vanguard instruments tri-0
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True 3-Phase Transformer Turns-Ratio Tester
Vanguard Instruments Tri-Phase
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FeaturesVanguard Instruments Tri-Phase
Provides a true 3-phase test voltage.Can measure phase angle relationship between the transformer’s primary and secondary winding.Automatically detects transformer vector diagram.Can test phase-shifting transformers. Conventional TTR’s cannot test this type of transformer.
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Features (continued)Vanguard Instruments Tri-Phase
Can test transformer in single phase mode (line to neutral) and 3-phase mode (line to line).Turns-ratio reading range: 0.8 – 15,000.3 selectable test voltages: 8, 40, 100Vac.Measures excitation test current.
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Features (continued)Vanguard Instruments Tri-Phase
Calculates turns-ratio percentage error.Provides Pass/Fail report for each test.Built-in Load Tap Changer controller.Built-in 4.5” wide thermal printer.
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Features (continued)Vanguard Instruments Tri-Phase
Can be used in stand-alone or PC-controlled mode.Can store 112 transformer test records.Can store 128 transformer test plans.RS-232C and USB PC interface.USB Flash drive interface.
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Typical Thermal Printer OutputVanguard Instruments Tri-Phase
Phase Angle Measurement
Turns-ratio Percentage Error
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Typical Thermal Printer OutputVanguard Instruments Tri-Phase
Nameplate Ratio
Measured Ratio Percentage Error
Phase Angle Measurement