Hioki IR4055, IR4056-21, IR4055-11, IR4057, IR4058 Instruction Manual

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Contents

1

2

3

4

5

6

7

Appx.

索引

Introduction .........................................................................1

Verifying Package Contents ..............................................1

Safety Information .............................................................. 3

Operating Precautions ....................................................... 8

1 Overview 13

1.1 Product Overview .......................................... 13

1.2 Names and Functions of Parts ....................14

2 Preparing for Measurement 21

2.1 Replacing Batteries or Fuse ......................... 22

2.2 Using the Model L9788-10 Test Lead

with Remote Switch (Red) ............................ 25

3 Measurement 27

3.1 Pre-measurement Inspection ....................... 27

3.2 Auto Power Save

(Power-Saving Function) .............................. 28

3.3 Auto Backlight-off

(Automatic Light-off Function) ....................28

3.4 Comparator Function .................................... 29

Setting the Comparator ............................................. 30

Canceling the Comparator ........................................ 31

3.5 Insulation Resistance Measurement ........... 32

Lock Function ...........................................................33

Measuring Insulation Resistance .............................. 34

Displaying 1-minute Values

(Model IR4057, IR4058) ...........................................35

Voltage Characteristics of Measurement Terminals

.... 36

IR4058A961-02

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Contents

3.6 Discharging Function ...................................37

3.7 Voltage Measurement ................................... 38

Negative Voltage Notication Function

(Model IR4055) ......................................................... 39

3.8 Low Resistance Measurement

(Model IR4056, IR4057, IR4058) .................... 40

3.9 PV

3.10 Bluetooth

Measurement Function

Ω

(Model IR4055) ............................................... 42

Installing the Smartphone App GENNECT Cross .....50

Pairing the App ......................................................... 51

Making Measurements with the Bluetooth® Function

®

Communication Function ..........49

.. 52

4 Specications 53

4.1 StandardSpecications ...............................53

4.2 GeneralSpecications .................................54

4.3 Measurement functions ................................ 57

4.4 PV

4.5 ExternalInterfaceSpecications

Measurement (Model IR4055) .............. 63

Ω

(Model IR4055, IR4058) .................................64

5 Maintenance and Service 65

5.1 Troubleshooting ............................................66

Error Displays and Remedies ................................... 70

Appendix Appx.1

Appx. 1 Measurement Principles .................. Appx.1

Appx. 2 Operation Uncertainty ...................... Appx.2

Appx. 3 Insulation Resistance Measurements

for Solar Cell Array ...........................Appx.3

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Introduction

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7

付録索引

Introduction

Thank you for purchasing the Hioki IR4055-11, IR4056-20,
IR4056-21, IR4057-20, IR4058-20 Insulation Tester. To obtain
maximum performance from the instrument, please read this

Instruction Manual rst, and keep it handy for future reference.
Hereinafter, the descriptions refer to models without the sufx.

Verifying Package Contents

When you receive the instrument, inspect it carefully to ensure that no
damage occurred during shipping. In particular, check the accessories,
panel switches, and connectors. If damage is evident, or if it fails to

operate according to the specications, contact your authorized Hioki
distributor or reseller. Conrm that these contents are provided.

□ Insulation Tester

IR4055, IR4056 IR4057, IR4058

□ Instruction Manual

□ LR6 Alkaline battery × 4

□ Model L9787 Test Lead*

(Only for the instruments with sufx

“-20”)

□ Model L9788-11 Test Lead Set with

Remote Switch*

(Only for the instruments with sufx “-11”

and “-21”)

□ Neck strap

* Model L9787 and L9788-11 are all exclusively designed for the Hioki IR4000

series. Do not use for any other purpose.

