Sealey TA320.V2 User manual

DIGITAL AUTOMOTIVE ANALYSER/
INSULATION TESTER - HYBRID VEHICLES
MODEL NO: TA320.V2
Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these
instructions, and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS.
USE THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE
AND/OR PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
1. SAFETY
9Wear safety eye protection that meets ANSI standards.
9Operate the vehicle to be tested in a well ventilated area. Exhaust gases are poisonous. If necessary connect the vehicle
exhaust to a fume extraction system.
9Place chocks in front of the drive wheels and never leave the vehicle unattended whilst testing is in progress.
9Be extra cautious when working in close proximity to the ignition coil, distributor cap, ignition wires and spark plugs. These
components create hazardous voltages when the engine is running.
9Ensure that the handbrake is on and the gearbox is in neutral or ‘Park’ for automatic transmissions.
9 Keepreextinguishersnearbythataresuitableforpetrol/chemical/electricalres.
9Keep the analyser clean and in good condition.
9Remain vigilant when using the code reader on, or near, machinery where there are rotational parts such as belts, pulleys
and fans.
9 Removeillttingclothing.Removeties,watches,rings,andotherloosejewellery,andcontainand/ortiebacklonghair.
9 Maintaincorrectbalanceandfooting.Ensuretheoorisnotslipperyandwearnon-slipshoes.
9Keep product surfaces clean and dry.
8  DO NOT attempt to connect or disconnect any test equipment whilst the ignition is on or the engine is running.
8  DO NOTusetheanalyserifdamageissuspected.Ifsuspecteddamageoccurswiththedevice,haveitinspectedbyqualied
service personnel before using it again.
8  DO NOT get the analyser wet or use in damp or wet locations or areas where there is condensation.
8  DO NOT use the analyser for any purpose other than for which it is designed.
8  DO NOT allow untrained persons to use analyser.
8  DO NOTusetheanalyserwhenyouaretiredorundertheinuenceofalcohol,drugsorintoxicatingmedication.
8  DO NOToperateinapotentiallyexplosiveenvironment/atmosphere.
  WARNING: The warnings, cautions and instructions discussed in this instruction manual cannot cover all possible conditions
and situations that may occur. It must be understood that common sense and caution are factors which cannot be built into
this product, but must be applied by the operator.
2. INTRODUCTION
Specially designed for hybrid vehicles and conforms to EN61010 CAT III (1000V) and CAT IV (600V). Unlike other multimeters this
unit has an insulation test function that allows testing of the insulation of the high voltage cables and motor generator units found on
hybrid vehicles. Can be used as a standalone device or linked wirelessly with a USB interface to a PC or laptop enabling results to be
graphed, saved or printed. Supplied with high voltage probes, thermocouple soft storage bag and wireless USB cable. The unit also has
theusualfunctionsexpectedonahighqualitymultimeterincludingtrueRMS(Root-Mean-Square)andIP67waterproofrating.
Refer to
instructions
TA320.V2Issue113/07/2021
Original Language Version
© Jack Sealey Limited

3. SPECIFICATION
Tach (rpm):........................................................................ No
Dwell:................................................................................ No
AC Voltage:.............................400mV, 4V, 40V, 400V, 1000V
Voltage:................................... 400mV, 4V, 40V, 400V, 1000V
AC Current:...................400µA, 4000µA, 40mA, 400mA, 10A
DC Current:................... 400µA, 4000µA, 40mA, 400mA, 10A
Capacitance:.40nF, 400nF, 4µF, 40µF, 400µF, 4000µF, 40mF
Frequency:......................................................... 40Hz-10kHz
Duty Cycle: ............................................................0.1-99.9%
Pulse Width:..................................................... 100µs-100ms
Resistance: ............... 400Ω,4kΩ,40kΩ,400kΩ,4MΩ,40MΩ
Continuity:.................................................................. <35Ω
Temperature:........................ -50to+1000°C,-58to+1832°F
IR Temperature: ................................................................ No
Insulation Test: ............................... 125V, 250V, 500V, 1000V
Diode Check: ................................................................... Yes
Transistor Test: ................................................................. No
Back Light: ....................................................................... Yes
Bar-GraphDisplay: .......................................................... Yes
Display Hold:.................................................................... Ye s
Auto-Ranging:.................................................................. Yes
Inductive Coupler: ............................................................. No
PC Interface:.................................................................... Yes
Digits Height: ............................................................... 20mm
AutoPowerO󰀨:................................................................ Ye s
Low Battery Indicator: ...................................................... Ye s
Batteries (supplied): .............................................6 x 1.5V AA
Hi-ImpactCase: ............................................................... Yes
Size (L x W x D): .........................................220x95x56mm
PC Compatibility: ..................Windows2000,XP,Vista,Win7
TA320.V2Issue113/07/2021
Original Language Version
© Jack Sealey Limited

