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Awardwinningproduct
Power cable fault locators
Van mountable solutions
Pinpointer fault locators
Cable locators and route tracers
TDRs (Power and Telecom)
Insulation testers
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Cable fault locating made easy with the Megger range
Cable fault location has often been seen as a darkart, as the causes of faults are different and varied.Successfully locating faults locations depends on anexperienced operator. The challenge to Megger’sengineering team was to remove the mysteries fromfault locating, and to make the whole process morelogical. This methodical approach was used to definea feature set that would satisfy fault location needsin the varied conditions where the tester would beused around the world.
These are the vital steps for successful and rapidfault location:
Analysis
Fault conditioning
Fault position pre-location
Fault pinpoint location
Restoration
PFL systems come as compactmobile, field proven units,configured to meet your localrequirements. All PFL systems satisfythe “Megger logical approach” to cable fault location:■ Cable and fault diagnosis
■ Prelocation of cable faults
■ Fault conditioning
■ Pinpoint fault locating using acoustic methods
Models PFL40A-1500 and PFL40A-2000Features include DC testing to 40 kV up to 25 mAA 40 kV DC testing capability is used to prove the integrityand confirm fault conditions in cable networks.
The variable output voltage can also be used to test sheathsrequiring 5 or 10 kV test voltages.
The operator selectable over-current trip provides protectionto the system under test in the event of a breakdown of thecable under test, or excessive leakage current.
Fault pre-locationEach system provides a variety of low and high voltagemethods that you can use to pre-locate the fault position.
The TDR mode – (Pulse Echo) uses a real time trace and astored trace for viewing simultaneously on the large colourdisplay, allowing comparison and difference measurementsto be determined.
The large screen colour Megger TDR1 features auto-ranging, auto distance to fault, intuitive software andoperator assist functions that guide the operator throughthe fault locating process.
Arc reflection method – the 8/16/34kV system stabilisesfaults by creating a temporary “carbon bridge” to earth.The arc establishes a short circuit after which a pulse echomeasurement defines the distance to the fault. Themeasurement is then compared to a healthy phase.
ICE (impulse current) and Voltage Decay methods –these well known transient analysis methods of prelocationare also available, utilising either the integrated linearcoupler or an external voltage divider.
Fault conditioningBy employing Arc Reflection or Proof/Burn techniques theoperator can stabilise flashing, unstable or high resistancefaults allowing the location of the more difficult faults.
Proof/Burn Following a breakdown of the cable under test, you canemploy the 34 kV dc output to apply a high current, thusstabilising a flashing or unstable the fault condition. Thisallows pre-location of the more difficult fault conditions.
Acoustic Pinpoint Fault LocationAccurate acoustic pinpoint location of faults is achievedwith the powerful 8/16/34 kV (4 kV optional). The surgegenerator (thumper) can be supplied in either 1500 Joulesor 2000 Joules configurations.
The Megger MPP range of pin pointers is used to pick-upthe audio and electromagnetic signals generated at thepoint of breakdown by the surge generator (thumper).
Additional accuracy can be achieved by adding additionalground microphones (detectors) to the standard MPP1000.These additions convert the standard system to a MPP1000or MPP1002 which accurately displays the direction anddistance to the fault.
Included accessoriesEach PFL40 unit comes complete with:■ High voltage shielded output cable (15 m)■ Supply cable (7.6 m)■ Flexible ground cable (15 m)■ Earth/ground rod■ Interlock shorting plug■ Quick start guide (in lid)■ Cable bag and user guide■ Stand-alone and rack-mounted cable reel assemblies are available
as options.
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Designed to the same demanding criteriaas the PFL40A, the PFL20M-1500 findsfaults quickly, accurately and safely.■ Multiple fault locating techniques
■ Arc reflection method■ Pulse echo■ Impulse current■ Proof and burn
■ Highly portable, rugged and weatherproof
PFL20M-1500Features include DC testing to 20 kV up to 60 mA used toprove the integrity and confirm fault conditions in cablenetworks.
The PFL20M-1500 includes outstanding new featuresincluding a simple-to-operate TDR built into the lid and a newinductive arc reflection filter. The optional on-board inverterprovides the user with a choice of input power options.
The PFL20M-1500 combines all the tools necessary to performaccurate cable fault location, including dc tester/burner, surgegenerator and TDR. These tools enable the user to effectivelyperform all of the following fault location techniques:■ Time domain reflectometry (pulse echo)■ Arc reflection method■ Impulse current■ Pinpoint fault location using the acoustic method
Features included■ d.c. testing (proof/burn) up to 20 kV with a maximum
current of 60 mA. Used for cable testing and theconditioning of faults.
