

5.6 Automatic Discharge Function 82

Chapter 6 Program Mode Testing Method 83

6.1 Program Mode Display 84

6.2 Displaying the "READY" State

6.2.1 Key-lock Function 87

86

6.3 Program Setting State 88

6.3.1 Examples of Settings 91

6.4 Program-File Loading 96

6.5 Starting a Test

6.5.1 Executing a Test 98

6.5.2 Screening in "TEST" State 99

97

6.6 PASS or FAIL Determination 100

6.6.1 "PASS" State 100

6.6.2 Screening in "PASS" State 101

6.6.3 "FAIL" State 102

6.6.4 Screening in "FAIL" State 103

6.7 Automatic Discharge Function 104

Chapter 7 Optional Functions 105

7.1 PASS Hold Function 108

7.2 FAIL Hold Function

7.3 Hold Function

7.4 Momentary Out

7.5 Double Action

7.6 FAIL Mode

7.7 Interface Command "START"

7.8 Inter-lock Function

7.9 Setting of an Output-Voltage Restricting Value

7.10 Insulation Resistance Test Measurement Range

7.11 Insulation Resistance Test Termination Mode
Settings

7.12 Setting for Screening during the Ramp-Up Time

7.13 PC Interface

7.14 START Protection Function

7.15 TEST-Signal Output

7.16 Example of Optional Functions Use

109
110
112
113
114
115
116
117
118

119
121
122
123
124
125

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Chapter 8 Saving/loading Preset Values 127

8.1 Saving Preset Values 127

8.1.1 Procedure for Saving Data 127

8.1.2 Example of Saving

130

8.2 Loading Preset Values 132

8.2.1 Procedure for Loading Data 132

8.2.2 Example of Loading 135

Chapter 9 External Interface 137

9.1 External I/O Terminal 137

9.1.1 Signal Line 138

9.1.2 Example of Input Signal Connection 140

9.1.3 Example of Output Signal Connection 142

9.1.4 Inter-lock Function 144

9.1.5 Selecting a Program Test File 145

9.1.6 Timing Chart of External I/O Terminal 147

9.2 Buzzer 152

Chapter 10 PC Interface 153

10.1 RS-232C Interface 154

10.1.1 Specifications 154

10.1.2 Preparing for Data Transfer 155

10.1.3 RS-232C Command Transfer Methods 157

10.2 Command Table 162

10.3 RS-232C Command Reference

10.3.1 Common Command Messages 166

10.3.2 Specific Command Messages 169

165

10.4 Response Formats 199

10.5 GP-IB Interface

10.5.1 Specifications 201

10.5.2 Preparing for Data Transfer 201

201

10.6 GP-IB Command Transfer Methods 203

10.7 GP-IB Commands

10.8 GP-IB Command Reference

10.8.1 Command Reference 210

10.8.2 Specific Command Messages 214

209
210

Chapter 11 Specifications 217

11.1 Basic Specifications 217

11.1.1 Withstand Voltage test portion 217

11.1.2 Insulation resistance test portion 219

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11.1.3 Timer Section 220

11.1.4 Interface 221

11.1.5 Program Function 222

11.1.6 Other Functions 223

11.2 General Specifications 224

Chapter 12 Maintenance and Inspection 225

12.1 Maintenance and Service 225

12.2 Fuse Replacement

12.3 Troubleshooting

12.4 Displaying Errors

12.5 Removing the Lithium Battery

12.6 Resetting the System

227
228
229
230
231

Appendix APPENDIX 1

9613 REMOTE CONTROL BOX (SINGLE) APPENDIX 1
9614 REMOTE CONTROL BOX (DUAL)
9615 H.V. TEST LEAD (Standard Accessory)

APPENDIX 2

APPENDIX 3

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p

Introduction

Thank you for purchasing the HIOKI 3153 AUTOMATIC INSULATION/
WITHSTANDING HiTESTER. To obtain maximum performance from the
product, please read this manual first, and keep it handy for future reference.

Inspection

When you receive the product, inspect it carefully to ensure that no damage
occurred during shipping. In particular, check the connectors. If damage is
evident, or if it fails to operate according to the specifications, contact your
dealer or Hioki representative.

i

NOTE

Accessories

Verify that the following standard accessories are complete.
Instruction Manual 1
Spare fuse (built into the power inlet) 1
Grounded three-core power cord 1
9615 H.V. TEST LEAD (High voltage and return side ) 1

Shipment of the unit

Use the original packing materials when reshipping the product, if possible.

Warranty

HIOKI cannot be responsible for losses caused either directly or indirectly by
the use of the 3153 with other equipment, or if ownership is transferred to a
third party.

Before using the product, make sure that the insulation on the leads is undamaged
and that no bare conductors are improperly exposed. Using the product in such
conditions could cause an electric shock, so contact your dealer or Hioki
re

resentative for repair.

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Safety Notes

This product is designed to conform to IEC 61010 Safety Standards, and

ARNING

has been thoroughly tested for safety prior to shipment. However,
mishandling during use could result in injury or death, as well as
damage to the product. Be certain that you understand the instructions
and precautions in the manual before use. We disclaim any
responsibility for accidents or injuries not resulting directly from
product defects.

This manual contains information and warnings essential for safe operation
of the product and for maintaining it in safe operating condition. Before
using the product, be sure to carefully read the following safety notes.

Safety Symbols

The symbol printed on the product indicates that the user should

refer to a corresponding topic in the manual (marked with the
symbol) before using the relevant function.

In the manual, the symbol indicates particularly important

information that the user should read before using the product.

Indicates that dangerous voltage may be present at this terminal.

Indicates a fuse.

Indicates AC (Alternating Current).

Indicates both DC (Direct Current) and AC (Alternating Current).

Indicates a protective conductor terminal.

Indicates the ON side of the power switch.

Indicates the OFF side of the power switch.

The following symbols in this manual indicate the relative importance of
cautions and warnings.

Indicates that incorrect operation presents an extreme hazard that

DANGE

ARNING

could result in serious injury or death to the user.

Indicates that incorrect operation presents a significant hazard that
could result in serious injury or death to the user.

CAUTION

NOTE

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Indicates that incorrect operation presents a possibility of injury to
the user or damage to the product.

Advisory items related to performance or correct operation of the
product.

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iii

Overvoltage Categories

This product conforms to the safety requirements for CAT II measurement
products.
To ensure safe operation of measurement products, IEC 60664 establishes
safety standards for various electrical environments, categorized as CAT I to
CAT IV, and called overvoltage categories. These are defined as follows.

CAT I

CAT II

CAT III

CAT IV

Secondary electrical circuits connected to an
AC electrical outlet through a transformer or
similar device.

Primary electrical circuits in equipment connected to
an AC electrical outlet by a power cord (portable
tools, household appliances, etc.)

Primary electrical circuits of heavy equipment (fixed
installations) connected directly to the distribution
panel, and feeders from the distribution panel to
outlets.

The circuit from the service drop to the service
entrance, and to the power meter and primary
overcurrent protection device (distribution panel).

Higher-numbered categories correspond to electrical environments with
greater momentary energy, so a measurement product designed for CAT III
environments can endure greater momentary energy than one designed for
CAT II. Using a measurement product in an environment designated with a
higher-numbered category than that for which the product is rated could
result in a severe accident, and must be carefully avoided.

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iv

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Accuracy

The specifications in this manual include figures for "measurement accuracy"
when referring to digital measuring instruments, and for "measurement
tolerance" when referring to analog instruments.

f.s.

rdg.

dgt.

(maximum display or scale value, or length of scale)
Signifies the maximum display (scale) value or the length of the scale
(in cases where the scale consists of unequal increments or where the
maximum value cannot be defined).
In general, this is the range value (the value written on the range
selector or equivalent) currently in use.

(displayed or indicated value)
This signifies the value actually being measured, i.e., the value that is
currently indicated or displayed by the measuring instrument.

(resolution)
Signifies the smallest display unit on a digital measuring instrument,
i.e., the value displayed when the last digit on the digital display is
"1".

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v

Notes on Use

Follow these precautions to ensure safe operation and to obtain the full
benefits of the various functions.

To avoid electric shock, do not remove the product's case. The

DANGE

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internal components of the product carry high voltages and may
become very hot during operation.
The vinyl shield on the 9615 H.V. TEST LEAD alligator clip is not high
voltage insulated. Do not touch when high voltage is applied.

To avoid electric shock, do not allow the product to get wet, and do
not use it when your hands are wet.
To avoid electric shock, be sure to connect the protective ground
terminal to a grounded conductor.
Avoid stepping on or pinching the cable, which could damage the
cable insulation.
Before turning the product on, make sure the source voltage matches
that indicated on the product's power connector. Connection to an
improper supply voltage may damage the product and present an
electrical hazard.
Replace the fuse only with one of the specified characteristics and
voltage and current ratings. Using a non-specified fuse or shorting
the fuse holder may cause a life-threatening hazard.
Fuse type: 250VT10AL (100-120 V), 250VT5AL (200-240 V)

CAUTION

NOTE

To avoid electrocution, turn off the power to all devices before plugging or
unplugging any of the interface connectors.
To avoid damaging the power cord, grasp the plug, not the cord, when
unplugging the cord from the power outlet.
To avoid damaging H.V. TEST LEAD, do not kink or pull on the leads.
For safety reasons, when taking measurements, only use the 9615 H.V.
TEST LEAD provided with the product.
To avoid damage to the product, protect it from vibration or shock during
transport and handling, and be especially careful to avoid dropping.

Do not use the product near a device that generates a strong electromagnetic field or
electrostatic charge, as these may cause erroneous measurements.

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vi

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Chapter Summary

Chapter 1 Overview

Describes an overview, features, and the names and functions of the parts of
the product.

Chapter 2 Testing Arrangements

Describes particulars of testing arrangements.

Chapter 3 Withstand Voltage Mode Testing Method

Describes the procedures for setting the withstand-voltage mode testing,
testing method, and test decisions.

Chapter 4 Insulation Resistance Mode Testing Method

Describes the procedures for setting the insulation-resistance mode testing,
testing method, and test decisions.

Chapter 5 Auto Test Mode Testing Method

Describes the procedures for setting the auto test mode testing, testing
method, and test decisions.

Chapter 6 Program Mode Testing Method

Describes the procedures for setting the program mode testing, testing
method, and test decisions.

Chapter 7 Optional Functions

Describes procedures for setting optional functions.

Chapter 8 Saving/Loading Preset Values

Describes procedure for saving and loading test values.

Chapter 9 External Interface

Describes use of the external I/O, and buzzer.

Chapter 10 PC Interface

Describes communication procedures and commands for an RS-232C/GP-IB
interface.

Chapter 11 Specifications

Contains the unit specifications such as the general specifications,
measurement accuracy, etc. of the unit.

Chapter 12 Maintenance and Inspection

Covers the maintenance and inspection, fuse replacement, ultimate disposal,
and system reset.

Appendix

Covers the options of the unit.

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1

Chapter 1

1

2

1.1 Product Introduction

(1) Easy testing conforming to standards

With the unit insulation-resistance and withstand-voltage tests based on a
wide variety of standards can be performed. Accurate test results can be
obtained by comparative screening functions that use upper- and lower-limit
values, timer functions, and ramp up/down timer functions that control test­voltage increases/decreases.

(2) Automatic insulation-resistance testing and withstand-voltage

testing

The Continuous Test mode allows consecutive insulation-resistance and
withstand-voltage tests to be performed.

Overview

3

4

5

6

7

8

9

(3) Fluorescent indicator

The large, easy-to-read fluorescent display permits quick checking of the
testing state and result.

(4) Analog Voltage Measurement

The voltage is digitally displayed on the fluorescent indicator. This value can
also be checked on the analog voltmeter.

(5) Saving testing set values (Memory function)

This unit is provided with a function for saving the set values used in a test,
allowing quick switching between different testing set values to meet a
variety of standards and regulations. Up to 10 values may be saved for each
test mode (withstand-voltage mode or insulation-resistance mode). The
values immediately prior to a power shutdown are saved in the unit, and the
unit restarts with these settings the next time.

10

11

12

13

14

A

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1.1 Product Introduction

2

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(6) REMOTE CONTROL BOX

The 9613 REMOTE CONTROL BOX (single-hand) or the 9614 REMOTE
CONTROL BOX (dual-hand) can be connected to the external switch
terminal to perform 3153 start/stop control.

(7) External I/O

The external I/O terminal generates signals according to the state of the

3153. It can be used to feed signals for the

START

and

STOP

key.

(8) RS-232C/GP-IB interface as a standard feature

Automatic testing and saving of the test results are possible with the use of a
computer.

(9) Program test

Withstand-voltage and insulation-resistance tests under various conditions
can be conducted successively at your option. Through the use of a 3930
HIGH VOLTAGE SCANNER, many test points can be tested at one time.
Up to 32 files can be created, with each file containing up to 50 steps.

(10) Switching-power-supply method

The adoption of the PWM switching power supply allows the unit to output
any preset voltage. The test voltage is not affected by fluctuations in the
power-supply voltage of this unit.

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3

1.2 Names and Functions of Parts

1

1.2.1 Front panel

To prevent electric shock, when the DANGER lamp is lit, never touch the

ARNING

1

2

3

4

5

HIGH or LOW terminals, H.V. TEST LEAD, or the tested object.

2

3

14

13

12

4

5

6

11

7

10

6

7

8

9

8

1 Analog voltmeter

2

DANGER lamp

3 HIGH terminal

4 LOW terminal

5 External switch

terminal

6 Ilamp

7 Wlamp

8 Rubber keys

9 DOWN lamp

10 UP/DELAY

lamp

11 Main power switch

Indicates output-voltage value.

This lamp lights to warn that voltage is present between the terminals during
testing.

The HIGH terminal is a high-voltage terminal for voltage outputs.

The LOW terminal is a low-voltage terminal for voltage outputs. It has the same
electric potential as the unit body.

Used for the switch signal line plug for the REMOTE CONTROL BOX.

This lamp lights when insulation-resistance mode is selected and during
insulation-resistance testing.

This lamp lights when withstand-voltage mode is selected and during withstand­voltage testing.

The 14 rubber keys include 13 function keys and a
The six function keys offer a variety of settings, used in combination with the

SHIFT

This lamp lights during ramp-down from withstand-voltage testing.

This lamp lights during ramp-up to withstand-voltage testing and during
insulation-resistance testing delays. (However, it does not light during time testing
when insulation-resistance test termination mode is set to 0 [initial setting].)

Powers the 3153 product on or off.

key.

SHIFT

key.

9

10

11

12

13

14

12 STOP key

13 START key

14 VFD (vacuum

fluorescent display)

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Normally used to terminate a test.

Used to start a test. This key functions only when the

Displays various information, such as the test state and test results.

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READY

1.2 Names and Functions of Parts

lamp is lit.

