Sealey TA319.V2 User manual

DIGITAL INSULATION TESTER
MODEL NO: TA319.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
WARNING! USE EXTREME CAUTION when working with high voltages.
9When using this meter, please observe all normal safety rules concerning:
9Protection against the dangers of electrical current.
9Protection of the meter against misuse.
9 Familiariseyourselfwiththeapplications,limitationsandhazardsofthetester.Ifinanydoubtconsultaqualiedelectrician.
9Read the following safety information carefully before attempting to operate or service the meter.
9To avoid damages to the instrument DO NOTapplythesignalswhichexceedthemaximumlimitsshowninthetechnicalspecications.
8DO NOT use the meter or test leads if they look damaged. Use extreme caution when working around bare conductors or bus bars.
9Accidental contact with the conductor could result in electric shock.
9 Usethemeteronlyasspeciedinthismanual;otherwise,theprotectionprovidedbythemetermaybeimpaired.
9Read the operating instructions before use and follow all safety Information.
9Caution when working with voltages above 60V dc or 30V ac RMS. Such voltages pose a shock hazard.
9Before taking resistance measurements or testing acoustic continuity, disconnect circuit from main power supply and all loads from
the circuit.
NOTE: The warnings, cautions and instructions referred to in this 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 testing insulation on high voltage cables. Suitable for hybrid and electric vehicles. Supplied with test leads, batteries
and carry-case. Conforms to EN61010 CAT III (1000V).
3. SPECIFICATION
Model No: ......................................................................................................TA319.V2
Voltage AC: ................... Range 750V, Max. resolution 1V, Accuracy (±1.2% ± 10 digits)
Voltage DC:................... Range 1000V, Max. resolution 1V, Accuracy (±0.8% ± 3 digits)
Resistance: ....................................................................................................................
................. Range200Ω-2000Ω,Max.resolution0.1Ω-1Ω,Accuracy(±1%±2digits)
Insulation Resistance:....................................................................................................
....Range200MΩ-2000MΩ,Max.resolution100kΩ-1MΩ,Accuracy(±3.5%±5digits)
Test Voltage: ......................................250V-200MΩ,500V-200MΩ,1000V-2000MΩ
Continuity Test: ......................................Activesoundlevel≤40Ω,Testcurrent≤200mA
Operating Temperature: .............................................................0°C-40°C(<80%R.H.)
Storage Temperature: .............................................................-10°C-60°C(<70%R.H.)
Batteries (supplied):..................................................................................... 6 x 1.5V AA
4. CONTROLS
1 Digital display
2 Data hold button
3 Lock button
4Backlight button
5 Test button
6 Rotary function switch
7 VΩjack
8 COMinputjack
TA319.V2 Issue 1 11/3/21
Original Language Version
© Jack Sealey Limited
Refer to
instruction
manual
Warning!
Electricity

