Dry Charge (Battery)

The process by which the electrodes are formed and assembled in a charged state. The cell or battery is activated when electrolyte is added.

Drop-Out

A relay drops out when it moves from the energized position to the un-energized position.

Draw-Lead

A cable or solid conductor that has one end connected to the transformer or a reactor winding and the other end drawn through the bushing hollow tube and connected to the top terminal of the bushing.

DMZ

Demilitarized Zone. Networking has corrupted the term and used it to refer to an unprotected subnet connected to a local network, but outside the protection of a firewall.