DEVICE FOR CONTROL OF EARTHING AVAILABILITY IN SOCKET

摘要

The device is intended for the control of earthing availability and neutral wire availability in the socket, connected to the three-wire or two-wire network 220V/5Hz. The device also provides the control of correctness of phase wires' connections. The technical result is reached by additional third electric branch, which consists of series-connected light emmiting diode 6 and the diode 5. The third electric branch by one end is connected to the middle point of two other electric circuits, and other its end is connected to earthing contact 4. The light-emitting diode 6 is back connected to the first two light-emitting diodes 1 contained as light indicators both in the first and second electic circuits. The variant of the device that is shown in Fig.5 is characterized in that for control of earthing availability it is necessary to press the button 8, and the current passes in a earthing chain only at the moment of button pressing.