Insulation diagnostic systems with voltage up to 12 kV DELTA-4000

• Generates its own test signal – providing accurate and reliable measurements even in the most challenging environments and where portable generator power is required. • High noise suppression and signal detection circuitry that handles interference currents up to 15 mA or signal-to-noise ratios up to 1:20 for the most accurate and reliable measurements even under the most difficult conditions. . • The widest frequency range for this type of equipment (1-500 Hz), which allows you to determine such details of the isolation characteristics of the insulation that are not available for detection by other test facilities. • Intelligent temperature correction technology (patent pending) allows the user to evaluate the actual temperature dependence of the test object by measuring tg  in a specific frequency range. The introduction of an accurate temperature correction based on a mathematical calculation provides a more accurate determination of the state of the insulating material. • Method for automatic detection of dependence tg  of insulation on voltage (patent pending). Some high-voltage components may have a voltage dependence near the operating point, which is found when testing to determine tg  (i.e., the insulation loss tangent depends on the test voltage). The DELTA4000 series implements a patented voltage dependency detection method and provides the user with an alert indicating that additional tests should be performed at different voltage levels. • Short test times – Dynamic hearthThe noise effect minimizes the actual test time. • Performing tan delta control (tg ). When tests to determine tg  (Doble test*) are required or specified, Megger's DELTA4000 series units fully guarantee these tests.