1 Answer
PT (Potential Transformer) is used in transformers to measure high voltages and provide a scaled-down, safe version of the voltage for measurement and control purposes.
Here’s a simple explanation of why PT is used:
1. **Voltage Measurement**: In power systems, the voltage can be very high, and directly measuring these voltages could be dangerous. A PT steps down the high voltage to a lower, manageable value. This allows meters and relays to measure the voltage accurately without exposing them to dangerous levels.
2. **Safety**: The reduced output voltage from the PT is safe for instruments and people working with the equipment. It isolates the measurement devices from the high-voltage circuits.
3. **Accuracy and Protection**: By using PTs, electrical engineers can monitor and protect the system by connecting measuring instruments or control circuits without affecting the power system’s operation.
So, in short, PTs help in safely measuring high voltages and ensuring proper control and protection of the power system.
Here’s a simple explanation of why PT is used:
1. **Voltage Measurement**: In power systems, the voltage can be very high, and directly measuring these voltages could be dangerous. A PT steps down the high voltage to a lower, manageable value. This allows meters and relays to measure the voltage accurately without exposing them to dangerous levels.
2. **Safety**: The reduced output voltage from the PT is safe for instruments and people working with the equipment. It isolates the measurement devices from the high-voltage circuits.
3. **Accuracy and Protection**: By using PTs, electrical engineers can monitor and protect the system by connecting measuring instruments or control circuits without affecting the power system’s operation.
So, in short, PTs help in safely measuring high voltages and ensuring proper control and protection of the power system.