(1) Instrument internal adopt precision three-phase inverter measurement power supply instead of the single-phase mains supply as measuring voltage, which eliminate the harmonic effect of the main voltage , more accuracy. If the working power supply is generator and its without any effect.
(2)Adopt 3 phase output voltage,3 phase input voltage and 3 phase measuring at the same time, can very easily automatic identification of transformer connection group 0 -11.
(3)Suitable for various of transformers, with the function of testing the Z type transformer.
(4)Using precision three-phase inverter power supply, has the high and low voltage reverse connect protection and transformer inter-turns short circuit protection, tap-changer protection and output short circuit protection functions, increase the stability of instrument.
(5)After inputting the rated parameters, can automatic measure transformer turns ratio, error and tap-changer points, especially for asymmetric tap-changer points, also can accurately test the position of the transformer tap-changer, can measure up to 99 points of tap-changer
(6)With 65K True Color Module LCD display, each operation step with English prompt, and the operation can be completed just by prompt and no need of manual.
(7)With Micro-printer ,USB and RS232 interface.
(8)With sealed water-proof and shock-proof sturdy hand-case, be suitable for field testing.