1

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Verifying Package Contents

9243 graber

L4937 マグネットアダプ
タ

L4934 小ワニグチ

マグネ付ストラップ

DM4910 熱電対

DT4911TestLead

DT4912TestLead

L4930 接続ケーブル

9243 graber

L4937 マグネットアダプ
タ

L4934 小ワニグチ

マグネ付ストラップ

L9207-10

DM4910 熱電対

DT4911TestLead

DT4912TestLead

L4930 接続ケーブル

L4931renketu

L4931 延長ケーブル

L4932(+9207-10cap)

L4933 コンタクトピン

L4935 ワニ口

L4937 マグネットアダプ

9243 graber

L4937 マグネットアダプ
タ

L4934 小ワニグチ

マグネ付ストラップ

DM4910 熱電対

DT4911TestLead

DT4912TestLead

L4930 接続ケーブル

9243 graber

L4937 マグネットアダプ
タ

L4934 小ワニグチ

マグネ付ストラップ

L9207-10

DM4910 熱電対

DT4911TestLead

DT4912TestLead

L4930 接続ケーブル

L4931renketu

L4931 延長ケーブル

L4932(+9207-10cap)

L4933 コンタクトピン

L4935 ワニ口

Options

The following options are available for the IR4000 series. Contact

your authorized Hioki distributor or reseller when ordering.

*

1

2

*

3

*

5

6

7

* Refer to p. 1

4

Model

Model L9788-11* Test Lead Set

1

with Remote Switch

Model 9804-02 Magnet Adapter
(φ11 mm, standard screw: M6 pan

2

head screw)

Model L9787* Test Lead (1.2 m) CAT III 600 V/CAT II 600 V, 10 A

3

Model L9787-91 Breaker Pin CAT III 600 V, 10 A

4

Model L9788-10* Test Lead with

5

Remote Switch (Red)

Model L9788-92 Breaker Pin CAT III 600 V, 2 A

6

Model L9788-90 Tip Pin CAT III 600 V/CAT II 600 V, 2 A

7

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Maximum rated voltage and

maximum rated current

CAT III 600 V/CAT II 600 V, 2 A

CAT IV 1000 V, 2 A

CAT III 600 V/CAT II 600 V, 2 A

Safety Information

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付録索引

Safety Information

This instrument is designed to conform to IEC 61010 Safety
Standards, and has been thoroughly tested for safety prior to
shipment. However, using the instrument in a way not described in
this manual may negate the provided safety features.
Before using the instrument, be certain to carefully read the following
safety notes:

DANGER

Mishandling during use could result in injury or death,
as well as damage to the instrument. Be certain that
you understand the instructions and precautions in
the manual before use.

WARNING

Protective gear
This instrument measures live lines. To prevent
electric shock, use appropriate protective insulation
and adhere to applicable laws and regulations.

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Safety Information

Notation

In this document, the risk seriousness and the hazard levels are
classied as follows.

DANGER

WARNING

CAUTION

Indicates an imminently hazardous situation that will

result in death or serious injury to the operator.

Indicates a potentially hazardous situation that may

result in death or serious injury to the operator.

Indicates a potentially hazardous situation that may

result in minor or moderate injury to the operator or
damage to the instrument or malfunction.

Indicates a strong magnetic- eld hazard.

The effects of the magnetic force can cause
abnormal operation of heart pacemakers and/or
medical electronics.

Indicates prohibited actions.

Indicates the action which must be performed.

*

Additional information is presented below.

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Symbols on the instrument

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付録索引

Indicates cautions and

hazards. When the symbol

is printed on the instrument,
refer to a corresponding
topic in the Instruction
Manual.

Indicates that dangerous
voltage may be present at
this terminal.

Indicates a instrument
that has been protected
throughout by double
insulation or reinforced
insulation.

Symbols for various standards

Indicates the Waste Electrical and Electronic Equipment
Directive (WEEE Directive) in EU member states.

Indicates that the product conforms to regulations set out by the
EU Directive.

Indicates that the product incorporates Bluetooth® wireless
technology.

Safety Information

Indicates a grounding
terminal.

Indicates DC (Direct
Current).

Indicates AC
(Alternating Current).

Do not use in distribution
systems with voltage
higher than 660 V AC.

