Hioki 3551 User manual

INSTRUCTION MANUAL
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3551
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BATTERY HiTESTER

Contents
Introduction i
Inspection i
Safety ii
Precautions v
Organization of this Manual viii
Chapter 1 Overview 1
1.1 Product Overview 1
1.2 Features 2
Chapter 2 Names and Functions of Parts 3
Chapter 3 Specifications 11
3.1 General Specification 11
3.2 Measurement Range 15
3.2.1 Maximum Input Voltage 17
3.2.2 Dielectric Strength 18
Chapter 4 Standard Measurement 19
4.1 Preparing for Measurement 19
4.1.1 Replacing the Batteries 19
4.1.2 Connecting the 9418-10 AC ADAPTER 21
4.1.3 Connecting the Test Lead and
Remote Control Switch 23
4.2 Measurement Batteries 24
4.2.1 Notes On Measurement 24
4.2.2 Measurement 26
Chapter 5 Advanced Measurement Functions 31
5.1 Comparator Function 31
5.1.1 What is the Comparator Function? 31

5.1.2 Comparator Settings 32
5.1.3 Comparator Decision Result Table 37
5.1.4 Switching the Comparator On and Off 38
5.1.5 Changing the Comparator Number 39
5.2 Measurement Value Memory Function 40
5.2.1 Memory 40
5.2.2 Overwrite 42
5.2.3 Clear 43
5.2.4 Readout 44
5.2.5 Printing 45
5.3 Beeper On/Off Function 47
5.4 Hold Function 47
5.5 Moving Average Function 49
5.6 Zero Adjust Function 51
5.6.1 9465 Zero Adjustment 51
5.6.2 9460 Zero Adjustment 53
5.7 Battery Low Warning 54
5.8 Auto Power Off 55
5.9 Circuit Configuration between EXT.HOLD
and EXT.MEMO 57
5.10 Reset 57
5.11 AC Four-Terminal Method 59
5.12 Internal Resistance of Lead Storage
Batteries 61
Chapter 6 Maintenance 63
6.1 Troubleshooting 63
6.2 Message Reference 65
6.3 Cleaning 66

i
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Inspection
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I
ntroduction
I
nspection
Thank you for purchasing the HIOKI "3551 BATTERY
HiTESTER." To obtain maximum performance from the
instrument, please read this manual first, and keep it
handy for future reference.
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 specifications, contact your dealer or
Hioki representative.
Accessories
9465 PIN TYPE LEAD
9466 REMOTE CONTROL SWITCH
Spiral tubes large (4), small (2)
9377 CARRYING CASE
Zero adjustment board
Six LR6 alkaline batteries
Instruction Manual
Dust cover (for the printer interface)
Shipping
Use the original packing materials when reshipping the
instrument, if possible.

ii
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Safety
――――――――――――――――――――――――――――――――――
DANGE
R
This instrument is designed to comply with IEC 61010
Safety Standards, and 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 instrument. 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
instrument defects.
･The symbol printed on the instrument
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 instrument.
Indicates DC (Direct Current).
Indicates the ON side of the power switch.
Indicates the OFF side of the power switch.
S
afety
Safety symbols
This manual contains information and warnings essential
for safe operation of the instrument and for maintaining
it in safe operating condition. Before using the
instrument, be sure to carefully read the following safety
notes.

iii
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Safety
――――――――――――――――――――――――――――――――――
DANGE
R
Indicates that incorrect operation presents an
extreme hazard that could result in serious
injury or death to the user.
WARNIN
G
Indicates that incorrect operation presents a
significant hazard that could result in serious
injury or death to the user.
CAUTIO
N
Indicates that incorrect operation presents a
possibility of injury to the user or damage to the
instrument.
NOTE Indicates advisory items related to performance
or correct operation of the instrument.
The following symbols in this manual indicate the relative
importance of cautions and warnings.

iv
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Safety
――――――――――――――――――――――――――――――――――
Measurement categories (Overvoltage categories)
This instrument complies with CAT I safety requirements.
To ensure safe operation of measurement instruments, IEC
61010 establishes safety standards for various electrical
environments, categorized as CAT I to CAT IV, and called
measurement categories. These are defined as follows.
CAT I : Secondary electrical circuits connected to an AC
electrical outlet through a transformer or similar
device.
CAT II : Primary electrical circuits in equipment connected
to an AC electrical outlet by a power cord (portable
tools, household appliances, etc.)
CAT III: Primary electrical circuits of heavy equipment
(fixed installations) connected directly to the
distribution panel, and feeders from the
distribution panel to outlets.
CAT IV: 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 device designed for CAT III environments can
endure greater momentary energy than a device designed
for CAT II.
Using a measurement 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 CAT I measuring instrument in CAT II, III, or
IV environments.
The measurement categories comply with the Overvoltage
Categories of the IEC60664 Standards.

