Advantech ADAM-6050 18-Channel Isolated Digital I/O Modbus TCP Module ADAM-6050-BE Scheda Tecnica
Codici prodotto
ADAM-6050-BE
ADAM-6000 Series User Manual
254
C.2.4 Wire impedance
Figure C.5: High Voltage Transmission
• What’s the purpose of high voltage transmission? We have all seen high
voltage transmission towers. The power plant raises the voltage while
generating the power, then a local power station steps down the voltage.
What is the purpose of high voltage transmission wires ? According to
the energy formula, P = V * I, the current is reduced when the voltage is
raised. As you know, each cable has impedance because of the metal it
is made of. Referring to Ohm’s Law, (V = I * R) this decreased current
means lower power losses in the wire. So, high voltage lines are for
reducing the cost of moving electrical power from one place to another.
generating the power, then a local power station steps down the voltage.
What is the purpose of high voltage transmission wires ? According to
the energy formula, P = V * I, the current is reduced when the voltage is
raised. As you know, each cable has impedance because of the metal it
is made of. Referring to Ohm’s Law, (V = I * R) this decreased current
means lower power losses in the wire. So, high voltage lines are for
reducing the cost of moving electrical power from one place to another.