T&D has various meanings in the Business & Finance category. Discover the full forms, definitions, and usage contexts of T&D in Business & Finance.
A relay having an intentional delaying device. The controlled period between the functioning of two events. A period of time when a load is energized or de-energized. At the end of the desired time period the load changes state (i.e. on or off). Time delay a time-current response char-acteristic, established by national standards, which means that a time-delay fuse is de-signed to carry five times rated current for 10 seconds before opening. also envelope delay.
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