•   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.