Screen Display

The instrument screen displays the alphanumeric characters as follows.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

1 2 3 4 5 6 7 8 9 0

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Safety Information

Accuracy

We dene measurement tolerances in terms of rdg. (reading) and

dgt. (digit) values, with the following meanings:

(reading or displayed value)

rdg.

The value currently being measured and indicated on the
measuring instrument.

(resolution)
The smallest displayable unit on a digital measuring instrument,

dgt.

i.e., the input value that causes the digital display to show a "1" as

the least-signicant digit.

Trademarks

• Bluetooth® is a registered trademark of Bluetooth SIG, Inc. (USA).
The trademark is used by HIOKI E.E. CORPORATION under
license.

• Android and Google Play are trademarks of Google, Inc.

• IOS is a registered trademark of Cisco in the U.S. and other
countries.

• iPhone, iPad, iPad mini, iPad Pro, and iPod Touch are trademarks
of Apple Inc.

• The App Store is a service mark of Apple Inc.

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Safety Information

1

2

3

4

5

6

7

付録索引

Measurement Categories

To ensure safe operation of measuring instruments, IEC 61010
establishes safety standards for various electrical environments,

categorized as CAT II to CAT IV, and called measurement categories.

DANGER

• Using a measuring instrument in an environment
designated with a higher-numbered category than
that for which the instrument is rated could result in
a severe accident, and must be carefully avoided.

• Never use a measuring instrument that lacks
category labeling in a CAT II to CAT IV measurement
environment. Doing so could result in a serious
accident.

This instrument conforms to the safety requirements for CAT III 600 V
measuring instruments.

CAT II: When directly measuring the electrical outlet receptacles of the

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

CAT III: When measuring the primary electrical circuits of heavy equipment

(xed installations) connected directly to the distribution panel, and

feeders from the distribution panel to outlets.

CAT IV:

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

Distribution panel

Service entrance

Service drop

CAT IV

Power meter

Internal wiring

CAT III

Fixed installation

CAT II

T

Outlet

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Operating Precautions

Operating Precautions

Follow these precautions to ensure safe operation and to obtain the

full benets of the various functions.

DANGER

• For your safe operation, do not connect any test
lead to the primary of the distribution panel.

• Do not short-circuit two wires to be measured by
bringing the test leads into contact with them. Arcs
or such graveaccidents are likely to occur.

• To avoid short circuit or electric shock, do not touch
the metal part of the connecting test lead tip.

• To avoid electric shock, be careful to avoid shorting
live lines with the test leads tip.

• If the test lead or the instrument is damaged, there
is a risk of electric shock. Perform the following
inspection before using them:

• Before using the instrument check that the coating
of the test leads are neither ripped nor torn and that
no metal parts are exposed. Using the instrument
under such conditions could result in electric

shock. Replace the test leads with those specied

by our company.

• Verify that the instrument operates normally to
ensure that no damage occurred during storage

or shipping. If you nd any damage, contact your

authorized Hioki distributor or reseller.

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Operating Precautions

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付録索引

WARNING

• To avoid electric shock, short circuits and
damage to the instrument, observe the following
precautions:
Check the position of the rotary switch before
taking measurements. Disconnect the test leads
from the measurement object before switching the
rotary switch.

• Do not use the instrument with circuits that exceed

its ratings or specications. Doing so may damage

the instrument, resulting in electric shock.

• Use only the specied test leads. Use of any test

lead not specied by our company does not allow

safe measurements.

• To avoid electrical accidents, remove power from
the circuit before connecting the test leads.

• To avoid electric shock, do not exceed the lower of
the ratings shown on the instrument and test leads.

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Operating Precautions

CAUTION

• The cable is hardened under the 0°C or colder
environment. Do not bend or pull it to avoid tearing its
shield or cutting cable.

• The protection rating for the enclosure of this device
(based on EN60529) is IP40*.

