Contact net has signal of pressure detection device

The utility model provides a contact net has signal of pressure detection device, sensor among the the device puts up with isolator altogether to be installed at same height, the high -pressure side of sensor passes through cable junction with isolator's inlet wire end, the sensor low -pressure end links to each other with the contact net negative pole, the sensor signal end passes through the wire with electrified detector and links to each other, when the voltage of sensing isolator when the high -pressure side of sensor is greater than 600V, electrified monitor is transfered with the signal to the low -pressure end of sensor, electrified detector offered passive bus signal of one -level this moment, realize that the contact net has the pressure to obtain detecting. The beneficial effects are that when contact net voltage is greater than 600V, go up the one -level and can show that the contact net has the signal of pressure can think that the contact net did not cut off the power supply temporarily this mom