# Electric current collectors

What are current collectors? Current collectors are components fitted to an electric equipment in motion to collect electric current required for its operation from a stationary busbar. They can be…

# Instrument transformers – Definition, types and connection

Definition of instrument transformers Instrument transformers are current and voltage transformation devices that are used to step down the transmission and distribution line voltages and currents to levels that can…

# Difference between single-phase and three-phase power AC supplies

Anyone who uses electricity and have heard of terms: single-phase and three Phase, maybe trying to understand the difference between them. This article narrates the differences between a single-phase power…

# Why is electricity transmitted at high voltages?

You might have noticed huge towers supporting the high voltage transmission lines in your locality. These high voltage lines transmit electric power generated at power stations which are situated at…

# Difference between Short circuit and overload

Short Circuit A short circuit occurs when two or more current-carrying conductors of different phases or different voltage levels or different terminal (in DC circuits) come in contact with each…

# Power Factor – Definition, Importance, Calculation and Correction techniques

In an AC power system, the power factor is a very important parameter that defines how efficiently electrical power is being utilized by the load. It is a rational number…

# What is ammeter selector switch?

Ammeter selector switch is basically a normal three position switch. In large Electrical distribution panels, an ammeter is used to monitor the current through each line. (more…)

# Which is the most common fault occuring in the power system?

The most common fault occurring in the power system is  a Single line to ground fault. Almost 70 per cent of faults occurring is Single line to ground faults.

(more…)

# What are the different faults occurring in the overhead transmission lines?

## What are the different faults occurring in the overhead transmission lines?

1.       Single line to ground fault.

2.       Line to line fault.

3.       Double line to ground fault.

4.       Line to line to line fault (Three phases are short-circuited)

5.       Three line to ground fault. (more…)