A potential transformer (PT), also known as a voltage transformer, is designed to step down high voltage to a lower, manageable level for measurement and control purposes. It provides precise voltage scaling and isolation for instrumentation and protection systems.
By reducing high voltage to a standard level, it allows meters and relays to safely monitor and measure voltage without being directly exposed to high voltage.
A potential transformer (PT) works by having a primary winding connected to the high voltage line and a secondary winding which produces a lower voltage proportional to the primary voltage. This lower voltage is then used to drive measuring instruments, meters or relays.
The ratio between the primary and secondary windings determines the voltage scale.
A power transformer is designed to transfer electrical energy between different voltage levels in power distribution systems. It is used to increase or decrease voltage levels to ensure efficient transmission and distribution of electrical energy. Power transformers are generally larger and designed for high power ratings compared to other types of transformers.
Power transformers are used in various areas of the power grid, including power plants, substations and distribution networks.
They are used to adjust voltage levels at power plants to levels suitable for long-distance transmission and then to local distribution systems. Their role is essential in ensuring that electrical energy is transmitted efficiently and delivered safely to consumers.
Potential transformers measure the voltage of high-voltage electrical systems, reducing it to a lower, more manageable level. They provide accurate measurements of high voltage on the primary side by producing a proportionally lower voltage on the secondary side.
This enables safe and accurate monitoring, control and protection of electrical systems.