Passive-driven photosolating high-voltage live-display protector

The utility model discloses a passive-driven photoelectric isolation high-voltage live display protector which comprises a triphase live display circuit, a first and secondary circuit isolating circuit and a locking control circuit. The utility model is characterized in that the first and secondary circuit isolating circuit is arranged between the triphase live display circuit and the locking control circuit and is composed of a photoelectric coupling tube, the locking control circuit is composed of a rectificate bridge, a thyristor, a trigger tube, a diode, a peripheral element capacitor and a resistor, and the locking control circuit and the first and secondary circuit isolating circuit form a current drive solid switching circuit. When switched on an electromagnetic lock circuit, the utility model itself does not need the working power supply and has the alternating-current and direct-current functions.