T1 transformer full load current, inrush current and damage points. Customer transformer full load current, inrush current and damage points. Initial relay setting criteria (50A, 50B, 51): At the feeder breaker, the 50 A is set for the fault current at 1 km. 50 B is set for the fault current at the recloser. At the recloser, the 50 A (high set) element pickup is set for 4 times customer transformer inrush, then rounded to the nearest 50 amps primary. 50 B is set for 2 times customer transformer inrush (rounded to nearest 50 amps). The 51 element pickup for both relays is set for 55% of the customer transformer inrush, with that value rounded to the nearest 50 amps. Time dial and curve family is specified for each relay location on results sheet. Fault currents and 51 relay operating times for faults at various points in the power system     F2          3/0 ASCR: (0.348 + j0.502) Ω/km, recloser at 2.5 km, total length 5 km, feeder voltage 7.20 kV

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Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.