A

4

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1.2.2 Rubber keys

1

/

2

/

3

ON/OFF key

key

key

1

6

7

8 9

2

10 11 12

3

4

Moves the flashing cursor.
The switching range is preset before shipment:

Withstand-voltage test:

Test-voltage value ⇔ Upper-limit value ⇔ Lower-limit value ⇔
Test time ⇔ Ramp-up time ⇔ Ramp-down time ⇔ Test-voltage type

Insulation-resistance test:

Test-voltage value ⇔ Lower-limit value ⇔ Upper-limit value ⇔
Test time ⇔ Delay time

To display the flashing cursor, press the

keys. The cursor appears,

/

displaying the preset comparative voltage value or test-voltage value.
(withstand-voltage test and insulation-resistance test)

Changes the position at which the flashing cursor appears.

Switches on/off the set value for the position of the flashing cursor. If
turned off, the set value is not used in testing.
However, the following key can't perform the switching on/off:
Withstand-voltage test: Test-voltage type, Test voltage, Upper-limit value
Insulation-resistance test: Test voltage, Lower-limit value

5

4

LOCK key
(LOCAL key)

5

SHIFT key

6

W key
(withstand-voltage test)

7

I key
(insulation-resistance test)

8

W→I key

9

I→W key

10

PROG key

Used to lock the keys.
When pressed, the

STOP

key, and Key Lock Cancel key (

LOCK

key disables all keys except the

LOCK+SHIFT

key). See the

START

key,

"Key-lock Function" section. (Chapter 3 to 6)
In the remote state, this key functions as a

LOCAL

key. It cancels the

remote state.

Used in combination with other keys.

①

SHIFT

+ key

Displaying the Preset-data loading screen. (See Chapter 8)

②

SHIFT

+ key

Displaying the Preset-data saving screen. (See Chapter 8)

③

SHIFT+UNLOCK

key
Disabling the key lock function. Cancels the key lock. When GP-IB is
used for communication, go to LOCAL state.

④

SHIFT

+

key

/

Changing the increment size of setting values.

Performs withstand-voltage tests and settings. (See Chapter 3)

Performs insulation-resistance tests and settings. (See Chapter 4)

Tests for withstand-voltage, then insulation-resistance. (See Chapter 5)

Tests for insulation-resistance, then withstand-voltage. (See Chapter 5)

Creates or edits program tests or their files. (See Chapter 6)

11

PG.LOAD key

12

ENTER key

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1.2 Names and Functions of Parts

Used to load program data. (See Chapter 6)

Used to create or edit program test files. (See Chapter 6)

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5

1.2.3 Rear panel

To prevent electric shock, when the DANGER lamp is lit, never touch the

ARNING

HIGH or LOW terminals, H.V. TEST LEAD, or the tested object.

5 6 7

1

1

2

3

4

2

3

4

1 Scanner connection

terminal

2 Power inlet

3 Fuse holder

4 Protective ground

terminal

5 RS-232C terminal

6 External I/O

terminal

7 GP-IB terminal

10

8

9

11

Terminal for connecting the optional 3930 HIGH VOLTAGE
SCANNER. Do not connect any scanner other than the 3930.

Connect the grounded three-core power cord supplied here.

Contains a power fuse.

Used to earth a protective ground wire. Be sure to make grounding
connections before starting a test.

Used for remote control with RS-232C.

For output of 3153 state and input of start and stop signals.

Used for remote control with GP-IB.

5

6

7

8

9

10

11

8 HIGH terminal

9 LOW terminal

10 Buzzer adjustment

knob

11 Vent holes

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A high-voltage terminal for voltage output. Connected to the
HIGH terminal on the front panel.

A low-voltage terminal for voltage output. Contains the same
electrical potential as this units casing.

Used for buzzer sound adjustment. Two knobs are provided: one
for PASS screening and one for FAIL screening.

Holes for cooling the inside of the unit. Both sides of the unit also
have vent holes.

1.2 Names and Functions of Parts

12

13

14

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1.2.4 9615 H.V. TEST LEAD

The vinyl shield on the 9615 H.V. TEST LEAD alligator clip is not high

DANGE

voltage insulated. Do not touch when high voltage is applied.

1

High-voltage side (red)

2

1

Low-voltage side (black)

3

1 Alligator clip

2 High-voltage output

plug

3 Low-voltage output

plug

Connect to a test point on the tested object.

Connect to the HIGH terminal on the unit.

Connect to the LOW terminal on the unit.

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1.2 Names and Functions of Parts

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7

1.2.5 REMOTE CONTROL BOX

9613 REMOTE CONTROL BOX (SINGLE)

2

1

9614 REMOTE CONTROL BOX (DUAL)

2

1

4

3

4

3

2

1 OPERATE switch

2 START key

3 STOP key

4 Switch signal-line

plug

Used to enable remote-control operation. When this switch is ON,
the

START

Works in the same manner as the
the 9614 REMOTE CONTROL BOX (dual-hand), the two

and

STOP

keys for remote control are active.

START

key on the unit. With

START

switches must be pressed.

Works in the same manner as the

STOP

key is ON during a test or when a voltage is being output.

STOP

key on the unit. The

Connect to the external switch terminal on the unit.

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1.2 Names and Functions of Parts

8

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1.3 External Dimensions

m
m
1

±

2
4

m
m
2

±

0
8
4

m
m
1

±

0
3

m
m
2

±

5
5
1

m
m
1

±

6
1

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320±2 mm

1.3 External Dimensions

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9

Chapter 2

1

2

Testing Arrangements

2.1 Connecting the Protective Ground Terminal

To avoid electric shock, be sure to connect the protective ground

ARNING

terminal to a grounded conductor.
To avoid electric shock, connect the protective ground terminal to a
grounded conductor before making any other connections.

1. Using a Phillips-head screwdriver, remove the protective ground terminal

from the rear of the unit.

2. Connect an electric wire with a sufficient current capacity to the

protective ground terminal, and secure the wire using a Phillips-head
screwdriver.

3

4

5

6

7

8

9

NOTE

3. Ground the other end of the wire.

10

11

12

13

14

A

If the ground-type double-pole power cord that is supplied with the unit is used, the
unit is automatically grounded.

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2.1 Connecting the Protective Ground Terminal

10

(

)

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2.2 Connecting the External I/O Connector

Connect the external I/O connector before turning on the power. If the
external I/O connector is installed or removed following startup, malfunction
may result.

1. Insert the external I/O connector into the external I/O terminal.

2. Secure the external I/O connector using the hooks of the external I/O

terminal.

Hook of the external I/O terminal

NOTE

External I/O connector

For the specifications of the external I/O connector, see Section 9.1.
If the optional "Interlock" function is set to "1: Set," set Pin 10 of the external I/O
terminal to "LOW level" before starting a test. "
"LOW level" is set.

See Section 9.1.4

Err 000

" will be indicated until

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11

2.3 Power Cord Connection

1

ARNING

Before turning the product on, make sure the source voltage matches
that indicated on the product's power connector. Connection to an
improper supply voltage may damage the product and present an
electrical hazard.

Supply voltage indicated on the rear panel

1. Be sure that the main power switch is turned to OFF.

2. Connect the grounded three-core power cord provided to the power inlet

on the back of the unit.

3. Insert the plug into the grounded outlet.

2

3

4

5

6

7

8

3

9

10

11

2

12

13

14

A

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2.3 Power Cord Connection

12

W

p

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2.4 Powering On and Off the Unit

Before turning on the power, make sure that the voltage of the power

ARNING

supply being used matches the supply voltage indicated on the rear
panel of the unit. If an attempt is made to use an improper supply
voltage, there is danger of damage to this unit and of life-threatening
risk to the operator. Apply a voltage within the acceptable power­voltage range. Otherwise, damage to the unit or electrical accidents
may result.

NOTE

The settings immediately prior to power shutdown are saved. The unit restarts
with these settings, even following a power interruption. When settings are
modified, however they are only saved after running a test.
Allow10minuteswarmingupafterpoweringon.
The REMOTE CONTROL BOX, external I/O device, RS-232C interface, and GP­IB interface are active only when they are connected prior to startup. If these
devices are connected after the power is turned on, the protective function may be
activated, thus causing a malfunction.
A filter circuit is provided in the first stage of the power supply. Therefore, power
(apparent power) is consumed even when the main power switch is turned OFF,

rovided that the unit is connected to an outlet.

50 Hz (Effective voltage)

60 Hz (Effective voltage)

2

x 1.4 x 10

2

x 1.7 x 10

-3

-3

(VA)

(VA)

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13

(1) Powering on the unit

1. Turn the main power switch to ON

Main power switch

2. The model name and version number are displayed as below:

Software version

Model name

"Version 1.00" is displayed.

Interface
"RS-232C 9600 bps" is displayed.

"rS.0" ：RS-232C 9600 bps
"rS.1" ：RS-232C 19200 bps
"G.XX" ：GP-IB address XX

（ｌ）

.

1

2

3

4

5

6

7

3. When the

mode), the keys are ready for operation. (See Section 7.5)

(2) Powering off the unit

1. Following a test, make sure the analog voltmeter is at 0 kV, the

lamp is OFF, and the

2. Turn OFF the Main Power switch.

READY

lamp is lit (it does not light up in the Double Action

READY

lamp is lit.

Main power switch

8

9

DANGER

10

11

12

13

14

A

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14

W

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2.5 Connecting the 9615 H.V. TEST LEAD

To prevent electrical shock, turn off the power unit, make sure that

ARNING

there is no high voltage being applied to the output, confirm the
following 3 items, and connect the 9615 H.V. TEST LEAD.
(1) The analog voltmeter reads 0 kV.
(2) The
(3) The
Before connecting the 9615 H.V. TEST LEAD, be sure to check its
insulation for tearing and metal exposure.Using the product in such
conditions could cause an electric shock, so contact your dealer or
Hioki representative for repair.
To avoid electric shock, make sure the 9615 H.V. TEST LEAD is
securely connected before starting a test, as a loose test lead can
cause a hazard when a voltage is output.

DANGER lamp is OFF.

READY

lamp is lit (it is off in the Double Action mode).

1. Remove the LOW terminal by turning it counterclockwise.

Low terminal

2. As shown in the figure, insert the plug on the H.V. TEST LEAD (low

voltage side).

Plug on the H.V. TEST LEAD
(low voltage side)

3. Secure the LOW terminal by turning it clockwise.

4. Connect the plug on the H.V. TEST LEAD (high voltage side) to the

HIGH terminal.

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15

2.6 Connecting the REMOTE CONTROL BOX

To prevent electrical shock, turn off the power unit, make sure that

ARNING

there is no high voltage being applied to the output, confirm the
following 3 items, and connect the 9615 H.V. TEST LEAD.
(1) The analog voltmeter reads 0 kV.
(2) The
(3) The
To prevent malfunctions, do not remove the REMOTE CONTROL BOX
following startup. Before removing it, be sure to turn OFF the power.
To avoid electric shock, when using the REMOTE CONTROL BOX,
provide safety measures to keep the output-voltage terminal, tested
object, and H.V. TEST LEAD out of contact with one another when
they are in the TEST state.

DANGER lamp is OFF.

READY

lamp is lit (it is off in the Double Action mode).

Connection of the REMOTE CONTROL BOX (9613/9614) enables start/stop
operations to be performed easily.

1. Make sure the Main Power switch and OPERATE switch on the

REMOTE CONTROL BOX are OFF.

Main power switch

OPERATE switch on the
REMOTE CONTROL BOX

2. Insert the switch signal-line plug into the external switch terminal.

Check the direction of the switch signal line.

3. Turn ON the

OPERATE

switch can be turned ON/OFF even following startup.

OPERATE

switch of the REMOTE CONTROL BOX. The

External switch terminal

Switch signal-line plug

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2.6 Connecting the REMOTE CONTROL BOX

16

,

_____________________________________________________________________________________________

2.7 Installation of the Unit

Temperature: 0 to 40℃

Humidity: 80% RH or less (no condensation)

Avoid the following locations:

・Subject to direct sunlight.
・Subject to high levels of dust, steam, or corrosive gases (Avoid using the

equipment in an environment containing corrosive gases (e.g., H2S, SO2,
NI2,andCI2) or substances that generate harmful gasses (e.g., organic
silicones, cyanides, and formalins)).

・Subject to vibrations.
・In the vicinity of equipment generating strong electromagnetic fields.

NOTE

The noise generated by this unit may affect equipment located around the unit.
Install the unit in such a way that the vent holes on both sides and at the rear of
the unit are not blocked

so that the unit can function normally.

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R

17

2.8 Connection to the Measured Equipment

Observe the following precautions to avoid electric shock.

DANGE

Make sure that no high voltage is being applied to the output, confirm
the following items, and connect the H.V. TEST LEAD.
(1) The analog voltmeter reads 0 kV.
(2) The
(3) The
In the TEST state, never touch the output-voltage terminal, H.V. TEST
LEAD, or tested object.
Even following a test, there may be a residual voltage at the output
terminal. Therefore, before touching the output-voltage terminal, H.V.
TEST LEAD, or tested object, make sure that no high voltage is being
applied between the output terminals.

DANGER lamp is OFF.

READY

lamp is lit (it is off in the Double Action mode).

NOTE

1. Make sure the analog voltmeter is at 0 kV and the

2. Make sure the unit is in the READY state with the

DANGER

READY

lamp is OFF.

lamp ON (it is

OFF in the Double Action mode).

3. Connect the LOW terminal probe to the tested object. Fasten the probe

securely to prevent it from loosening during a test.

4. Following the procedure described above, connect the HIGH terminal

probe to the tested object.

Note that taking measurements or routing cables in a humid location may cause

errors in insulation-resistance tests.
If the HIGH and LOW voltage output terminals short-circuit or a dielectric

breakdown occurs in the tested object during the test, noise will be generated and

such noise may lead to a malfunction of this unit or of a nearby electronic device.
If this problem occurs, connect a ferrite core or a resistor to the H. V. TEST LEAD

(high voltage side).

When using a resistor, choose one appropriate for the power rating and withstand

voltage. Also, be alert to any drop in test voltage.

Beware of electric shock when connecting the resistor.

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2.8 Connection to the Measured Equipment

18

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2.9 Startup Inspection

To ensure safe testing, check the following before starting operation:

(1) Breaking current (withstand-voltage mode)

1. Prepare a resistor with a resistance smaller than that of the calculation
result from the output voltage and test upper-limit value (breaking current)
that are preset in the withstand-voltage test.

(Output voltage÷Upper-limit value (Breaking current) = Resistance)

A high-voltage resistor with a power rating larger than the power
calculated from the output voltage and resistance is recommended.
((Output voltage)
Example high-voltage resistor:

KOA Corp.'s GS Series High Voltage High Resistance Thick Film

Resistor

2. Set an upper-limit value.

3. Connect the resistor to the H.V. TEST LEAD.

4. Start the test. Confirm that the current is cut off when the preset voltage
is output. (i.e., make sure the unit is in the FAIL state).

2

÷Resistance<Power rating)

(2) Measured resistance (insulation-resistance mode)

1. Calculate the resistance based on the test voltage set for insulation­resistance testing and the measured current (1 mA), and prepare a resistor
whose resistance is larger than that of the calculation result.

