Magnetic Oil level Gauge (MOG) in electrical transformer

A magnetic oil level gauge, also known as a magnetic float gauge, is a device used to measure the oil level inside an electrical transformer. It consists of a magnetically-sensitive float that is suspended inside the transformer tank, connected to a gauge or indicator on the outside of the transformer.

The float is made of a magnetically-sensitive material, such as ferromagnetic steel, that is attracted to the transformer’s magnetic field. As the float rises or falls with the oil level inside the transformer, it moves a pointer or needle on the gauge, indicating the current oil level.

Magnetic oil level gauges are commonly used in electrical transformers because they are reliable, accurate, and easy to install and maintain. They do not require any electrical power to operate, and they do not produce any heat or spark, which makes them safe to use in a transformer environment.

Magnetic oil level gauges are also relatively inexpensive compared to other types of oil level gauges, such as capacitive or ultrasonic gauges. However, they do have some limitations, such as being less accurate in measuring oil levels at the bottom of the transformer tank, or in cases where the transformer oil has high levels of contaminants or debris.

Overall, magnetic oil level gauges are an essential part of any electrical transformer, as they help to ensure that the transformer has the proper amount of oil for proper operation and protection of the transformer’s internal components.