Instantaneous and inverse-time-overcurrent sensor

摘要: An instantaneous and inverse time-overcurrent sensor for protecting a monitored circuit against overload conditions. The includes solid state reactor stage coupled to an inverse-time unit so as produce trip signal when timeovercurrent condition in the exceeds selected value. t characteristics of device are readily adjustable cover most protection requirements. Additional circuitry is provided producing upon occurrence excessively high value overcurrent. Indicator devices provide d giving visual indications, retaining such after or trip.