However, the crucial difference between the resistor and the capacitor is that a resistor is an element that dissipates electric charge or energy. As against, a capacitor is an element that stores electric charge or energy. Basically, a resistor is used to limit the flow of current through a circuit.

The time required for the capacitor to be fully charge is equivalent to about 5 time constants or 5T. Thus, the transient response or a series RC circuit is equivalent to 5 time constants.

To calculate the time constant of a capacitor, the formula is τ=RC. This value yields the time (in seconds) that it takes a capacitor to charge to 63% of the voltage that is charging it up. After 5 time constants, the capacitor will charged to over 99% of the voltage that is supplying.

Connect the probes to two ends of the unknown component (ignore polarity). If reading shows zero, it is an inductor. If reading shows some constant value other than “1” then it is a resistor. If reading keeps increasing and finally settles on “1” then it is a capacitor.

Transformers are used in power system for transmission of power without losses at high voltages. A capacitor bank in the power system is used for improvement of power factor . They provide reactive power to compensate for the reactive power from the supply for same real power being consumed by the load.

CVTs in combination with wave traps are used for filtering high-frequency communication signals from power frequency. This forms a carrier communication network throughout the transmission network, to communicate between substations. The CVT is installed at a point after Lightning Arrester and before Wave trap.

Definition: The capacitive voltage transformer step-down the high voltage input signals and provide the low voltage signals which can easily measure through the measuring instrument. The Capacitive voltage transformer (CVT) is also called capacitive potential transformer.

CVT is rated for high voltage levels above 100 kV, while PT’s aren’t designed for such large values. It may be that CVT is just used for Metering and Protection Purpose but when a CVT is used in the Transmission Line then it also serves the purpose of PLCC.

Unless a burden (i.e. meters, relays, etc.) is connected to the CT, current transformers should always be shorted across the secondary terminals. The reason is very high voltages will be induced at the terminals.

The CVT (ferro) uses the unique principle of ferroresonance: operation of a transformer in the region of magnetic saturation. In the saturation region of the curve (red), a large change in input voltage results in a small change in output voltage.

CVTs are primarily used for voltage measurement, providing voltage signals to metering units, protection relay devices, and automatic control devices. CVTs can also be used to couple power line carrier technology to the power system for communications purposes.

Constant Voltage Transformers (CVT) Constant voltage transformer (CVT) manufactured and supplied by Servokon is the most preferred transformer over conventional stabilizers. CVT ensures complete protection against spikes and also provide controlled output voltage.

A continuously variable transmission (CVT) is an automatic transmission that can change seamlessly through a continuous range of gear ratios.

Applications of Voltage Transformers On other hand PTs used for protection called as protection voltage transformers. In some cases PTs are used for both metering and protection purposes, in such cases, one secondary winding is connected to metering and other secondary winding is used for protection.