TEST EQUIPMENT for Transformer and Substation Testing Transformer and Substation Test System (TRAX) is defined as a multi-functional test set solution, for transformer and substation testing, writes Marius Pitzer, regional sales and applications manager at Megger Limited. T RAX is a balanced for on-load tap-changers, system addressing transformer turns ratio the demand for a measurements and single product/test dissipation factor and system capable of capacitance testing performing multiple features, make it tests. The test a high efficiency, system replaces high accuracy numerous individual and excellent testing devices high performance thus making transformer test set. testing with TRAX TRAX’s variable a timesaving and output frequency cost-effective alternative makes it possible to to conventional use a test signal that is measurements that use different from the mains The TRAX multifunction test set is a high efficiency, high accuracy and high separate instruments. The frequency thus allowing performance solution. solution minimises learning an effective suppression COMPLETE SOLUTION WITH time as well as minimising of line frequency related MULTIFUNCTIONAL TEST SET testing time, resulting in maximised interference. This means that TRAX is The TRAX multifunction test set is efficiency. able to perform accurate measurements designed to be a complete solution in TRAX is a unique test system for even in high interference environments. transformer and sub-station testing. testing power transformers, CTs, VTs, The wide frequency range also allows Its high current winding resistance panels, circuit breakers and protection for the possibilities of more advanced measurements, adaptive algorithm for relays. Providing high output current tests that provide additional information optimised transformer demagnetisation, and voltage with a wide adjustable about the test object. Examples include true dynamic resistance measurements n c frequency range, TRAX can be used the individual temperature correction of with an integrated touch-screen or tan delta measurements and measuring external computer device with web frequency response of stray losses. browser. The compact design allows the TRAX to be shipped VARIETY OF MANUAL AND in its transportation case within AUTOMATED FUNCTIONS the limitations of airport check-in The user interface allows full luggage. manual control where the user These variable levels of defines a specific test setup. voltage and current can be Alternatively, a variety of individual generated and measured with instrument applications are MINIMISE MINIMISE high precision, allowing TRAX available to perform automated TESTING LEARNING to be used for a wide range testing procedures. These TIME TIME of applications including, include winding resistance, and not limited to: turns turns ratio, impedance ratio, excitation current, winding measurements, relay testing, and contact resistance, impedance, circuit breaker analysis and more. The tan delta/power factor testing and tests can be organised and reported as various primary tests for LV, MV and HV separate tests or as a combined full set MAXIMISE EFFICIENCY electrical apparatus. of test results for the same asset. ESI 86 ESI AFRICA ISSUE 1 2015