What is the purpose of neutral section in over head line choose the correct option?

A neutral section is a discrete piece of equipment included within the overhead contact line (OCL) of an alternating current (AC) electrified railway. It provides the function of electrical separation between two power supply systems.

What are traction motors on a train?

Traction motors are powered by electricity and generate the power to rotate the wheels of the train. The turning force produced by traction motors is transmitted to the wheels via the driving gear unit and axle. Traction motors are typically mounted in the trucks where the wheels are housed.

What is railway tension length?

2.26 Tension Length. Length of conductor which is stretched between the two anchor points. 2.27 Versine. The versine is the maximum offset of the rail on which spans have been measured (Para 5.1) of the curved track from the chord connecting two points, each opposite adjacent masts.

What is neneutral section in railway?

Neutral Section is defined as short insulated dead overhead equipment separating sectors fed by two adjacent substations which are normally connected to different phases. The neutral section is a dead zone and therefore, the locomotive has to negotiate the section in momentum.

Why do locomotives switch off at the neutral section?

The neutral section is a dead zone and therefore, the locomotive has to negotiate the section in momentum. The locomotive is switched off while negotiating the neutral section to avoid flash over at the time of exit and re-entering the live zone.

What are the different types of neutral section?

There are three types of neutral section namely (1) Conventional Type (2) Short Neutral Section – Section Insulator and PTFE type (3) Dynamic Neutral Section or ASNS type The arrangement consists of five spans of overhead equipment in which the central span has to be strictly of 49.5 m length.

How to pull a train with a short neutral section?

This will require a assisted loco be sent to pull the train. A short neutral section is of 5 m in which the dead zone is electrically insulated by section insulator with mechanical continuity. With section insulators the speed is restricted to 100 Kmph if the runners of the section insulators are in trailing direction or 70 Kmph otherwise.