Safety Symbols This symbol adjacent to another symbol, terminal
or operating device indicates that the operator
must refer to an explanation in the Operating
Instructions to avoid personal injury or damage to
the meter.
This WARNING symbol indicates a potentially
hazardous situation, which if not avoided, could
result in death or serious injury.
This CAUTION symbol indicates a potentially
hazardous situation, which if not avoided, may
result in damage to the product.
This symbol advises the user that the terminal(s)
so marked must not be connected to a circuit point
at which the voltage with respect to earth ground
exceeds (in this case) 1000 VAC or VDC.
This symbol adjacent to one or more terminals
identifies them as being associated with ranges
that may, in normal use, be subjected to
particularly hazardous voltages. For maximum
safety, the meter and its test leads should not be
handled when these terminals are energized.
This symbol indicates that a device is protected
throughout by double insulation or reinforced
insulation.
WARNING
CAUTION
MAX
1000V

PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY
OVERVOLTAGE CATEGORY I
Equipment of OVERVOLTAGE CATEGORY I is equipment for
connection to circuits in which measures are taken to limit the
transient overvoltages to an appropriate low level.
Note – Examples include protected electronic circuits.
OVERVOLTAGE CATEGORY II
Equipment of OVERVOLTAGE CATEGORY II is energy-consuming
equipment to be supplied from the fixed installation.
Note – Examples include household, office, and laboratory appliances.
OVERVOLTAGE CATEGORY III
Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed
installations.
Note – Examples include switches in the fixed installation and some
equipment for industrial use with permanent connection to the fixed
installation.
OVERVOLTAGE CATEGORY IV
Equipment of OVERVOLTAGE CATEGORY IV is for use at the
origin of the installation.
Note – Examples include electricity meters and primary
over-current protection equipment

ELECTRICAL SAFETY PRECAUTIONS
This meter has been designed for safe use, but must be operated with
caution. The rules listed below must be carefully followed for safe
operation.
1. NEVER apply voltage or current to the meter that exceeds the
specified maximum:
Input Protection Limits
Function Maximum Input
V DC or V AC 1000VDC/AC rms
mA AC/DC 500mA 1000V fast acting fuse
AAC/DC
10A 1000V fast acting fuse (20A
for 30 seconds max every 15
minutes)
Frequency, Resistance,
Capacitance, Duty Cycle,
Diode Test, Continuity
1000VDC/AC rms
Temperature 1000VDC/AC rms
Surge Protection: 8kV peak per IEC 61010
2. USE EXTREME CAUTION when working with high voltages.
3. DO NOT measure voltage if the voltage on the "COM" input jack
exceeds 1000V above earth ground.
4. NEVER connect the meter leads across a voltage source while
the function switch is in the current, resistance, or diode mode.
Doing so can damage the meter.
5. ALWAYS discharge filter capacitors in power supplies and
disconnect the power when making resistance or diode tests.
6. ALWAYS turn off the power and disconnect the test leads before
opening the covers to replace the fuse or batteries.

7. NEVER operate the meter unless the back cover and the battery
and fuse covers are in place and fastened securely.
If the equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired.
Controls and Jacks
1. 40,000 count LCD display
2. MAX/MIN (-)button
3. STORE(<RECALL) button
4. RANGE(SETUP) button
5. INSULATION TEST button
6. MODE button
7. Function switch
8. mA, µA and 10A input jacks
9. REL(+) button
10. HOLD(PEAKHOLD>) button
11. EXIT(AC+DC) button
12. Backlight and RF button
13. Positive input jack
14. COM input jack
Note: Tilt stand and battery compartment are on rear of unit.

