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TTR 2796

Product catalog summary

Applications
The TTR 2796 is a fully automated three-phase transformer turns ratio meter designed for factory routine tests, acceptance tests, and regular maintenance of power, distribution, and instrument transformers. It provides accurate measurements of transformer turns ratios, helping to detect faulty windings and defective tap changer positions.

Features and Advantages

Highest measurement accuracy in the market up to 0.03%.
Fully automated measurement of turns ratio, voltage ratio, phase displacement, and excitation current.
Automatic winding connection identification and vector group detection for quick operation.
Safety connection control to prevent harm and equipment damage.
Built-in printer for quick test report generation.
User-friendly interface with a rotary-push-button and large graphic display.
Remote control software for easy data gathering and analysis.
Lightweight, compact, and rugged design suitable for harsh environments.

Software and Reporting
The TTR APSW software allows remote setup and control via USB, offering advanced analysis with customized graphs and report generation. Measurements can be performed automatically or manually, with results displayed in real-time or stored for later analysis. Reports are generated in XML, HTML, and CSV formats for easy data processing.

Increased Test Voltage
Working with major transformer manufacturers has shown that increased test voltage improves measurement accuracy for large power transformers. The TTR 2796 can measure up to 250V, reducing errors and ensuring compliance with IEC and IEEE standards.

Arbitrary Phase Shifts
The TTR 2796 can handle arbitrary phase shifts in special transformers, such as phase-shifting and rectifier transformers, using the optional Arbitrary Phase-Shift (APS) feature without additional hardware.

Specifications

Excitation Voltage: 2.5 V, 25 V, 100 V, and 250 V.
Accuracy: 0.03%.
Ratio Range: 0.8 to 50,000.

Standard Package and Options
The standard package includes cables, clamps, remote control software, and a calibration certificate. Optional accessories include an external tap test start switch and warranty extensions.

Contact Information
Haefely AG, Switzerland and Haefely Representative Beijing Office, China.

Catalog excerpts

TTR 2796 TRANSFORMER TURNS RATIO MEASUREMENT Leaflet

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Reliable and fast measurement Automatic winding connection identification AWCI (patented) and automatic vector group detection Quick and easy operation Safety connection control proofs test setup before applying test voltage Avoids harm to personnel,damage to test equipment and instruments Built-in printer Quick test report generation and prevention of data loss Rotary-push-button for easy access to the menu structure User-friendly and self-explanatory interface Measuring turns or voltage ratio can help in detecting faulty transformer windings and defective tap changer positions. The excitation...

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REMOTE SOFTWARE The included TTR APSW software offers remote setup and control of the TTR 2796 from a computer through a USB connection. Additionally advanced analysis is available trough customized graphs, trending and report generation capabilities. Data can be analyzed in real time or stored and recalled for analysis. The comprehensive user interface guides the operator through the setup steps by entering nameplate info, transformer vector group, environmental conditions and user comments. REPORTING Immediate reports can be printed using the device Printer in the front panel. Full reports...

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IEEE Automatic TTR 2796 External Tap Test Start Switch 2796TAP is used for convenient remote tap changer Warranty Extensions to 2 or 3 years Approved TTR 2796 The Arbitrary Phase-Shift (APS) feature allows the TTR 2796 measure turns and voltage ratio, phase displacement and excitation current of special-type transformers with arbitrary phase shifts. The software runs on an external computer (not included) connected through USB. Excitation Voltage Complete technical specifications in the TTR 2796 Datasheets available at www.haefely.com STANDARD PACKAGE ADDED SERVICES Measuring bridge Including...

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EUROPE HAEFELY AG Birsstrasse 300 4052 Basel Switzerland CHINA Haefely Representative Beijing Office 8-1-602, Fortune Street No.67, Chaoyang Road, Chaoyang District Beijing, China 100025 This document has been drawn up with the utmost care. We cannot, however, guarantee that it is entirely complete, correct or up-to-date. Subject to change without notice. V22.10 HIGH VOLTAGE

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TTR 2796

TTR 2796

Catalog excerpts

All Haefely AG catalogs and technical brochures