Megger TRAX 279 Transformer & Substation Test System
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    Megger TRAX 279 Transformer & Substation Test System

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    The Megger TRAX 279 Transformer & Substation Test System is a multifunctional platform designed for transformer diagnostics and primary injection testing. Delivering up to 800 A AC output and 250 V AC for turns ratio measurements, it supports winding resistance, excitation current, demagnetization, CT/VT analysis, and OLTC testing. Built for remote control operation, the TRAX 279 integrates seamlessly with accessories such as the TDX, TCX, and TSX modules, making it a powerful and flexible solution for substation maintenance.

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    SKU: 125910 Category:
    Brand:Megger

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    Description

    Megger TRAX 279 Transformer & Substation Test System | Multifunction Test System 800 A

    The Megger TRAX 279 is a powerful multifunction test system designed for transformer, substation, and protection relay testing. With an AC current output of up to 800 A, and full compatibility with the TRAX ecosystem of apps and accessories, it allows you to perform winding resistance, turns ratio, excitation current, leakage reactance, and dynamic OLTC resistance tests with high precision.

    Unlike models with built-in displays, the TRAX 279 is controlled remotely, making it more streamlined for rack or field setups where a separate control device or PC is preferred. The standard transformer package is included, with options for adding accessories like tan-delta (with TDX), high current (TCX), and switch boxes (TSX). With rugged construction, high ambient capability, and accurate measurement, the TRAX 279 helps utilities and service companies reduce testing time while maintaining diagnostic quality.

    Megger TRAX 279 Key Features

    • 800 A AC output for high-current transformer testing
    • Remote control operation (no internal display) suits the TRAX 279 setup
    • Full transformer test suite included (turns ratio, winding resistance, excitation current, demagnetization)
    • Supports accessories: TDX 12 kV for tan-delta, TCX for high current, TSX for multi-winding/3-phase switching
    • High accuracy: internal current/voltage/ac measurement tolerances with precise sensors
    Specifications

    Specifications

    Megger TRAX 279 Transformer & Substation Test System Specifications

    Specification TRAX 279 Details
    AC Test Current Output Up to 800 A AC (for transformer primary current injection) :contentReference[oaicite:6]{index=6}
    Voltage Output for Turns Ratio Tests 250 V AC typical for TTR measurement :contentReference[oaicite:7]{index=7}
    Mains Input 100-240 V AC, 50/60 Hz (±10%) :contentReference[oaicite:8]{index=8}
    Weight (Instrument Only) ≈ 29 kg (64 lbs) :contentReference[oaicite:9]{index=9}
    Weight in Soft Case ≈ 33 kg (73 lbs) :contentReference[oaicite:10]{index=10}
    Weight in Hard Case ≈ 41 kg (90 lbs) :contentReference[oaicite:11]{index=11}
    Dimensions (Excluding Handles) 475 × 315 × 330 mm (18.7″ × 12.4″ × 13″) :contentReference[oaicite:12]{index=12}
    Display No built-in screen (remote/controller interface) for TRAX 279; 10.4″ display found on other TRAX variants :contentReference[oaicite:13]{index=13}
    Analog Inputs 4 × 0-10 A AC/DC, 4 × 250/300 V AC/DC; 2 × 0-50 V DC (for resistance) :contentReference[oaicite:14]{index=14}
    Output R1/R2 Low Voltage 2 × 0-50 V DC intended for resistance measurements (can be used for AC low-voltage) :contentReference[oaicite:15]{index=15}
    Auxiliary / Control Outputs Aux control 54 V DC; binary outputs; trigger/timing inputs up to 250 V; interlock output options :contentReference[oaicite:16]{index=16}
    Accuracy – External AC / DC Voltage & Current 0.05% reading + 0.05% full scale (≤5 A); 0.2% reading + 0.2% FS for higher ranges :contentReference[oaicite:17]{index=17}
    Operating Temperature -20 °C to +55 °C (-4 °F to +131 °F) :contentReference[oaicite:18]{index=18}
    Storage Temperature -20 °C to +70 °C (-4 °F to +158 °F) :contentReference[oaicite:19]{index=19}
    Humidity < 90% RH non-condensing :contentReference[oaicite:20]{index=20}
    Protection & Power Accessories Compatibility Compatible with TDX 12 kV high-voltage unit, TCX high-current box, TSX switchboxes for 3-phase/6-winding measurements :contentReference[oaicite:21]{index=21}
    Datasheet

    Datasheet

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