(output-voltage÷measured current (1 mA)≦resistance value)

2. Specify the test voltage.

3. Connect the resistor that you prepared to the H.V. TEST LEAD.

4. Make sure that the resistance measured matches the resistor that you
prepared.

(3) Analog voltmeter

1. Before turning on the power, make sure the analog voltmeter is at 0 kV.

2. If the voltage reading is not at zero, adjust the value to zero using a
slotted screwdriver.

(4) Interlock

If the Interlock function is set, make sure the Interlock function works
properly before starting operation. (See Section 9.1.4)

(5) Key inspection

1. Turn off the power, and unplug the power cord from the power outlet.

2. For both the START and STOP keys on the front panel of the unit, press
the center of the key, and make sure you feel it click. The click is less
noticeable when the edges of the keys are pressed.

＊Clicking

When a key is pressed slowly, there is a moment of slight resistance and a
feeling that the key cannot be pressed any further. When the key is
pressed further after this point, a clicking sensation can be felt.

3. If you do not feel a click, the key may be broken.

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y

19

Chapter 3

1

2

Withstand Voltage Mode

Testing Method

This chapter describes how to set withstand-voltage mode test conditions and
the proper testing procedure.
Read chapter 2, and make the necessary preparations for testing.

Press theWkey to enter withstand-voltage mode.
(The W lamp above the key to the left lights.)

Flashing

3

4

5

6

7

8

NOTE

Note that the output waveform may be distorted when conducting an AC withstand
voltage test for a voltage-dependent device or object (e.g., ceramic capacitor).
Excessivel

large distortion maydamage the device or tested object.

9

10

11

12

13

14

A

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20

_____________________________________________________________________________________________

3.1 Withstand Voltage Mode Display

READY

｢READY 状態｣

state

・The unit is ready for starting a test. The
・Press the

START

key while in the READY state.

READY

・Press the / key while in SETTING state.
・Press

SHIFT+STOP

keys to display the Optional Function Setting screen.

・Key-lock Function can be used. (See Section 3.2.1)

/ key

Setting optional functions

｢READY 状態｣

SHIFT + STOP key

Setting the optional functions allows testing under various conditions.
(See Chapter 7)

STOP key

lamp is turned on.

SETTING

｢READY 状態｣

・
・

state

Test parameters can be set.
To terminate the test settings and return to the READY state, press the
finalize the settings.

Setting items

Test-voltage value

Upper (Lower)-limit value

Test time

Ramp timer (ramp-up time, ramp-down time)

Test-voltage type (AC 50 Hz/AC 60 Hz/DC)

STOP

key, which will

See Section 3.3.1

See Section 3.3.2

See Section 3.3.3

See Section 3.3.4

See Section 3.3.5

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21

START key

TEST

｢READY 状態｣

state

・When the unit is in the TEST state, the

progress.

・The measured-current value is compared with the upper- and lower-limit values. If the

measured-current value deviates from these values, the unit shifts to the FAIL state and the
test is terminated. When the preset test time has elapsed, if there have been no deviations, the
unit shifts to the PASS state.

・Press the

Key operation in the TEST status

PASS

｢READY 状態｣

・
・The

・The PASS state can be maintained if the PASS Hold function is disabled in the optional

STOP

state

indicates that the measured object passed the test set in the READY state.

PASS

PASS

before switching to the READY state.

settings. (See Section 7.1)

See Section 3.4.2

lamp is lit. This indicates that a test is in

TEST

key to forcibly terminate the test.

Forced ending

See Section 3.5.1

lamp is turned on. The PASS state screen is displayed for about 0.3 second

Press the

STOP

key.

1

2

3

4

5

6

7

8

state

FAIL

｢READY 状態｣

・
・The

・The FAIL state can be maintained. To return to the READY state, press the
・FAIL Hold function can be disabled in the optional settings.The FAIL-state screen is

indicates that the tested object failed to pass the test set in the READY state.

FAIL

lamp will light up, accompanied by

FAIL

upper-limit value, or by

which will cancel the FAIL Hold function.

displayed for 0.3 seconds, and the unit then switches to the READY state.
(See Section 7.2)

See Section 3.5.3

LOWER

if the measured value is below the lower-limit value.

UPPER

. if the measured value exceeds the

STOP

9

10

11

key,

12

13

14

A

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22

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3.2 Displaying the "READY" State

In the READY state, the unit is always ready to start a test. The

READY

lamp remains lit to indicate the READY state.
Saving and loading for setting data and the setting of optional functions are
made following the READY state.

1 2 3

4

5

1 Test-voltage

value

2 Upper-limit value

icon and Lower­limit value icon

3 Upper-limit value

4 Test time

Indicates the voltage value being output.

The symbol appears when the upper-limit value is set,
and the symbol appears when the lower-limit value is
set.

Indicates Upper-limit value.

Indicates the preset test time. "
test-time setting has been made.

" is indicated when no

OFF

5 Test-voltage type

Indicates the test type (AC 50 Hz, AC 60 Hz or DC.)

Danger lamp

Indicates that a voltage is being output. This lamp remains lit as long as a
voltage is being applied to the output terminal. It does not light up in the
READY state.

External I/O

――――――――――

The
The

READY

――――――――――

READY

signal is ON when

READY

signal is turned OFF when

is lit on the fluorescent indicator.

READY

is not lit.

Analog voltmeter

Indicates the voltage value being output. In the READY state, the value
remains at 0 kV.

Key Operations

/

＋

SHIFT

SHIFT＋
SHIFT＋STOP

Displays the SETTING state. (See Section 3.3)

Displays the set data Save screen. (See Section 8.1)

Displays the set data Load screen. (See Section 8.2)

Displays the Optional functions setting screen.
(See Chapter 7)

START

LOCK

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Test Start (See Section 3.4)

Key-lock function (See Section 3.2.1)

_____________________________________________________________________________________________

23

3.2.1 Key-lock Function

1

NOTE

It inactivates all keys except the
The

KEYLOCK

Use this function when you do not want to change the test mode or test
settings.

To switch to the KEY-LOCK state, press the
is lit.
To cancel the key-lock function, press the
while holding down the

Even when the key-lock function is activated, the
REMOTE CONTROL BOX and the start and stop signals on the external I/O
terminal remain active.

lamp is lit while the key-lock function is active.

SHIFT

START

key. The

key,

STOP

LOCK

LOCK

KEYLOCK

START

key, and the range switch.

key. The

key in the Key-LOCK state

lamp is not lit.

and

STOP

KEYLOCK

keys on the

2

3

lamp

4

5

6

7

8

9

10

11

12

13

14

A

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3.2 Displaying the "READY" State

24

g

p

_____________________________________________________________________________________________

3.3 "SETTING" State

To set or change test settings, switch to the SETTING state.

NOTE

In the SETTING state, the
In the withstand-voltage mode READY state and "test setting state," although the
test-volta

evalueisdisplayed, that voltage is not beingoutput.

READY state

SETTING state

READY

1. In the withstand-voltage mode READY state, when you press the

light goes out and tests cannot start.

/ key

/

keys, the flashing cursor appears where the test voltage is indicated to
show that the unit is in the SETTING state. (The
and tests cannot start even if the

START

key is pressed.)

READY

light goes out

NOTE

2. Use the following operation keys to make settings:

key: Move the flashing cursor.

/

key: Change settings.

/

ON/OFF

The flashing cursor moves between the test-voltage value, upper-limit

・

keys: Activate and deactivate values.

value, lower-limit value, test time, ramp-up time, ramp-down time and the
test-voltage type.
If the value indicated by the flashing cursor is not needed in the test, turn

・

it OFF using the

ON/OFF

keys. The upper-limit value, the test-voltage

value and the test-voltage type however, cannot be turned OFF.

3. To finalize the test settings, press the

STOP

key. The settings are

confirmed and the unit returns to the READY state.

Note that the unit does not start test if the lower-limit value is greater than the

・

upper-limit value. In this case, correct the settings and press the
confirm them.

Note that the unit does not start test if the test-voltage value is greater than the

・

ut-voltage restrictingvalue. See Section 7.9.

out

STOP

key to

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25

3.3.1 Setting the Test Voltage Value

Set a test-voltage value. The test will not start if the load current value is

large and the output voltage does not reach ±5% of the set test voltage.

(
approximately 5 seconds after completion of the ramp-up time, the unit will
change to the FAIL state and the test will be terminated. Also, if the output

voltage deviates from test voltage and does not return to ±1 dgt. of the set

value within 5 seconds, the test is terminated.

flashes.) If the output voltage fails to reach the test voltage within

TEST

Test-voltage value: 1.00 kV

NOTE

1. If no flashing cursor is displayed in the withstand-voltage mode READY

state, press either the / key to display the cursor in the test-voltage
value position.

2. Change the test-voltage value using the

0.01 kV increments. To change the value by 0.10 kV, press

keys. The value changes in

/

SHIFT

+

/

keys.
Settings may be made along a scale ranging from 0.20 to 5.00 kV.

3. To finalize the test settings, press the

STOP

key. The settings are

confirmed and the unit returns to the READY state.

Optional Function

The output voltage can be restricted to prevent accidents caused by improper
settings. (When the default is set to 5.00 kV.) (See Section 7.9)

Note that the unit does not start test if the test-voltage value is greater than the
output-voltage restricting value. See Section 7.9.

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26

_____________________________________________________________________________________________

3.3.2 Setting the Upper (Lower) Limit Value

Upper-limit value

Upper (Lower) Limit Value: 20 mA

1. If no flashing cursor is displayed in the withstand-voltage mode READY
state, press either the / key to display the cursor in the upper (lower)­limit value position.

2. Set the upper (lower)-limit value using the
The upper (lower)-limit value will change by 0.1 mA (by 1 mA at 10 mA
to 100 mA). While holding down the

SHIFT

(by10mAat10mAto100mA).
The following is the setting range:
The upper-limit value can be set between 0.1 and 100 mA. The lower­limit value can be set between 0.1 and 10 mA. (DC withstand-voltage)
The lower-limit value can be set between 0.1 and 99 mA. The lower-limit
value can be set between 0.1 and 9.9 mA. (DC withstand-voltage)
If no lower-limit value is required, turn off the
value can not be turn off.

3. To finalize the test settings, press the

STOP

confirmed and the unit returns to the READY state.

keys.

/

key, press the

ON/OFF

key. Upper-limit

/

keys.

key. The settings are

NOTE

Lower-limit value

Lower-limit value: 1.0 mA

Lower-limit value

Lower-limit value: OFF

The setting resolution of the upper (lower)-limit value is 0.1 mA at 0.1 mA to 9.9
mA, and 1 mA at 10 mA to 100 mA.
The current measurement resolution during a test depends on the set upper-limit
value: 0.01 mA at 0.10 mA to 10.00 mA and 0.1 mA at 10.1 mA to 100.0 mA.
If the set lower-limit value is greater than the upper-limit value, the test cannot be
started, even if the
lower-limit value.
When the AC withstand-voltage mode is changed to the DC withstand-voltage
mode, if the set upper-limit value is 10 mA or greater and the set lower-limit
value is 9.9 mA or greater, the values for DC withstand-voltage testing will
automatically be changed to 10 mA for the upper-limit, and 9.9 mA for the
lower-limit.

START

key is pressed. In such a case, correct the upper- or

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,

27

3.3.3 Setting the Test Time

Test Time: 60.0 s

Test Time: OFF

NOTE

1. If no flashing cursor is displayed in the withstand-voltage mode READY

state, press either the / key to display the cursor in the test time
position.

2. Set the test time using the

/

keys.
With time set the time changes in 0.1 s increments
(1 s increments when the set time scale is 100 s to 999 s).
With time set at 0.3 s to 99.9 s, press

SHIFT

+

keys. The time

/

changes in 1 s increments
(10 s increments when the set time scale is 100 s to 999 s).
Settings may be made along a scale ranging from 0.3 s to 999 s.
If no testing time is required, turn off the

3. To finalize the test settings, press the

STOP

ON/OFF

key. The settings are

key.

confirmed and the unit returns to the READY state.

The setting resolution of the test time is 0.1 s between 0.3 and 99.9 s, and
becomes 1 s between 100 and 999 s.
If a test time has been set, the reduction timer will operate during the test.
If the test time is set to OFF, the time elapsed during the test is displayed. When
this time exceeds 999 s

"---" will appear,but the test will continue.

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28

_____________________________________________________________________________________________

3.3.4 Setting of the Ramp Timer

In this unit, the time to increase the voltage until it reaches the set test
voltage (ramp-up time) and the time to decrease the voltage upon completion
of the test time (ramp-down time) can be set.
up time and the ramp-down time.

Ramp-up time: 10.0 s

1. If no flashing cursor is displayed in the withstand-voltage mode READY

state, press either the / key to display the cursor in the test time
position.

flashes during the ramp-

TEST

NOTE

2. When the key is pressed, the

UP/DELAY

lamp will light up, enabling the

ramp-up time to be set.

3. Set the test time using the

/

keys.
With time set the time changes in 0.1 s increments.
With time set at 0.1 s to 99.9 s, press
If no testing time is required, turn off the

4. When the key is pressed, the

DOWN

SHIFT

+

ON/OFF

/

keys.

key.

lamp will light up, enabling the

ramp-down time to be set.

5. Set the ramp-down time in the same way as the ramp-up time.

6. To finalize the test settings, press the

STOP

key. The settings are

confirmed and the unit returns to the READY state.

During the ramp-up time, screening using the lower-limit value is invalid.
During the ramp-up time, screening using the upper- or lower-limit value is
invalid.

Optional Function

For the DC withstand-voltage test, you can select whether you want to
perform screening during the ramp-up time. (See Section 7.12)

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29

3.3.5 Setting the Type of Test Voltage

In the withstand-voltage mode, the following types of test voltages can be
selected:

AC 50 Hz

AC 60 Hz

DC

Test-voltage type: AC 50 Hz

For AC withstand-voltage tests. The frequency of the test
voltage is 50 Hz.

For AC withstand-voltage tests. The frequency of the test
voltage is 60 Hz.

For DC withstand-voltage tests.

1. If no flashing cursor is displayed in the withstand-voltage mode READY

state, press either the / key to display the cursor in the AC or DC
position.

2. Change the test-voltage type using the

keys. Select from AC 50 Hz,

/

AC 60 Hz or DC.

NOTE

3. To finalize the test settings, press the

The ripple voltage caused by the output of the DC withstand-voltage is not more
than 6% of the set test-voltage value.

STOP

key.

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3.3 "SETTING" State

30

_____________________________________________________________________________________________

3.3.6 Examples of Settings

This section describes the procedure for making withstand-voltage test
settings under the following conditions.

Test-voltage value: 2.00 kV
Upper-limit value: 20 mA
Lower-limit value: OFF
Test time: 60.0 s
Ramp-up time: 10 s
Ramp-down time: OFF
Test-voltage type: AC 60 Hz

The 3153 is in the READY state in withstand-voltage mode.

