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riešenia na presné meranieFluke Combo KitsBuy a Combo Kit and saveFluke 287/FVF FlukeViewForms Combo Kit Fluke 287 True RMS ElectronicLogging Multimeter withTrendCapture FVF-SC2 FlukeView FormsSoftware and cable 80BK-A Thermocouple Probe CAT III 1000 V 10 A ModularTest Leads (red, black) CAT II 300 V 5 A Alligator Clips(red, black) C280 Soft Case for meterprotection and accessorystorageFluke 1587/MDTAdvanced Motor & DriveTroubleshooting Kit Fluke 1587 InsulationMultimeter Fluke 9040 Phase RotationIndicator I400 Current ClampFluke 1587/MDTFluke T5-H5-1AC KitFluke 289/FVF IndustrialLogging Multimeter andSoftware Combo Kit Fluke 289 True-RMSMultimeter FVF-SC2 FlukeView FormsSoftware and cable Silicon Test Lead Set AC172 Alligator Clips 80BK-A Integrated DMMTemperature Probe TPAK Magnetic Meter Hangerfor hands-free operation C280 Soft Case for meterprotection and accessorystorage Fluke T5-1000 Electrical Tester H5 Holster 1AC-II Volt AlertFluke T5-600/62/IAC-E Kit Fluke T5-600 Electrical Tester Fluke 62 Mini IR Thermometer Fluke 1AC-II Volt Alert C115 Soft Meter CaseFluke 1587/ET AdvancedElectrical Troubleshooting Kit Fluke 1587 Insulation Multimeter Fluke 62 Mini InfraredThermometer I400 Current ClampFluke 62/322/1AC Kit Fluke 62 Mini IR Thermometer Fluke 322 Clamp Meter Fluke 1AC-II Volt AlertOrdering InformationFluke 287/FVFFluke 289/FVFFluke 1587/ETFluke 1587/MDTFluke T5-H5-1AC KitFluke T5-600/62/IAC-E KitFluke 62/322/1AC KitFluke 411D/62 KitFluke 411D/62 Kit Fluke 411D Laser DistanceMeter Fluke 62 Mini IR Thermometer Soft case for each modelhttp://www.elso.sk5

riešenia na presné meranieApplication/background articlesAs part of our commitment to supporting you in your work we domore than just design and manufacture rugged and versatile test tools:we also provide application notes which all can be downloaded fromour web site. Furthermore check out our “total solutions” campaignson the website. In addition to inspection tips and helpful applicationinformation, these campaigns also offer advice on picking the right toolfor the job.6http://www.elso.sk

riešenia na presné meranieLet Fluke After Sales Servicehelp you furtherDid you know that the Fluke after salesservice team can offer you much morethan just repairing and calibrating yourinstrument when it is needed? Acrossour whole Fluke European serviceorganization we have a vast range ofcapabilities, which can be utilized viayour local service centre. Behind thescenes Fluke draws on the expertise ofover 150 service staff that are focusedon offering only the best and mostcomprehensive after sales service.What other value added services dowe offer?So why should you use Fluke service? Original manufacturers’ parts used All instruments reviewed for latest updates Repair warranty that covers whole unit In depth product knowledge Accredited calibrations available Traceable calibrations available on allproducts Full check of unit during verification cycle Full safety test on mains powered unitsWhat other instruments can we helpyou with? Gold Support for Fluke Networks Gold CarePlans for calibration products A full range of maintenance contracts Extended warranty programs Instrument upgrades Option retrofits Asset management Calibration remindersWhat services do we offer you? 5 day repairs on all current products 5 days or less on all calibrations (excl.repairs) 3 days for all Gold CarePlan calibrations 1-2 days on all Networks Gold calibration Pick up services where availableWe also offer a range of calibrations andrepairs on other manufacturer’s equipmentupon request. Manufacturers such as: Tektronix Agilent Bruel & Kjaer Philips Megger Seaward Kewtech Lecroy Hioki Yokogawa Druck Iwatzu plus many more .Fluke service centres handle a wide rangeof equipment.As part of Fluke’s continuing focus on improvingour service to our customer we now offer acomprehensive range of repairs and calibrationson a vast range of equipment.Fluke manufactures equipments such as:Fluke BrandsFlukeHart ScientificFluke NetworksFluke BiomedicalRaytekReliable Power MetersRobinLEM n-Line booking in systemWhy not use our On-Line booking in systemwhere you can book your unit in, get pricingand receive a RMA number for a smoothreturn.www.fluke.com/servicermaInstrument TypesDigital MultimetersElectrical StandardsBiomedical EquipmentData LoggersThermal ImagersThermometersPressureFunction GeneratorsOscilloscopesInstallation TestersPAT TestersClamp MetersPower AnalyzersEX metersPlus many moreContact InformationTelephoneTelefaxEmailAddressEindhoven 31 (0)40 267 5300 31 (0)40 267 5321servicedesk@fluke.nlScience Park 5108Eindhoven5692 EC SonNetherlandshttp://www.elso.skNorwich 44 (0)1603 256620 44 (0)1603 256688ukservicedesk@fluke.com52 Hurricane WayNorwichNorfolkNR6 6JBUnited KingdomCologne 49 (0)69 2222 20210 49 (0)69 2222 r. 9-1150739 KölnGermany7

