Lightning protection device for single-phase leakage switch

• Main Author: XIN DESHENG
• Format: Patent
• Language: Chinese; English
• Published: 02.04.2014
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model discloses a lightning protection device for a single-phase leakage switch. According to the utility model, a lightning protection main circuit and a lightning failure indicator are connected between the phase pole, the zero pole and the ground pole on one side of the single-phase leakage switch. A first piezoresistor and a second piezoresistor for forming the lightning protection main circuit and one end of a gas discharge tube are connected to form connection points. The other end of the gas discharge tube is connected with the phase pole, the zero pole and the ground pole separately. Light-emitting diodes, resistors and diodes forming the lightning failure indicator are in forward series connection and then connected between the connection points and the ground pole. After installed the lightning protection device on the single-phase leakage switch, the damage of inductive thunder on load side electrical equipment can be prevented, and reliable protection is also provided for personal elec