Patent ID: 9648709
Date: 2017-05-09
CPC Classifications: H05B,Y02B

Claim:
1. A fault detection device for a streetlamp lighting system comprising multiple load groups which are powered by a power cable, the fault detection device comprising: a master detection control unit and multiple load detection control units configured for respective load groups, wherein the master detection control unit determines, according to a first fault feedback signal provided by respective load detection control unit, whether the load group corresponding to the load detection control unit is failed, while the streetlamp lighting system is in a first state, wherein the first state is a DC power supply state of the power cable; and the master detection control unit determines, according to a physical quantity detected on the power cable, whether the power cable is failed, while the streetlamp lighting system is in a second state, wherein the second state is an AC power supply state of the power cable.