{"product_id":"megger-550005b-ttr-test-set-hand-cranked-ttr-129-991","title":"Megger 550005B TTR Test Set, Hand-Cranked TTR, 129.99:1","description":"\u003ch2\u003eMegger 550005B TTR Test Set, Hand-Cranked TTR, 129.99:1\u003c\/h2\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThe instrument excites the transformer at a fraction of rated voltage with a null balance bridge, keeping magnetizing current errors low so the voltage ratio closely follows the true turns ratio. An optional auxiliary transformer extends the ratio range to 329.99:1.\u003c\/p\u003e\n\u003cp\u003eExciting current is read from 0 to 1 A with a divide-by-5 switch for increased resolution, and four decade dials set the ratio. Each phase of a three-phase transformer can be tested by separate connection.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTurns ratio range 0.001 to 129.99\u003c\/li\u003e\n\u003cli\u003eAccuracy ±0.1%\u003c\/li\u003e\n\u003cli\u003eHand-cranked, no external power supply needed\u003c\/li\u003e\n\u003cli\u003eFour decade dials with null balance bridge\u003c\/li\u003e\n\u003cli\u003eExciting current measurement 0 to 1 A\u003c\/li\u003e\n\u003cli\u003eAuxiliary transformer extends range to 329.99:1\u003c\/li\u003e\n\u003cli\u003eRugged portable case\u003c\/li\u003e\n\u003cli\u003eIdentifies shorted coils, open circuits and tap-changer defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSingle-phase power and distribution transformer testing\u003c\/li\u003e\n\u003cli\u003eTurns ratio verification of potential and current transformers\u003c\/li\u003e\n\u003cli\u003ePhase-by-phase testing of three-phase transformers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e550005B hand-cranked TTR test set\u003c\/li\u003e\n\u003cli\u003ePermanently connected cable assembly (19494) with 2 C-clamps and 2 spring clips\u003c\/li\u003e\n\u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMegger 550005B TTR Test Set, Hand-Cranked TTR, 129.99:1 Technical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eSingle-phase, hand-cranked TTR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTurns ratio range\u003c\/th\u003e\n\u003ctd\u003e0.001 to 129.99 (up to 329.99:1 with auxiliary transformer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAccuracy\u003c\/th\u003e\n\u003ctd\u003e±0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003e8 V, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMetering\u003c\/th\u003e\n\u003ctd\u003eFour decade dials\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExciting current\u003c\/th\u003e\n\u003ctd\u003e0 to 1 A, divide-by-5 switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput power\u003c\/th\u003e\n\u003ctd\u003eHand-cranked\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCable assembly\u003c\/th\u003e\n\u003ctd\u003e19494, 2 C-clamps (X winding, 10 ft) and 2 spring clips (H winding, 13 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e7.5 H × 14 W × 12 D in (189 × 353 × 302 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e16 lb (7.3 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eManufacturer information: \u003ca href=\"https:\/\/www.megger.com\/en-us\/products\/type\/power-transformer-testing-and-monitoring\/transformer-turns-ratio-testing\" target=\"_blank\" rel=\"noopener\"\u003eTransformer turns ratio testing on megger.com\u003c\/a\u003e.\u003c\/p\u003e","brand":"Megger","offers":[{"title":"Default Title","offer_id":67776931954875,"sku":"IMM_87695168","price":4111.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/2635\/1547\/files\/megger-550005b-600x600-1.jpg?v=1792555692","url":"https:\/\/na.indomultimeter.net\/products\/megger-550005b-ttr-test-set-hand-cranked-ttr-129-991","provider":"Indo Multimeter","version":"1.0","type":"link"}