Capacitive electromagnetic voltage transformer field tester

The utility model provides a capacitance electromagnetic type voltage transformer on-site tester, which comprises a hand-held box shell, a control panel and a test circuit board, the control panel is fixed in a lower shell of the hand-held box shell, the control panel and the hand-held box shell enclose an accommodating space, the test circuit board is arranged in the accommodating space, and the test circuit board is connected with the hand-held box shell. The control panel is provided with a binding post, a display screen, a USB (Universal Serial Bus) interface, a power supply interface and a power supply switch, and the test circuit board comprises a sampling module, a digital processing and storage module and a control module which are used for testing capacitive and electromagnetic voltage transformers. During testing, the voltage transformers are connected with the binding posts on the tester according to a wiring diagram, and various tests of the two voltage transformers can be completed through contro