Values currently set

Test-voltage value 1.50 kV Test-voltage value 2.00 kV

Upper-limit value 100 mA Upper-limit value 20 mA

Lower-limit value 40 mA Lower-limit value OFF

Test time 120 s Test time 60.0 s

Ramp-up time 30 s Ramp-up time 10 s

Ramp-down time 20 s Ramp-down time OFF

Test voltage type AC 50 Hz Test-voltage type AC 60 Hz

Values to be set

(1) Changing to the SETTING state

Press the / keys to switch to the SETTING state. The

READY

light will go
out, and the flashing cursor will be displayed at the position where the test­voltage value is indicated.

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(2) Setting the test-voltage value

In this example, the value is

1.50 kV

Using the / keys, set the comparative voltage value to

.

2.00 kV

.

To change the value by
To change the value by

0.01 kV

0.10 kV

,press / keys.
,press

SHIFT

+ / keys.

(3) Setting an upper-limit value

Press the key to move the flashing cursor to the upper-limit value.

In this example, switch from

100 mAto20 mA

To change the upper-limit value by
To change the upper-limit value by

1mA
10 mA

using the / keys.

,press / keys.

,press

SHIFT

+ / keys.

(4) Setting a lower-limit value

Using the key, move the flashing cursor to the lower-limit value.

The lower-limit value is set at
change to

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, press the

OFF

40 mA

ON/OFF

. Turn it OFF, as it is not needed. To

key.

3.3 "SETTING" State

32

_____________________________________________________________________________________________

(5) Setting the test time

Using the key, move the flashing cursor to the test time.

In this example, change the test time from

120 sto60.0 s

(6) Setting the ramp-up time

Using the key, move the flashing cursor to the ramp-up time.

（

UP/DELAY

In this example, change the test time from

lamp is lit.）

30 sto10 s

.

.

(7) Setting the ramp-down time

Using the key, move the flashing cursor to the ramp-down time.

（

DOWN

The ramp-down time is set at
change to

lamp is lit.）

, press the

OFF

20 s

ON/OFF

. Turn it OFF, as it is not needed. To

key.

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(8) Setting a test-voltage type

Press the key to move the flashing cursor to the AC or DC.
In this example, change the output voltage range from

AC 50 HztoAC 60 Hz

using / keys.
Pressing the / keys changes the display as follows:

AC 50 Hz→AC 60 Hz→DC

.

(9) Changing to the READY state

To return to the READY state, press the
test settings. In the READY state,

READY

STOP

key, which will finalize the

lights up.

The new parameters following setting are shown below:

Test-voltage value: 2.00 kV
Upper-limit value: 20 mA
Lower-limit value: OFF
Test time: 60.0 s
Ramp-up time: 10 s
Ramp-down time: OFF
Test-voltage type: AC 60 Hz

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34

R

_____________________________________________________________________________________________

3.4 Starting a Test

The flowchart below explains how a test is carried out.

Setting the test parameters

「READY 状態」での設定

READY state

Starting a Test

「READY 状態」での設定

Press the
will start.

While the ramp timer is set,

・

If the output voltage doesn't reach the set test voltage value±5%, the test time timer will

・

START

TEST

key when

and the

See Section 3.4.1

DANGER

"SETTING" State

Key-lock Function

Optional Function

READY

is lit. The unit will change to the TEST status and a test

lamp are lit in the TEST state.

flashes.

TEST

See Section 3.3

See Section 3.2.1

See Chapter 7

not start (after the ramp-up time has elapsed when the ramp-up time has been set).

Determination

「READY 状態」での設定

PASS/FAIL

screening is conducted based on whether a measured-current value exceeds the

See Section 3.5

upper- or lower-limit value.
If the output voltage fails to reach±5% of the test voltage within approximately 5 seconds
after the

START

key is pressed (or after the ramp-up time has elapsed, if the ramp-up time

has been set), the unit returns a FAIL result.

For screening in the ramp timer, see 3.3.4 and 7.12.

・

3.4.1 Executing a Test

To avoid electric shock, observe the following precautions to avoid

DANGE

CAUTION

NOTE

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3.4 Starting a Test

electric shock.
Make sure that no high voltage is being applied to the output, confirm
the following items, and output voltage.
(1) The analog voltmeter reads 0 kV.
(2) The
(3) The

DANGER lamp is OFF.

READY

lamp is lit (it is off in the Double Action mode).

If a capacity load is applied to the tested object, the output voltage may
exceed the preset voltage, thereby damaging the equipment.
Continuous output of a high voltage may heat the bottom of the unit. Take
special care when handling the unit (e.g. transporting the unit).

Priority for control of the

START

key is in the following order: the

START

key on the
REMOTE CONTROL BOX, the external I/O, and the front panel of the unit.
Connecting the switch signal line plug on the REMOTE CONTROL BOX disables the

START

keyon the frontpanel of the unit and the start signal for the external I/O.

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)

35

NOTE

1. Press the

START

The unit will change to the TEST status and a test will start.

DANGER

lamp are lit in the TEST state.

2. In the following cases, tests are terminated, and

key when

READY

is lit.

TEST

UPPER,LOWER

and the

,and
light up:
The output voltage fails to reach±5% of the set test voltage.

・

During the test, the output voltage deviates from the test voltage, and does

・

not return to±1 dgt of the set value within 5 seconds.

3. To terminate the test, press the

STOP

key. The unit will immediately stop
outputting a voltage and switch to the READY state. In such a case, no
screening is conducted.

Until the output voltage reaches the set test voltage, the
flash. When the output voltage reaches the set test voltage, the
lit. If the ramp-up time is set, the

lamp continues flashing until the output

TEST

voltage reaches the set test voltage. During the ramp-up time, the lower-limit
value cannot be set.
The

UP/DELAY

The

DOWN

lamp lights during ramp-up.

lamp lights during ramp-down. (However, it does not light during
time testing when insulation-resistance test termination mode is set to 0 [initial
setting].)
In addition to using the

STOP

key on the remote-control box or by using a STOP signal via external

key on the unit, a stop can be forced using the

STOP

input/output.
Conditions under which testing cannot start:
When using settings similar to the following, testing cannot start even when the

START

keyispressed.(Flashingitems varybysetting.

lamp continues to

TEST

TEST

lamp remains

FAIL

Flashing Setting

Testing upper­/lower-limit
values

Measured
voltage value

Testing lower-limit value ≧ testing upper-limit value

Output voltage restricting value (optional function) <
testing voltage value (See Section 7.9)

Optional Functions

To ensure safety, an upper-limit for the test voltage can be set. (When the

default is set to 5.00 kV.) (See Section 7.9)

The FAIL Hold function can be used to hold the effective value at the time

of termination of the test using FAIL screening. (See Section 7.2)

The Hold function can be used to hold the value that was effective at the

time of forced termination of the test. (See Section 7.3)

For the DC withstand-voltage test, you can select whether you want to

perform screening during the ramp-up time. (See Section 7.12)

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36

_____________________________________________________________________________________________

3.4.2 Screening in "TEST" State

1 2 3

1 Measured

voltage value

2 Upper-limit value

icon and Lower­limit value icon

3 Measured

current value

4 Test time

elapsed

4

5

Indicates the voltage value being output.

The symbol appears when the upper-limit value is set,
and the symbol appears when the lower-limit value is
set.

Represent the value of a current flowing between the HIGH
and LOW terminals.

When the testing time is set, countdown starts from the

・

time set, and is displayed. When the testing time is set to
OFF, the time elapsed after the start of the test is
displayed.

If the elapsed test time exceeds 999 s, "---" is displayed,

・

but the voltage continues to be output.

6

5 Test-voltage type

6 TEST

Indicates the test type (AC 50 Hz, AC 60 Hz or DC.)

TEST flickers for up to five seconds at the start of a test
and when the output voltage exceeds the comparative­voltage range.

Danger lamp

Indicates that a voltage is being output. The lamp stays on during the test
(including ramp-up time and ramp-down time). In the withstand-voltage
mode, this lamp remains lit even after completion of the test, if a voltage
higher than the safety voltage (approximately AC 0.03 kV or approximately
DC 0.06 kV) has flowed between output terminals.

Analog voltmeter

Indicates the voltage value being output.

External I/O

―――――――

The

TEST

up. The

signal is turned ON when

――――――――――

H.V.ON

signal is turned on when the

on the fluorescent indicator lights

TEST

DANGER

lamp lights up. The
two signals are turned OFF at the same time.
Upon startup of the test, although
reaches the set test voltage or during the ramp-up time, the

flashes until the output voltage

TEST

――――――――

TEST

signal is

ON.

Optional Functions

Setting can be performed so that the

――――――――

TEST

signal will be OFF while

TEST

flashes. See Section 7.15.

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p

p

37

3.5 "PASS" or "FAIL" Determination

3.5.1 "PASS" State

Even when a test has been terminated, there may still be voltage in the

ARNING

output-voltage terminal. Before touching the output-voltage terminal,
H.V. TEST LEAD, or tested object, make sure that no high voltage is
being applied to the output, confirm the following items.
(1) The analog voltmeter reads 0 kV.
(2) The
(3) The

DANGER lamp is OFF.

READY

lamp is lit (it is off in the Double Action mode).

If the test time has not been set, PASS screening is not performed. To the
test, press the

STOP

key, which will forcibly terminate the test.

Optional Functions

The PASS state is held using the PASS Hold function. (See Section 7.1)

Flow of PASS determination

Output voltage

1. Press the

2.

TEST

during the ramp-up time. When the output voltage reaches the test voltage,
remains lit, and the reduction timer starts counting down the test time.

3. A voltage is output until the test time elapses. (If the measured-current

value deviates from the upper- and lower-limit values, the unit switches to
the FAIL state.

4. If the ramp-down time is not set, upon completion of the test time, the unit will

change to the PASS state. If the ramp-down time is set, the reduction timer starts
counting down the ramp-down time. Upon expiration of the time, the measurement
result upon completion of the test is displayed, and the unit changes to the PASS
state. In the PASS state,

Ramp-uptime

Flashing

START

key to start a test.

Testingtime when it set u

DANGER

Lam

Ramp-down time

Flashing

flashes until the output voltage reaches the set test voltage.

is lit.

PASS

TEST

0.03 kV AC or

0.06 kV DC

Time

also flashes

TEST

NOTE

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_____________________________________________________________________________________________

3.5.2 Screening in "PASS" State

1 2 3

1 Measured

voltage value

2 Upper-limit value

icon and Lower­limit value icon

3 Measured

current value

4 Test time

elapsed

5 Test-voltage type

6 PASS

4

5

Indicates the voltage in the PASS state.

The symbol appears when the upper-limit value is set,
and the symbol appears when the lower-limit value is
set.

Indicates the value of the current flowing between the HIGH
and LOW terminals in the PASS state

Displays the time in which the test has been completed. In
PASS state, "

Indicates the test type (AC 50 Hz, AC 60 Hz or DC.)

Indicates that the unit is in the PASS state.

"isdisplayed.

0.0s

6

Danger lamp

Indicates that a voltage is being output. The lamp stays on during the test
(including ramp-up time and ramp-down time). In the withstand-voltage
mode, this lamp remains lit even after completion of the test, if a voltage
higher than the safety voltage (approximately AC 0.03 kV or approximately
DC 0.06 kV) has flowed between output terminals.

Analog voltmeter

Indicates the voltage being output in withstand-voltage test. The analog
voltmeter is not held even if the PASS Hold function is disabled.
Indicates the voltage value being output.

External I/O

――――――

The
As long as the PASS state is held, the
signal is turned OFF when the

signal is turned ON when

PASS

on the fluorescent indicator is lit.

PASS

―――――――

PASS

light on the fluorescent indicator goes

PASS

signal remains ON. The

―――――――

PASS

out.
If voltage remains in the output-voltage terminal following termination of a
test, the

――――――――――

H.V.ON

――――――――――

H.V.ON

signal remains ON. When the

signal is immediately turned OFF.

DANGER

lamp goes out,

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39

3.5.3 "FAIL" State

Even when a test has been terminated, there may still be voltage in the

ARNING

output-voltage terminal. Before touching the output-voltage terminal,
H.V. TEST LEAD, or tested object, make sure that no high voltage is
being applied to the output, confirm the following items.
(1) The analog voltmeter reads 0 kV.
(2) The
(3) The

DANGER lamp is OFF.

READY

lamp is lit (it is off in the Double Action mode).

If the measured voltage deviates from the upper or lower value during the
test, the unit switches to the FAIL state and immediately stops outputting a
voltage.
The FAIL state can be divided into UPPER FAIL and LOWER FAIL states.

The measured current has exceeded the upper-limit

UPPER FAIL

value.

The measured current has dropped below the lower-

LOWER FAIL

limit value.

(When the lower-limit value is set to OFF, LOWER FAIL is ineffective.)

If the output voltage fails to reach±5% of the set test voltage, or if it
deviates from the set voltage, the unit changes to the FAIL state.

LOWER

,and

FAIL

light up.

UPPER

Optional Functions

The FAIL state is held using the FAIL Hold function. (See Section 7.2)

,

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40

p

g

p

g

_____________________________________________________________________________________________

Flow of FAIL determination

Output voltage

1. Press the

2.

TEST

flashes during the ramp-up time. When the output voltage reaches the test
voltage,
test time.

Ramp-uptime

START

Flashin

key to start a test.

Testingtime when it set u

DANGER

Lam

0.03 kV AC or

0.06 kV DC

*

UPPER/LOWER

（

: TEST Flashing

*

flashes until the output voltage reaches the set test voltage.

remains lit, and the reduction timer starts counting down the

TEST

Time

TEST

）

also

NOTE

3. A voltage continues to be output until the test time elapses. If the

measured current deviates from the upper- or lower-level value during this
period, the unit switches to the FAIL state.

4. Once a switch is made to the FAIL state,

UPPERorLOWER

. The unit stops outputting a voltage and the reduction

lights up, together with

FAIL

timer stops.

If the current generated is several times as large as the upper-limit value, a circuit
promptly cuts off the high voltage, thereby switching the unit to

UPPER FAIL

this point, an incorrect value for the measured current is displayed.
* For screenin

in the ramptimer,see 3.3.4 and 7.12.

.At

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3.5.4 Screening in "FAIL" State

1 2 3

1 Measured voltage

value

2 Upper-limit value

icon and Lower­limit value icon

3 Measured current

value

4 Test time elapsed

5 Test-voltage type

6 FAIL

4

5

Indicates the voltage in the FAIL state.

The symbol appears when the upper-limit value is set,
and the symbol appears when the lower-limit value is set.

Indicates the current flowing between the HIGH and LOW
terminals in the FAIL state.

Indicates the time when the unit switched to the FAIL state.
If the test time has been set, the remaining test time is
displayed. If the test time is set at OFF, the period of time
during which a voltage is output is displayed.

Indicates the test type (AC 50 Hz, AC 60 Hz or DC.)

Indicates that the unit is in the FAIL state.
with UPPER to indicate
indicate

LOWER FAIL

UPPER FAIL

. If the output voltage deviates from the
comparative-voltage range and switches the unit to the FAIL
state,

UPPER,LOWER

,and

FAIL

, and with LOWER to

light up.

