Transformer testing equipment

Transcription

1 Trasformer testig equipmet

2 Megger - leaders i trasformer testig The first isulatio test set Megaohm meter was iveted by Sydey Evershed (Evershed & Vigoles Limited). The MEGaohm meter was braded as Megger i Sice bradig, Megger has grow ad evolved to become the leadig maufacturer of portable substatio testig equipmet. Isulatio testig ad the word Megger are syoymous i the electrical test idustry, a positio oly maitaied by cotiually desigig world class products. Asset maagemet pla Trasformers have the sigle highest value of the equipmet istalled i substatios reachig 60% of the total ivestmet. Asset maagers are costatly uder pressure to improve the fiacial ad techical performace of trasformers, which has pushed utilities to assess the actual coditio of their trasformers. Coditio assessmet cotributes to achievig the optimal balace betwee maiteace costs ad operatig performace ad provides asset maagers the ecoomic ad techical justificatios for egieerig decisios ad capital replacemet plas. Complete trasformer testig toolbox There are several facets to a trasformer s overall health, so a full assessmet requires a umber of tests. Megger offers the broadest rage of trasformer test equipmet i the idustry, capable of deliverig the most comprehesive picture of trasformer health. Our istrumets eable routie ad advaced electrical testig techiques described ad recommeded i iteratioal stadards such as IEEE, IEC ad CIGRE. Moreover, our istrumets ad software tools are user-friedly, highly accurate ad reliable to facilitate the maagemet of your etire electrical testig program for power, distributio ad istrumet trasformers. Maiteace strategy ad coditio assessmet actios differ from utility to utility but the wellaccepted tests that are useful as diagostic methods are listed i the table (overleaf). Sydey Evershed s Megaohm meter (1895). 2 Trasformer test equipmet

3 First isulatio test set iveted by Sydey Evershed Megger trademark registered First multimeter with Amps, Volts ad Ohms (AVO) First low-weight ta delta/power factor isulatio test set First trasformer ohmmeter with tapchager discotiuity detectio Merger of the Megger Group (Megger, Biddle, Multi-Amp) First dyamic resistace measuremets for o-load tap-chagers First dielectric frequecy respose aalyzer for isulatio diagostics i the field First portable 30 kv isulatio test set Megger patet o idividual temperature correctio of measured ta delta/power factor values Megger patet o automatic detectio of ta delta/power factor voltage depedece First 5 kv ad 10 kv isulatio resistace tester with 4 ma oise rejectio ad firmware filterig First 15 kv isulatio resistace tester with 8 ma oise rejectio ad 5% accuracy up to 3 TΩ First multifuctio trasformer ad substatio test system with apps-based user iterface 3

4 Megger - leaders i trasformer testig TEST TYPES MEGGER TEST SETS COMPONENT TEST TRAX Delta IDAX CDAX S1/MIT FRAX MWA TTR MTO Widigs Resistace Ratio / polarity Excitatio curret Short-circuit impedace Frequecy respose aalysis FRSL Isulatio resistace Capacitace Power factor / ta delta Dielectric frequecy respose Magetic balace Bushigs Capacitace Power factor / ta delta Dielectric frequecy respose Bushig CT s Isulatig oil Dielectric stregth Power factor / ta delta Cellulose isulatio Moisture cotet Resistace Tap chagers Load/OLTC No-load/ DETC Dyamic resistace Excitatio curret Ratio Cotiuity (make before break) Cotact timig (DRM) Resistace Excitatio curret Ratio Core / Tak Core isulatio Excitatio curret Magetic balace Frequecy respose aalysis Groud coectio Coectios Cotact resistace Page umber Trasformer test equipmet

