Hioki 3930 Instruction Manual

3930

Instruction Manual

HIGH VOLTAGE SCANNER

Jan. 2020 Revised edition 5
3930A981-05 20-01H

EN

Contents

Introduction i
Inspection
Safety Notes
Notes on Use

iv

Chapter Summary

Chapter 1 Overview 1

1.1 Product Introduction 1

1.2 Features

1.3 Names and Functions of Parts

1.3.1 Front panel 3

1.3.2 Rear panel 4

1.3.3 9615-01, 9615-02 H.V. TEST LEAD (Accessories) 5

1.4 External Dimensions 6

Chapter 2 Testing Arrangements 7

i

ii

v

2
3

2.1 Terms 7

2.2 Installation of the Unit

2.3 Connection

2.3.1 Connecting the Protective Conductor Terminal 11

2.3.2 Setting the Mode 12

2.3.3 Setting the ID 12

2.3.4 Control Connector Connection 13

2.3.5 High-voltage Input Cord and H.V. TEST LEAD
Connection 14

2.3.6 Powering On and Off the Unit 15

2.4 Startup Inspection 16

10
11

3930A981-05

Chapter 3 Control Signal and Control Mehod 17

3.1 Control Signal 17

3.1.1 Control Input Connector Pin Arrangement 18

3.1.2 Control Output Connector Pin Arrangement 21

3.2 Control Timing and Signal Levels 23

3.3 Internal Register

3.4 Control Method

3.4.1 When Connected to a 3153 AUTOMATIC
INSULATION/WITHSTANDING HiTESTER 26

3.4.2 When Connected to a Device Other Than the
3153 AUTOMATIC INSULATION/WITHSTANDING
HiTESTER 27

25
26

Chapter 4 Specifications 29

Chapter 5 Maintenance and Service 31

5.1 Maintenance and Inspection 31

5.2 Cleaning

32

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p

i

Introduction

Thank you for purchasing the HIOKI 3930 HIGH VOLTAGE SCANNER.
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 and
accessories. If damage is evident, or if it fails to operate according to the
specifications, contact your dealer or Hioki representative.

NOTE

Accessories

Control input connector connection cable (50-50 pin) 1
9615-01 H.V.TEST LEAD (HIGH side) 8
9615-02 H.V.TEST LEAD (LOW side) 1
Grounding cable 1
Instruction Manual 1

Before using the product the first time, verify that it operates normally to
ensure that the no damage occurred during storage or shipping. If you find
any damage, contact your dealer or Hioki representative.

Before using the product, make sure that the insulation on the test 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

resentative for repair.

re

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 3930 with other equipment, or if ownership is transferred to a
third party.

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ii

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Safety Notes

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

WARNING

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 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

DANGER

WARNING

CAUTION

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.

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

NOTE

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

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iii

Measurement categories

To ensure safe operation of measurement products, IEC 61010 establishes
safety standards for various electrical environments, categorized as CAT Ⅱ
to CAT IV, and called measurement categories.

CAT II

CAT III

CAT IV

Primary electrical circuits in equipment connected to
an AC electrical outlet by a power cord (portable
tools, household appliances, etc.)
CAT II covers directly measuring electrical outlet
receptacles.

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).

Using a measurement product in an environment designated with a higher­numbered category than that for which the product is rated could result in a
severe accident, and must be carefully avoided.
Use of a measurement instrument that is not CAT-rated in CAT II to CAT
IV measurement applications could result in a severe accident, and must be
carefully avoided.

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iv

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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

DANGER

WARNING

internal components of the product carry high voltages and may
become very hot during operation.
The vinyl shield on the 9615-01 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 conductor
to earth (earth ground).
Before turning the product on, make sure the supply voltage matches
that indicated on its power connector. Connection to an improper
supply voltage may damage the product and present an electrical
hazard.
To avoid electric shock, when directly touching the high voltage test
leads or a device to be tested, wear rubber-insulated gloves and make
sure that the automatic control is stopped.

CAUTION

NOTE

To avoid damaging the power cord, grasp the plug, not the cord, when
unplugging the cord from the power outlet.
To avoid damaging the 9615-01, 9615-02 H.V. TEST LEAD, do not kink or
pull on the leads.
For safety reasons, when taking measurements, only use the 9615-01,
9615-02 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.

・

This product may cause interference if used in residential areas. Such use must be
avoided unless the user takes special measures to reduce electromagnetic
emissions to prevent interference to the reception of radio and television
broadcasts.

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v

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 Control Signal and Control Method

Describes the control signal and control method when using a device other
than the 3153 as the master unit.

Chapter 4 Specifications

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

Chapter 5 Maintenance and Inspection

Covers the maintenance, inspection and ultimate disposal.

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vi

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1

Chapter 1

Overview

1.1 Product Introduction

The 3930 is a passive auxiliary tester that is connected to and controlled by
a master unit (the 3153 AUTOMATIC INSULATION/WITHSTANDING
HiTESTER, or a sequencer). The 3930 cannot operate on a standalone
basis.
This auxiliary tester is designed to safely permit testing of multiple locations
with a minimum of connection changes. This unit can output from any
channel high voltage that is input through a high-voltage input cord simply
by turning the internal high-voltage relays on and off. Up to four of these
units can be connected to a single master unit, with each unit identified by a
unique ID.

