| 摘要 |
A ground fault detector circuit (140) for a people conveyor configured to detect a ground fault in a safety chain (100) of the people conveyor, comprises a first resistor (130) connected between a first contact (P1) on the supply (126) of the safety chain (100) and a second contact (P2) on the return (122) of the safety chain (100), and a device (134) for detecting a change in voltage drop (UGFD) with respect to ground across said first resistor (130). |
