The invention relates to a 10kv voltage transformer for safe closing, and belongs to the field of power transmission and power supply equipment. The 10kv voltage transformer for safe closing comprises a 10kv step-down transformer, a relay, an electromagnetic lock, an insulation resistance test instrument and a controller. The insulation resistance test instrument comprises a wire terminal, a ground terminal, a signal terminal and a shield terminal. The wire terminal of the insulation resistance test instrument is connected to an output terminal of the 10kv step-down transformer through the relay. The shield terminal is connected to a housing of the 10kv step-down transformer, and the ground terminal is grounded. The controller controls the on-off of the insulation resistance test instrument, the relay or a solenoid valve, and receives test signals of the insulation resistance test instrument. The electromagnetic lock is arranged on a switch of a primary side of the 10kv step-down transformer, and is used for locking or unlocking the on-off state of the switch. The controller comprises an MCU, a display, a keyboard and a communicator. The MCU is separately connected to the display, the keyboard and the communicator.