Megger - TTR300 Series

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TTR300 Series

Three-Phase Transformer Turns Ratio Tester

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• Stand-alone or remote-control operation
• Accurately measures ratio, phase deviation and exciting current
• Field upgradeable without compromise to calibration
• Built-in capability for storing and downloading test results in an XML format, via RS-232, Ethernet or USB ports (depending on model)
• Highest ratio measurement (45,000:1); highest accuracy (0.1%)

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. Their unique testing procedures and storage capability allows 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.

The TTR300 Series also measure the phase deviation of the transformer primary versus secondary. This quickly indicates problems such as partial shorted turns and core faults. This is also useful in verifying phase errors in all types of PTs and CTs.

Each unit comes equipped with a remote-control switch for single person testing. This allows the operator to test transformers with LTCs very quickly.

The Series consists of three instruments:

TTR300
The TTR300 is designed to be completely remote controlled via a PC running PowerDB LITE (included) or PowerDB (full version) PC software applications. The TTR300 is field upgradeable to the TTR310, TTR320 or TTR330.

TTR310
The TTR310 has the ability to store test results, upload results to a PC (via RS232 serial port), and/or print them in the field via optional thermal paper printer, without the use of an external computer. Please note: The TTR310 is a direct replacement for the three-phase TTR, C/N 550503


TTR330
The TTR330 offers a new user interface which allows the operator to interact with the PowerDB ONBOARD software system via full QWERTY and navigation keypads as displayed on an 8.4” VGA bright-color screen. An advanced feature of the TTR330 allows the user to customize test forms via optional full-version PowerDB.

    Documents (all documents are in PDF format and will open in a new window)
    Data SheetData sheet for Calibration Standard
    Data SheetData sheet for Field Check Box
    Data Sheet TTR Series Data Sheet
    User GuideUser Guide (English) for 3-phase TTR hi-ratio & 3-phase extended range test fixture
    User GuideUser Guide for C/N 550055
    User GuideUser Guide for TTR Check Box
    User GuideTTR300 User Guide
    User GuideTTR320 User Guide
    User GuideTTR310 User Guide
    User GuideTTR330 User Guide

    Documents (all documents are in PDF format and will open in a new window)
    User GuideUser Guide (English) for 3-phase TTR hi-ratio & 3-phase extended range test fixture
    User GuideUser Guide for C/N 550055
    User GuideUser Guide for TTR Check Box
    User GuideTTR300 User Guide
    User GuideTTR320 User Guide
    User GuideTTR310 User Guide
    User GuideTTR330 User Guide