- 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.
- Built-in auto-demagnetization feature.
- One test form – easier, faster to complete.
- PBuilt-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.
The Transformer Testing Equipment MTO3xx series also shares the Megger TTR300 series lead set. Users who test both turns ratio and winding resistance can save time and money since only one lead set is needed to connect to the transformer.