Apparatus for detection of electrical disturbances resulting from electromagnetic pulse

An apparatus configured to detect an E3 phase and E1 and E2 phases of an electromagnetic pulse and at least generate an alarm, the apparatus comprising:

• a pulse detector connected to an input, the pulse detector configured to detect transient electromagnetic pulse disturbances associated with at least one of E1 and E2 phases of an electromagnetic pulse by responding to pulse disturbance durations ranging from nanoseconds to microseconds;
• a mains utility power supply line;
• a sustained level detector connected to the mains utility power supply line, the sustained level detector configured to detect a sustained voltage level associated with an E3 phase of at least one of an electromagnetic pulse and a solar storm;
• a delay timer operatively coupled to the pulse detector for holding an indication of a transient electromagnetic pulse disturbance for a predetermined time limit of minutes;
• a latch operatively coupled to the sustained level detector and the delay timer to indicate an electromagnetic pulse has occurred when the sustained electrical disturbance occurs following the transient electromagnetic pulse disturbance within the predetermined time limit;
• and
• an alarm operatively coupled to the latch for alerting when the electromagnetic pulse is indicated by the latch.