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1.1 Product Introduction

2

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1.2 Features

In order to prevent electric shock, use voltage to ground that is at or

WARNING

less than the SELV* on the LOW side of the high-voltage input cords.
Although the LOW side of the high-voltage input cords is functionally
insulated from ground, there is no withstand voltage.
*: SELV (separated external low voltage): effective value of 30 V, peak

valueof42.4V

(1) Direct connection to the 3153

The 3930 can be directly connected to the 3153 AUTOMATIC
INSULATION/WITHSTANDING HiTESTER. Because the 3153 supplies
power to the 3930, no separate power supply is needed.

(2) Single mode and Multi-mode

The 3930 has two operation modes: single mode and multi-mode. Single
mode permits testing of eight channels using the one COM channel and
eight high-output channels. Multi-mode permits testing of four pairs of two
different high-output channels.

(3) Multiple channels

In single mode, the 3930 can test eight channels. In multi-mode, the 3930
can test four channel pairs. In addition, a unique ID can be set for each unit,
allowing a maximum of four 3930s to be connected to a single master unit.

(4) Output channel indicators

The LEDs on the front panel indicate the current mode and the channels that
are being output.

(5) Insulated design

The power supply, the high-voltage inputs and outputs, and the control input
connector signal wires are all functionally insulated.

(6) Signal level from 5 to 24 V

Devices ranging from general logic to a sequencer can be connected by
selecting the supply voltage for the control signal system.

(7) Safe design that avoids duplicate IDs

When multiple 3930s are connected, the unit can detect incorrect (duplicate)
ID settings. When a mistake is detected, all output is shut off.

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1.2 Features

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3

1.3 Names and Functions of Parts

1.3.1 Front panel

In order to avoid electric shock, never touch the high-voltage output

WARNING

terminals (high, low), high-voltage test leads or the device being tested
while high voltage is being applied.

POWER switch

Channel output
indicator LEDs

Channel output
indicator LEDs

Mode indicator LED

ID error indicator LED

ID setting dial

Mode setting switch

POWER switch

Mode indicator LED

ID error indicator LED

ID setting dial

Mode setting switch

These LEDs light when the relay for the corresponding channel is on.
(Red: voltage output; green: COM connected)

Indicates the mode that is set by the mode setting switch.
(Red: single mode; green: multi-mode)

Lights red if a duplicate ID is detected when multiple 3930s are
connected.

Sets the ID of this 3930.

Sets the mode of this 3930 (single mode or multi-mode).

Turns on the 3930.

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1.3 Names and Functions of Parts

4

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1.3.2 Rear panel

In order to avoid electric shock, never touch the high-voltage output

WARNING

High-voltage input cord

Control input connector

terminals (high, low), high-voltage test leads or the device being tested
while high voltage is being applied.

High voltage output terminal
when multiple units are connected

Control output connector

Ground terminal

High-voltage input cord

Control input connector

Control output connector

Ground terminal

COM terminal

High voltage output terminals
for measurement

COM terminal when multiple
units are connected

High voltage output terminal
when multiple units are
connected

COM terminal

High voltage output
terminals for measurement

COM terminal
when multiple units are
connected

Serial No.

This cord is used to input high voltage. Use voltage to
ground that is at or less than the SELV* on the LOW side.

This connector is used to control the 3930.

This connector is used to connect multiple 3930s.

This terminal grounds the 3930 case.

This terminal is connected to the LOW side of the high­voltage input cord. In single mode, this terminal is the
LOW side common input.

These are the output terminals that are connected to the
device being measured.

This is the LOW side output terminal when multiple 3930s
are connected.

This is the high-voltage output terminal when multiple
3930s are connected.

This is the high-voltage output terminal when multiple
3930s are connected.The serial number consists of 9 digits.

Serial No.

The first two (from the left) indicate the year of
manufacture, and the next two indicate the month of
manufacture.
Required for production control. Do not peel off the label.

*: SELV (separated external low voltage): effective value of 30 V, peak

value of 42.4 V

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1.3 Names and Functions of Parts

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g

)

5

1.3.3 9615-01, 9615-02 H.V. TEST LEAD (Accessories)

The vinyl sheath on the alligator clip of the 9615-01 and 9615-02

DANGER

High side voltage output plug

H.V.TEST LEAD does not have an insulation withstand voltage. In order
to avoid electric shock, never touch the alligator clip while high voltage
is being generated.

9615-01

9615-02

Low side voltage output plug

Alligator clip

High side voltage

output plug

Low side voltage

output plug

NOTE

When used in a humid environment, it is possible that the H.V.TEST LEAD could
attract moisture, creating an increase in leak current. Under these conditions, we
recommend applying conformal coatings to the 9615-01 or 9615-02, except for the
metallic connector surfaces.
Recommended conformal coatin

If a 9615-01 or 9615-02 H.V.TEST LEAD will be in contact with or in the
vicinity of a metal surface while it is used, or if it must be used in a bundled
state, take measures such as wrapping the lead wire with a spiral tube that
will maintain a separation of 5 to 10 mm between lead wires or between the
lead wire and the metal surface. This will prevent capacitive coupling
between the lead wire and the metal surface or between lead wires, an
increase of leak current, or the radiation of noise.

Attach to the test point on the device being measured.

Connect to a high-voltage output terminal for
measurement on the 3930.

Connect to the COM terminal on the 3930.

s: HumiSeal 1A27NSLU(AR BROWN

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1.3 Names and Functions of Parts

6

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1.4 External Dimensions

31 mm (1.22")

350 mm (13.78")

20.5 mm (0.81")

100 mm (3.94")

13 mm (0.51")

316 mm (12.44")

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1.4 External Dimensions

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7

Chapter 2

Testing Arrangements

2.1 Terms

This section explains several terms that should be understood before using
this device.