FAIL

6

lights up

Danger lamp

Indicates that a voltage is being output. The lamp stays on during the test
(including ramp-up time and ramp-down time). In the withstand-voltage
mode, this lamp remains lit even after completion of the test, if a voltage
higher than the safety voltage (approximately AC 0.03 kV or approximately
DC 0.06 kV) has flowed between output terminals.

Analog voltmeter

Indicates the voltage being output in withstand-voltage test. The analog
voltmeter is not held even if the FAIL Hold function is disabled.
Indicates the voltage value being output.

External I/O

――――――――――

The

W-FAIL

lights on the fluorescent indicator. (If the output voltage fails to reach

FAIL

signal and either the

5% of the set test voltage, or if it deviates from the set test voltage,

LOWER

,and
ON.) Both the
remain ON as long as the FAIL state is held. The

――――――――――

L-FAIL

signals are turned OFF when the
goes out. If voltage remains in the output-voltage terminal following the
termination of a test, the
goes out, the

light up, and the

FAIL

――――――――――

W-FAIL

――――――――――

H.V.ON

and

――――――――――

H.V.ON

signal is immediately turned OFF.

――――――――――

U-FAIL

――――――――――

W-FAIL

――――――――――

U-FAIL

signals, as well as the

――――――――――

or

L-FAIL

――――――――――

,

U-FAIL

light on the fluorescent indicator

FAIL

signal remains ON. When the

signal come on when

――――――――――

,and

L-FAIL

――――――――――

――――――――――

W-FAIL

L-FAIL

――――――――――

,

U-FAIL

DANGER

±

,

UPPER

signals turn

signal

and

lamp

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42

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3.6 Automatic Discharge Function

When a test object that contains a capacity component is subjected to a
withstand-voltage test, the object might remain electrically charged, thereby
causing an electric shock. This unit is equipped with a function to discharge
residual electricity upon termination of the withstand-voltage test (discharge
resistance: 726 kΩ).
The unit automatically switches to the internal discharge circuit to discharge
the test object (the

DANGER

When the voltage between the output terminals falls below the safety voltage
(approximately AC 0.03 kV or DC 0.06 kV), the
The larger the capacity component of the test object, the more time is
required to discharge the test object.

lamp is lit).

DANGER

lamp goes out.

NOTE

The unit does not return to the READY state until the
upon completion of the test. Until the unit returns to the READY state, no key
operation is accepted.
With an optional setting, the unit can change to the READY state, regardless of
the

DANGER

START Protection Function).
In such a case, the voltage output terminals may contain residual electricity even
when the unit is in the READY state.

lamp indication, upon completion of the test (see Section 7.14

DANGER

lamp goes out

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y,

43

Chapter 4

1

2

Insulation Resistance Mode

Testing Method

This chapter describes how to set insulation-resistance mode test conditions
and the proper testing procedure.
Read chapter 2, and make the necessary preparations for testing.

Press theIkey to enter insulation-resistance mode.
(The I lamp above the key to the left lights.)

Flashing

3

4

5

6

7

8

NOTE

Choose the insulation resistance test termination mode (see "7.11 Insulation

・

Resistance Test Termination Settings") and set an adequate test time and delay
time.
With some tested objects, it may take some time until the actual output voltage

・

reaches the set test voltage.
Using both defective and non-defective samples of the tested object, check to see
if measurement and screening are conducted correctly.
Turn OFF the timer and find an adequate timer setting with which measurement
is performed correctly.
Turn ON the timer. Set that timer setting as the test time and check to ensure
that measurement and screening are conducted correctly. Also, set the delay time.
Approximately 2.0 seconds is required to calculate moving averages when it has

・

been determined that capacity is available. (Determination of capacity requires

0.6 seconds.)
When capacitance is present, the time constant based on the capacitance

・

and resistance values may delay the measurement results.
Approximately 1.6 seconds is required for the range to stabilize when Auto Range

・

is selected (when the resistance values of the device tested do not vary).
When resistance values var

・

more time is required for testing.

9

10

11

12

13

14

A

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4.1 Insulation Resistance Mode Display

READY

｢READY 状態｣

state

・The unit is ready for starting a test. The
・Press the

START

key while in the READY state.

READY

・Press the / key while in SETTING state.
・Press

SHIFT+STOP

keys to display the Optional Function Setting screen.

・Key-lock Function can be used. (See Section 4.2.1)

/ key

Setting optional functions

｢READY 状態｣

SHIFT + STOP key

Setting the optional functions allows testing under various conditions.
(See Chapter 7)

STOP key

lamp is turned on.

SETTING

｢READY 状態｣

state

・Test parameters can be set.
・To terminate the test settings and return to the READY state, press the

finalize the settings.

Setting items

Test-voltage value

Lower (Upper) -limit value

Test time

Delay time

See Section 4.3.1

See Section 4.3.2

See Section 4.3.3

See Section 4.3.4

STOP

key, which will

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45

START key

TEST

｢READY 状態｣

state

・When the unit is in the TEST state, the

progress.

・Compares the upper- and lower-limit measured resistance values. If the measured resistance

value deviates from either of these values once the test time has elapsed, the unit shifts to the
FAIL state. If the value does not deviate, the unit shifts to the PASS state.

・Press the

Key operation in the TEST status

PASS

｢READY 状態｣

・
・The

・The PASS state can be maintained if the PASS Hold function is disabled in the optional

STOP

state

indicates that the measured object passed the test set in the READY state.

PASS

PASS

before switching to the READY state.

settings. (See Section 7.1)

See Section 4.4.2

lamp is lit. This indicates that a test is in

TEST

key to forcibly terminate the test.

Forced ending

See Section 4.5.1

lamp is turned on. The PASS state screen is displayed for about 0.3 second

Press the

STOP

key.

1

2

3

4

5

6

7

8

state

FAIL

｢READY 状態｣

・

READY

・The

upper-limit value, or by

・The FAIL state can be maintained. To return to the READY state, press the

which will cancel the FAIL Hold function.

・FAIL Hold function can be disabled in the optional settings. The FAIL-state screen is

displayed for 0.3 seconds, and the unit then switches to the READY state. (See Section

7.2)

indicates that the tested object failed to pass the test set in the READY state.

lamp will light up, accompanied by

FAIL

See Section 4.5.3

LOWER

if the measured value is below the lower-limit value.

UPPER

if the measured value exceeds the

STOP

key,

9

10

11

12

13

14

A

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4.1 Insulation Resistance Mode Display

46

_____________________________________________________________________________________________

4.2 Displaying the "READY" State

In the READY state, the unit is always ready to start a test. The

READY

lamp remains lit to indicate the READY state.
Saving and loading for setting data and the setting of optional functions are
made following the READY state.

1 2 3

1 Test-voltage

value

2 Upper-limit value

icon and Lower­limit value icon

3 Lower-limit value

4 Test time

Indicates the voltage value being output.

The symbol appears when the upper-limit value is set,
and the symbol appears when the lower-limit value is
set.

Indicates Lower-limit value.

Indicates the preset test time. "

" is indicated when no

OFF

test-time setting has been made.

4

Danger lamp

Indicates that a voltage is being output. This lamp remains lit as long as a
voltage is being applied to the output terminal. It does not light up in the
READY state.

Analog voltmeter

Indicates the voltage value being output. In the READY state, the value
remains at 0 kV.

External I/O

――――――――――

The
The

READY

――――――――――

READY

signal is ON when

READY

signal is turned OFF when

is lit on the fluorescent indicator.

READY

is not lit.

Key Operations

/

SHIFT＋
SHIFT＋
SHIFT＋STOP

Displays the SETTING state. (See Section 4.3)

Displays the set data Save screen. (See Section 8.1)

Displays the set data Load screen. (See Section 8.2)

Displays the Optional functions setting screen.
(See Chapter 7)

START

LOCK

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Test Start (See Section 4.4)

Key-lock function (See Section 4.2.1)

_____________________________________________________________________________________________

47

4.2.1 Key-lock Function

1

NOTE

It inactivates all keys except the
The

KEYLOCK

Use this function when you do not want to change the test mode or test
settings.

To switch to the KEY-LOCK state, press the
is lit.
To cancel the key-lock function, press the
while holding down the

Even when the key-lock function is activated, the
REMOTE CONTROL BOX and the start and stop signals on the external I/O
terminal remain active.

lamp is lit while the key-lock function is active.

SHIFT

START

key. The

key,

STOP

LOCK

LOCK

KEYLOCK

START

key, and the range switch.

key. The

key in the KEY-LOCK state

lamp is not lit.

and

STOP

KEYLOCK

keys on the

2

3

lamp

4

5

6

7

8

9

10

11

12

13

14

A

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4.2 Displaying the "READY" State

48

g

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4.3 "SETTING" State

To set or change test settings, switch to the SETTING state.

NOTE

In the SETTING state, the
In the insulation-resistance mode READY state and "test setting state," although
the test-volta

evalueisdisplayed,that voltage is not beingoutput.

READY

light goes out and tests cannot start.

READY state

SETTING state

/ key

1. In the insulation-resistance mode READY state, when you press the

keys, the flashing cursor appears where the test-voltage is indicated to
show that the unit is in the SETTING state. (The
tests cannot start even if the

START

key is pressed.)

READY

light goes out and

2. Use the following operation keys to make settings:

key: Move the flashing cursor.

/

key: Change settings.

/

ON/OFF

The flashing cursor moves between the test-voltage value, lower-limit

・

keys: Activate and deactivate values.

value, upper-limit value, test time and the delay time.
If the value indicated by the flashing cursor is not needed in the test, turn

・

it OFF using the

ON/OFF

keys. The lower-limit value and the test-voltage

value, however, cannot be turned OFF.

/

3. To finalize the test settings, press the

STOP

key. The settings are

confirmed and the unit returns to the READY state.

NOTE

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Note that the unit does not return to the READY state if the lower-limit value is
greater than the upper-limit value. In this case, correct the settings and press the

STOP

keyto confirm them.

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p

49

4.3.1 Setting the Test Voltage Value

The test-voltage value can be set in the range of 50 V to 1,200 V in 1-V
steps.

Test-voltage value: 1000 V

1. If no flashing cursor is displayed in the insulation-resistance mode

READY state, press either the / key to display the cursor in the test­voltage value position.

NOTE

2. Change the test-voltage value using the

To change the value by 10 V, press

SHIFT

/

+

keys.

/

keys.

Settings may be made along a scale ranging from 50 to 1200 V.

3. To finalize the test settings, press the

STOP

key. The settings are

confirmed and the unit returns to the READY state.

The test-voltage value is connected to the lower-limit value. The test voltage
cannot be set at a value greater than the lower-limit value x 1,000. (For example,

if the lower-limit value is set at 0.5 MΩ, the test voltage cannot be set at a value

greater than 0.5 x 1,000 = 500 (V).)
If the lower-limit for the test voltage is set in accordance with various safety
standards, set the voltage with errors generated by this unit taken into
consideration.
If the test object contains a capacity load, the output voltage may be higher than
the set voltage. (In the case of a capacity load of 5 μF or less, the output voltage
should not be greater than 1.2 times the set voltage.)
Note that the unit does not start test if the test-voltage value is greater than the
out

ut-voltage restrictingvalue. See Section 7.9.

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50

,

_____________________________________________________________________________________________

4.3.2 Setting the Lower (Upper) Limit Value

Lower-limit value

Lower Limit Value: 10 MΩ

1. If no flashing cursor is displayed in the insulation-resistance mode

READY state, press either the / key to display the cursor in the lower
(upper)-limit value position.

2. Set the lower (upper)-limit value using the

The lower (upper)-limit value increases for each setting resolution function
shown in the list below.
Press the keys,

SHIFT

times more rapidly than when the
If the

SHIFT+/

+

key. The value increases or decreases 10

/

SHIFT

key is not held down.

keys continue to be held down, the value increases or
decreases by multiples of 100.
The lower (upper)-limit value can be set between 0.1 and 9999 MΩ.
If no Upper-limit value is required, turn off the
value can not be turn off.

3. To finalize the test settings, press the

STOP

confirmed and the unit returns to the READY state.

keys.

/

ON/OFF

key. Lower-limit

key. The settings are

NOTE

Upper-limit value

Upper-limit value: 2000 MΩ

Upper-limit value

Upper-limit value: OFF

If the set lower-limit value is greater than the upper-limit value, the test cannot be started,

even if the
The measured resistance and measurement ranges depend on the set lower-limit
and test-voltage values.
Resistance values larger than 9999 MΩ are displayed as "
Therefore, when the resistance measurement range is fixed, UPPER FAIL may
result even if the actual resistance value is lower than the test upper-limit value.If
"

O.F.

Resistance values smaller than 0.1 MΩ are displayed as "
The lower-limit value cannot be set to a value smaller than the test-voltage
value/1,000 (MΩ). For example, if the test voltage is set at 1,000 V, the lower­limit value cannot be set at a value smaller than 1

START

" (overflow) appears on the screen, check out the actual measurement range.

key is pressed. In such a case, correct the upper- or lower-limit value.

" (overflow).

O.F.

" (underflow).

U.F.

000/1,000=1(MΩ).

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51

Upper- or lower-value

Setting range (MΩ) Setting resolution (MΩ)

0.10 to 9.99 0.01

10.0 to 99.9 0.1

100 to 9999 1

Measurement resistance value

Measurement range (MΩ) Measurement resolution (MΩ)

0.100 to 1.049 0.001

1.05 to 10.49 0.01

10.5 to 104.9 0.1

105 to 9999 1

Test voltages (reference values), lower-limit values, and measurement ranges

Test voltage

(V)

50 0.10 to 0.49 0.100 to 1.000

100 0.10 to 0.99 0.100 to 2.00

250 0.25 to 2.48 0.217 to 5.00

500 0.50 to 4.97 0.435 to 10.00

1000 1.00 to 9.95 0.870 to 20.0

Lower-value (MΩ)

0.50 to 4.76 0.430 to 10.00

4.77 to 49.9 4.30 to 100.0

50.0 to 9999 43.0 to 1000

1.00 to 9.52 0.870 to 20.0

9.53 to 99.9 8.70 to 200

100 to 9999 87.0 to 2000

2.49 to 23.8 2.17 to 50.0

23.9 to 249 21.7 to 500

250 to 9999 217 to 5000

4.98 to 49.9 4.35 to 100.0

50.0 to 499 43.5 to 1000

500 to 9999 435 to 9999

9.96 to 99.9 8.70 to 200

100 to 999 87.0 to 2000

1000 to 9999 870 to 9999

Measurement resistance

(MΩ)

When the resistance value exceeds the measurement range, it is displayed as
"

" (overflow).

O.F.

When the set resistance value does not reach the measurement range, values
are displayed on the "

" (underflow).

U.F.

In this case, if the resistance measurement range is not appropriate, the
voltage between the voltage output terminals may become lower than the
measurement. Choose the Auto Range.

*: Refer to the notes.

Optional Functions

You can make the low measurement range a fixed range or an automatic
range, depending on the optional function settings. (See Section 7.10)

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52

(

_____________________________________________________________________________________________

4.3.3 Setting the Test Time

Test Time: 10.0 s

Test Time: OFF

1. If no flashing cursor is displayed in the insulation-resistance mode

READY state, press either the / key to display the cursor in the test
time position.

