GFUVE T-203H transformer turns ratio tester(TTR tester ) is a revolutionary instrument designed to perform three-phase turns ratio measurements using step-up excitation. A single three-phase lead-set connection is all that is required to complete three-phase tests in less than 1 minute! The T-203H is capable of three-phase excitation and can induce up to 160 V on the primary winding, overcoming the voltage dependence seen on larger transformers. The three-phase source also allows you to test phase shifting and zigzag transformers, and provides you with a guaranteed accuracy of ±0.1 % from -10 °C to +50 °C.
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