Magnetic Oil Level Gauge in Transformers: Installation, Working & Maintenance Guide

Transformer reliability is determined by various aspects, such as the insulation, temperature management, and the right transformer oil level. The transformer oil plays an important role in terms of insulation and cooling; hence, keeping track of the oil level is very crucial for safe and reliable operations of transformers. The magnetic oil gauge is an easy way through which the transformer operator can keep track of the oil level of the transformer conservator without having to come into physical contact with the oil.

For those who operate the transformer, maintenance staff, and electrical equipment operators, knowledge of how the magnetic oil gauge operates and installation procedures is vital in avoiding any operational problems that may arise.

What is a Magnetic Oil Gauge?

Magnetic oil gauge is another name for the MOG. This is a device whose aim is to indicate the oil level in the transformer conservator.

As the level of oil in the transformer fluctuates, the float rises and falls. The magnet, which is attached to the float, transmits this movement to the exterior indicating system, ensuring that the level of oil is monitored through a reading on the indicator without the need for a direct mechanical link.

This is very handy in cases of oil-filled transformers where constant oil level observation is required.

How Does a Magnetic Oil Level Gauge Function?

The working principle of a magnetic oil level gauge is fairly easy to understand.

In the conservator, the float rises and falls in accordance with the level of oil in the transformer. This results in the rotation of the magnet attached to the float. The movement of the magnet is conveyed to the exterior indicator via magnetic coupling, moving the pointer of the gauge to correspond with the level of oil.

This occurs in four stages:

Oil level changes: Transformer oil is capable of expanding and contracting due to operating conditions and temperatures.

Float changes: The float that is installed in the conservator will rise or fall depending on the oil level.

Magnetic changes: The magnetic device is sensitive to the float movements.

Pointer changes: The changes are reflected on the pointer, indicating the oil level on the dial.

Why Is a Magnetic Oil Gauge Important for Transformers?

Protect transformer performance with accurate oil level monitoring. Explore the complete MOG guide. Read more on dhrutisales.co.in