NOTE

2. Set the test time using the

/

keys.
With time set the time changes in 0.1 s increments (1 s increments when
the set time scale is 100 s to 999 s).
With time set at 0.3 s to 99.9 s, press

SHIFT

+

keys. The time

/

changes in 1.0 s increments (10 s increments when the set time scale is
100 s to 999 s).
Settings may be made along a scale ranging from 0.3 s to 999 s.
If no testing time is required, turn off the

3. To finalize the test settings, press the

ON/OFF

STOP

key.

key. The settings are

confirmed and the unit returns to the READY state.

Screening is not conducted for insulation-resistance tests when the test time is set
to OFF.
If the test time is set to OFF, the time elapsed during the test is displayed. When
this time exceeds 999 s, "---" will appear, but the test will continue.
The setting resolution of the test time is 0.1 s between 0.3 and 99.9 s, and
becomes 1 s between 100 and 999 s.
If a test time has been set, the reduction timer will operate during the test.
When Auto Range is set (see Section 7.10), it takes approximately 1.5 s for the
range to stabilize after the test starts. When the set test time is shorter than this,
the test results in a UPPER LOWER FAIL (see Chapter 4).
If the test time is short, the output voltage may not reach the preset test voltage,
depending on the test object.
Set a sufficient test time and delay time, in accordance with the insulation­resistance termination mode

see Section 7.11).

Optional Functions

When the test time is set, the test can be terminated before the set test time
for PASS or FAIL determination has elapsed depending on optional function
settings. (See Section 7.11)

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y

,

53

4.3.4 Setting the Delay Time

Time during which screening is not performed from the start of a test (delay
time) can be set. This is effective when a test object contains a capacity
load.

Delay time: 3.0 s

NOTE

Delay time: OFF

1. If no flashing cursor is displayed in the insulation-resistance mode

READY state, press either the / key to display the cursor in the test
time position.

2. When the key is pressed, the

UP/DELAY

lamp lights up to enable the

delay time to be set.

3. Set the test time using the

/

keys.
With time set the time changes in 0.1 s increments.
With time set the time changes in 1 s increments, press

SHIFT

+
Settings may be made along a scale ranging from 0.1 s to 99.9 s.
If no testing time is required, turn off the

4. To finalize the test settings, press the

STOP

ON/OFF

key. The settings are

key.

confirmed and the unit returns to the READY state.

After the delay time is set, if it is turned OFF and turned ON again using the

ON/OFF

When the dela

key, the delay time is reset to the initial value (0.1 s).

time ≧ test time

the unit will not start the test.

/

keys.

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54

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4.3.5 Examples of Settings

This section describes the procedure for making insulation-resistance test
settings under the following conditions.

Test-voltage value: 500 V
Lower-limit value: 100 MΩ
Upper-limit value: OFF
Test time: 5.0 s
Delay time: 0.5 s

The 3153 is in the READY state in insulation-resistance mode.

Values currently set

Test-voltage value 1000 V Test-voltage value 500 V

Lower-limit value 10.0 MΩ Lower-limit value 100 MΩ

Upper-limit value 2000 MΩ Upper-limit value OFF

Test time 20.0 s Test time 5.0 s

Delay time 1.0 s Delay time 0.5 s

Values to be set

(1) Changing to the SETTING state

Press the / keys to switch to the SETTING state. The

READY

light will go
out, and the flashing cursor will be displayed at the position where the test­voltage value is indicated.

(2) Setting the test-voltage value

In this example, the value is

1000 V

Using the / keys, set the comparative voltage value to
To change the value by

10 V

,press

.

SHIFT

+ / keys.

500 V

.

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55

(3) Setting an lower-limit value

Press the key to move the flashing cursor to the lower-limit value.
In this example, switch from

10.0 MΩto100 MΩ

using the / keys.

To change the lower-limit value, press / keys.
Press the keys,

SHIFT

more rapidly than when the

+

key. The value increases or decreases 10 times

/

SHIFT

key is not held down.

(4) Setting a upper-limit value

Using the key, move the flashing cursor to the upper-limit value.

The upper-limit value is set at
change to

, press the

OFF

ON/OFF

2000 MΩ

key.

. Turn it

, as it is not needed. To

OFF

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56

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(5) Setting the test time

Using the key, move the flashing cursor to the test time.

In this example, change the test time from

20.0 sto5.0 s

(6) Setting the delay time

Using the key, move the flashing cursor to the delay time.

）

is lit.

In this example, change the test time from

1.0 sto0.5 s

.

（

DELAY

lamp

.

(7) Changing to the READY state

To return to the READY state, press the

STOP

key, which will finalize the

test settings.

The new parameters following setting are shown below:

Test-voltage value: 500 V
Lower-limit value: 100 MΩ
Upper-limit value: OFF
Test time: 5.0 s
Delay time: 0.5 s

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57

4.4 Starting a Test

The flowchart below explains how a test is carried out.

Setting the test parameters

「READY 状態」での設定

READY state

Starting a Test

「READY 状態」での設定

Press the

will start.

START

TEST

key when

and the

"SETTING" State

Key-lock Function

Optional Function

See Section 4.4.1

READY

DANGER

is lit. The unit will change to the TEST status and a test

lamp are lit in the TEST state.

See Section 4.3

See Section 4.2.1

See Chapter 7

If the output voltage doesn't reach a level between 5% lower and 50% higher than the set test

voltage value, screening will not be performed.

Determination

「READY 状態」での設定

PASS/FAIL

screening is conducted after the set test time based on whether a measured

See Section 4.5

resistance value exceeded the upper- or lower- limit value.
If the test time has elapsed without the output voltage reaching a level between 5% lower and
50% higher than the set test voltage value, FAIL will result.

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4.4 Starting a Test

58

R

_____________________________________________________________________________________________

4.4.1 Executing a Test

To avoid electric shock, make sure that no high voltage is being applied

DANGE

to the output, confirm the following items, and output voltage.
(1) The analog voltmeter reads 0 kV.
(2) The
(3) The

DANGER lamp is OFF.

READY

lamp is lit (it is off in the Double Action mode).

NOTE

NOTE

Priority for control of the

START

key is in the following order: the

START

key on
the REMOTE CONTROL BOX, the external I/O, and the front panel of the unit.
Connecting the switch signal line plug on the REMOTE CONTROL BOX disables
the

START

key on the front panel of the unit and the start signal for the external

I/O.

1. Press the

START

The unit will change to the TEST status and a test will start.
the

DANGER

2. In either of the cases below, the test will be terminated and

LOWER

,or

FAIL

key when

READY

is lit.

lamp are lit in the TEST state.

will light.

TESAT

UPPER

and

,

About 1 second after the test has started, the output voltage is still lower

than 1/2 of the set test voltage.

The test time has elapsed without the output voltage reaching a level

between 5% lower and 50% higher than the set test voltage value.

Output voltage during testing differs from the test voltage value and does

not fall within the range 80% to 150% of the voltage setting.

3. To terminate the test, press the

STOP

key. The unit will immediately stop
outputting a voltage and switch to the READY state. In such a case, no
screening is conducted.

During the delay, the

UP/DELAY

time testing when insulation-resistance test termination mode is set to 0 [initial
setting].)
In addition to using the

STOP

key on the remote-control box or by using a STOP signal via external

STOP

input/output.
Conditions under which testing cannot start:
When using settings similar to the following, testing cannot start even when the

START

key is pressed. (Flashing items vary by setting.)

lamp lights. (However, it does not light during

key on the unit, a stop can be forced using the

Flashing Setting

Resistance value
and test time

Testing upper­/lower-limit
values

Test time Delay time ≧ test time

Measured
voltage value

Auto range is selected, Test time is set to On
(See Section 7.10)

Testing lower-limit value ≧ testing upper-limit value

Output voltage restricting value (optional function) <
testing voltage value (See Section 7.9)

Optional Functions

The Hold function can be used to hold the value that was effective at the
time of forced termination of the test. (See Section 7.3)

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59

4.4.2 Screening in "TEST" State

1 2 3

1 Measured

voltage value

2 Upper-limit value

icon and Lower­limit value icon

3 Measured

resistance value

4 Test time

elapsed

4

5

Indicates the voltage value being output.

The symbol appears when the upper-limit value is set,
and the symbol appears when the lower-limit value is
set.

Represent the value of a resistance flowing between the
HIGH and LOW terminals.

When the testing time is set, countdown starts from the

・

time set, and is displayed. When the testing time is set to
OFF, the time elapsed after the start of the test is
displayed.
If the elapsed test time exceeds 999 s, "---" is displayed,

・

but the voltage continues to be output.

6

5 Test-voltage type

6 TEST

Indicates the test type (DC).

Remains lit during the test.

Danger lamp

Indicates that a voltage is being output. The lamp stays on during the test .
In the insulation-resistance mode, this lamp remains lit even after completion
of the test, if a voltage higher than the safety voltage (approximately DC 60
V) has flowed between output terminals.

Analog voltmeter

Indicates the voltage value being output.

External I/O

―――――――

The

TEST

up. The

signal is turned ON when

――――――――――

H.V.ON

signal is turned on when the

on the fluorescent indicator lights

TEST

DANGER

lam

p ligh

ts up. The
two signals are turned OFF at the same time.
Upon startup of the test, although
reaches the set test voltage, the

――――――――

TEST

Optional Functions

Setting can be performed so that the

flashes until the output voltage

TEST

signal is ON.

――――――――

TEST

signal will be OFF while

TEST

flashes. See Section 7.15.

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60

W

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4.5 "PASS" or "FAIL" Determination

4.5.1 "PASS" State

Even when a test has been terminated, there may still be voltage in the

ARNING

output-voltage terminal. Before touching the output-voltage terminal,
H.V. TEST LEAD, or tested object, make sure that no high voltage is
being applied to the output, confirm the following items.
(1) The analog voltmeter reads 0 kV.
(2) The
(3) The

DANGER lamp is OFF.

READY

lamp is lit (it is off in the Double Action mode).

When the set time has elapsed, if the measured resistance value≧lower -

limit value or

upper-limit value, the unit will change to the PASS state.

≦

As soon as the unit switches to the PASS state, it stops outputting voltage.

If the test time has not been set, PASS screening is not performed. To the

test, press the

STOP

key, which will forcibly terminate the test.

If the output voltage doesn't reach a level between 5% lower and 50%

higher than the set test voltage value, screening will not be performed.

Optional Functions

The PASS state is held using the PASS Hold function. (See Section 7.1)
If the test time is set, the test can be forcibly terminated when the

measured resistance value enters the PASS range before the preset time
has elapsed. This is convenient when testing objects that contains capacity
loads. (See Section 7.11)

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p

(

)

p

61

Flow of PASS determination

Test-voltage

1. Press the

Delay time

Undeterminedperiod

START

START

key to start a test.

Testingtime when it set u

DANGER

Lam

Electric
dischargetime

2. A voltage is output until the test time elapses and the resistance is

measured.

3. When the preset test time has elapsed and the measured resistance value

is within the upper- and lower-limit values, the unit stops outputting a
voltage and switches to the PASS state.

lights up in the PASS state.

PASS

60 V DC

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62

_____________________________________________________________________________________________

4.5.2 Screening in "PASS" State

1 2 3

1 Measured

voltage value

2 Upper-limit value

icon and Lower­limit value icon

3 Measured

resistance value

4 Test time

elapsed

5 Test-voltage type

6 PASS

4

5

Indicates the voltage in the PASS state.

The symbol appears when the upper-limit value is set,
and the symbol appears when the lower-limit value is
set.

Indicates the measured resistance value in the PASS state.

"

"isdisplayed.

0.0s

Indicates the test type (DC).

Indicates that the unit is in the PASS state.

6

Danger lamp

Indicates that a voltage is being output. The lamp stays on during the test.
In the insulation-resistance mode, the lamp will also light if a voltage
exceeding the safety voltage (approximately DC 60 V) remains between the
output terminals after the test has been completed.

Analog voltmeter

Indicates the voltage value being output. Even when values are held using
the "PASS hold function," the value of the analog voltmeter is not held.

External I/O

――――――

The
As long as the PASS state is held, the
signal is turned OFF when the

signal is turned ON when

PASS

on the fluorescent indicator is lit.

PASS

―――――――

PASS

light on the fluorescent indicator goes

PASS

signal remains ON. The

―――――――

PASS

out.
If voltage remains in the output-voltage terminal following termination of a
test, the

――――――――――

H.V.ON

――――――――――

H.V.ON

signal remains ON. When the

signal is immediately turned OFF.

DANGER

lamp goes out,

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W

63

4.5.3 "FAIL" State

Even when a test has been terminated, there may still be voltage in the

ARNING

output-voltage terminal. Before touching the output-voltage terminal,
H.V. TEST LEAD, or tested object, make sure that no high voltage is
being applied to the output, confirm the following items.
(1) The analog voltmeter reads 0 kV.
(2) The
(3) The

DANGER lamp is OFF.

READY

lamp is lit (it is off in the Double Action mode).

When the preset test time has elapsed, the unit switches to the FAIL state
and immediately stops outputting a voltage if the measured resistance value
deviates from the upper or lower-limit value during the test.
The FAIL state can be divided into UPPER FAIL and LOWER FAIL states.
If the output voltage doesn't reach a level between 5% lower and 50% higher
than the set test voltage value, screening will not be performed.

UPPER FAIL

LOWER FAIL

The measured resistance has exceeded the upper­limit value.

The measured resistance has dropped below the
lower-limit value.

If the test time has elapsed without the output voltage reaching a level
between 5% lower and 50% higher than the set test voltage value or if the
voltage deviates largely from the set voltage value, FAIL will result.

LOWERorFAIL

will light.

UPPER

(When the upper-limit value is set to OFF, UPPER FAIL is ineffective.)

If the test time has not been set, PASS screening is not performed. To the
test, press the

STOP

key, which will forcibly terminate the test.

Optional Functions

The FAIL state is held using the FAIL Hold function. (See Section 7.2)
If the test time is set, the test can be forcibly terminated when the

measured resistance value enters the PASS range before the preset time
has elapsed. This is convenient when testing objects that contains capacity
loads. (See Section 7.11)

,

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64

p

）

(

)

p

(

)

_____________________________________________________________________________________________

Flow of FAIL determination

Test voltage

1. Press the

Delay time

Undeterminedperiod

START

START

key to start a test.

Testingtime when it set u

DANGER

Lam

Electric
dischargetime

60 V DC

UPPER/LOWER

2. A voltage continues to be output until the test time elapses and measure

resistance.