* IP40:
This indicates the degree of protection provided by the enclosure of

the device against use in hazardous locations, entry of solid foreign

objects, and the ingress of water.

4: Protected against access to hazardous parts with wire measuring 1.0 mm

in diameter.

0: The equipment inside the enclosure is not protected against the harmful

effects of water.

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Installing the instrument

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付録索引

Installing the instrument in inappropriate locations
may cause a malfunction of instrument or may give
rise to an accident. Avoid the following locations.

• Exposed to direct sunlight or high temperature

• Exposed to corrosive or combustible gases

• Exposed to a strong electromagnetic eld or
electrostatic charge

• Near induction heating systems (such as high-
frequency induction heating systems and IH
cooking equipment)

• Susceptible to vibration

• Exposed to water, oil, chemicals, or solvents

• Exposed to high humidity or condensation

• Exposed to high quantities of dust particles

Do not place the instrument on an unstable table or an
inclined place. Dropping or knocking down the instrument
can cause injury or damage to the instrument.

Operating Precautions

WARNING

CAUTION

Precautions when transporting the instrument

During shipment of the instrument, handle it carefully so that it is not
damaged due to a vibration or shock.

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Operating Precautions

Handling the Instrument

Persons wearing electronic medical devices such as
apacemaker should not use model 9804-02 Magnet
Adapter. Such persons should avoid even proximity
to model 9804-02, as it may be dangerous. Medical
device operation could be compromised, presenting a
hazard to human life.

To avoid damage to the instrument, protect it from physical
shock when transporting and handling. Be especially
careful to avoid physical shock from dropping.

Test leads

• Removable sleeves are attached to the metal pins
at the end of the test leads. To prevent a short circuit
accident, be sure to use the test leads with the sleeves
attached when performing measurements in the CAT
III measurement category. Remove the sleeves before
starting CAT II measurements. You can use the test
leads with the sleeve removed for primary side of
the circuit breakers turned off. (See “Measurement
Categories” (p. 7))

• If the sleeves are inadvertently removed during

measurement, stop the measurement. (p. 1)

DANGER

CAUTION

CAUTION

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1 Overview

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付録索引

Overview

1

1.1 Product Overview

This instrument is an insulation ohmmeter that shortens work times
associated with insulation testing. It is not designed for use on
manufacturing lines and should not be used in such applications.
For manufacturing line applications, use the model ST5520
Insulation Tester.

High-speed response

• Considerably improved response time compared to previous models.

• The instrument can be used like models with a meter needle.

Enhanced comparator function

• Can be used similarly to the continuity check with a tester due to judgment
after the start of measurement being extremely short.

• The backlight lights up in red for a FAIL judgment (defective).

Low variation in measured values

• The instrument generates little variation in measured values when used in a
typical measuring environment.

Easy-to-view display

• Backlight source is a white high-intensity LED.

• Wide viewing angle LCD

High-accuracy voltage measurement function

• The instrument incorporates a DC/AC voltmeter with the same accuracy as
a card tester.

• There is no need to switch to a card tester when you need to measure
voltage.

PVΩ measurement function (Model IR4055)

• Insulation resistance can be measured accurately for solar battery panel.

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Names and Functions of Parts

1.2 Names and Functions of Parts

Front

IR4056, IR4057, IR4058

(p. 19, p. 22,

p. 32, p. 38)

1

(The gure below is model IR4058)

Display

Top

32

4

(p. 8)

1065 97 8

MEASURE key (p. 16) Starts insulation resistance measurement.

1

Earth terminal Connects the black test lead.

2

Control terminal

3

Line terminal Connects the red test lead.

4

Rotary switch Selects measurement functions.

5

LIGHT key

6

0Ω ADJ key

7

Live circuit indicator

8

Controls model L9788-10 Test Lead with
Remote Switch (Red)

Turns on and off the light.

Performs zero-adjustment for the low
resistance range.

Lights up when voltage remains between
input terminals.

