TWA Advanced Series Three-Phase Winding Ohmmeters - Beijing Kanggaote Instruments and Equipment

Product introduction

TWA Advanced series is the latest DV Power solution for three-phase transformer winding resistance measurement and tap changer analysis. They are capable of testing six transformer windings with a single cable connection, as well as three-phase automatic transformer demagnetization. It has the option of the automated test mode, where the instrument operates the tap changer without operator input (minimizing the risk of human error) and records winding resistance results based on pre-selected stabilization criteria.

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Resistance measurement of all tap positions in all six windings performed in a single test
▪ True three-phase on-load tap changer dynamic resistance measurement
▪ Extremely quick measurement, single-step cable setup
▪ Rapid automatic demagnetization
▪ Fully automated test mode
▪ Large 10.1'' or 7'' graphical touchscreen display
▪ Temperature measurement channel

The list of the instrument application includes:
▪ Six-winding measurement of transformer winding resistances with a one-time cable connection
▪ A special mode which enables measuring the resistances of three transformer windings in the YN configuration simultaneously
▪ Dynamic resistance measurement (DVtest) of on-load tap changers
▪ An evaluation of synchronization between on-load tap changer phases
▪ A measurement of on-load tap changer motor current by using a dedicated channel
▪ A three-phase or single-phase automatic transformer demagnetization
▪ Fully automated test mode, with automatic detection of result stabilization

TWA Advanced Series