Method and systems for protection of multiport multimode power over ethernet devices from electromagnetic energy disturbance

A method for suppressing an electrical surge induced by an electromagnetic pulse (“EMP”) generated by a nuclear weapon detonation from reaching a to plurality of electronic devices associated with mixed signal communication channels carrying simultaneously data and direct current power (“DC power”), said method comprising:

• responding to a first overvoltage exceeding a first E1 predetermined threshold level induced by an E1 component pulse in said mixed signal communication channel carrying simultaneously DC power connected to a plurality of electronic device ports associated with a network,
• said responding to the first overvoltage comprises limiting, absorbing, and shunting said first overvoltage within less than one nanosecond after said first overvoltage exceeds ret the first E1 predetermined threshold level so as to limit a level of said first overvoltage to a second E1 predetermined threshold level using a first shunting assembly including transient voltage suppressors (TVSs), metal oxide varistors (MOVs), gas discharge tubes (GDTs), other mechanical, electrical and ionization discharge devices (IDDs) and combinations thereof;
• responding to a second overvoltage exceeding a first E2 predetermined threshold level induced by an E2 component pulse in said mixed signal communication channel carrying simultaneously DC power connected to said plurality of electronic device ports associated with said network,
• said responding to a second overvoltage including limiting, absorbing, and shunting said second overvoltage so as to limit a level of said second overvoltage to a second E2 predetermined threshold level using a second shunting assembly including TVSs, 23 MOVs, GDTs, other mechanical, electrical and IDDs and combinations thereof;
• and
• responding to a third overvoltage exceeding a first E3 predetermined threshold level induced by an E3 component pulse in said mixed signal communication channel carrying simultaneously DC power connected to said plurality of electronic device ports associated with said network,
• said responding to a third overvoltage including limiting, absorbing, and shunting said third overvoltage so as to limit a level of said third overvoltage to a second E3 predetermined threshold level using a third shunting assembly including TVSs, MOVs, GDTs, other mechanical, electrical and IDDs and combinations thereof.