Hipotronics TTR2795
Transformer Turns Ratio Meter, 100V, 1A

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Product Overview

HAEFELY / HIPOTRONICS TTR2795 TRANSFORMER TURNS RATIO METER (Call for Availability)

The Haefely / Hipotronics TTR2795 Transformer Turns Ratio Meter uniquely combines winding resistance measurement, turns ratio measurement, core demagnetisation, transformer type detection and heat run test (cooling curve) in one extremely fast instrument. A simple one-time-connect-all system drastically reduces measureing time. Once connected all tests can be done in a row without any reconnection.

Features and Specifications of the Haefely / Hipotronics TTR2795 Transformer Turns Ratio Meter include:

Features:

• Fully automated measurement of turns ratio, voltage ratio, phase displacement and excitation current
• Automatic winding connection identification (AWCI) and automatic vector group detection provide quick and easy operation
• Safety connection control feature proofs test setup before applying test voltage to avoid any damage of personnel, test equipment and instrument
• Built-in printer for quick test report generation and total prevention of data loss
• User friendly self-explaining interface with one rotary-push-button for easy access to the menu structure
• Large graphic display shows all data at a glance and displays tap changer results in a clear graphic diagram
• Lightweight, compact and rugged design for use in harsh environments:
• Closed case is IP65 waterproof
• Open case is splash proof
• Remote control software to operate the unit from a laptop PC and for easy gathering, exchanging and analyzing of measurement data
• Applications:
• Turns Ratio, Voltage Ratio, Phase Displacement and Excitation Current measurements according to ANSI, IEC and AS standards on the following:
• Power and Distribution Transformers
• Instrument Transformers

Specifications:

• Excitation Voltage:
• 1 V, 10 V, 40 V and 100 V 
• Automatic or manual selectable
• Excitation current:  maximum 1 A (10 mA at 1 V) 
• Display: 5.2" dot matrix LCD 240x128 module with backlight
• Stores up to 100 complete test results/test setups 
• Printer: Thermal strip printer, paper width 58mm
• Interfaces:
• Computer: RS 232C, 19200 baud, 9 pole 
• Tap changer:  3 pole contact in/out (potential free)
• Measurement Ranges and Accuracy: 
• Ratio: 0.8 - 100:
• Accuracy @ 100 V: ± 0.03%
• Accuracy @ 40 V: ± 0.05%
• Accuracy @ 10 V: ± 0.05%
• Ratio: 101 - 1000:
• Accuracy @ 100 V: ± 0.05%
• Accuracy @ 40 V: ± 0.05%
• Accuracy @ 10 V: ± 0.05%
• Ratio: 1001 - 1500:
• Accuracy @ 100 V: ± 0.03%
• Accuracy @ 40 V: ± 0.05%
• Accuracy @ 10 V: ± 0.10%
• Ratio: 1501 - 2000:
• Accuracy @ 100 V: ± 0.03%
• Accuracy @ 40 V: ± 0.05%
• Accuracy @ 10 V: ± 0.15%
• Ratio: 2001 - 4000:
• Accuracy @ 100 V: ± 0.05%
• Accuracy @ 40 V: ± 0.05%
• Accuracy @ 10 V: n/a
• Ratio: 4001 - 13000:
• Accuracy @ 100 V: ± 0.15%
• Accuracy @ 40 V: n/a
• Accuracy @ 10 V: n/a
• Ratio: 13001 - 20000:
• Accuracy @ 100 V: ± 0.20%
• Accuracy @ 40 V: n/a
• Accuracy @ 10 V: n/a
• Excitation Current:
• Range: 0 - 1 A
• Resolution: 0.1 mA
• Typical Accuracy: ± 0.3% ± 2 mA 
• Phase Angle:  
• Range: ± 180º
• Resolution: 0.01º
• Typical Accuracy: ± 0.05º