(1) Master unit

The 3930 is a passive auxiliary tester that is connected to and controlled by
a master unit (the 3153 AUTOMATIC INSULATION/WITHSTANDING
HiTESTER, or a sequencer). The 3930 cannot operate on a standalone
basis.
In this manual, the term "master unit" is applied to devices that control the
3930 (such as the 3153 AUTOMATIC INSULATION/WITHSTANDING
HiTESTER or a sequencer) and to devices that supply high voltage or high
current and high voltage.

(2) IDs and distance from the master unit

Up to four 3930s can be connected to and independently controlled by one
master unit. In order to permit this, the unit has four scanner control signals
(inputs), and an ID can be set in order to select which scanner control signal
to use. The ID is represented by a number from "1" to "4," and is set by
means of the ID setting dial.
When connecting multiple units, only one unit can be connected directly to
the master unit; the other three are connected in daisy chain fashion to the
first 3930. In this manual, references to the distance between a specific
3930 and the master unit are based on the number of 3930s between the unit
and the master unit, not the physical distance of the unit to the master unit
or the relative value of the unit's ID number.

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2.1 Terms

8

g

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(3) ID error

In order to avoid electric shock, a short circuit or damage to the

WARNING

equipment, do not change the ID while the power is on for the 3930 or
the master unit, or while voltage is being applied.

This unit cannot be controlled correctly if the scanner control signal number
and the ID number do not match. In addition, in order to ensure safety, if
there is more than one 3930 with the same ID number connected to a single
master unit, an ID error is indicated on the 3930 with the duplicate ID
number. The ID error indicator LED lights, all output relays turn off in the
3930 with the duplicate ID, and that unit can not be controlled by the master
unit.
In this event, stop testing, turn off the power for the master unit and the
main unit, and set the IDs correctly.

NOTE

WARNING

When multiple 3930s are connected, note that when duplicate IDs exist, no ID error
is detected in the 3930 that is connected in the position that is farthest from the
master unit.

(4) Single mode

In order to avoid electric shock, a short circuit or damage to the
equipment, do not change the ID while the power is on for the 3930 or
the master unit, or while voltage is being applied.

In this mode, the 3930 tests eight high-voltage output channels paired with
the COM channel.
The devices being tested are connected between the high voltage output
terminal for each channel and the COM terminal. When this mode is set,
the mode indicator LED lights red, indicating single mode. All terminals for
CH1 to 8 on the 3930 are high-voltage output terminals. The voltage that is
input through the high-voltage input cord is output from the channels for
which the corresponding relays are on, and the output indicator LED lights
red.

NOTE

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2.1 Terms

When multiple 3930s are connected to one 3153, set all 3930s to the same mode.
If 3930s set to different modes are connected to one 3153, a connection error will

enerated.

be

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g

9

(5) Multi-mode

In order to avoid electric shock, a short circuit or damage to the

WARNING

equipment, do not change the ID while the power is on for the 3930 or
the master unit, or while voltage is being applied.

In this mode, the 3930 tests four pairs of two different high-voltage output
channels. CH1 to 4 are connected to the high-voltage output (HIGH side),
and CH5 to 8 are connected to COM (LOW side). The device being tested
is connected between the two corresponding channels. If this mode is set,
the mode indicator LED lights green, indicating multi-mode. When the 3930
is connected to the 3153, it is possible to measure between multiple pairs of
different points by combining any one of CH1 to 4 and any one of CH5 to

8. The LEDs for the two channels that are being measured light, indicating
that measurement is occurring between those channels. The LEDs for the
high-voltage outputs (CH1 to 4) light red, and the LEDs for the COM
terminal (CH5 to 8) light green.

NOTE

NOTE

When multiple 3930s are connected to one 3153, set all 3930s to the same mode.
If 3930s set to different modes are connected to one 3153, a connection error will

enerated.

be

(6) Mode error

When MD1 of the status information (refer to chapter 3, "Control Signals
and Control Methods") is low, it indicates the existence of an abnormality in
an internal circuit, such as a slide switch, which means that the mode is not
set correctly.
When a mode error is detected, stop using the unit and contact your nearest
dealer or our sales office.

If a mode error is detected, the output relay is controlled but the voltage that is
input from the high-voltage input cord is not output on the high-voltage output pin.

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2.1 Terms

10

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2.2 Installation of the Unit

Temperature: 0 to 40℃
Humidity: 80% RH or less (no condensation)
Do not install the instrument upside-down, or stand it on its side.

Avoid the following locations:
・Subject to direct sunlight.

NOTE

・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.

The noise generated by this unit may affect equipment located around the unit.

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2.2 Installation of the Unit

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11

2.3 Connection

2.3.1 Connecting the Protective Conductor Terminal

To avoid elect r ic shock, connect the protective conductor terminal to

WARNING

earth (earth ground) before making any other connections.
To avoid electric shock, be sure to connect the protective conductor
to earth (earth ground).

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

terminal from the rear of the unit.

2. Connect a specified grounding cable or an electric wire with a sufficient

current capacity to the protective conductor terminal, and secure the wire
using a Phillips-head screwdriver.