14

(p. 8)

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Names and Functions of Parts

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付録索引

COMP key

9

Bluetooth key

RELEASE key

10

IR4055

500 V↔1000 V key

1

500 V/1000 V

2

RELEASE key

Sets the comparator’s judgment reference
value.

Sets the Bluetooth

(IR4055, IR4058)

Press before measurement to set the instrument
to the 500 V or 1000 V range (to prevent
erroneous application of the test signal).

1 2

Switches between 500 V and 1000 V when using
PV

range.

Ω

• Press before measurement to set the instrument
to the 500 V or 1000 V range (to prevent
erroneous application of the test signal).

• Applied voltage is conrmed when PVΩ range
is set.

®

(p. 49)

(Other functions are the same as

IR4056, IR4057, and IR4058.)

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Names and Functions of Parts

MEASURE key

MEASURE key

states

*

Pull

Description in
this manual

*: Convenient way for performing measurement repeatedly

Turn on the MEASURE key.

Press the right

portion

Power OFF

Rotary switch
state

Release

Turn off the

MEASURE key.

Description in
this manual

16

Turn off the rotary

switch.

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Display

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付録索引

IR4057, IR4058

Battery indicator (three levels) (p. 27)

Turns on when the voltage measured with the V range is DC.

Turns on when the voltage measured with the V range is AC.

Blinks when the measured value is less than the minimum display
value.

Blinks when the measured value is greater than the maximum
display value.

Turns on when the measured value is retained.

Turns on when the comparator judgment is PASS (good). (p. 29)

Turns on when the comparator judgment is FAIL (defective).

(p. 29)

Blinks when a dangerous voltage exists between the
measurement terminals.

Judgment result buzzer (only when comparator is set) (p. 29)

The auto power save function will activate 30 seconds after this

mark starts turning on. (p. 28)

Turns on when zero adjustment is made during low resistance

measurement. (p. 40)

Names and Functions of Parts

(The gure below is model IR4058)

Bar graph

Measured value

Comparator judgment
reference value or 1-minute
value

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Names and Functions of Parts

Displaying 1-minute values (p. 35)

• Turns on when 1 minute has passed since the start of insulation
resistance measurement.

• Indicates that the resistance value on the bottom of the display
is a 1-minute value (the measured value 1 minute after the start
of measurement).

Turns on when the comparator function is enabled. (p. 29)

Turns on when the instrument is set to the 500 V range or the
1000 V range.

Pressing

measurement.

Displays Bluetooth® function state.

• Bluetooth

• Bluetooth

• Bluetooth

turns off the indicator and enables insulation

®

function ON: Turns on

®

function OFF: Turns off

®

Communicating: Blinks

IR4056

Turns on when the reference value is indicated by the
comparator function.

Measured value
or comparator reference value

(Other functions are the same as

IR4057 and IR4058.)

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IR4055

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付録索引

Names and Functions of Parts

Measured value
or comparator reference value

(Other functions are the same as

IR4056, IR4057, and IR4058.)

Turns on when PVΩ measurement mode is selected.

Turns on when selecting 500 V range in the PVΩ measurement
mode.

Turns on when selecting 1000 V range in the PVΩ measurement
mode.

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Names and Functions of Parts

Model L9788-10 Test Lead with Remote Switch (Red)

CAUTION

The MEASURE key of the instrument is enabled even

when the L9788-10 is connected to an insulation

resistance tester. Note that the testing voltage is output
when the MEASURE key of the instrument is turned ON

while the L9788-10 is connected.

Refer to “Attaching the L9788-92 Breaker Pin” (p. 26)

Sleeve

Enlarged tip view

35

16

1 2 3

Plug

1.8

φ

Light

1

MEASURE key

2

Judgment display

3

20

3.0

φ

Unit: mm

Lights up interlocked with the backlight of the
instrument.

• Starts insulation resistance measurement.

• Lights up in red interlocked with the live wire
warning indicator of the instrument.

Lights up in accordance with the comparator
judgment result.

• PASS: Green

• FAIL: Red

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