The TTR300 Series of three-phase transformer turns ratio test sets are designed to measure the turns ratio of power, instrument, and distribution transformers in a substation or manufacturing …

The TTR provides accurate measurement of exciting current (to 0.1 mA) which can help provide information about the condition of a transformer’s core. Unwanted circulating currents or unintentional core grounds can increase the exciting current and indicate a problem. Phase Angle Deviation and its Application

The TTR300 Series are ideal for use by power transformer manufacturers. Their unique testing procedures and storage capability allows an operator to set up and test difficult three-phase transformers (with multiple tap changers and bushing CTs) in a fraction of the time than it used to take with other TTRs.

PRODUCT OVERVIEW TTR300/330A The Three-Phase TTR Test Set is fully automatic, self-checking, menu-driven unit. The test set measures the turn ratio, phase shift, and excitation current of power, distribution, and instrument transformers.

The TR 300 is a true three-phase transformer turns ratio test instrument designed to test any type of transformer. It performs turns ratio tests per the IEEE C57.12.90 measurement standard. The TR 300 generates its own three-phase excitation test voltage which is applied to the three phases of the transformer’s primary windings.

Megger TTR300 is s pecifically designed for three-phase applications, this advanced kit, denoted as the TTR 300, empowers professionals in the field with precise and efficient transformer turns ratio testing.

The TTR300 Series of three-phase transformer turns ratio test sets are designed to measure the turns ratio of power, instrument, and distribution transformers in a substation or manufacturing environment. The instruments are ideal for use by power transformer manufacturers.

This fully automatic, self-checking unit is used to measure the turn ratio, phase shift, and excitation current of power, distribution, and instrument transformers. The TTR300 offers features like quick test mode, three excitation test voltages, and multi-lingual support. It is also compliant with ANSI, IEC, and Australian standards.

TTR®300 Series Three-Phase Transformer Turns Ratio Test Sets APPLICATIONS The TTR300 Series applies voltage to the high-voltage winding of a transformer and accurately measures the resulting voltage from the low voltage winding. In addition to turns ratio, the units measure excitation current, phase angle deviation between the high- and

environment. The Megger TTR 300 model is ideal for use by power transformer manufacturers. The unique testing procedures and storage capability allow an operator to set up and test difficult three-phase transformers in a fraction of the time than it used to take with other TTRs.