5 MRCT OTS MOM DLRO

6 TRAX Apps for various measuremets/applicatios TRAX Power trasformers Load tap-chagers Reactors Trasformer ad substatio test system The TRAX trasformer ad substatio test system is desiged to be a complete solutio i trasformer testig. TRAX is a multi-fuctioal test system that replaces umerous idividual testig istrumets for testig of trasformers ad other system compoets addressig the eed for a sigle test system capable of performig multiple tests. Testig with TRAX is a time savig ad cost effective alterative to usig separate istrumets. TRAX provides up to 800 A ad 2200 V test sigals (2000 A ad 12 kv with accessories) with a frequecy rage adjustable from 5 to 500 Hz (1-500 Hz for isulatio testig). These variable levels of voltage ad curret ca be geerated ad measured with Istrumet trasformers Bushigs Circuit-breakers Protectio relays Groudig systems high precisio, allowig TRAX to be used for testig of turs ratio, excitatio curret, widig ad cotact resistace, impedace, ta delta/power factor ad various primary tests for LV, MV ad HV electrical apparatus. The user iterface allows full maual cotrol where the user defies a specific test setup. Alteratively, a variety of idividual istrumets/apps are available to perform differet tests like widig resistace, turs ratio, impedace measuremets, relay testig, circuit breaker aalysis ad more. The tests measuremets ca be orgaized ad reported as separate tests or as a combied full set of test results for the same asset. TRAX ca be used with a itegrated touch scree or exteral computer device with a Chrome web browser. 6 Trasformer test equipmet

7 TRAX Trasformer ad substatio test system Widig resistace Demagetizatio Load tap-chager (OLTC) cotiuity ad dyamic resistace Turs ratio Excitatio curret Short-circuit impedace (Leakage Reactace) FRSL (frequecy respose of stray losses) Optioal switchbox for oe-time 3-phase coectio Magetic balace CT testig VT testig Voltage withstad Circuit breaker Sigle-phase relay Groud/ earth/ impedace Ta delta/ power factor ad capacitace TDX120 accessory for ta delta/power factor ad capacitace measuremets TRAX SPECIFICATIONS Iput Power V ± 10 %, 50/60 Hz Output Voltage 0 to 250 V AC 0 to 2200 V AC 0 to 12 kv AC (with TDX optio) 0 to 300 V DC Output Curret 0 to 10 A AC 0 to 200 A AC (TRAX 220) 0 to 800 A AC (TRAX 280) 0 to 2000 A AC (with TCX optio) 0 to 100 A DC Frequecy Rage Hz (1-500 Hz for isulatio testig) Output cotacts 2, for tap-chager ad circuit breaker operatio Measuremet Iteral measuremets o output geerators chaels ad output cotacts 4 x multi-purpose voltage/curret measuremet 2 x DC voltage for resistace measuremets 1 x trasducer iput 3 x timig 1 x trig iput 3-phase oe-time With TSX optio coectio Ta delta ad capacitace measuremets With TDX optio Weight 26 kg (TRAX 220) 29 kg (TRAX280) 7

8 DELTA Series Ta delta / power factor test set Accurate measuremets i high oise ad HV eviromets Lightweight two-piece desig, 14 kg ad 22 kg Automatic voltage depedecy detectio Idividual Temperature Correctio (ITC) Dielectric frequecy respose (1-500 Hz) The DELTA 4000 Series is a fully automatic 12 kv isulatio power factor/dissipatio factor (ta delta) test set desiged for coditio assessmet of electrical isulatio i high voltage trasformers, bushigs, ad surge arresters. The DELTA 4000 Series ca be used to measure the excitatio curret of trasformer widigs as well as to perform automatic tip-up tests for dry type trasformers ad HV turs-ratio testig (usig a optioal TTR capacitor). This state of the art istrumet utilizes a pateted method for temperature correctio (ITC) versus ow ivalidated temperature correctio tables. Additioally, the measuremet is moitored ad whe possible voltage depedece is detected, the user is prompted to perform ta delta/power factor tip-up measuremets. The Delta 4110 requires a exteral computer to cotrol it. The Delta 4310 has a oboard computer but ca also be cotrolled exterally. DELTA SPECIFICATIONS Iput Power V ± 10 %, 50/60 Hz, 16 A max Output Voltage 0 to 12 kv Test Frequecy Rage 1 to 500 Hz Output Power 3.6 kva Output Curret 300 ma MEASURING RANGES Capacitace: 0 to 100 uf Iductace: 6H to 10 MH Watts: 0 to 2000 W ACCURACY Capacitace: +/-0.5 % Rdg +/-1pF PF & DF: +/-0.5 % Rdg +/-0.02 % PHYSICAL Weight 14 kg + 22 kg = 36 kg 8 Trasformer test equipmet

