Megger MTO300 and MTO330


Combines TTR and resistance testing in one box - faster, more efficient testing 55% smaller, 40% lighter than individual instruments Only one set of leads required - lighter, smaller and less expensive One test form - easier, faster to complete Built-in demagnetisation The Megger MWA300 and 330A Transformer Winding Analysers are here to offer you a faster, more efficient testing device through combining TTR and resistance testing in a single unit. This advanced 3-phase transformer test system provides complete ratio, phase and winding resistance measurements with only one 3-phase lead-set connection. What’s more, it offers portability, a reduced set-up time and increased job safety. Once connected, the MWA300 performs DC resistance measurements on all high- and low-side windings without reconnection. It has an 8-terminal/6-winding resistance measurement capability and doesn’t need any inter-connected boxes, allowing you to test all 6 windings without having to disconnect and reconnect leads. The MWA300 series saves you even more time by using a single software platform, PowerDB, which means you only need one set-up and one easy-to-use test form. The MWA300 series can be used effectively test power transformers, distribution transformers, CTs and VTs, and motors and generators. The following tests are easily performed with a single instrument, the MWA300 series, and a single 3-phase lead set connection: 3-phase turns ratio 3-phase winding resistance OLTC continuity (make-before-break) 3 phase core demagnetization Magnetic balance / flux distribution Excitation current Polarity and phase angle deviation Auto vector detection Heat-run test The MWA330A comes equipped with a built-in computer that has a 305 mm (12 in) colour display and touch-screen interface. The computer is designed to control the unit and it can store up to 100, 000 data sets.
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