What is the function of breather and explosion vent in the power transformer?

If even after brushing the lower diaphragm, there is enough pressure and is not reduced, the upper diaphragm then bursts out to give way to release the inside pressure of transformer tank by thronging out oil and gases. In this way, explosion vent of transformer prevents mechanical damage to the transformer tank.

What are the functions of a breather conservator cooling tubes and explosion vent in a transformer?

Breather As the temperature variations cause the transformer oil to expand and contact, air flows in and out of the conservator tank. This air should be free from moisture. Breather serves this purpose. A breather is attached to the end of the air pipe such that the air enters and exits the conservator through it.

Why is a conservator tank bushing breather a function?

When load on transformer increases or when the transformer under full load, the insulating oil of the transformer gets heated up, expands and gets expel out in to the conservator tank present at the top of the transformer and subsequently pushes the dry air out of the conservator tank through the silica gel breather.

What is the function of breather and conservator in a 3 phase transformer?

The breather is used in the transformer to filter out the moisture from the air. Breather consists of silica gel which absorbs moisture from the air. Conservator tank present at the top of the transformer which allows adequate space for expansion of oil.

What is the function of explosion vent?

An explosion vent is a non-reusable safety device designed to burst at a set pressure along a specific rupture line, relieving pressure and providing a pathway for deflagration hazards to safely escape.

What is explosion relief venting?

Explosion relief consists in taking out explosion effects (mainly pressure), through a venting system, outside the protected device. As a result, the pressure inside the device is reduced to a safe level. Others systems should be applied outdoors due to a direct outburst of the explosion wave to atmosphere.

What is the main function of breather?

Transformer Breather Helps to Prevent Atmospheric Moisture and Reduce Maintenance Costs. During the breathing cycle of a transformer, it is crucial to prevent atmospheric moisture from entering the transformer, which can contaminate the oil.

What causes the humming sound in a transformer?

Electric hum around transformers is caused by stray magnetic fields causing the enclosure and accessories to vibrate. Magnetostriction is a second source of vibration, in which the core iron changes shape minutely when exposed to magnetic fields. Around high-voltage power lines, hum may be produced by corona discharge.

What is the use of Conservator tank in transformer?

Function of Conservator Tank of a Transformer When transformer is loaded and when ambient temperature rises, the volume of oil inside transformer increases. A conservator tank of transformer provides adequate space to this expanded transformer oil. It also acts as a reservoir for transformer insulating oil.

What are the different types of explosion vents?

There are four main types of explosion vents:

• Round.
• Square.
• Rectangular.
• Domed (able to withstand extreme vacuums so that they won’t implode)

How does an explosion release panel work?

The explosion vent panel is designed to rupture safely as a result of an over-pressure. The deflagration pressure is able to escape first through the vent opening and then into the atmosphere. This prevents the explosion from gaining momentum and having violent consequences.