riešenia na presné meranieFluke: Where safety is built inAs distribution systems and loadsbecome more complex, the possibilitiesof transient overvoltages increase.Motors, capacitors and power conversionequipment such as variable speed drivescan be prime generators of spikes.Lightning strikes on outdoor transmissionlines also cause extremely hazardoushigh-energy transients. If you’re takingmeasurements on electrical systems,these transients are “invisible” andlargely unavoidable hazards. They occurregularly on low-voltage power circuits,and can reach peak values in the manythousands of volts. To protect you againsttransients, safety must be built into thetest equipment.Who Develops Safety Standards?The IEC (International ElectrotechnicalCommission) develops international generalstandards for safety of electrical equipmentfor measurement, control and laboratoryuse. IEC61010-1 is used as the basis for thefollowing national standards: US ANSI/ISA-S82.01-94 Canada CAN C22.2 No.1010.1-92 Europe EN61010-1:2001Overvoltage Installation CategoriesIEC61010-1 specifies categories ofovervoltage based on the distance the pieceof equipment is from the power source(see Fig. 1 and Table 1) and the naturaldamping of transient energy that occursin an electrical distribution system. Highercategories are closer to the power source andrequire more protection.Within each installation category there arevoltage classifications. It is the combination ofinstallation category and voltage classificationwhich determines the maximum transientwithstand capability of the instrument.IEC 61010 test procedures take into accountthree main criteria: steady-state voltage,peak impulse transient voltage and sourceimpedance. These three criteria together willtell you a multimeter’s true voltage withstandvalue.Figure 1. Understanding categories: locationof the 12 Ω test source for CAT II. The CAT III600 V meter clearly offers superior transientprotection compared to the CAT II 1000 Vmeter, even though its so-called “voltagerating” could be perceived as being lower. SeeTable 2.Independent testing is the key to safetycomplianceHow can you tell if you’re getting a genuineCAT III or CAT II meter? Unfortunately it’snot always that easy. It is possible for amanufacturer to self-certify that its meteris CAT II or CAT III without any independentverification. The IEC (InternationalElectrotechnical Commission) develops andproposes standards, but it is not responsiblefor enforcing the standards. Look for thesymbol and listing number of an independenttesting lab such as UL, CSA, VDE, TÜV or otherrecognized approval agency.These symbols can only be used if the productsuccessfully completed testing to the agency’sstandard, which is based on national andinternational standards. UL 3111, for example,is based on EN61010-1. In an imperfect world,this is the closest you can come to ensuringthat the meter you choose was actually testedfor safety.Within a category, a higher working voltage”(steadystate voltage) is associated with ahigher transient, as would be expected. Forexample, a CAT III 600 V meter is testedwith 6000 V transients while a CAT III 1000 Vmeter is tested with 8000 V transients.So far, so good. What is not as obvious is thedifference between the 6000 V transient forCAT III 600 V and the 6000 V transient forCAT II 1000 V. They are not the same. This iswhere the source impedance comes in. Ohm’sLaw (Amps Volts/Ohms) tells us that the 2 Ωtest source for CAT III has six times the currentTable 18Overvoltage categoryCAT IVIn briefThree-phase at utility connection,any outdoor conductorsCAT IIIThree-phase distribution, includingsingle-phase commercial lightingCAT IISingle-phase receptableconnected loadsCAT IElectronicExamples Refers to the “origin of installation”; i.e., where low-voltage connection is made to utility power. Electricity meters, primary overcurrent protection equipment. Outside and service entrance, service drop from pole to building, run between meter and panel. Overhead line to d etached building, underground line to well pump. Equipment in fixed installations, such as switchgear and polyphase motors. Bus and feeder in industrial plants. Feeders and short branch circuits, distribution panel devices. Lighting systems in larger buildings. Appliance outlets with short connections to service entrance. Appliance, portable tools, and other household and similar loads. Outlet and long branch circuits. Outlets at more than 10 meters (30 feet) from CAT III source. Outlets at more than 20 meters (60 feet) from CAT IV source. Protected electronic equipment. Equipment connected to (source) circuits in which measures are taken to limit transient overvoltagesto an appropriately low level. Any high-voltage, low-energy source derived from a high-winding resistance transformer, such as thehigh-voltage section of a copier.Overvoltage installation categories. IEC 61010-1 applies to low-voltage( 1000V) test equipmenthttp://www.elso.sk

