HGQ-II Instrument Transformer Calibrator Calibration Device
HGQ-II Instrument transformer calibrator calibration device is a new instrument improved on the basis of HGQ type. It is an electromagnetic standard instrument that outputs the standard ratio of current to voltage. It is a standard ratio power supply composed of standard components such as instrument transformers, standard resistors, standard capacitors, and corresponding power supplies. It can output standard ratios of current-to-current ΔI/I, voltage-to-voltage ΔU/U, voltage-to-current ΔU/I, and current-to-voltage ΔI/U, it is specially used to verify various 1-3 class of transformer calibrators (HEG type and digital display calibrator, etc.). It can also be used to verify the secondary pressure drop tester.