3. When the preset test time has elapsed, and the measured resistance value

deviates from the upper- or lower-limit value, the unit stops outputting a
voltage and switches to the FAIL state.
together with

LOWERorUPPER

.

lights up in the FAIL state

FAIL

NOTE

When the optional "Insulation Resistance Measurement Range" function is set to
"

: Auto Range", it takes up to 1.5 s to display the resistance value. When the

1

test finishes before the preset test time, the test results in a

UPPER LOWER FAIL

When capacitance is present, the time constant based on the capacitance and
resistance values may delay the measurement results.
Setting an upper-limit value while using a fixed range restricts the range of
resistance that can be measured. Therefore, even if a resistance value lower than
the preset upper-limit value is measured, "

UPPER FAIL

the preset lower-limit, "

. In addition, even when the measured resistance value is higher than

" may be displayed, resulting in a LOWER FAIL.

U.F.

" is displayed resulting in an

O.F.

See Section 4.3.2

.

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65

4.5.4 Screening in "FAIL" State

1 2 3

1 Measured

voltage value

2 Upper-limit value

icon and Lower­limit value icon

3 Measured

resistance value

4 Test completion

time

5 Test-voltage type

6 FAIL

4

5

Indicates the voltage in the FAIL state.

The symbol appears when the upper-limit value is set,
and the symbol appears when the lower-limit value is
set.

Indicates the measured resistance value in the FAIL state.

"

"isdisplayed.

0.0s

Indicates the test type (DC).

Indicates that the unit is in the FAIL state.

with

UPPER

indicate LOWER FAIL.

to indicate UPPER FAIL, and with

FAIL

6

lights up

LOWER

to

Danger lamp

Indicates that a voltage is being output. The lamp stays on during the test.
In the insulation-resistance mode, the lamp will also light if a voltage
exceeding the safety voltage (approximately DC 60 V) remains between the
output terminals after the test has been completed.

Analog voltmeter

Indicates the voltage value being output. Even when values are held using
the "FAIL hold function," the value of the analog voltmeter is not held.

External I/O

――――――――――

The

I-FAIL

lights on the fluorescent indicator.

FAIL

Both the

signal and either the

――――――――――

I-FAIL

and

――――――――――

U-FAIL

ON as long as the FAIL state is held. The

――――――――――

U-FAIL

signals, as well as the

――――――――――

or

L-FAIL

――――――――――

I-FAIL

,

signal come on when

――――――――――

L-FAIL

――――――――――

U-FAIL

signal remain

――――――――――

and

L-FAIL
signals are turned OFF when the FAIL light on the fluorescent indicator goes
out.
If voltage remains in the output-voltage terminal following the termination of
a test, the

――――――――――

the

H.V.ON

――――――――――

H.V.ON

signal remains ON. When the

signal is immediately turned OFF.

DANGER

lamp goes out,

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4.5 "PASS" or "FAIL" Determination

66

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4.6 Automatic Discharge Function

When a test object that contains a capacity component is subjected to a
insulation-resistance test, the object might remain electrically charged,
thereby causing an electric shock. This unit is equipped with a function to
discharge residual electricity upon termination of the insulation-resistance
test (discharge resistance: 726 kΩ).
The unit automatically switches to the internal discharge circuit to discharge
the test object (the

DANGER

When the voltage between the output terminals falls below the safety voltage
(approximately DC 60 V), the
capacity component of the test object, the more time is required to discharge
the test object.

lamp is lit).

DANGER

lamp goes out. The larger the

NOTE

The unit does not return to the READY state until the
upon completion of the test. Until the unit returns to the READY state, no key
operation is accepted.
With an optional setting, the unit can change to the READY state, regardless of
the

DANGER

START Protection Function).
In such a case, the voltage output terminals may contain residual electricity even
when the unit is in the READY state.

lamp indication, upon completion of the test (see Section 7.14

DANGER

lamp goes out

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j

67

Chapter 5

1

2

Auto Test Mode Testing Method

This chapter describes how to set auto test mode test conditions and the
proper testing procedure.
Read chapter 2, and make the necessary preparations for testing.

This mode has two types:

(1) W Imode

Tests for withstand voltage, then insulation resistance.

Flashing

3

4

5

6

7

8

NOTE

(2) I Wmode

Tests for insulation resistance, then withstand voltage.

Flashing

The lamps above the key light. When switching between withstand-

voltage and insulation-resistance testing, the W or I lamp lights,
respectively.

Note that the output waveform may be distorted when conducting an

AC withstand voltage test for a voltage-dependent device or object (e.g.,
ceramic capacitor). Excessively large distortion may damage the device
or tested ob

ect.

9

10

11

12

13

14

A

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68

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5.1 Auto Test Mode Display

READY

｢READY 状態｣

state

・The unit is ready for starting a test. The

READY

lamp is turned on.

・W I (Withstand-voltage test Insulation-resistance test) mode: the unit is in the READY

state for withstand-voltage testing.

・I W (Insulation-resistance test Withstand-voltage test) mode: the unit is in the READY

state for insulation-resistance testing.

・Press the
・Press

SHIFT+STOP

START

key while in the READY state.

keys to display the Optional Function Setting screen.

・Key-lock Function can be used. (See Section 5.2.1)

W→I/I→W key

SHIFT + STOP key

Setting optional functions

｢READY 状態｣

Setting the optional functions allows testing under various conditions.
(See Chapter 7)

Withstand-voltage mode

｢READY 状態｣

READY

state

・To make test settings, withstand-voltage mode must be in the SETTING state.
・For details on settings, see chapter 3, "Withstand Voltage Mode Testing Method."
・Make sure you set a test time.

Insulation-resistance mode

｢READY 状態｣

READY

state

・To make test settings, insulation-resistance mode must be in the SETTING state.
・For details on settings, see chapter 4, "Insulation Resistance Mode Testing Method."
・Make sure you set a test time.

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69

START key

TEST

｢READY 状態｣

state

・When the unit is in the TEST state, the
・When performing a withstand-voltage test, compares the measured voltage value and the

measured current value set in withstand-voltage mode SETTING state. If the measured value
deviates from either of these values, the unit terminates the test and switches to the FAIL
state.

・When performing an insulation-resistance test, compares the measured resistance value and

the value set in the insulation-resistance mode SETTING state. If the value deviates from
either of these values once the test time has elapsed, the unit shifts to the FAIL state.

・If both the voltage and insulation-resistance tests are passed, the unit switches to the PASS

state.

・Press the

Key operation in the TEST status

PASS

｢READY 状態｣

・Indicates that both the voltage and insulation-resistance tests were passed.

・The
・The PASS state can be maintained if the PASS Hold function is disabled in the optional

STOP

state

up.

PASS

before switching to the READY state.

settings. (See Section 7.1)

See Section 5.4.2

lamp is lit. This indicates that a test is in progress.

TEST

key to forcibly terminate the test.

Forced ending

See Section 5.5.1

lamp is turned on. The PASS state screen is displayed for about 0.3 second

Press the

STOP

key.

PASS

lights

1

2

3

4

5

6

7

8

state

FAIL

｢READY 状態｣

・Indicates that either the withstand-voltage or insulation-resistance test was failed.
・When performing a withstand-voltage test, if the measured current value deviates from the

upper-limit value,
the lower-limit value,

・When performing an insulation-resistance test, if the measured resistance value deviates

from the lower-limit value,
the upper-limit value,

・The FAIL state can be maintained. To return to the READY state, press the

which will cancel the FAIL Hold function.

・FAIL Hold function can be disabled in the optional settings.The FAIL-state screen is

displayed for 0.3 seconds, and the unit then switches to the READY state. (See Section

7.2)

See Section 5.5.3

UPPER

and

LOWER

LOWER

UPPER

FAIL

and

and

light up. If the measured current value deviates from

light up.

FAIL

and

FAIL

light up. If the resistance value deviates from

FAIL

light up.

STOP

9

10

11

key,

12

13

14

A

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5.1 Auto Test Mode Display

70

_____________________________________________________________________________________________

5.2 Displaying the "READY" State

In the READY state, the unit is always ready to start a test. The

READY

lamp remains lit to indicate the READY state.
You can make settings for each test type in a variety of modes. (See chapter
3andchapter4)
The settings for W I mode are the same as those for withstand-voltage
mode. (See Section 3.2)

The settings for I W mode are the same as those for insulation-resistance
mode. (See Section 4.2)

Danger lamp

Indicates that a voltage is being output. This lamp remains lit as long as a
voltage is being applied to the output terminal. It does not light up in the
READY state.

Analog voltmeter

Indicates the voltage value being output in withstand-voltage test. In the
READY state, the value remains at 0 kV.

External I/O

――――――――――

The
The

READY

――――――――――

READY

signal is ON when

READY

signal is turned OFF when

is lit on the fluorescent indicator.

READY

is not lit.

Key Operations

SHIFT＋STOP

START

LOCK

Displays the Optional functions setting screen.
(See Chapter 7)

Test Start (See Section 5.4)

Key-lock function (See Section 5.2.1)

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71

5.2.1 Key-lock Function

1

NOTE

It inactivates all keys except the
The

KEYLOCK

Use this function when you do not want to change the test mode or test
settings.

To switch to the KEY-LOCK state, press the
is lit.
To cancel the key-lock function, press the
while holding down the

Even when the key-lock function is activated, the
REMOTE CONTROL BOX and the start and stop signals on the external I/O
terminal remain active.

lamp is lit while the key-lock function is active.

SHIFT

START

key. The

key,

STOP

LOCK

LOCK

KEYLOCK

START

key, and the range switch.

key. The

key in the KEY-LOCK state

lamp is not lit.

and

STOP

KEYLOCK

keys on the

2

3

lamp

4

5

6

7

8

9

10

11

12

13

14

A

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5.2 Displaying the "READY" State

72

p

_____________________________________________________________________________________________

5.3 "SETTING" State

In Auto test mode, test settings cannot be changed. To change test settings,
the withstand-voltage and insulation-resistance modes must be in the
SETTING state. (See Section 3.3 and 4.3)
After you have made the various test settings, select Auto test mode.

NOTE

Make withstand-voltage mode

Make insulation-resistance mode
test settings

W→I/I→W

key

Forcibly terminate

If you try to start a test in the Auto test mode, the test mode when the test
time is switched

is displayed (

OFF

flashes), and the test cannot be

OFF

started.

If the test time is set to OFF in the withstand-voltage mode or insulation­resistance mode, the test mode with its time set to
upon startup of the test in the Auto test mode, and the test cannot be started.
Return to withstand-voltage or insulation-resistance mode, and set the test time to

.

ON

If the set lower-limit value≧upper-limit value, an item of comparative value
flashes upon startup of the test, and the test cannot be started.
In the insulation-resistance mode, if the set delay time≧test time, time-setting
items flash upon startup of the test, and the test cannot be started.

Note that the unit does not start test if the test-voltage value is greater than the

・

out

ut-voltage restrictingvalue. See Section 7.9.

is displayed (

OFF

OFF

flashes)

Flashing

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73

5.4 Starting a Test

The flowchart below explains how a test is carried out.

Setting the test parameters

「READY 状態」での設定

Make withstand-voltage test settings in withstand-voltage mode. (See chapter 3.)
Make insulation-resistance test settings in insulation-resistance mode. (See chapter 4.)

Selecting the W I/I W mode

「READY 状態」での設定

Select W I mode, or I W mode.

Starting a Test

「READY 状態」での設定

Press the
will start.

Determination

「READY 状態」での設定

START

TEST

key when

and the

See Section 3.4.1 / 4.4.1 /5.4.1

READY

DANGER

See Section 3.5/ 4.5/ 5.5

is lit. The unit will change to the TEST status and a test

lamp are lit in the TEST state.

Compares the preset test settings (current upper- and lower-limit values, and resistance upper­and lower-limit values) and the measured value, and conducts screening.

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5.4 Starting a Test

74

R

_____________________________________________________________________________________________

5.4.1 Executing a Test

To avoid electric shock, make sure that no high voltage is being applied

DANGE

to the output, confirm the following items, and output voltage.
(1) The analog voltmeter reads 0 kV.
(2) The
(3) The

DANGER lamp is OFF.

READY

lamp is lit (it is off in the Double Action mode).

NOTE

Priority for control of the
the REMOTE CONTROL BOX, the external I/O, and the front panel of the unit.
Connecting the switch signal line plug on the REMOTE CONTROL BOX disables
the

START

I/O.

1. Press the

key on the front panel of the unit and the start signal for the external

START

START

key when

The unit will change to the TEST status and a test will start.

DANGER

lamp are lit in the TEST state.

2. In either of the cases below, the test will be terminated and

LOWER

,or

FAIL

will light.

key is in the following order: the

READY

is lit.

START

TEST

UPPER

key on

and the

,

When performing a withstand-voltage test:

The output voltage doesn't reach the set test voltage value ± 5%.

The output voltage deviates from the test voltage value during the test

and doesn't return to the set value ± 1 dgt. within 5 seconds.

When performing an insulation-resistance test:

About 1 second after the test has started, the output voltage is still

lower than 1/2 of the set test voltage.

The test time has elapsed without the output voltage reaching a level

between 5% lower and 50% higher than the set test voltage value.

Output voltage during testing differs from the test voltage value and

does not fall within the range 80% to 150% of the voltage setting.

*See Section 3.4.1 / 4.4.1

3. To terminate the test, press the

STOP

key. The unit will immediately stop
outputting a voltage and switch to the READY state. In such a case, no
screening is conducted.

NOTE

The

UP/DELAY

insulation-resistance testing delays. (However, it does not light during time testing
when insulation-resistance test termination mode is set to 0 [initial setting].)
The

DOWN

lamp lights during withstand-voltage testing ramp-up and during

lamp lights during withstand-voltage testing ramp-down.

Optional Functions

The Hold function can be used to hold the value that was effective at the

time of forced termination of the test. (See Section 7.3)

If theWorIkey is pressed when the Hold function is enabled, you can

view the next test result.

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75

5.4.2 Screening in "TEST" State

(1) When performing a withstand-voltage test:

Similar to the withstand-voltage mode TEST state. (See Section 3.4.2)

(2) When performing an insulation-resistance test:

Similar to the insulation-resistance mode TEST state. (See Section 4.4.2)

Danger lamp

Indicates that a voltage is being output. The lamp stays on during the test.
This lamp remains lit even after completion of the test, if a voltage higher
than the safety voltage (approximately AC 0.03 kV (AC withstand-voltage
test) or approximately DC 60 V (DC withstand-voltage test or insulation­resistance test) has flowed between output terminals.

Analog voltmeter

Indicates the voltage value being output.

External I/O

―――――――

The

TEST

up. The

signal is turned ON when

――――――――――

H.V.ON

signal is turned on when the

on the fluorescent indicator lights

TEST

DANGER

lamp lights up. The
two signals are turned OFF at the same time.
Upon startup of the test, although
reaches the set test voltage or during the ramp-up time, the

flashes until the output voltage

TEST

――――――――

TEST

signal is

ON.

Optional Functions

Setting can be performed so that the

――――――――

TEST

signal will be OFF while

TEST

flashes. See Section 7.15.

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76

W

_____________________________________________________________________________________________

5.5 PASS or FAIL Determination

5.5.1 "PASS" State

Even when a test has been terminated, there may still be voltage in the

ARNING

output-voltage terminal. Before touching the output-voltage terminal,
H.V. TEST LEAD, or tested object, make sure that no high voltage is
being applied to the output, confirm the following items.
(1) The analog voltmeter reads 0 kV.
(2) The
(3) The

DANGER lamp is OFF.