3. Ground the other end of the wire.

3930 rear panel

GND

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2.3 Connection

12

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2.3.2 Setting the Mode

In order to avoid electric shock or damage to the equipment, do not

WARNING

change the mode while the power is on for the 3930 or the master unit,
or while voltage is being applied to the high-voltage input cord.

The 3930 can be set to either single mode or multi-mode.
Use tweezers or a flat-head screwdriver to change the mode.
For details on the modes, refer to section 2.1, "Terms."

2.3.3 Setting the ID

In order to avoid electric shock or damage to the equipment, do not

WARNING

change the ID while the power is on for the 3930 or the master unit, or
while voltage is being applied to the high-voltage input cord.

Turn the ID setting dial on the 3930 to set the ID.
When multiple 3930s are connected, set a unique ID for each unit. If two of
the units have duplicate IDs, the ID error indicator LED lights on the unit
with the duplicate ID, all output relays turn off, and that unit stops accepting
control input.
Be sure that the ID correctly corresponds with the connection status of the

3930.

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2.3 Connection

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13

2.3.4 Control Connector Connection

In order to avoid electric shock or damage to the equipment, do not

WARNING

connect or disconnect the control connectors while the power is on for
the 3930 or the master unit, or while voltage is being applied to the
high-voltage input cord.

1. Confirm that the power is off for the master unit and for the 3930.

2. Connect the 3930's control input connector to the master unit.

When using the 3153 AUTOMATIC INSULATION/WITHSTANDING
HiTESTER as the master unit, use the control input connector cable
provided to make the connection.

3930 rear panel

Control input connector
connection cable

Control input connector

Control output connector

When connecting multiple 3930s, connect the control input connector to the
control output on the preceding 3930.
When using a device other than the 3153 AUTOMATIC
INSULATION/WITHSTANDING HiTESTER as the master unit, refer to
Chapter 3, "Control Signals and Control Methods," and be sure to make all
connections correctly.
Do not connect any device other than another 3930 to the control output
connector.

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2.3 Connection

14

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2.3.5 High-voltage Input Cord and H.V. TEST LEAD Connection

1. Confirm that the high-voltage output from the master unit is off.

2. Connect the high-voltage input cord to the high-voltage output terminal

on the master unit.

3. Using the H.V. TEST LEAD provided, connect the 3930 to the test

portion of the device to be tested.

NOTE

3930 rear panel

High-voltage Input Cord

Device to be tested

High-voltage output terminal
on the master unit

H.V. TEST LEAD

The leak current will be increased by contacting the high-voltage input cord and the
H.V. TEST LEAD with a metal face directly, or using the High and the Low side
voltage cord in a bundled state.
Taking measures is recommended, such as wrapping the lead wire with a spiral tube
that will maintain a separation of 5 to 10 mm between one lead wire and another, or
between the lead wires and the metal surface.
This will prevent an increase of the leak current, or a radiation of noise, resulting
from a capacitive coupling between one lead wire and another, or between the lead
wires and the metal surface.

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2.3 Connection

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g

15

2.3.6 Powering On and Off the Unit

CAUTION

Always observe the following cautions in order to avoid damaging the
equipment:

Before turning on the power, confirm that there is no voltage being applied
to the high-voltage input cord.
Carefully read Chapter 3, "Control Signals and Control Methods," check the
supply voltage and the connections, and then turn on the power.
Turn on the master unit first, before turning on the 3930.

Turning on the power

After first confirming that the master unit has already been turned on and
that no voltage is being applied to the high-voltage input cord, turn the
POWER switch ON (

).

NOTE

Turning off the power

After first confirming that no voltage is being applied to the high-voltage
input cord, turn the POWER switch OFF ( ).

This unit requires two power supplies: 24V DC between power supply SCV
and SCG to drive the relays and to control the internal circuitry, and 5 to
24V between power supply ISO_V and ISO_G to drive the photocouplers for
isolation (for determining the input signal level). Although SCG, ISO-G and
the LOW side of the high-voltage input cord are insulated from each other,
they are not insulated when the 3153 AUTOMATIC
INSULATION/WITHSTANDING HiTESTER is being used as the master
unit. Regarding ISO_V, carefully read Chapter 3, "Control Signals and
Control Methods," and then select ISO_V according to the master unit being
used to control the 3930.

When using a sequencer, for example, and the control signal level is 24 V and no
insulation is required, SCV and ISO_V can be used in common. Carefully read
Chapter 4, "Specifications," and then keep the current capacities in mind while
connectin

SCV to ISO V,and SCG to ISO G.

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2.3 Connection

16

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2.4 Startup Inspection

In order to avoid electric shock, allow at least 6ms to elapse after

WARNING

turning on a relay before applying voltage to the high-voltage input
cord.
The relays used in the 3930 require approximately 6 ms for the contact
to completely close or open. When stopping a test, cut off the voltage
and allow the test terminal voltage to reach the SELV* before turning a
relay off. If a relay is turned on or off while high-voltage current is
flowing through it, deposits may form on the relay, ultimately allowing
voltage to be output from an unexpected source.
*: SELV (separated external low voltage): effective value of 30 V, peak

valueof42.4V

In order to ensure safe operation, an initial inspection should be performed
according to the procedure described below.

1. Create a program ("Program 1") that turns on each channel in sequence in

single mode.

2. Create a program ("Program 2") that turns on each channel in sequence in

multi-mode.

3. After confirming that the power is off for both the 3930 and the master

unit, connect the control input connector to the master unit. Do NOT
connect the high-voltage input cord.

