Hioki DT4261 Bedienungsanleitung
EV Maintenance Manual
EV MAINTENANCE
TEST TOOL
EN
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]
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Introduction
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 specications.
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 specication 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
qualied 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
specications, please contact your authorized Hioki distributor or reseller.
C0213 Carrying Case
C0213A961-01
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Options
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
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Overview
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.
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EV Maintenance Flow (example)
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
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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
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Symbols and Abbreviations
Symbols and Abbreviations
Safety notations
This manual classies 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 qualied personnel who have received specialized training.
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Precautions for Use
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.
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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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