Three Phase Transformer Turns Ratio Meter

The great advantage of the PWR3A compared to many of the other instruments on the market is its simple set-up. In most cases the required parameters must be looked up in tables on the basis of the vector group and the code number of the transformer to be measured, and set up at the instru-ment by means of rotary switches or keys. This often results in a wrong set-up or uncertainty regarding the set-up since some of the tables are confusing.
Such a manual set-up is not necessary with the PWR3A transformation ratio measuring instrument. You simply type in the vector group with the keys. The only thing you have to do is to connect the transformer being off-line to the device and release the measurement; all three phases are measured consecutively, all connecting and short circuited procedures at the primary and secondary volt-age sides are performed automatically before each measure-ment. Of course it is also possible to measure just one phase, e g. H2.
Features :

• Ratio range from 0.75 to 20,000 (higher ratios with CVT-Ext.)
• Fully automated measurement
• Features market unique Vector Group Detection
• Measuring voltage from 8 V to 230 V
• Measuring voltage up to 5 kV by CVT-Extension: PWR3A-CVT
• Using 3-phase voltage for phase angles other than 0°/180°
• Easy to handle tap changer automatic
• Internal memory stores all dates (Reading with PWR3A-XFER)
• LC display (256 x 128 pixel) with backlight
• Easy input of vectorgroup and measuring conditions
• USB/RS232C port to get full instrument control
• Centronics printer port or build in printer (optional)
• Robust mobile case for field use
• Factory Certificate