9 Back CDAX Frot High precisio capacitace ad dissipatio factor test set Very high accuracy ad wide measuremet rage CDAX is a precisio istrumet that combies a bridge ad direct (vector) capacitace ad dissipatio factor test set to be used with a exteral AC power source ad a stadard capacitor to form a complete measuremet setup for capacitive, resistive ad iductive loads. CDAX 605 is desiged for laboratory ad productio lie testig of electrical equipmet isulatio ad isulatig materials as well as calibratio of CCVTs ad other precisio ratio devices. Testig ca be performed at almost ay voltage level depedig o the ratig of the equipmet, the power source ad the capacitor. Fast ad automated measuremet process with direct readigs of results Measures capacitace, resistace ad iductace i combiatio High accuracy ratio measuremets with direct readig of measured ratio ad phase deviatio Optioal LabView ad C# iterface The uit will accept a test curret up to 5 A from the specime uder test which ca be icreased by usig a exteral curret trasformer. CDAX SPECIFICATIONS Test voltage Pedig geerator, stadard capacitor ad test object Test frequecy rage 5 to 400 Hz Referece ad test curret 15 µa to 5 A MEASUREMENT RANGE Rage limit is give by test curret ad voltage of used power source Capacitace accuracy 0.02 % Dissipatio factor accuracy 0.05 % of readig % Phase accuracy 0.02 mrad Recorded values Curret, voltage, capacitace, iductace, resistace, ta delta, phase, ratio PHYSICAL Weight 4.4 kg The iput voltage to the device ca be measured with a traditioal referece capacitor while the secodary low voltage ca be measured with a calibrated resistive divider such as the CRD 605 accessory. A CDAX test istrumet replaces traditioal bridges ad has a uique fully automated test process elimiatig time cosumig maual balacig. The uit is ideal for use i a maufacturig eviromet where results are stored such as i Labview or C#. 9

10 IDAX300/350 Dielectric respose ad moisture aalysis Automated measuremet ad aalysis of moisture cotet, oil coductivity ad ta delta/power factor Idividual temperature correctio (ITC) of ta delta/power factor ad oil coductivity DFR measuremets with AC test sigals for reliable measuremets i high - iterferece eviromets New multi-frequecy techique performs a complete isulatio assessmet i 22 miutes also suitable for use for bushigs, curret trasformers, voltage trasformers ad virtually ay other electrical compoet where ta delta ad capacitace measuremets are eeded. All IDAX models have three measuremet iput chaels ad ca be equipped with two separate ammeters eablig two completely idepedet measuremets at the same time, thus miimizig test time. IDAX provides fast ad accurate dielectric frequecy respose measuremets for isulatio assessmet icludig moisture cotet i the solid isulatio, coductivity of the oil, power frequecy ta delta ad capacitace. Usig true AC dielectric frequecy respose, IDAX gives reliable results eve uder high iterferece coditios ad with the ew multifrequecy techique, it is also the fastest istrumet o the market. IDAX provides other test fuctios icludig excitatio curret, hot collar testig ad DC isulatio. The uique dielectric respose of the isulatio system ca be coverted ito the thermal respose of that specific compoet. I additio to power trasformers, it is IDAX SPECIFICATIONS Output voltage (V peak) 0 to 10 V, 0 to 200 V, 0 to 2000 V (with VAX 020) Output curret 0 to 50 ma Frequecy rage DC to 10 khz Measuremet chaels 3, Red, Blue ad Groud Ammeters 1 (IDAX 300) or 2 (IDAX 300S ad 350) Max AC iterferece 1 1:10 SNR, (50/60Hz) Idividual temperature Ta delta/power factor to 20 C correctio (0.1, 1, 10 Hz or lie frequecy) Oil coductivity to 25 C referece Test time for moisture 12 mi, 2 mhz to 1 khz, 30 aalysis to 45 C isulatio temp 22 mi, 1 mhz to 1 khz, 20 to 30 C isulatio temp 43 mi, 0.5 mhz to 1 khz, 10 to 20 C isulatio temp Istrumet cotrol Exteral PC (IDAX 300 ad IDAX 300S) Iteral or exteral PC IDAX 350 PHYSICAL Weight IDAX 300 IDAX 350 Accessories 4.9 kg (11 lbs), 9.9 kg (22 lbs) icl. flight case 13.5 kg (29.8 lbs) 8.5 kg (18 lbs) soft bag 10 Trasformer test equipmet