Symbols and Annunciators
•))) Continuity
Diode test
Battery status
n nano (10-9) (capacitance)
µ micro (10-6) (amps, cap)
m milli (10-3) (volts, amps)
A Amps
k kilo (103) (ohms)
F Farads (capacitance)
M mega (106) (ohms)
Ω Ohms PEAK Peak Hold
Hz Hertz (frequency) V Volts
% Percent (duty ratio) REL Relative
AC Alternating current AUTO Autoranging
DC Direct current HOLD Display hold
ºF Degrees Fahrenheit ºC Degrees Centigrade
MAX Maximum MIN Minimum
No. Serial number RF transmitter active
S Second
left auxiliary display
right auxiliary display
SET Set up parameter
AC+DC Alternating current + Direct current
TRMS True RMS
STO Store
RCL Recall
AUTO Auto Range
Timing symbol
Backlight
Bar graph

Operating Instructions
WARNING: Risk of electrocution. High-voltage circuits, both AC and
DC, are very dangerous and should be measured with great care.
1.ALWAYS turn the function switch to the OFF position when the
meter is not in use.
2.If “OL” appears in the display during a measurement, the value
exceeds the range you have selected. Change to a higher range.
DC VOLTAGE MEASUREMENTS
CAUTION: Do not measure DC voltages if a motor on the circuit
is being switched ON or OFF. Large voltage surges may occur
that can damage the meter.
1. Set the function switch to the green VDC
position.
2. Insert the black test lead banana plug into the
negative COM jack.
Insert the red test lead banana plug into the
positive Vjack.
3. Touch the black test probe tip to the negative
side of the circuit.
Touch the red test probe tip to the positive
side of the circuit.
4. Read the voltage in the display.

AC VOLTAGE (FREQUENCY, DUTY CYCLE) MEASUREMENTS
WARNING: Risk of Electrocution. The probe tips may not be long
enough to contact the live parts inside some 240V outlets for
appliances because the contacts are recessed deep in the outlets.
As a result, the reading may show 0 volts when the outlet actually
has voltage on it. Make sure the probe tips are touching the metal
contacts inside the outlet before assuming that no voltage is
present.
CAUTION: Do not measure AC voltages if a motor on the circuit
is being switched ON or OFF. Large voltage surges may occur
that can damage the meter.
1. Set the function switch to the green
VAC/Hz/% position.
2. Insert the black test lead banana plug
into the negative COM jack.
Insert red test lead banana plug into the
positive Vjack.
3. Touch the black test probe tip to the
neutral side of the circuit.
Touch the red test probe tip to the “hot”
side of the circuit.
4. Read the voltage in the main display and
the frequency in the right auxiliary
display
5. Press and hold the MODE button 2 second to indicate “Hz”.
6. Read the frequency in the main display.
7. Press the MODE button to indicate “%”.
8. Read the % of duty cycle in the main display.
9. Press EXIT for 2 seconds into the function of AC+DC. Test DC
and AC True Rms.

MV VOLTAGE MEASUREMENTS
CAUTION: Do not measure mV voltages if a motor on the circuit
is being switched ON or OFF. Large voltage surges may occur
that can damage the meter.
1. Set the function switch to the green mV position.
2. Press the MODE button to indicate “DC”.or
““AC ”, or in AC range press EXIT for two
seconds and chose ”AC+DC”
Insert the black test lead banana plug into
the negative COM jack.
Insert the red test lead banana plug into
the positive Vjack.
3. Touch the black test probe tip to the
negative side of the circuit.
Touch the red test probe tip to the positive
side of the circuit.
4. Read the mV voltage in the display.

DC CURRENT MEASUREMENTS
CAUTION: Do not make 20A current measurements for longer
than 30 seconds. Exceeding 30 seconds may cause damage to
the meter and/or the test leads.
1. Insert the black test lead banana plug into the negative COM jack.
2. For current measurements up to 4000µA
DC, set the function switch to the yellow µA
position and insert the red test lead banana
plug into the µA/mA jack.
3. For current measurements up to 400mA DC,
set the function switch to the yellow mA
position and insert the red test lead banana
plug into the µA/mA jack.
4. For current measurements up to 20A DC,
set the function switch to the yellow 10A/HZ/%
position and insert the red test lead banana
plug into the 10A jack.
5. Press the MODE button to indicate “DC” on
the display.
6. Remove power from the circuit under test,
then open up the circuit at the point where
you wish to measure current.
7. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
8. Apply power to the circuit.
9. Read the current in the display.