READY

lamp is lit (it is off in the Double Action mode).

When the preset test time has elapsed, the unit switches to the PASS state
and immediately stops outputting a voltage.
During the insulation-resistance test, if the output voltage doesn't reach a
level between 5% lower and 50% higher than the set test voltage value,
screening will not be performed.

Optional Functions

The PASS state is held using the PASS Hold function. (See Section 7.1)
If theWorIkey is pressed when the Hold function is enabled, you can

view the next test result.

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p

p

g

g

p

p

p

g

77

Flow of PASS determination
W Imode

Test voltage

Test voltage

Ramp-up

time

Flashin

I Wmode

Insulation
resistance
test time

withstand-voltage

test time

DANGER Lam

DANGER Lam

Ramp-down

Flashin

Ramp-up

time

Insulation

time

140 ms

withstand-voltage

resistance
test time

0.03 kV AC or

0.06 kV DC

DANGER Lam

test time

60 VDC

Ramp-down

time

0.03 kV AC or

0.06 kV DC

60 VDC

*

TEST flashing

:

*

DANGER Lam

1. Press the

START

Flashin

DANGER Lam

80 ms

key to start a test.

2. In W I mode, the test order is Withstand-voltage test Insulation-

resistance; in I W mode, the test order is Insulation-resistance test
Withstand-voltage test.

3. If both tests clear the test settings, the unit stops outputting a voltage and

switches to the PASS state.

lights up in the PASS state.

PASS

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_____________________________________________________________________________________________

5.5.2 Screening in "PASS" State

(1) W Imode

Similar to the insulation-resistance mode TEST state. (See Section 4.5.2)

(2) I Wmode

Similar to the withstand-voltage mode TEST state. (See Section 3.5.2)

Danger lamp

Indicates that a voltage is being output. The lamp stays on during the test.
The lamp will also light if a voltage exceeding the safety voltage
(approximately AC 0.03 kV (AC withstand-voltage test)) or approximately
DC 60 V (DC withstand-voltage test or insulation-resistance test) remains
between the output terminals after the test has been completed.

Analog voltmeter

Indicates the voltage value being output. Even when values are held using
the "PASS hold function," the value of the analog voltmeter is not held.

External I/O

――――――

The

PASS
As long as the PASS state is held, the
signal is turned OFF when the
out. If voltage remains in the output-voltage terminal following termination
of a test, the

――――――――――

the

H.V.ON

0.03 kVAC or below 60 VDC, the

signal is turned ON when

PASS

――――――――――

H.V.ON

signal remains ON. When the

light on the fluorescent indicator goes

on the fluorescent indicator is lit.

PASS

―――――――

PASS

signal remains ON. The

DANGER

lamp goes out,

signal is immediately turned OFF. If the voltage drops below

DANGER

lamp goes out.

―――――――

PASS

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79

5.5.3 "FAIL" State

Even when a test has been terminated, there may still be voltage in the

ARNING

output-voltage terminal. Before touching the output-voltage terminal,
H.V. TEST LEAD, or tested object, make sure that no high voltage is
being applied to the output, confirm the following items.
(1) The analog voltmeter reads 0 kV.
(2) The
(3) The

DANGER

READY

lamp is OFF.

lamp is lit (it is off in the Double Action mode).

If the measured voltage deviates from the upper or lower value during the
test, the unit switches to the FAIL state and immediately stops outputting a
voltage. The FAIL state can be divided into UPPER FAIL and LOWER
FAIL states. During the insulation-resistance test, if the output voltage
doesn't reach a level between 5% lower and 50% higher than the set test
voltage value, screening will not be performed.

Withstand voltage test

UPPER FAIL

LOWER FAIL

The measured current has exceeded the upper-limit value.

The measured current has dropped below the lower-limit
value. (When the lower-limit value is set to OFF, LOWER
FAIL is ineffective.)

If the output voltage doesn't reach the set test voltage value±5% or if the
voltage deviates from the set voltage value, FAIL will result.
or

FAIL

will light.

UPPER,LOWER

Insulation resistance test

The measured resistance has exceeded the upper-limit

UPPER FAIL

LOWER FAIL

value. (When the upper-limit value is set to OFF, UPPER
FAIL is ineffective.)

The measured resistance has dropped below the lower­limit value.

If the test time has elapsed without the output voltage reaching a level
between 5% lower and 50% higher than the set test voltage value or if the
voltage deviates largely from the set voltage value, FAIL will result.

LOWERorFAIL

will light.

UPPER

,

Optional Functions

The FAIL state is held using the FAIL Hold function. (See Section 7.2)
If theWorIkey is pressed when the Hold function is enabled, you can

view the next test result.

Flow of FAIL determination

1. Press the

START

key to start a test.

2. Perform a withstand-voltage and insulation-resistance test.

3. When the measured current or measured resistance values deviate from

the preset test settings, the unit stops outputting a voltage and switches to
the FAIL state.

UPPER

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lights up in the FAIL state together with

FAIL

5.5 PASS or FAIL Determination

LOWER

or

80

(

)

_____________________________________________________________________________________________

NOTE

If a current double to the preset upper-limit value is detected while performing a
withstand-voltage test, the voltage is immediately blocked by the insulation
circuit, resulting in an UPPER FAIL. In such cases, the measured current value
is not displayed correctly.
When the optional "Insulation Resistance Measurement Range" function is set to

1

:AutoRange",ittakesupto1.5stodisplaytheresistancevalue. Whenthetest

"
finishes before the preset test time, the test results in a UPPER LOWER FAIL.
Setting an upper-limit value while using a fixed range restricts the range of
resistance that can be measured. Therefore, even if a resistance value lower than

O.F.

the preset upper-limit value is measured, "

" is displayed resulting in an

UPPER FAIL. In addition, even if the measured resistance value is higher than

U.F.

the preset lower-limit value, "
FAIL.

See Section 4.3.2

" may be displayed, resulting in a LOWER

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5.5.4 Screening in "FAIL" State

(1) When performing a withstand-voltage test:

Similar to the withstand-voltage mode TEST state. (See Section 3.5.4)

(2) When performing an insulation-resistance test:

Similar to the insulation-resistance mode TEST state. (See Section 4.5.4)

Danger lamp

Indicates that a voltage is being output. The lamp stays on during the test.
The lamp will also light if a voltage exceeding the safety voltage
(approximately AC 0.03 kV (AC withstand-voltage test)) or approximately
DC 60 V (DC withstand-voltage test or insulation-resistance test) remains
between the output terminals after the test has been completed.

Analog voltmeter

Indicates the voltage value being output. Even when values are held using
the "FAIL hold function," the value of the analog voltmeter is not held.

External I/O

――――――――――

The

W-FAIL

fluorescent indicator, and the

――――――――――

The

W-FAIL
OFF when
If voltage remains in the output-voltage terminal following the termination of
a test, the

――――――――――

the

H.V.ON

――――――――――

or

I-FAIL

signal or the

goes out on the fluorescent indicator.

FAIL

――――――――――

H.V.ON

signals are turned on when FAIL appears on the

――――――――――

U-FAIL

――――――――――

I-FAIL

or

――――――――――

,

U-FAIL

signal remains ON. When the

signal is immediately turned OFF.

――――――――――

L-FAIL

,and

signals also.

――――――――――

L-FAIL

DANGER

signals are turned

lamp goes out,

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5.6 Automatic Discharge Function

When a test object that contains a capacity component is subjected to a
withstand-voltage test and insulation-resistance test, the object might remain
electrically charged, thereby causing an electric shock. This unit is equipped
with a function to discharge residual electricity upon termination of the

withstand-voltage test (discharge resistance: 726 kΩ).

The unit automatically switches to the internal discharge circuit to discharge
the test object (the

DANGER

When the voltage between the output terminals falls below the safety voltage
(approximately AC 0.03 kV or DC 60 V), the
larger the capacity component of the test object, the more time is required to
discharge the test object.

lamp is lit).

DANGER

lamp goes out. The

NOTE

In W→I mode, the insulation-resistance test does not start up if the voltage
between the output terminals has not fallen below the safety voltage
(approximately AC 0.03 kV [AC insulation-resistance test] or approximately DC
60 V [DC insulation-resistance test]) upon completion of the withstand-voltage
test.
In I→W mode, the withstand-voltage test does not start until the voltage
between the output terminals has fallen below the safety voltage (approximately
DC 60 V) upon completion of the insulation-resistance test.
The test is terminated and the unit does not shift to the READY state until the

DANGER

unit returns to the READY state.
With an optional setting, the unit can change to the READY state, regardless of
the
In such a case, the voltage output terminals may contain residual electricity even
when the unit is in the READY state.

lamp goes out. Furthermore, all key operations are invalid until the

DANGER

lamp indication, upon completion of the test (See Section 7.14).

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83

Chapter 6

1

2

Program Mode Testing Method

This chapter describes program setting and testing methods in the program
mode.
Read chapter 2, and make the necessary preparations for testing.

Press the
lights.)

PROG

key to enter program mode. (The lamp above the key

Flashing

3

4

5

6

7

8

NOTE

Note that the output waveform may be distorted when conducting an AC withstand
voltage test for a voltage-dependent device or object (e.g., ceramic capacitor).
Excessivel

large distortion maydamage the device or tested object.

9

10

11

12

13

14

A

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6.1 Program Mode Display

READY

｢READY 状態｣

ENTER

key

state

The unit is ready for starting a test. The

・

Press the

・

Press the

・

Press

・

Key-lock Function can be used. (See Section 6.2.1)

・

START
ENTER

SHIFT+STOP

key while in the READY state.

key while in Program setting state.

keys to display the Optional Function Setting screen.

SHIFT + STOP key

Setting optional functions

｢READY 状態｣

Setting the optional functions allows testing under various conditions.
(See Chapter 7)

STOP key

READY

lamp is turned on.

Program setting

｢READY 状態｣

In this state, test sequences and test conditions for each test can be set.

・

Up to 50 steps and 32 files can be set.

・

To move to the next item, press the

・

state

ENTER

key. If the

ENTER

key is pressed during data
input, the setting of a step that is in the process of being set is finalized, and the unit moves
to the setting of the next step.
When the

・

STOP

key is pressed, the program setting is terminated and the unit returns to the

READY state.

Program setting items

FILE: Program file number and scanner condition
(OFF, single scan, multi-scan)

STEP: Step number

SCAN: Setting of scanner channel (not displayed when the
scanner is set to OFF)

W/I: Setting of the test type (selection of the withstand-voltage
test/insulation-resistance test, or if the test is terminated in this
step)

DATA INPUT: Setting of various test items

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START key

TEST

｢READY 状態｣

state

When the unit is in the TEST state, the

・

progress.
The measured current and resistance values are compared with the lower-and upper-limit

・

values. If the measured resistance value has deviated from those limit values when the test
time has elapsed, the unit switches to the FAIL state. If the measured resistance value has not
deviated in any test, the unit switches to the PASS state.
Press the

・

Key operation in the TEST status

PASS

｢READY 状態｣

・

・
・

STOP

state

This state demonstrates that the measured value has passed all programmed tests.
lights up.

PASS

The
before switching to the READY state.
The PASS state can be maintained if the PASS Hold function is disabled in the optional
settings. (See Section 7.1)

See Section 6.5.2

lamp is lit. This indicates that a test is in

TEST

key to forcibly terminate the test.

Forced ending

See Section 6.6.1

lamp is turned on. The PASS state screen is displayed for about 0.3 second

Press the

STOP

key.

PASS

1

2

3

4

5

6

7

8

state

FAIL

｢READY 状態｣

This state demonstrates that the measured value has not passed the set test conditions.

・

When the measured value has deviated from the lower-limit value,

・

with

LOWER

lights up along with
The FAIL state can be maintained. To return to the READY state, press the

・

which will cancel the FAIL Hold function.
FAIL Hold function can be disabled in the optional settings.The FAIL-state screen is

・

displayed for 0.3 seconds, and the unit then switches to the READY state.
(See Section 7.2)

See Section 6.6.3

lights up along

FAIL

, and when the measured value has deviated from the upper-limit value,

UPPER

.

STOP

9

10

11

FAIL

12

key,

13

14

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6.2 Displaying the "READY" State

In the READY state, the unit is always ready to start a test. The

READY

lamp remains lit to indicate the READY state.

When you enter the program mode by pressing the

・

PROG

key, the step-1
settings of the file that was loaded previously are displayed.
From this state, you can enter the "program setting state," perform

・

program-file loading, and set optional functions.

File number

Danger lamp

Indicates that a voltage is being output. This lamp remains lit as long as a
voltage is being applied to the output terminal. It does not light up in the
READY state.

Analog voltmeter

Indicates the voltage value being output. In the READY state, the value
remains at 0 kV.

External I/O

――――――――――

The
The

READY

――――――――――

READY

signal is ON when
signal is turned OFF when

Key Operations

PG.LOAD

SHIFT＋STOP

START

LOCK

READY

Moves to the program-file loading window.
(See Section 6.4)

Displays the Optional functions setting screen.
(See Chapter 7)

Test Start (See Section 6.5)

Key-lock function (See Section 6.2.1)

is lit on the fluorescent indicator.

READY

is not lit.

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6.2.1 Key-lock Function

1

NOTE

It inactivates all keys except the
The

KEYLOCK

Use this function when you do not want to change the test mode or test
settings.

To switch to the KEY-LOCK state, press the
is lit.
To cancel the key-lock function, press the
while holding down the

Even when the key-lock function is activated, the
REMOTE CONTROL BOX and the start and stop signals on the external I/O
terminal remain active.

lamp is lit while the key-lock function is active.

SHIFT

START

key. The

key,

STOP

LOCK

LOCK

KEYLOCK

START

key, and the range switch.

key. The

key in the KEY-LOCK state

lamp is not lit.

and

STOP

KEYLOCK

keys on the

2

3

lamp

4

5

6

7

8

9

10

11

12

13

14

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6.3 Program Setting State

To edit, change, or confirm the program file, enter the Program setting state.

NOTE

In the program setting state,
When the program mode is used, although the test-voltage value is displayed in
the READY state or "

1. When the

mode, the

ENTER

FILE No.

key is pressed in the READY state in the program

READY

ram settingstate," that voltage is not beingoutput.

lamp lights up and the unit enters the "program setting

state." READY goes off and the test does not start, even when the

is not lit, and the test cannot be started.

START

key is pressed.

2. The file number flashes. Select the number of the file to be edited or

changed using the / keys.

Scanner: OFF

3. To use the scanner, select the mode.* When the scanner is not used, set it

to OFF. (* :singlescan; : multi-scan)

4. Move the flashing cursor using the / keys, and select the mode using

the / keys. (For details on the scanner setting method, see the
instruction manual for the 3930 HIGH VOLTAGE SCANNER.)

Single scan mode

Multiple scan mode

4. To finalize the setting, press the

If the

STOP

key is pressed, the setting state can be exited without

ENTER

key.

finalizing the setting (the unit changes to the program-mode READY
state).

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