11 VAX020 High voltage amplifier High voltage amplifier eables IDAX measuremets at 2 kv test voltage Large frequecy rage, DC to 1 khz Compact desig, weight oly 4.4 kg The testig capabilities of IDAX are exteded with the additio of the high voltage amplifier VAX020. The voltage output icremet from 200 V up to 2 kv (peak) is the most assertive solutio to challegig DFR measuremets i high iterferece eviromets (e. g. HVDC substatios) or while measurig at very low frequecies o low capacitace objects (e.g. bushigs ad istrumet trasformers). VAX020 allows ot oly HV DFR measuremets but also measuremet of excitatio curret, capacitaces up to 80 F at 50 Hz (67 60 Hz) ad hot collar testig at 1.4 kv (RMS). IDAX together with VAX ca also be used for DC isulatio resistace measuremet (icludig polarizatio idex ad dielectric absorptio ratio) at 2 kv. VAX020 SPECIFICATIONS Output voltage (V peak) Output curret Frequecy rage Max AC iterferece (50/60Hz) 0 to 2000 V 0 to 50 ma DC to 1 khz 10 1:10 SNR Max DC iterferece 20 µa PHYSICAL Weight 4.4 kg 11

12 S1 ad MIT Series High curret isulatio resistace tester Isulatio testig up to 15 kv Resistace rage up to 30 TΩ Operate from rapid charge Li-io battery or AC source Advaced memory with time/date stamp Uique tough dual-case desig providig additioal user protectio Safety rated up to CAT IV V up to 4000 m altitude Stable readigs i oisy eviromets S1 ad MIT Series high curret isulatio testers are ideal for trasformer testig, cable, geerator/motor, circuit breaker ad geeral purpose testig. The products, depedig o model, are packed with features such as IR, timed IR, polarisatio idex, dielectric absorptio ratio ad more. The models iclude rapid charge batteries ad operatio from a AC source whe the battery is dead. The S1 Series offers class leadig charge curret, oise rejectio ad software filters, makig them Megger s most advaced DC isulatio resistace testers to date. Test reports ca be created usig test data by dowloadig iformatio from the istrumet memory or charts from real-time data. A rage of high voltage test lead optios are available with large or medium clips ad i legths 3 to 15 m depedig o model. S1 AND MIT SPECIFICATIONS MIT515 MIT525 MIT1025 MIT1525 S1-568 S S Maximum test voltage 5000 V 5000 V V V 5000 V V V Maximum test curret 3 ma 3 ma 3 ma 4 ma 6 ma 6 ma 6 ma Noise rejectio 3 ma 3 ma 3 ma 4 ma 8 ma 8 ma 8 ma PC Remote cotrol & Bluetooth Step voltage, ramp & DD tests 12 Trasformer test equipmet

13 FRAX Collectig figerprit data usig Frequecy respose aalysis (FRA) is a easy way to detect electro-mechaical problems i power trasformers ad a ivestmet that will save time ad moey Sweep frequecy respose aalyzer Highest accuracy ad dyamic rage i the idustry Complies with ad exceeds iteratioal stadards for sweep frequecy measuremets Smallest ad most rugged sweep frequecy aalyzer o the market Advaced aalysis ad decisio support built-i to the software. Extesive file import-export capabilities icludig CIGRE ad xml formats The FRAX series of sweep frequecy respose aalyzers is based o comparative aalysis where a measuremet is compared to a referece figerprit. FRAX SPECIFICATIONS Output voltage 20 V (FRAX 99) V (FRAX 101 ad 150) Measuremet voltage Ω (FRAX 99) Ω (FRAX 101 ad 150) Frequecy rage 0.1 Hz 25 MHz Frequecy sweep settigs Low to high or high to low, logarithmic or liear Number of poits Default 1046, user selectable up to Dyamic rage (IEC > 150 db (FRAX 101 ad 150) 18) (+ 10 db to iteral > 130 db (FRAX 99) oise level) Accuracy ± 0.1 db from +10 db to -50 db ± 0.5 db from +10 db to -100 db (FRAX 101 ad 150) ± 1 db from +10 db to -100 db (FRAX 99) Aalysis Magitude Phase Impedace Admittace Iductace Resistace User defied formulas to Cross-correlatio (CCF), as i the list of aalysis tools DL/T or customer defied The superpositio of curves is a direct idicatio whether geometrical ad/or electrical chages have take place withi the trasformer. The measuremet is easy to perform capturig a uique figerprit of the trasformer. All FRAX models fulfill ad exceed sweep frequecy respose specificatios i iteratioal stadards icludig IEC , IEEE C57.149, CIGRE 342 ad DL/T-911. FRAX 99 is the base model; FRAX 101 allows for larger dyamic rage measuremets ad wireless commuicatio; ad both uits are operated from a PC. FRAX 150 has the same specficatios as FRAX 101 but has a iteral computer. A powerful software iterface will guide the users step by step i the measuremet process, miimizig testig time ad esurig accurate ad repeatable measuremets. 13