AC CURRENT (FREQUENCY, DUTY CYCLE) MEASUREMENTS
CAUTION: Do not make 20A current measurements for longer
than 30 seconds. Exceeding 30 seconds may cause damage to
the meter and/or the test leads.
1. Insert the black test lead banana plug
into the negative COM jack.
2. For current measurements up to
4000µA AC, set the function switch to
the yellow µA position and insert the
red test lead banana plug into the
µA/mA jack.
3. For current measurements up to
400mA AC, set the function switch to
the yellow mA position and insert the
red test lead banana plug into the
µA/mA jack.
4. For current measurements up to 20A
AC, set the function switch to the
yellow 10A/HZ/% position and insert
the red test lead banana plug into the
10A jack.
5. Press the MODE button to indicate “AC”
on the display.
6. Remove power from the circuit under test, then open up the
circuit at the point where you wish to measure current.
7. Touch the black test probe tip to the neutral side of the circuit.
Touch the red test probe tip to the “hot” side of the circuit.
8. Apply power to the circuit.
9. Read the current in the display. In the 10AAC range, right
auxiliary display frequency.
10. Press and hold the MODE button to indicate “Hz”.
11. Read the frequency in the display.
12. Momentarily press the MODE button again to indicate “%”.

13. Read the % duty cycle in the display.
14. Press and hold the MODE button to return to current
measurement.
15. Press EXIT for 2 seconds into the function of AC+DC. Test DC
and AC True Rms.
RESISTANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the unit
under test and discharge all capacitors before taking any
resistance measurements. Remove the batteries and unplug the
line cords.
1. Set the function switch to the green
Ω CAP position.
2. Insert the black test lead banana plug
into the negative COM jack.
Insert the red test lead banana plug into
the positive Ωjack.
3. Press the MODE button to indicate
“Ω” on the display.
4. Touch the test probe tips across the
circuit or part under test. It is best to
disconnect one side of the part under
test so the rest of the circuit will not
interfere with the resistance reading.
5. Read the resistance in the display.

CONTINUITY CHECK
WARNING: To avoid electric shock, never measure continuity on
circuits or wires that have voltage on them.
1. Set the function switch to the green
ΩCAP position.
2. Insert the black lead banana plug into the
negative COM jack.
Insert the red test lead banana plug into the
positive Ωjack.
3. Press the MODE button to indicate“ "and
“Ω” on the display
4. Touch the test probe tips to the circuit or wire
you wish to check.
5. If the resistance is less than approximately
35Ω, the audible signal will sound. If the
circuit is open, the display will indicate “OL”.
DIODE TEST
1. Set the function switch to the green ΩCAP
position.
2. Insert the black test lead banana plug into the
negative COM jack and the red test lead
banana plug into the positive Vjack.
3. Press the MODE button to indicate“ “ and
“V” on the display.
4. Touch the test probes to the diode under test.
Forward voltage will typically indicate 0.400 to
0.700V. Reverse voltage will indicate “OL”.
Shorted devices will indicate near 0V and an
open device will indicate “OL” in both
polarities.

CAPACITANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the unit
under test and discharge all capacitors before taking any
capacitance measurements. Remove the batteries and unplug the
line cords.
1. Set the rotary function switch to the green
Ω CAP position.
2. Insert the black test lead banana plug into
the negative COM jack.
3. Insert the red test lead banana plug into
the positive Vjack.
4. Press the MODE button to indicate “F”
5. Touch the test leads to the capacitor to be
tested.
Read the capacitance value in the
Display
TEMPERATURE MEASUREMENTS
1. Set the function switch to the green
Temp position.
2. Insert the Temperature Probe into the
input jacks, making sure to observe the
correct polarity.
3. Press the MODE button to indicate “ºF”
or “ºC”
4. Touch the Temperature Probe head to
the part whose temperature you wish to
measure. Keep the probe touching the
part under test until the reading
stabilizes (about 30 seconds).
5. Read the temperature in the display.
Note: The temperature probe is fitted with a type K mini connector.
A mini connector to banana connector adaptor is supplied for
connection to the input banana jacks.

