In part Ⅰ, we explain how to coordinate transformer primary-side fuses with a secondary-side automatic circuit recloser, such as in a utility substation. We'll use the "conservative" coordination method, which ignores the effects of fuse cooling during the reclosing time intervals (contacts open) of the recloser....
1. Note that one set of three-phase CTs and associated relays constitutes a single CT secondary circuit. Fig. 1. CT secondary circuits for radial feeder scheme. Regardless of the number of secondary windings in a circuit, the secondary circuit should be solidly grounded to the grounding grid ...
1. A gasification device for converting one or more feed material into syngas, comprising: a crucible for holding an electrically conductive material; at least one electric heater in the vicinity of the crucible, the at least one electric heater supplied with electricity to generate heat so as ...
Crews isolate a section of cable and apply a dc hipot voltage. If the cable holds the hi-pot voltage, crews proceed to the next section and repeat until finding a cable that cannot hold the hi-pot voltage. Because the voltage is DC, the cable must be isolated from the transformer....
For instance, if you were to plug the Transformer/Distro directly into a generator running with no load and feed the supply side (primary) of the transformer with the generator's 240V output, you will get 126 Volts out on the secondary side where you would plug in lights. We have ...
Crews isolate a section of cable and apply a dc hipot voltage. If the cable holds the hi-pot voltage, crews proceed to the next section and repeat until finding a cable that cannot hold the hi-pot voltage. Because the voltage is DC, the cable must be isolated from the transformer....