v
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Precautions
――――――――――――――――――――――――――――――――――
DANGE
R
When voltages higher than 30 Vrms, 42.4 Vpeak or
battery circuits with more than 60 VDC are to be
measured, be sure to establish the floating state
first. Carrying out such measurements in the
grounded state involves the risk of electric shock.
When measuring batteries, always ensure sufficient
ventilation. Sometimes sparks may occur when the
test leads are connected to batteries, which can
ignite any accumulated inflammable gases such as
hydrogen.
To avoid electric shock accidents, when measuring
batteries being charged wear proper protective gear
such as rubber gloves.
P
recautions
Follow these precautions to ensure safe operation and to
obtain the full benefits of the various functions.
Preliminary Check
Before using the instrument 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.

vi
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Precautions
――――――――――――――――――――――――――――――――――
WARNIN
G
Do not allow the instrument to get wet, and do not
take measurements with wet hands. This may cause
an electric shock.
Do not use the instrument where it may be exposed
to corrosive or combustible gases. The instrument
may be damaged or cause an explosion.
Before using the instrument, make sure that the
insulation on the test leads is undamaged and that
no bare conductors are improperly exposed. Using
the instrument in such conditions could cause an
electric shock, so contact your dealer or Hioki
representative for replacements (Model 9465 PIN
TYPE LEAD).
Be sure to connect the SOURCE and SENSE
terminals (banana plugs) correctly. When using the
9460 CLIP TYPE LEAD WITH TEMPERATURE SENSOR,
also connect the TEMP SENSOR terminal (miniplug)
.
See Section 4.2, "Measurement Batteries" for details
of the connections.
To avoid injury or damage to the instrument, do not
attempt to measure AC voltage, or DC voltage
exceeding 60 V.
Do not apply a voltage between the SOURCE(+) and
SENSE(+) or SOURCE(-) and SENSE(-) terminals.
This could result in damage to the instrument.
50 VDC ma
x

vii
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Precautions
――――――――――――――――――――――――――――――――――
CAUTIO
N
･This instrument is not designed to be entirely water- or
dust-proof. To avoid damage, do not use it in a wet or
dusty environment.
･Do not store or use the instrument where it could be
exposed to direct sunlight, high temperature or
humidity, or condensation. Under such conditions, the
instrument may be damaged and insulation may
deteriorate so that it no longer meets specifications.
･This instrument is designed for use indoors. It can be
operated at temperatures between 0 and 40 ℃without
degrading safety.
･Do not use the instrument near a source of strong
electromagnetic radiation, or near a highly electrically
charged object. These may cause a malfunction.
NOTE ･Correct measurement may be impossible in the presence
of strong magnetic fields, such as near transformers and
high-current conductors, or in the presence of strong
electromagnetic fields such as near radio transmitters.
･For safety reasons, when taking measurements, only
use the 9465 PIN TYPE LEAD provided with the
instrument or optional 9460 CLIP TYPE LEAD WITH
TEMPERATURE SENSOR.
Service
When sending the instrument for repair, remove the
batteries and pack carefully to prevent damage in transit.
Include cushioning material so the instrument cannot
move within the package. Be sure to include details of the
problem. Hioki cannot be responsible for damage that
occurs during shipment.

viii
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Organization of this Manual
――――――――――――――――――――――――――――――――――
O
rganization of this Manual
This manual consists of the following chapters.
"Introduction", "Inspection", "Safety", "Precautions"
include some important notes which you should read
before using the instrument.
Chapter 1 Overview
Describes an outline of the instrument, and lists its
features.
Chapter 2 Names and Functions of Parts
Lists the names of the parts of the instrument, and the
functions of all of the indications, terminals, and
switches.
Chapter 3 Specifications
Lists the specifications of the instrument.
Chapter 4 Standard Measurement
Describes the basic operation of the instrument.
Chapter 5 Advanced Measurement Functions
Describes miscellaneous functions.
Chapter 6 Maintenance
Gives troubleshooting information.

1
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Chapter 1 Overview
――――――――――――――――――――――――――――――――――
NOTE
Chapter
1
Overvie
w
1
.1 Product Overview
The 3551 is designed for measuring the internal
resistance, open-circuit voltage, and terminal temperature
of secondary batteries, including lead storage cells, nickel-
cadmium batteries, nickel-metal hydride batteries, and
lithium-ion batteries.
Measurements are taken by using noise reduction
technology to attenuate noise at frequencies other than
the measurement frequency (1 kHz). Incorrect
measurements may result if a large 1-kHz noise
component from the charger is present at the battery
terminals.