4. Set the 3930 to single mode, and then turn on the master unit and the

3930. After confirming that the mode indicator LED is red, confirm that
there is no continuity between the HIGH and LOW sides of the high­voltage input cord.

5. Execute Program 1, and confirm the following:
・Confirm that there is continuity between the HIGH side of the high-

voltage input cord and the high-voltage output terminals of the channels
for which the LEDs are lit.

・Confirm that there is no continuity between the HIGH side of the high-

voltage input cord and the high-voltage output terminals of the channels
for which the LEDs are not lit.

6. Turn off the 3930 and the master unit, set the 3930 to multi-mode, and

then turn both units back on again. Do NOT connect the high-voltage
input cord.

7. After confirming that the mode indicator LED is green, confirm that there

is no continuity between the HIGH and LOW sides of the high-voltage
input cord.

8. Execute Program 2, and confirm the following:
・Confirm that there is continuity between each of the channels for which

the CH5 to 8 LED is lit (green) and the low side of the high-voltage input
cord.

・Confirm that there is no continuity between each of the channels for

which the CH5 to 8 LED is not lit and the low side of the high-voltage

input cord.
If an abnormality is discovered during the initial inspection, stop using the
unit and contact your nearest dealer or our sales office.

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2.4 Startup Inspection

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17

Chapter 3

Control Signal and

Control Mehod

3.1 Control Signal

NOTE

This section describes the control signal and control timing requirements
when using a device other than the 3153 AUTOMATIC
INSULATION/WITHSTANDING HiTESTER as the master unit.

The 3930's power supply inputs (SCV and SCG), the photocoupler drive power

supplies (ISO_V and ISO_COM), and the high-voltage input cord (HIGH side and

LOW side) are all insulated from each other. When using the 3153, note that these

lines are not insulated from each other within the 3153.

______________________________________________________________________________________________

3.1 Control Signal

18

_____________________________________________________________________________________________

3.1.1 Control Input Connector Pin Arrangement

This section describes the signals in the control input connector (rear panel).

25... ...1

50... ...26

Pin

Signal I/O Function

No.

――――――

1

2

3

4

SCAN4

――――――

SCAN3

――――――

SCAN2

――――――

SCAN1

I Scanner control signals

These signals are used to

I 27

select the 3930 that is to be
controlled.

I 28

I 29

5 A2 I Address signals

6 A1 I 31

These signals select a register
within the 3930. For details on
how to control these signals

7 A0 I 32

correctly, refer to "Control
timing and signal levels" and

Pin
No.

26

30

Signal I/O Function

―――――

ID1E

―――――

ID1O

―――――

ID2E

―――――

ID2O

―――――

ID3E

―――――

ID3O

―――――

ID4E

O These indicate that ID1 exists.

O

O These indicate that ID2 exists.

O

O These indicate that ID3 exists.

O

These indicate that ID4 exists.

O

"Internal registers."

8 D7 I Data signals

9 D6 I 34 MD4 O Mode signals

10 D5 I 35 MD3 O

11 D4 I 36 MD2 O

These signals turn relays on
and off. For details on how to
control these signals correctly,
refer to "Control timing and
signal levels."

33

―――――

ID4O

O

These indicate the status of
the 3930s that are connected.

12 D3 I 37 MD1 O

13 D2 I 38

14 D1 I 39

15 D0 I 40

16

Isolation power supply

41
This power supply drives the
photocouplers for internal
isolation. Input 5 to 24 V (DC)
between these pins and
ISO_COM. Refer to "Control

ISO_V

17 42

timing and signal levels" and
then select the voltage

N.C.

ISO_COM

－

No connection
Do not connect any lines to

－

these pins.

－

Isolation power supply
This power supply drives the
photocouplers for internal
isolation. (LOW side) Input 5
to 24 V (DC) between these
pins and ISO_V. These pins
are connected to ISO_COM in

the control output connector.
appropriate for the master unit
being used.
These pins are connected to
ISO_V in the control output
connector.

18

19 44

20 45

21 46

SCV

22 47

Scanner power supply
These are 24V DC (HIGH
side) inputs. Input 24V DC
between these pins and SCG.
These pins are connected to
SCV in the control output
connector.

43

SCG

Scanner power supply

These are 24V DC (LOW side)

inputs. Input 24V DC between

these pins and SCG. SCG is

connected to the case ground.

These pins are connected to

SCV in the control output

connector.

23 48

24 49

25 50

______________________________________________________________________________________________

3.1 Control Signal

_____________________________________________________________________________________________

Scanner control signal (

――――――――

SCANx

) inputs

19

These signals control the scanner. The scanner control signal that has the
same ID number as the unit is used. The data signals are fetched and the
relays are turned on/off at the rising edge of this signal. When this signal is
low, valid internal status signals are output. For details on how to control
these signals correctly, refer to "Control timing and signal levels."

Address signal (A2 to A0) inputs

These address lines are used to select the 3930's internal registers. For
details on how to control these signals correctly, refer to "Control timing and
signal levels" and "Internal registers."

Data signal (D7 to D0) inputs

These data signals are used to control the internal relays. If any of these
signals are high at the rising edge of the scanner control signal, the
corresponding relays turn on. If any of these signals are low at the rising
edge of the scanner control signal, the corresponding relays turn off. For
details on how to control these signals correctly, refer to "Control timing and
signal levels."

