The Megger MWA330A 3-Phase Transformer Turns Ratio and Winding Resistance Analyzer is an advanced 3-phase transformer test system that provides complete ratio, phase and winding resistance measurements with only one 3-phase lead-set connection.
Once connected, the Megger MWA330A 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 for testing on all 6 windings without having to disconnect and reconnect leads.
The MWA330A saves even more time by using a single software platform, PowerDB, allowing for only one set-up and one easy-to-use test form.
The following tests are easily performed with the MWA330A, 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
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