Megger’s TM1700 circuit-breaker analyzer system provides reliable and accurate test results in noisy high-voltage substations. It is available in four standard models with stand-alone functionality or data acquisition models without user interface. All models can be controlled using a computer. Galvanically isolated inputs and outputs make it possible to perform all relevant measurements in one test. The patented DualGround method keeps the circuit breaker grounded on both sides throughout the test. It has an 8-in. color touchscreen, and the software enables the user to perform the test by simply turning the test switch without the need for settings.