riešenia na presné meranieFluke: Where safety is built inSafety is everyone’s responsibility butultimately it is in your hands.No tool by itself can guarantee your safetywhen working with electricity. It’s thecombination of the right tools and safework practices that gives you maximumprotection. Here are a few tips to help youin your work:Make sure you always comply with (local)regulations.Work on de-energized circuits wheneverpossible.Use proper lock-out/tag-out procedures. If theseprocedures are not in place or enforced, assumethat the circuit is live.Use protective gear when working on livecircuits: Use insulated tools Wear safety glasses or a face shield Wear insulated gloves, remove watches orjewelry Stand on an insulated mat Wear flame resistant clothing, not ordinarywork clothesSelect the right test tool:Inspect and test your test tool: Choose a test tool rated to the highestcategory and voltage for which it couldpossibly be used (most often 600 or 1000volt CAT III and/or 600 volt CAT IV). Look for the category and voltage markingnear the recessed input connectors of yourtest tool and a “double insulated” symbolon the back. Verify your test tool has been tested andcertified by two or more independenttesting laboratories, such as UL in theUnited States and VDE or TüV in Europe bylooking for the symbols of these agencieson (the back of) your test tool. Make sure that the test tool is made ofa high-quality, durable non-conductivematerial. Check the manual to verify that theohms, continuity and capacitance circuitsare protected to the same level as thevoltage test circuit, to reduce hazardswhen the test tool is used incorrectly inohms, continuity or capacitance mode (ifapplicable). Verify that the test tool has internalprotection to prevent instrument damagewhen voltage is incorrectly applied toan amperage measurement function (ifapplicable). Make sure that the amperage andvoltage of your test tool’s fuses meetsspecifications. Fuse voltage must be as highor higher than the test tool’s voltage rating. Be sure to use test leads that have:- Shrouded connectors- Finger guards and a non-slip surface- Category ratings that equal or exceedthose of the test tool- Double insulation (look for the symbol)- A minimum of exposed metal on theprobe tips Check for a broken case, worn test leads ora faded display. Make sure the batteries still deliversufficient power to get reliable readings.Many test tools have a low battery indicatoron the display. Check the test leads resistance for internalbreaks while moving the leads around(good leads measure 0.1-0.3 Ohm). Use the meter’s own test capability toensure that the fuses are in place andworking ri

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