TWA Standard Series Three-Phase Winding Ohmmeters & Tap Changer & Winding Analyzers - Beijing Kanggaote Instruments and Equipment

Product introduction

When it comes to winding resistance measurement on three-phase power transformers and autotransformers, TWA Standard series offers some of the most technically advanced instruments with LCD display in the market. Both models are capable of testing six transformer windings with a one-time cable connection, as well as three-phase automatic transformer demagnetization. The stored magnetic energy is safely automatically discharged at the end of the test.

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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
▪ Built-in tap changer control unit
▪ Temperature measurement channel

The list of the instrument application includes:
▪ A six-winding measurement of transformer winding resistances with a one-time cable connection
▪ Quick YN mode, which enables measuring the resistances of three transformer windings in the YN configuration simultaneously (TWA40D)
▪ Dynamic resistance measurement (DVtest) of on-load tap changers, which can be performed
simultaneously on all three phases, or on a single phase (TWA40D)
▪ An evaluation of synchronization between on-load tap changer phases (TWA40D)
▪ A measurement of on-load tap changer motor current by using a dedicated channel (TWA40D)
▪ A three-phase or single-phase automatic transformer demagnetization

TWA Standard Series Three-Phase Winding Ohmmeters