Hioki DT4261 Bedienungsanleitung

EV Maintenance Manual

EV MAINTENANCE

TEST TOOL

Dec. 2023 Revised edition 1

C0213A961-01

Read carefully before use.

Keep for future reference.

When using the instrument for

the rst time Contents

Safety Information p.8

Verifying That There Is No Voltage

p.18

Precautions for Use p.9 Performing Equipotential Bonding

Testing p.24

Preparing for Measurement

(IR4059, RM3548) p.10 Performing Insulation Resistance

Testing

p.27

[600653781]

HIOKI C0213A961-01

Introduction

Thank you for choosing Hioki’s EV Maintenance Test Tool. To ensure your ability to

make full use of the product, please handle this documentation carefully and store it

for future reference.

The following documentations are available for reference:

Document Contents

DT4261 Digital Multimeter

Instruction Manual

Provides detailed information, including instructions

on how to use the instrument in question as well as

descriptions of its functionality and specications.

For more information about each instrument,

please refer to its Instruction Manual.

FT3701-20 Infrared

Thermometer

Instruction Manual

IR4059 Insulation Tester

Instruction Manual

RM3548 Resistance Meter

Instruction Manual

EV Maintenance Manual

(this document)

Provides information about EV maintenance

methods and information to ensure safe use of

each instrument.

The latest edition of the instruction manual

The information in this manual is subject to change for reasons such

as product improvements or specication changes.

The latest edition can be downloaded from Hioki’s website.

https://www.hioki.com/global/support/download/

Target audience

This manual has been written for use by individuals who use the product or provide

information about how to use the product.

Work that involves handling high-voltage components should be performed only by

qualied personnel who have received specialized training.

Checking Package Contents

When you receive the product, inspect it for damage or other issues prior to use. If

you nd any damage or discover that the product does not perform as indicated in its

specications, please contact your authorized Hioki distributor or reseller.

C0213 Carrying Case

C0213A961-01

HIOKI C0213A961-01

Options

This section includes only principal products.

For more information about instrument options, please review the applicable

Instruction Manual. If you wish to purchase an option, please contact your authorized

Hioki distributor or reseller.

Optional equipment is subject to change with no advance notice. Check Hioki’s

website for the latest information.

Model Name Appearance

DT4261 Digital Multimeter

FT3701-20 Infrared Thermometer

IR4059 Insulation Tester

Z5042 Protecter

Z3210 Wireless Adapter (for IR4059)

Z5020 Magnetic Strap

RM3548 Resistance Meter

9465-11 Pin Type Lead

Z5041 Protector

HIOKI C0213A961-01

Overview

The voltages present in electric vehicles (EVs) are rising, necessitating

caution with regard to numerous aspects of maintenance and inspection

work.

The EV Maintenance Test Tool can be used to safely carry out necessary

electrical tests from the time the high-voltage bus is disconnected to its

restoration.

For more information about disconnecting and restoring an EV’s high-voltage

bus and related safety precautions, please consult the service manual from

the vehicle’s manufacturer or contact the vehicle’s manufacturer.

HIOKI C0213A961-01

EV Maintenance Flow (example)

Prepare for work

Attach the strap to instrument (p. 10)

Visually check the vehicle

Scan for DTCs

Disconnect the high-voltage bus

FT3701-20

Check the temperature of the traction

battery (p. 13)

Verify absence of any voltage

(DC voltage measurement)

DT4261

(p. 18)

Disconnect the high-voltage bus

cables from the vehicle

Wait for any residual charge to

discharge

DT4261

Verify absence of any voltage

(DC voltage measurement) (p. 20)

Complete disconnection of the high-

voltage bus

Repair and inspect the vehicle

HIOKI C0213A961-01

EV Maintenance Flow (example)

Perform equipotential bonding test

(low-resistance measurement)

RM3548

(p. 24)

Perform insulation resistance test

(insulation resistance measurement)

IR4059

(p. 27)

Verify absence of any voltage

(DC voltage measurement)

DT4261

(p. 22)

Restore the high voltage

Complete work

HIOKI C0213A961-01

Symbols and Abbreviations

Safety notations

This manual classies seriousness of risks and hazard levels as described

below.

DANGER Indicates an imminently hazardous situation that, if not

avoided, will result in death or serious injury.

WARNING Indicates a potentially hazardous situation that, if not

avoided, could result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation that, if not

avoided, could result in minor or moderate injury or potential

risks of damage to the supported product (or to other

property).

Indicates a high-voltage hazard.

Failure to verify safety or improper handling of the

instruments could lead to an electric shock, a burn, an

injury, or a death.

Indicates a prohibited action.

Indicates a mandatory action.

Other notations

Indicates useful functions and advice you should know.

Safety Information

Before using any of the instruments described in this manual, review its

Instruction Manual and the service manual published by the vehicle’s

manufacturer.

Work that involves handling high-voltage components should be performed

only by qualied personnel who have received specialized training.

HIOKI C0213A961-01

Precautions for Use

To ensure you can safely use the instrument and fully utilize its functionality,

be sure to observe the following precautions:

Checking safety before use

Inspect the instrument prior to use to ensure there are no faults or damage

and verify proper operation. If you nd any damage, contact your Hioki

distributor.

HIOKI C0213A961-01

Preparing for Measurement (IR4059, RM3548)

Preparing for Measurement (IR4059,

RM3548)

If hanging the instrument from your neck

You can attach the neck strap to an instrument so that you can hang it from

your neck. The strap can be attached as follows: (The strap attaches at four

points.)

RM3548

IR4059

HIOKI C0213A961-01

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