14 MTO Widig Resistace Testig Simultaeous 4 widig measuremets OLTC make before break detectio Computer or maual cotrol with iteral memory Readig stability idicator detects whe readigs have stabilized MTO series of istrumets offer accurate ad fast widig resistace test times usig a sigle curret source for four simultaeous measuremets miimizig testig time. For testig LV delta widigs (>1000 A) where test times for each tap reach up to 15 miutes each, MTO250 offers a 50 A test curret reducig testig time dow to secods. The 3 phase leads set of our MTO 300 is fully iterchageable with TTR series Istrumets, thereby miimizig testig times whe both measuremets are used together. MTO A, Sigle-phase, 2 ch, maual MTO A, Sigle-phase, 2 ch, maual or PC cotrol MTO300/330 3-Phase/6-widig measuremets, 10 A, stad-aloe or remote cotrol MTO SPECIFICATIONS Output curret Up to 10 A DC (MTO210 ad 300) 50 A DC (MTO250) Ope-circuit voltage Resistace: Accuracy: Resolutio: MTO210: 40 V DC MTO250: 50 V DC MTO300: 40 V DC 10 μω to 2000 Ω (MTO210 ad 300) ±0.25 % readig, ±0.25 % full rage scale whe curret has stabilized Readigs: 4 digitscurret: 6 digits 14 Trasformer test equipmet

15 TTR 3-Phase trasformer turs ratio test sets TTR series of istrumets are desiged for accurately measurig the turs ratio of sigle ad three phase, two ad three widig power CTs, VTs, PTs ad phase shiftig trasformers. Accurately measures ratio, excitatio curret, phase deviatio as well as phase shift of phase shiftig trasformers. Built i storage ad dowloadig test results i CSV format or to PowerDB software. Works maually or automatically with ad without PC TTR istrumets make testig easy with quick test mode (where little ameplate iformatio is required) or automatic mode where a trasformer ameplate iformatio is etered ad all taps ad widigs ca be tested sequetially tap by tap ad phase by phase. Results are stored ad/or dowloaded to a test report format or CSV file for easy pritig. For optimum efficiecy ad safety, the leads used i the TTR 3XX series ca be used with the Megger widig resistace uits (MTO 3XX) where climbig up ad dow ladders to reach bushigs is doe oly oce. Test leads ca be used with Megger MTO 3XX widig resistace ohmmeters for more efficiet ad safer test practices oly oe ladder climb for 2 differet tests. TTR SPECIFICATIONS MODEL FEATURES DISPLAY KEYBOARD INTERNAL RATIO PRINTER TTR25 Sigle phase, hadheld, battery B/W LCD Alpha-umeric No RS232 20,000:1 TTR100 Sigle phase, hadheld, B/W LCD Alpha-umeric No RS232 20,000:1 rechargeable battery, automatic phase compariso TTR300 3 phase, portable, remote PC Noe, exteral Noe, exteral No 45,000:1 operated computer cotrol computer cotrol TTR310 3 phase, portable, scree 5 B/W alphaumeric Alpha-umeric Yes 45,000:1 operated TTR330 3 phase, portable, QWERTY keyboard ad coloured scree 8.4 color VGA Qwerty Yes 45,000:1 15