■ Pulse echo - use a real time trace and a stored trace forviewing simultaneously on the colour display, allowingcomparison and difference measurements to be determined.Features auto-ranging, auto distance to fault and operatorassist functions that guide the operator through the faultlocating process.
■ 16 kV 1500 Joule surge generator (thumper) used ingenerating a breakdown at the point of fault.
■ Impulse current (ICE) method – a well-known high voltageprelocation method.
■ Arc reflection method – the 16 kV system stabilises a faultby creating a temporary “carbon bridge” to earth. The newinductive filter ensures maximum energy is available at thepoint of fault, overcoming some of the inherent lossesassociated with some arc reflection systems.
■ Acoustic pinpoint fault location – utilising the powerfulsurge generator and an MPP pin pointer, the exact positionof faults is achieved.
The PFL is field-portable. A built-in inverter provides a choiceof input power options. It is also ruggedly constructed andweatherproof to IP54 specifications.
The PFL20M-1500 is specifically designed to provide a fast,accurate and safe method for locating faults in undergroundcable networks.
Its compact size makes the PFL20M-1500 suitable for use as astand- alone unit, which can be easily transported on to site.
The unit can be operated from the mains, battery or 12 Vinverter. The enclosure is weatherproof for use in a variety ofinclement weather conditions.
CFL40A - van mountable option (available 2008)
The new CFL40A has beendesigned to complement thealready acclaimed andsuccessful PFL40A series ofportable fault locators.
The MTDR and all controlfunctions have been installedin a newly designed remotepanel, connected to the HVunit by a flexible umbilical.This configuration lends itselfto installation into a suitablevehicle by the customer, orMegger.
Megger will be providing a full installation and fittingservice throughout Europe.
Artist impression of the CFL40A
One of the new features of thePFL20M-1500 is the lid-mountedMTDR that offers multiple testmodes and simple, easypushbutton operation.
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TDRs and Cable locators
TDR1000/2P■ Simple operation■ Fast fault find facility■ TX Null transmission pulse
nulling■ Adjustable cable impedance■ No blocking filter required■ IP54 rating■ 3 year warrantyThe TDR1000/2P is a hand held, compactTime Domain Reflectometer for locatingfaults on metallic cables. It has a minimumresolution of 0.1 m/0.3 ft and a 3 km/9 kftmaximum range depending on Velocityfactor selected and cable type.
Four output impedances are available (25,50, 75, and 100 ohms) and a velocity factor
between 0.2 and 0.99 will meet any cabletest requirements.
Control of the TDR1000/2P has beensimplified with each key having a dedicatedfunction, such as cursor left and right,velocity factor, range, etc. Training times aredramatically reduced, and with less chanceof time-consuming mistakes, productivity isimproved.
TX Null eliminates the ‘dead zone’ at thestart of the displayed trace, normallyobscured by the transmission pulse. Byadjusting the TX Null control the user cansee these ‘near end’ faults clearly.
One press of the find key automaticallyadjusts the range and gain, and positionsthe cursor to the major event on the cablewithin seconds, removing the need for theengineer to gradually scroll through theranges looking for the fault or the end ofcable reflection.
TDR2000/2P■ 20 km range at VF = 0.90■ Monochrome or colour
options■ Primary cell or rechargeable
options■ Large back lit LCD display■ Dual cursor measurement■ Intermittent fault location■ Output pulse amplitude and
width control■ "TX Null" technology■ No blocking filter required■ Trace Master PC software
included■ 15 memory trace storage
The TDR2000/2P is a state of the art,monochrome or colour, dual channel TimeDomain Reflectometer, capable ofidentifying and locating a wide range offaults on metallic cables.
The TDR2000/2P has a minimum resolutionof 0.1m and a maximum range of 20 km atVF=0.9 and 16 km at 0.65 VF. TheTDR2000/2P can perform single or dualchannel measurements on a wide range ofmetallic cables. Active channels can becompared with each other or withpreviously stored traces from memory.Differential channel measurements arepossible and cross talk between channelscan also be identified.
All results are displayed on a highresolution, QVGA colour display. Fullcontrast adjustment provides optimumdisplay contrast in a variety of ambient lightconditions.
TDR900■ Fully auto ranging for
measuring the length ofpower, telephony, CATIV andLAN cables
■ Extra large, high resolutionbacklit LCD
■ Cable length calibrationfunction
The TDR900 is an advanced instrumentcapable of measuring cable lengths andfinding distance to an open or a short usingTime Domain Reflectometry. It offers
exceptional features and a range ofcapability normally associated with far moreexpensive instruments.
The measurement range spans from 5 m(15 feet) to 3 km (10.000 feet) with aminimum resolution of 50 cm (20 inches).
