How does a pantograph train work?

Pantograph is an apparatus which mounted on the roof of electric train to collect power through with an overhead tension wire. It lift or down on the basis of the wire tension. Typically a single wire is used with the return current running through the track. It is a common type of current collector.

Why do trains have two pantographs?

This is because DC can only provide low voltage electric, to increase the power (output) of the locomotive, the current (A) have to be higher. However, if the current is too high, the fuse will broken. In order to reduce this risk, both pantographs will up.

What are the parts of a pantograph?

Pantographs are a special devices mounted on electric trains to collect current from one or several contact wires. They consist of a pantograph head, frame, base, and drive system, and their geometrical shape is variable.

How long does a pantograph last?

Also previously mentioned, the overhead wires are staggered so that they make a zigzag motion over the pantograph. This ensures that the carbon shoe wears down evenly across the length of its surface. Under normal wear and tear, a carbon shoe can last from 9 months to a year before it needs to be replaced.

What is the shape of pantograph collector?

Explanation: The shape of the pantograph collector is a pentagon. It has a conducting strip which is pressed against contact wire with the help of springs.

Which material is used in pantograph?

Pantograph strips are often made of steel, copper alloy, pure carbon, and metal-impregnated carbon, which have different principles of interaction with the contact wire. Carbon strips have smooth surfaces and no rough part that may abrade the contact wire.

How many pantographs does a train have?

two pantographs
On some systems using three phase power supply, locomotives and power cars have two pantographs with the third-phase circuit provided by the running rails.

What voltage is a train line?

Overhead line equipment (OLE) refers to the overhead wires and supporting infrastructure that carry electricity at 25,000 volts to power electric trains.

Does train use fuel?

Diesel fuel is stored in a fuel tank and delivered to the engine by an electric fuel pump. Diesel fuel has become the preferred fuel for railroad locomotive use due to its lower volatility, lower cost, and common availability.