16 MWA 3-Phase Ratio ad Widig Resistace Aalyzer All trasformer types ad sizes with ad without OLTC tap chagers All geerators & motors Bus bar coectios, circuit breakers cotacts The MWA3xx is desiged to test power, istrumet, ad distributio trasformers i high oise, harsh outdoor eviromets or i a idoor maufacturig process. It is ideal for testig complex 3-phase trasformers (with tap chagers, bushig CTs, ad tertiaries) i a fractio of the time take with traditioal test equipmet. Testig icludes: Ratio Widig resistace, Demagetizatio, Polarity, Excitatio curret, Make/break trasitio & phase. The Megger MWA3xx Trasformer Widig Aalyzer is a advaced 3-phase trasformer test system deliverig portability, reduced set-up time, icreased job-site safety, ad effortless productivity. The MWA3xx provides complete ratio, phase ad widig resistace measuremets for a 3-phase trasformer. All ratio ad widig resistace tests are performed i oe istrumet, with oly oe 3-phase lead-set coectio. The MWA3xx utilizes PowerDB as a sigle software platform savig the user additioal time with oly oe set-up ad oe easy-to-read data report. The solutio for measurig ratio + widig resistace safer ad quicker tha traditioal methods Oe cotrol iterface for both fuctios Combied Test Form Oe ca test either ratio or widig resistace, all cotrolled ad viewed from a sigle form. Oe lead set Oe coectio to the trasformer Twice as safe, 50% lighter, easier trasformer hook up ad take dow Custom lead sets 16 Trasformer test equipmet

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18 Trasformer test va Test va for maiteace ad diagostic testig of power trasformers Software cotrol ad reportig High voltage ad low voltage leads are shared amog differet istrumets DC Widig resistace / Tap Chager Test Turs ratio ad vector group verificatio Capacitace ad dissipatio factor / power factor Excitatio curret Isulatio Resistace Power losses for o-load ad short circuit coditios (optioal) Moisture-i-cellulose assessmet with DFR techique (optioal) Withstad tests at elevated voltage up to 100 kv AC 50 / 60 Hz ad 70 kv DC (optioal) Oil breakdow test (optioal) A dedicated ad fully itegrated test va, complete with all relevat istrumets, accessories, ad test leads, for commissioig ad periodic maiteace tests. The heart of the system is a switch box that eables automated software-drive selectio of HV ad LV methods ad test schemes. This allows most istrumets to share commo test lead coectios savig time ad makig operatio safer. Physical iterface with the istrumets themselves is o loger required. Upo completio of each measuremet, results are automatically trasferred ito a protocol. The software allows comparative measuremets with ameplate ad previous measuremets for tredig. Routie ad advaced diagostic techiques i accordace with the IEC , IEC 60076, IEEE Std. C , GOST ad CIGRE 445 stadards ca be performed. 18 Trasformer test equipmet

19 Short circuit impedace (optioal) Frequecy Respose Aalysis (optioal) PowerDB itegrated reportig 19

20 MRCT Curret (CT) Trasformer Testig Multi-tap simultaeous testig reduces test time by 5 Smallest ad lightest 2 kv secodary voltage ijectio uit o the market Itegrated isulatio resistace, widig resistace ad demagetizatio testig Completely automated testig ad test report with oe touch operatio Optioal itegrated sigle phase relay test set, 60 A ad 300 V AC/DC The MRCT is the evolutio of testig for curret trasformers (CT). This istrumet provides the ability to perform the testig up to 5 times faster tha with traditioal istrumets, ad while testig, results are plotted, displayed ad preseted i a complete test report format. The MRCT has also added isulatio resistace test as well as demagetizatio to its capability. This helps complete all the required testig as per IEC ad ANSI stadards without the eed for additioal test equipmet or leads. Cofiguratio optios CT with optio to add relay test IEC GOOSE Bluetooth Remote operatio or o-board display The MRCT s uparalleled oise immuity makes it capable of deliverig depedable ad accurate results eve i extra high voltage substatios. MRCT SPECIFICATIONS Saturatio test 0 to 2000 V, 1 A maximum Ratio measuremet 0 to Widig resistace test 0 to 30 W Isulatio test 10 G W to 20 G W Weight 16.7 kg (36.7 lb) 20 Trasformer test equipmet

