Passive triggered-power electronic tap-changer device and contact device

A power electronic tap changer device, comprising:

• a first tap, a second tap, a main contact, a first auxiliary contact, a second auxiliary contact, a first trigger contact, a second trigger contact, an output terminal, a first thyristor, a second thyristor, a first resistor, a second resistor, a third resistor and a fourth resistor, wherein
• the main contact, the first auxiliary contact, the second auxiliary contact, the first trigger contact and the second trigger contact are respectively connected to a first static contact of the first tap or a second static contact of the second tap;
• the main contact is connected to the output terminal;
• the first auxiliary contact is connected to a terminal of the first thyristor, and the output terminal is connected to another terminal of the first thyristor;
• the second auxiliary contact is connected to a terminal of the second thyristor, and the output terminal is connected to another terminal of the second thyristor;
• the first trigger contact is connected to a first terminal of the first resistor, a second terminal of the first resistor is connected to a first terminal of the second resistor, and the output terminal is connected to a second terminal of the second resistor;
• and
• the second trigger contact is connected to a first terminal of the third resistor, a second terminal of the third resistor is connected to a first terminal of the fourth resistor, and the output terminal is connected to a second terminal of the fourth resistor.