FREQUENCY (DUTY CYCLE) MEASUREMENTS (ELECTRONIC)
1. Set the rotary function switch to the green Hz/% position.
2. Insert the black lead banana plug into the
negative COM jack and the red test lead
banana plug into the positive Hz jack.
3. Touch the test probe tips to the circuit under
test.
4. Read the frequency on the display.
5. Press the MODE button to indicate “%”.
6. Read the % duty cycle in the display.
% 4 – 20mA MEASUREMENTS
1. Set up and connect as described for DC mA measurements.
2. Set the rotary function switch to the 4-20mA% position.
3. The meter will display loop current as a % with 0mA=-25%,
4mA=0%, 20mA=100%, and 24mA=125%.
INSULATION RESISTANCE MEASUREMENTS
a)Set the rotary function switch to the INSULATION position
and Press the RANGE button to chose one of the voltages
displayed in the top left corner.
b)Connect two testing lines to the item to be tested.
c)Push down and hold the “TEST” button or press the “LOCK” key first
and then the “TEST” button, if there is any static electricity present
in the item being tested and its voltage is over 30V, it will fail and no
high-voltage testing will occur, “>30V” will display on the LCD, the
symbol “” flashes, and the buzzer will sound. Otherwise it will
enter into the formal testing process and the high-voltage will show
on the primary display, the insulation resistance in MΩis indicated
in-phase with the analog bar; on the top right corner display, the

tested insulation voltage in V (DC) is indicated, the symbol “”
flashes and the buzzer will sound.
d)Releasing the “TEST” button or pushing down the “TEST” button in
the “LOCK “ status will exit from the “LOCK” status and shut-off the
testing voltage, simultaneously the resistance value indicated in the
primary display will be held, and the top right corner display will still
show the status of the insulation voltage for the item tested.
Turning the function switch to off or pressing the EXIT button
will exit from the testing procedure during the process.
POWER TOOLS AND SMALL APPLIANCES
This test would also apply to other similar equipment that has a line
cord. For double insulated power tools, the megohmmeter lead shown
connected to the housing would be connected to some metal part lf
the tool(e.g. chuck, blade).
Note: The switch of the device must be in the “ON” position and the
main power should be disconnected.
MOTORS
AC-Disconnect the motor from the line by disconnecting the wires at
the motor terminals or by opening the main switch. If the main switch
is used and the motor also has a starter then the starter must be held,
by some means, in the “ON” position. In the latter case, the measured
resistance will include the resistance of the motor, wire and all other
components between the motor and the main switch. If a weakness is
indicated, the motor and other components should be checked
individually. If the motor is disconnected at the motor terminals,
connect one megohmmeter lead to the grounded motor housing and
the other lead to one of the motor leads. DC - Disconnect the motor
from the line. To test the brush rigging, field coils and armature

connect one megohmmeter lead to the grounded motor housing and
the other lead to the brush on the commutator. If the resistance
measurement indicates a weakness, raise the brushes off the
commutator and separately test the armature, field coils and brush
rigging by connecting one megohmmeter lead to each of them
individually, leaving the other connected to the grounded motor
housing. The above also applies to DC Generators.

CABLES
Disconnect the cable from the line. Also disconnect opposite end to
avoid errors due to leakage from other equipment. Check each
conductor to ground and /or lead sheath by connecting one
megohmmeter lead to a ground and /or lead sheather and the other
megohmmeter lead to each of the conductors in turn. Check insulation
resistance between conductors by connecting megohmmeter leads to
conductors in pairs.

AUTORANGING/MANUAL RANGE SELECTION
When the meter is first turned on, it automatically goes into
AutoRanging. This automatically selects the best range for the
measurements being made and is generally the best mode for most
measurements. For measurement situations requiring that a range
be manually selected, perform the following:
1.Press the RANGE key. The “AUTO” display indicator will turn off.
2. Press the RANGE key to step through the available ranges until
you select the range you want.
3. To exit the Manual Ranging mode and return to Autoranging,
press EXIT
Note: Manual ranging does not apply for the Temperature functions.
MAX/MIN
1.Press the MAX/MIN key to activate the MAX/MIN recording mode.
The display icon "MAX" will appear. The meter left auxiliary
display will display and hold the maximum reading and will update
only when a new “max” occurs. The display icon "MIN" will appear.
The right auxiliary display meter will display and hold the
minimum reading and will update only when a new “min” occurs.
2.To exit MAX/MIN mode press EXIT
RELATIVE MODE
The relative measurement feature allows you to make
measurements relative to a stored reference value. A reference
voltage, current, etc. can be stored and measurements made in
comparison to that value. The displayed value is the difference
between the reference value and the measured value. Note:
Relative mode does not operate in the 4-20mA function.
1. Perform the measurement as described in the operating
instructions.
2. Press the REL button to store the reading in the display and the
"REL" indicator will appear on the display.