21 OTS Series Oil testig dielectric breakdow OTS rage of oil test sets are fully cofigurable to comply with Iteratioal stadards icludig ASTM D877, ASTM D1816 ad IEC The test sets perform accurate breakdow voltage tests o mieral, ester ad silicoe isulatig liquids. Moulded test vessels give repeatable results i the field ad laboratory, with lock-i precisio electrode gap settig adjustmets. The trasparet, shielded lid is a key feature eablig users to observe the test chamber. The OTS AF uits are available i 0 to 60, 80 ad 100 kv. These uits are lie powered ad provide uique facilities for quick ad easy replacemet of test vessels. VCM 80 ad 100 voltage meter accessories ca be used for moitorig the output voltage. The OTS PB uits are small ad lightweight to eable field testig. Available i 60 ad 80 kv models, the uits ca be both lie ad battery powered. Lightest portable uit, starts at 16 kg 9 cm colour display for outdoor o site use Battery or lie powered Precisio lockable electrode gap adjustmet Automatic oil temperature measuremet Direct output voltage or curret breakdow detectio The Megger guide to isulatig oil dielectric breakdow testig Look o the Megger web site for our book A guide to isulatig oil dielectric breakdow testig. The word Megger is a registered trademark 21

22 DLRO10HD MOM2 Low resistace measuremets Heavy duty micro ohmmeter High or low output power selectio for coditio diagosis 10 A for 60 secods, less time waitig to cool, great for chargig iductace High iput protectio to 600 V for protectio of iadvertet coectio to lie or UPS voltage The DLRO 10HD measures resistace values up to 250 mω makig it ideal for measurig coectios, bods ad welds. Hadheld battery operated micro ohmmeter Had held battery operated micro ohmmeter Up to 220 A 1 kg weight 1 μω to 1 Ω autoragig The MOM2 is desiged to measure the resistace of circuit breaker cotacts, bus-bar joits ad other highcurret liks. This product is desiged with safety, ease of use ad versatility i mid. The micro-ohmmeter ca be used aywhere to measure a low resistace value with high accuracy. MOM2 uses a ultra capacitor to geerate the high output curret eeded for low resistace measuremets. SPECIFICATIONS DLRO10HD MOM2 Maximum test curret 10 A 220 A Test modes Automatic Bidirectioal I > Imi 0.1, 0.6, 3.0 s I = Imi 0.1, 0.6, 3.0 s Uidirectioal Iductive Measuremet rage 0.1 uw to 2500 W 1 uw to 1000 mw Power source Mais/rechargeable battery Rechargeable battery Battery life > 1000 Auto (3 sec) tests > 2000 measuremets per charge Weight 6.7 kg 1 kg Test leads Duplex had-spikes with idicators Kelvi probes with trigger or Kelvi clamps 22 Trasformer test equipmet

23 Traiig ad support A additioal beefit to purchasig ay test istrumet from Megger is the breadth ad depth of the techical kowledge ad experiece that we ca share with you. We have ivested heavily i creatig a local support etwork of egieers to provide a rapid respose ad who uderstad your applicatio ad eeds. Product ad applicatio traiig ca also be offered at your premises or i specialist traiig facilities aroud the world. More iformatio o course availability, upcomig webiars ad other techical resources ca be foud o our website. Courses are offered at various levels ad typical cotet may iclude: Applicatios ad methods Turs ratio Widig resistace measuremet AC ad DC Isulatio testig Dielectric respose ad moisture assessmet Frequecy respose aalysis Oil testig Practical exercises Trasformer testig stadards ad guides Trasformer theory Trasformer life maagemet (TLM) bulletis Bulletis with must have iformatio for each of a wide rage of topics cocerig the care ad well beig of trasformers. Data maagemet PowerDB Power DB is a powerful data maagemet software for acceptace ad maiteace testig. No database kowledge is eeded with the itegratio of a powerful forms editor used to create or customize forms. Icludes equatio calculatios, temperature correctio calculatios, chartig ad much more. 23

24 TRAX - Multi-fuctio trasformer ad substatio test system TRAX is a high performace multi-fuctio trasformer test set that offers a time savig ad cost effective alterative to covetioal measuremets usig separate istrumets. MTO250 - Widig resistace testig to 50 A DC Packed with safety features to eable safe testig of highly iductive objects. TRANSFORMER TEST VAN - Maiteace ad diagostics of power trasformers Itegrated istrumets, accessories ad test leads makes commissioig ad maiteace easier ad more efficiet. Trasformer2016_SC_e_V02 The word Megger is a registered trademark Copyright 2016 Megger Limited, Archcliffe Road, Dover CT17 9EN, Eglad.