Isolation power supply (ISO_V) inputs

This power supply drives the photocouplers for internal isolation. Input 5 to
24 V (DC) between these pins and ISO_COM. Refer to "Control timing and
signal levels" and then select the voltage appropriate for the master unit
being used.

Scanner power supply (SCV) inputs

These are 24V DC (HIGH side) inputs. Input 24V DC between these pins
and SCG.

ID check signal 1 (

――――――

IDxE

)output

When this signal is low, it indicates that IDx exists.

ID check signal 2 (

――――――

IDxO

)output

When this signal is low, it indicates that IDx is duplicated.

Mode signal (MD4 to MD1) outputs

These signals output 3930 status information. For details on each signal,
refer to "Internal registers."

No connection (N.C.)

Do not connect any lines to these pins.

Isolation power supply (ISO_COM) inputs

This power supply drives the photocouplers for internal isolation (LOW
side). Input 5 to 24 V (DC) between these pins and ISO_V.

Scanner power supply (SCG) inputs

These are 24V DC (LOW side) inputs. Input 24V DC between these pins
and SCG. SCG is connected to the case GND.

______________________________________________________________________________________________

3.1 Control Signal

20

_____________________________________________________________________________________________

NOTE

HIGH

High voltage input

LOW

HIGH

The 3930's power supply inputs (SCV and SCG), the photocoupler drive power
supplies (ISO_V and ISO_COM), and the high-voltage input cord (HIGH side and
LOW side) are all insulated from each other. When using the 3153, note that these
lines are not insulated from each other within the 3153.

CH1

CH2

Mode switching

CH3

CH4

CH5

CH6

CH7

High voltage output

LOW

Basic Connection Figure

Control Input Connector Output signals

10 k

Ω

Control Input Connector Input signals

CH8

COM

OUT

3.6 k

Ω

IN

______________________________________________________________________________________________

3.1 Control Signal

_____________________________________________________________________________________________

21

3.1.2 Control Output Connector Pin Arrangement

This section describes the signals in the control output connector (rear
panel).
Do not connect any device other than another 3930 HIGH VOLTAGE
SCANNER to the control output connector. The following table is provided
for informational purposes.

Pin

Signal I/O Function

No.

Scanner control signals

1

――――――

SCAN4

These signals are used to
select the 3930 that is to be

O

controlled.

Pin
No.

26

Signal I/O Function

ID check signal 1 input

―――――

ID1E

This is the scanner connection
information from the preceding

I

3930. This is isolated by a
photocoupler.

ID check signal 2 input
This is the scanner connection
information from the preceding

I

2

――――――

SCAN3

O 27

―――――

ID1O

3930. This is isolated by a
photocoupler.

――――――

3

SCAN2

――――――

4

SCAN1

5 A2 O Address signals

6 A1 O 31

O 28

O 29

30
These are address signals
used to select a register within

―――――

ID2E

―――――

ID2O

―――――

ID3E

―――――

ID3O

I Information from the preceding

3930 is input.

I

I

I

the 3930. These address

7 A0 O 32

signals are used to control the
3930 that is connected to this

―――――

ID4E

I

connector.

8 D7 O Data signals

9 D6 O 34 MD4 I Mode signal inputs

10 D5 O 35 MD3 I

11 D4 O 36 MD2 I

12 D3 O 37 MD1 I

These data signals are used to
control the internal relays in
the 3930 that is connected to
this connector. The D7 to D0
signals that are input through
the control input connector are
output through these signals

33

―――――

ID4O

I

These signals are the bus for
inputting 3930 status
information. For details on
each signal, refer to "Internal
registers."

as is.

13 D2 O 38

14 D1 O 39

15 D0 O 40

N.C.

－

No connection
Do not connect any lines to

－

these pins.

－

______________________________________________________________________________________________

3.1 Control Signal

22

_____________________________________________________________________________________________

Pin

Signal I/O Function

No.

16

ISO_V

17 42

18

19 44

20 45

21 46

SCV

22 47

23 48

24 49

25 50

Isolation power supply
This power supply (HIGH side)
drives the photocouplers for
internal isolation in the 3930
that is connected to this
connector. 5 to 24 V (DC) is
output between these pins and
ISO_COM.
These pins are connected to
ISO_V in the control input
connector.

Scanner power supply
This is a power supply (HIGH
side) for the 3930 that is
connected to this connector.
24V DC is output between
these pins and SCG.

Pin
No.

41

43

Signal I/O Function

Isolation power supply
This power supply drives the
photocouplers for internal
isolation (LOW side) in the
3930 that is connected to this

ISO_COM

SCG

connector. 5 to 24 V (DC) is
output between these pins and
ISO_V. These pins are
connected to ISO_COM in the
control input connector.

Scanner power supply
This is a power supply (LOW
side) for the 3930 that is
connected to this connector.
24V DC is output between
these pins and SCG.
SCG is connected to the case
ground.

______________________________________________________________________________________________

3.1 Control Signal

_____________________________________________________________________________________________

23

3.2 Control Timing and Signal Levels

Control Timing

A2 to A0

D7 to D0

SCANx

90%

10%

Signal rise time

90%

10%

t

r

t

f

Signal fall time

t

ads

t

spw

t

adh

t

t

drh

drs

Relay Control

A2 to A0

MD4 to MD1

SCANx

Test voltage

Input voltage 0 V

or

SELV*

Relay control

Relay ON

Relay OFF

t

ads

t

dss

t

spw

t

adh

t

dsh

Status Data

t

RON

t

ROFF

*: SELV (separated external low voltage): effective value of 30 V, peak

value of 42.4 V

Test-voltage and Relay control

______________________________________________________________________________________________

3.2 Control Timing and Signal Levels

24

_____________________________________________________________________________________________

Timing table

Symbol Period MAX. MIN.