2
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Chapter 1 Overview
――――――――――――――――――――――――――――――――――
NOTE
1
.2 Features
(1) Since it uses the AC four-terminal method to measure the
internal resistance, it provides accurate results with the
lead resistances and contact resistances eliminated.
(2) It is possible to display the readings for the battery
internal resistance, voltage, and terminal temperature,
without changing functions.
(3) A composite comparator function, which can be set on
resistance and voltage values, enables reliable detection
of battery deterioration.
(4) The instrument’s memory function also allows a number
of sets of readings to be stored at a touch, and later
output to a printer.
(5) These functions make this an ideal tool for checking
batteries which are under constant trickle charging and
cannot be disconnected.
To measure the terminal temperature, use the optional
9460 CLIP TYPE LEAD WITH TEMPERATURE SENSOR.

3
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Chapter 2 Names and Functions of Parts
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Chapter
2
Names and Functions
of
Par
ts
This chapter explains the keys, input and output
terminals, display, LED indicators, and leads.

4
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Chapter 2 Names and Functions of Parts
――――――――――――――――――――――――――――――――――
Front Panel
19
1
2
3
4
5
6
7
9
10
11
8
17
16
13
12
14
15
20
21
Side Panel
22
18

5
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Chapter 2 Names and Functions of Parts
――――――――――――――――――――――――――――――――――
1
Selects the resistance range
.
Selects the voltage range.
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
2
1
2
2
■Keys and input/output terminals
POWER
key Turns the power on or off.
3m
Ωkey
30m
Ωkey
300m
Ωkey
3
Vkey
30
Vkey
0 ADJ
key Zero adjustment key
key Turns the beeper on and off.
HOLD
key Locks out changes to the display.
key Left cursor (flashing) key
COMP
key Switches the comparator on and off, and
changes display to the comparator setting
screen.
key Right cursor (flashing) key
UP
key Increases the value of a numeric setting.
DOWN
key Decreases the value of a numeric setting.
MEMO
key Stores the display data in memory.
CLEAR key Clears data captured with the
MEMO
key.
READ
key Reads data captured with the
MEMO
key.
PRINT key Prints data captured with the
MEMO
key.
SOURCE Connects to the banana plug of the 9460
on the SOURCE side.
SENSE Connects to the banana plug of the 9460
on the SENSE side.
AC adapter Connects the 9418-10 AC ADAPTER (PSA-
30U-120, PHIHONG).
TEMP.SENSOR Connects to the miniature phone plug of
the 9460.
EXT.HOLD Connects to the 9466 switch and stores the
displayed data in memory.
EXT.MEMO Connects to the 9466 switch, and stores
the displayed data in memory.
PRINT Connects to the printer.

6
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Chapter 2 Names and Functions of Parts
――――――――――――――――――――――――――――――――――
1
2
3
1
2
3
■LCD (view with all elements displayed)
■Displays
Measured resistance
Measured voltage [comparator resistance upper limit
setting and comparator voltage setting]
Temperature measurement value (when using the 9460)
[comparator resistance lower limit setting]
mΩIndicates the unit of resistance.
V Indicates the unit of voltage.
℃Indicates the unit of temperature.
HOLD
Appears when the display is locked.
COMP
Appears when the comparator function is on.
Appears when the beeper is turned on.
DATA Indicates that data captured data with the
MEMO
key is present.
No. Indicates the number of data points captured
with the
MEMO
key.
Usually, this is the number of the last data
point captured.
[The comparator table number.]
[]: Appears in on the comparator setting screen

7
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Chapter 2 Names and Functions of Parts
――――――――――――――――――――――――――――――――――
MEMO
Flashes once when the
MEMO
key is
pressed.
Appears when the data is read out.
Appears when the battery voltage of the
tester is low, to prompt the user to replace
the battery.
COMP.SET
Appears during display of the comparator
setting screen.
OHM Appears during display of the screen for
setting the comparator resistance upper
and lower limit values.
VOLT Appears during display of the screen for
setting the comparator voltage threshold
value.
■LEDs
PASS Indicates that the tested battery is
satisfactory for operation.
WARNING Indicates that the tested battery is
beginning to deteriorate.
FAIL Indicates that the tested battery has
deteriorated.
These indications appear when the upper and lower
comparator limits for internal resistance and the
comparator threshold value for voltage are all set.

8
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Chapter 2 Names and Functions of Parts
――――――――――――――――――――――――――――――――――
Probe (red)
Probe (black)
SOURCE
Banana plug (black)
Banana plug (red)
SENSE
Miniature phone plug 2.5 mm dia.
（
EXT.HOLD, EXT.MEMO
）
Switch
Contact hole
SOURCE,SENSE short-circuit point
SENSE short-circuit plane
(sheet metal)
SOURCE short-circuit plane
(gold plated
)
■9465 PIN TYPE LEAD
■9466 REMOTE CONTROL SWITCH
■Zero adjustment holds