In the following circuit, the lights (lamps) loads (L) are balanced. Each lamp (L) is set at 500 W and 120 V. The fixed resistance (i.e. lamps) only draws the specified current. The three-phase motor is at 5kW and 0.8 reverse power factor. The secondary side of the transformer (lower part of the network) supplies voltage between 208 V balanced phases (ll-line line). The motor is 1500 meters away from the side (length from the secondary side). Hattin resistance and reactance values are 0.403 ohms for 1000 meters and 0.143 ohms. In that case a) Calculate the phase neutral voltage of the motor. b) Calculate the phase-to-phase voltage of the motor.
Three-Phase Transformers
Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.
Transformer
Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.
In the following circuit, the lights (lamps) loads (L) are balanced. Each lamp (L) is set at 500 W and 120 V. The fixed resistance (i.e. lamps) only draws the specified current. The three-phase motor is at 5kW and 0.8 reverse power factor. The secondary side of the transformer (lower part of the network) supplies voltage between 208 V balanced phases (ll-line line). The motor is 1500 meters away from the side (length from the secondary side). Hattin resistance and reactance values are 0.403 ohms for 1000 meters and
0.143 ohms. In that case
a) Calculate the phase neutral voltage of the motor.
b) Calculate the phase-to-phase voltage of the motor.
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