Signal level

t

t

t

t

t

V

ISO_V

V

ISO_COM

t

Signal rise time 0.5 ms

r

t

Signal fall time 0.5 ms

f

ads

spw

adh

t

drs

t

drh

dss

dsh

t

ron

Address setup time before falling edge of

――――――

SCANx

――――――

SCANx

pulse width

Address hold time after rising edge of

Data setup time until rising edge of

Data hold time after rising edge of

MD settling time after rising edge of

MD hold time after rising edge of

Delay after relay on until test voltage output
starts

t

roff

Delay after high-voltage output is off until relay
off

: ISO_V terminal voltage

: ISO_COM terminal voltage

――――――

SCANx

――――――

SCANx

――――――

SCANx

――――――

SCANx

――――――

SCANx

－

－
－
－
－
－
－
－

－

－
－

0ms

5ms

2ms

0.5 ms

2ms

2ms

0.5 ms

6ms

6ms

Input level (unit: V)

HIGH level V

LOW level V

Output level (unit: V)

HIGH level V

LOW level V

Maximum Minimum

ISO_V

ISO_V

+ 1.0

- 4.0

V

V

ISO_V

ISO_COM

- 1.5

Maximum Minimum

- 0.5

ISO_V

ISO_COM

+ 0.5

V

ISO_V

V

ISO_COM

- 0.5

- 0.5

______________________________________________________________________________________________

3.2 Control Timing and Signal Levels

_____________________________________________________________________________________________

25

3.3 Internal Register

Normal control is not possible if one of the multiple 3930s that is connected
detects an ID error.

R/W: R (read only), W (write only)

A2 A1 A0 R/W Function

0 0 0 W Relay control

0 0 1

0 1 0

0 1 1

1 0 0 R Status

1 0 1

1 1 0

1 1 1

－
－
－

－
－
－

Reserved (not used)

Reserved (not used)

Reserved (not used)

Reserved (not used)

Reserved (not used)

Reserved (not used)

Relay Control Address

Address R/W D7 D6 D5 D4 D3 D2 D1 D0

$0 W CH8 CH7 CH6 CH5 CH4 CH3 CH2 CH1

The status of each signal line (D7 to D0) at the rising edge of the scanner
control signal (

―――――――

SCANx

) is reflected in the relays.

(HIGH: relay on; LOW: relay off)

Status Reading Address

Address R/W MD4 MD3 MD2 MD1

$4 R

－

S/

――

M

－

―――――

MDE

Valid data is output on each signal line (MD4 to MD1) while the scanner
control signal (

――

S/

: S/M: Indicates the mode that is set.

M

―――――

: LOW indicates that a mode error occurred.

MDE

______________________________________________________________________________________________

―――――――

SCANx

)islow.

(HIGH: single mode; LOW: multi-mode)

3.3 Internal Register

26

_____________________________________________________________________________________________

3.4 Control Method

3.4.1 When Connected to a 3153 AUTOMATIC
INSULATION/WITHSTANDING HiTESTER

The scanner settings are made through the 3153's program function. For
details on the program function, refer to the operation manual for the 3153
AUTOMATIC INSULATION/WITHSTANDING HiTESTER.

______________________________________________________________________________________________

3.4 Control Method

_____________________________________________________________________________________________

27

3.4.2 When Connected to a Device Other Than the 3153
AUTOMATIC INSULATION/WITHSTANDING HiTESTER

In capacitance load testing, etc., an electric charge may still exist

WARNING

even if the voltage on the high-voltage cord is cut off. Be aware of
the possible danger of an electric shock.
In order to avoid damage to the relays (formation of deposits, etc.), do
not turn the relays on or off while voltage is being applied to the high­voltage input cord. This is not a problem when using the 3153
AUTOMATIC INSULATION/WITHSTANDING HiTESTER, because that
unit is equipped with a discharge function.
In order to avoid electric shock, allow at least 6ms to elapse after
turning on a relay before applying voltage to the high-voltage input
cord.
The relays used in the 3930 require approximately 6 ms for the
contact to completely close or open. When stopping a test, cut off
the voltage and allow the test terminal voltage to reach the SELV*
before turning a relay off. If a relay is turned on or off while high­voltage current is flowing through it, deposits may form on the relay,
ultimately allowing voltage to be output from an unexpected source.

*: SELV (separated external low voltage): effective value of 30 V, peak

valueof42.4V

Carefully read Chapter 2, "Test Preparation," before connecting the 3930 to
the master unit and to the device to be tested. Once all connections are
made, the 3930 is controlled through the timing of the address lines, the data
lines, and the scanner control signals.

1. Load the 3930 status information (address $4), and confirm that there is

no mode error or ID error, and that the mode is set correctly.
If a mode error or an ID error is detected, stop testing and correct the
cause of the error.

2. With no voltage applied to the 3930's high-voltage input cord, the data

lines and the scanner control signals are used according to the prescribed
timing to turn on the relay for the channel from which output is desired.
When the relay turns on, the front LED lights.
(High-voltage output: red; COM connection: green)

3. Apply voltage to the 3930's high-voltage input cord and begin testing.

The voltage that is applied to the high-voltage input cord is output on the
specified channel through the relay that turned on.