The TDR900 can be used for any cableconsisting of at least two insulated metallicelements, one of which may be the sheathor shield of the cable. The meter hasautomatic internal matching networks toallow testing of 25, 50, 75, 100, 125, or150 Ω cables. (These correspond to power,telephony, CATIV and LAN cables).
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L1070Unparalleled in capability, the L1070 Portable Locatorlocates buried cable and pipe in various situations. Capableof locating over long or short distances, inductive orconductive, active or passive, the L1070 delivers quick andaccurate results with a user-friendly interface.
Operating the receiver at multiple frequencies optimisesperformance for the specific needs of the user. Lowfrequency of 815 Hz provides longer range and reducederrors from adjacent cables, which is ideal for electric powerservices.
The 82 kHz range gives you the ability to locate bad pathsin telecom networks. You can locate underground tee-jointsand perform induction location using either a flexiblecoupler (optional extra) or the transmitter itself.
MTDR1The MTDR1 is a modern, digital TDR designed to pre-locatecable faults on underground systems. It incorporatesWindowsTM based software and an ergonomically designedfront panel for easy operation.
MTDR features:
■ Large colour VGA display
■ Auto-ranging and auto-distance to fault
■ Operator assist mode
■ Pulse echo modes
■ Impulse current (ICE)
■ Voltage decay
■ Arc reflection
■ Internal memory
■ Output to printer or USB
■ Qwerty keyboard for report generation
In normal pulse echo and arc reflection mode, the MTDRfeatures auto-ranging, auto fault distance and an assistfunction guiding the operator through the fault locatingprocess. COMLink communication software is included fortransferring cable images between the MTDR and apersonal computer.
The report screen shows the capability of creating aprintable report with specific customer required data.
A special design feature on the L1070 allows the user toselect and compare receiver information on two frequenciessimultaneously, without having to return to the transmitter.Excellent passive 50/60 Hz locating will pinpoint activepower lines and other utilities where AC is present withoutthe use of the transmitter.
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d.c. proof and insulation resistance testing equipment
MIT310 AThe Megger MIT310A has a moving coildisplay for those who prefer a real movingneedle. Black decals on a white backgroundgive high contrast, even in poor lightconditions.
Designed to take the bashing that testersreceive on site, the Megger MIT insulationtesters are rubber armoured.
The rigid display cover folds right out of theway during testing and locks down toprotect the display when it is finished.
No buried functions means it is obvioushow to use the Megger MIT.
Colour coded ranges help test selection,reducing testing time and helping with faultlocation.
Safe contact detectors – even if the MIT isconnected to a live circuit whilst oncontinuity setting, the tester will remain safeand is not damaged.
220005/2200155 kV and 15 kV d.c. dielectric test set■ Continuously variable test
voltage
■ Rugged field construction
■ Compact and portable
Dielectric test sets measure leakage currentwhile applying a dc voltage at or above theinsulation system’s operating level.
This measurement aids in determining theinsulation system’s ability to withstandovervoltages such as lightning strikes andswitching surges.
220000 series70 kV/ 120 kV and 160 kV d.c.dielectric test set
Available in analogue and digitalmodels
■ Lightest weight available in air-insulated high-voltage model
■ Advanced performance withlong-term reliability provided byfiltered half-wave rectification
■ Designed for maximum operatorsafety
220000 series provides a dependable, safe,lightweight and portable d.c. voltage sourcefor testing the quality and integrity ofelectrical power cables, cable installations,motors, switchgear, insulators, transformersand capacitors.
Hinged lid
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MIT410This stylish tester is not designed for its visual impressionbut for pure practicality. The tapered handle is comfortable,and lets the user use either hand.
The safety rating of CAT IV 600 V combined with functionssuch as TRMS voltage measurement, polarisation index (PI),dielectric absorption (DAR) and frequency measurementmakes this an ideal tester.
MIT510This 5 kV insulation resistance tester is easy to operate andis very tough. It allows automatic IR. The built-in timer andhigh test ranges allow simple and quick evaluation of thecondition of the insulation under test. The MIT510 is bothmains or battery powered.
MIT10205 kV insulation resistance tester offers the ability to testinsulation to 10 kV, to comply with IEEE43:2000. It allowsautomatic IR, PI, DAR, SV and DD tests. Results storage anddownload give full diagnostic information for later analysis.
The MIT1020 can be powered using either mains or its on-board re-chargeable battery.
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Copyright © 2007 Megger Limited Archcliffe Road Dover CT17 9EN Printed in the UK BP/5K/1 Ed. Part No 80071
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Hand-held transformer testersMegger’s transformer testers are lightweight and tough,with all the functionality you need for rapid testing.
The TTR25 is an automatic transformer ratio test set and theTTR100 is capable of testing three-phase.