5. OPERATION
5.1. CONNECTING LEADS
5.1.1. On MΩ Range:ConnecttheredtestleadintotheVΩterminalandtheblackterminalintotheCOMterminal.
5.1.2. On 200Ω and ACV Range:Connecttheredtestleadintothe“VΩ”terminalandtheblackleadintoterminal“COM”.
5.2. TEST LEADS CHECK
5.2.1. Settherangeselectswitchtothe200Ωrange.Withthetipandalligatorclipofthetestleadsconnected,theindicatorshouldread
 00.0Ω.Whentheleadsarenotconnectedthedisplaywillreadinnityindicatedby“1”.Thiswillensurethattestleadareunder 
working condition.
5.3. BATTERY CHECK AND REPLACEMENT
5.3.1. IfbatterypowerisinsufcienttheLCDwilldisplay.6x1.5VAAbatteriesarerequired.
5.3.2. Removethefourscrewswhichholdthebatterycovertotbatteries.
5.4. INSULATION RESISTANCE MEASUREMENT
5.4.1. Measurements at 200mΩ/250V
5.4.2. Thisisthevoltageusedforthemajorityofinsulationresistancetestsonnormalinstallations.
5.4.2.1. To measure insulation resistance, press the test button to power on the tester. The LCD will display the insulation resistance.
Section VII indicated that subdivision of large installations might be necessary because of the large number of parallel insulation
resistance. In such a case, an installation may be divided into sections, each being separately tested. Each section must have not
less than fifty outlets, an outlet being a switch, socket, lighting point etc. A switched socket counts as one outlet. The minimum
 acceptableinsulationresistanceis1MΩ.Foralargeinstallation,thecapacitanceoftheinsulationwillbehigh,anditwilltake
longer for it to become charged by the direct testing voltage. Care must be taken not to take a reading until there is a steady
reading, indicating that the charging process is complete.
NOTE: The charge stored in the insulation will be discharged automatically when the test button is released. Be careful not to turn
the range switch knob whilst the test button is pressed, or the instrument will be damaged.
5.4.3. Measurements at 2000mΩ/1000V
5.4.3.1. Somespecicationsrequiretestingat1000V.Thisvoltagemustalsobeselectedwherethesupplyvoltageoftheinstallationis 
between 500V and 1000V. First, set the range switch to 1000V and then proceed as indicated above for 500V testing. The above
note also applies to testing at 1000V. In addition the following applies.
NOTE: Make sure that the circuit under does not include components which will be damaged by the 1000V applied. Many normal
components of an installation are likely to be damaged if tested at 1000V. Examples are power factor correction capacitors, low
 voltagemineralinsulatedcables,electroniclightdimmers,electronicballastsandstartersforuorescentlampsetc.
5.5. LOCK POWER ON FEATURE
5.5.3.1. For hands free operation a lock power on feature is incorporated on the press to test button. Set LOCK button to lock test voltage,
pressing it again will turn the tester off.
5.6. LOW RESISTANCE (CONTINUITY MEASUREMENTS)
5.6.1. Settherangeswitchto200Ωposition.
5.6.2. ConnecttheredtestleadtotheVΩterminalandblacktotheCOMterminal.
5.6.3. Connectthetipsofthetestleadstobothendsofthecircuitundertest.ReadresistanceinΩontheLCD.
5.6.4. Whentheimpedanceoncircuitisbelowapproximately40Ω.Itwillindicatebyacontinuousbeeper.
5.7. AC/DC VOLTAGE MEASUREMENTS
5.7.1. Set the range switch to acV or dcV position.
5.7.2. Connectredtestleadto“VΩ”terminalandblacktestleadtoterminal“COM”.
5.7.3. Connect test prods of test leads IN PARALLEL to the circuit being measured.
5.7.4. Read the voltage value on LCD.
5.8. POWER TOOLS AND SMALL APPLIANCES See (g.1)
5.8.1. This test would also apply to other similar equipment that has a power cable. For double insulated power tools, the megohmmeter
lead shown connected to the housing would be connected to some metal part of the tool (e.g chuck or blade).
NOTE: Theswitchofthedevicemustbeinthe“ON”positionandthemainspowershouldbedisconnected.
5.9. AC MOTORS Refer to (g.1)
5.9.1. 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.
5.10. DC MOTORS Refer to (g.1)
5.10.1. Disconnect the motor from the line. To test the brush
 rigging,eld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,eld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.
Original Language Version
© Jack Sealey Limited
g.1
TA319.V2 Issue 1 11/3/21

Original Language Version
© Jack Sealey Limited
Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR
01284 757500 01284 703534 [e-mail] www.sealey.co.uk
ENVIRONMENT PROTECTION
Recycle unwanted materials instead of disposing of them as waste. All tools, accessories and packaging should be sorted, taken to
a recycling centre and disposed of in a manner which is compatible with the environment. When the product becomes completely
unserviceable and requires disposal, drain any fluids (if applicable) into approved containers and dispose of the product and fluids
according to local regulations.
WEEE REGULATIONS
Dispose of this product at the end of its working life in compliance with the EU Directive on Waste Electrical and Electronic Equipment
(WEEE). When the product is no longer required, it must be disposed of in an environmentally protective way. Contact your local solid
waste authority for recycling information.
BATTERY REMOVAL
Under the Waste Batteries and Accumulators Regulations 2009, Jack Sealey Ltd are required to inform potential purchasers of products
containing batteries (as defined within these regulations), that they are registered with Valpak’s registered compliance scheme. Jack
Sealey Ltd Batteries Producer Registration Number (BPRN) is BPRN00705.
Note: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
Important: No Liability is accepted for incorrect use of this product.Please note that other versions of this product are available. If you require
documentationforalternativeversions,pleaseemailorcallourtechnicalteamon[e-mail]or01284757505.
Warranty: Guarantee is 12 months from purchase date, proof of which is required for any claim.
Partssupportisavailableforthisproduct.Pleaselogontowww.sealey.co.uk,email[e-mail]ortelephone01284757500
5.11. CABLES Refer to (g.2)
5.11.1.1. Disconnect the cable from the line, also disconnect the
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.
g.2
TA319.V2 Issue 1 11/3/21