4. Cut off the voltage that was applied to the 3930's high-voltage input cord

and end the test.

5. With no voltage applied to the 3930's high-voltage input cord, the data

lines and the scanner control signals are used according to the prescribed
timing to control the relay for the next test.

6. Repeat steps 2 through 5 until the series of tests is completed.

______________________________________________________________________________________________

3.4 Control Method

28

_____________________________________________________________________________________________

______________________________________________________________________________________________

3.4 Control Method

_____________________________________________________________________________________________

29

Chapter 4

Specifications

(1) Function

Operation mode Multi/ Single mode

Mode setting method External switch

Number of channels Multi mode: HIGH/LOW each 4 channels

Single mode: HIGH 8channels - COM

Rated voltage for use AC/DC 5 kV (rms)

Dielectric strength 10 kVAC, 10 mA, 1 minute between high voltage

terminal and frame

Operation display Lamp lights when power is supplied

Lamp lights for specified channel operation

Control method General control

(2) Relay

Maximum open/close
voltage

Maximum open/close
current

Contact resistance
between contact points

Maximum contact
capacitance

Operation time 6msorless

Recovery time 6msorless

DC 5000 V/ AC 5000 V (rms)

1A

500 mΩ or less (when 1 mA of current is flowing)

50 W

(3) Control Signal

Digital control signal
level

Input signal level

HIGH

LOW

Output signal level

HIGH

LOW

______________________________________________________________________________________________

The isolation power supply (between ISO_V ­ISO_COM) for determining the signal level is input
from an external source. V

can be selected in a

ISO_V

range from 5 to 24 V.

Max.: V
Max.: V

Max.: V
Max.: V

+ 1 (V), Min.: V

ISO_V

- 4.0 (V), Min.: V

ISO_V

(V), Min.: V

ISO_V

ISO_COM

+ 0.5 (V), Min.: V

ISO_V

- 1.5 (V)

ISO_V

ISO_COM

- 0.5 (V)

ISO_COM

- 0.5 (V)

- 0.5 (V)

30

_____________________________________________________________________________________________

(4) Accuracy

Operating temperature and humidity for guaranteed accuracy:
23

, 80%RH or less
Stipulations for leak current when voltage is applied
For both AC and DC, in single mode, without the 9615-01 or 9615-02 H.V.
TEST LEAD, and all output relays on:
When DC is applied (1000V): 0.1 μA/unit or less
When AC is applied (5 kV, 50 Hz, 60 Hz): 0.4 mA/unit or less
*: Subject to change according to the state of the 9615-01 or 9615-02 H.V.

TEST LEAD

(5) General Specifications

Operating temperature
and humidity

Storage temperature
and humidity

Operating Environment Indoors, max. 2000 m (6562 feet) height

Power supply V

Maximum rated power 12 VA

Calibration cycle 1 year

Accessories Control input connector connection cable

Dimensions Approx. 316W X 100H X 350D mm (12.44"W X 3.94"H

Mass Approx. 4.2 kg (148.1 oz.)

Standard Applying

Safety

0to40 (32 to 104 ), 80% RH or less (no
condensation)

-10 to 50 (14 to 122 ), 90% RH or less (no
condensation)

DC24 V (input: control input connector)

SCV

(a change in voltage of

9615-01 H.V. TEST LEAD (HIGH side) X 8
9615-02 H.V. TEST LEAD (LOW side) X 1
Grounding cable
Instruction manual

X 13.78"D) (excluding projections)

EMC

EN61326 Class A
EN61010
Power supply: Pollution Degree 2
(anticipated transient overvoltage 330 V)

10% taken into consideration)

Product warranty
period

______________________________________________________________________________________________

3years

_____________________________________________________________________________________________

31

Chapter 5

Maintenance and Service

5.1 Maintenance and Inspection

To ensure the safe operation of this unit, perform maintenance regularly.

・Be sure to read assiduously the various items highlighted in this manual

for attention, in order to use the unit correctly.

・If the unit has been subject to moisture, or if oil and dust have

accumulated in the unit interior, the danger of electrical shock or fires
resulting from the deterioration of insulation increases greatly. If the unit
is ever subject to excessive moisture, oil, or dust, cease use immediately,
and return the unit to us for maintenance.

・Spare and replacement parts for this product are guaranteed to be available

only until 5 years after manufacture of this model is terminated.

If damage is suspected, check the "Troubleshooting" section before
contacting your dealer or Hioki representative.

Symptom What to check and Solution

・

Power does not
come on

LED is dark or
flashes

Unit is not
controlled as
expected

Is the control input connector connected correctly?

・

Is the master unit power on?

・

Is the correct power supply voltage being used?

・

Is the power supply connected?

Is the current capacity of the SCV power supply
adequate?

・

Is the ISO_V power supply connected correctly?

・

Is the control signal level correct?

・

Is the scanner control signal with the same ID number
being used?

・

Is the control timing correct?

・

Is the control connector connected correctly?

・

No voltage is output

______________________________________________________________________________________________

Is the high-voltage input cord connected?

・

Did a mode error occur?

5.1 Maintenance and Inspection

32

_____________________________________________________________________________________________

5.2 Cleaning

To clean the product, wipe it gently with a soft cloth moistened with water
or mild detergent. Never use solvents such as benzene, alcohol, acetone,
ether, ketones, thinners or gasoline, as they can deform and discolor the
case.

______________________________________________________________________________________________

5.2 Cleaning