Vanguard TRI-PHASE Three Phase TTR Now Available for Rent from Protec

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Vanguard_TRI-PHASEThe Vanguard TRI-PHASE is a true three-phase transformer turns-ratio tester (TTR), designed to conform to the IEEE C57.12.90 measurement standard, generates and outputs a three-phase excitation test voltage to the three transformer primary windings. The induced three-phase secondary voltages are sensed, and the transformer turns-ratio is calculated.

The Vanguard TRI-PHASE True Three Phase TTR can measure turns-ratios from 0.8 to 15,000. The three-phase turns-ratios, excitation current, and phase angle readings are displayed on the unit’s LCD screen.

Since a three-phase voltage is used to excite the transformer windings, the  Vanguard TRI-PHASE can detect and measure turns-ratios of any transformer type, including phase-shifting transformers.

The  Vanguard TRI-PHASE can be used as a stand-alone unit or can be computer-controlled, and it can be operated locally using its alpha-numeric keypad and rotary switch. Information is displayed on a back-lit LCD screen (128 x 64 pixels) that is viewable in both bright sunlight and low-light levels.

Test reports can be printed in the field on the unit’s built-in 4.5-inch wide thermal printer.

The  Vanguard TRI-PHASE can store up to 112 test records and 128 test plans in Flash EEPROM. Test records or test plans can be stored or transferred to and from a PC via the available interfaces (RS-232C port, USB port, USB Flash drive port).

Each Protec office maintains a full complement of electrical test and measurement equipment. Offering equipment from all of the premiere manufacturers for rent, lease or purchase, Protec has the electrical testing equipment you need to get the job done.



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