Sage-Tips

What causes oil leakage in transformer?

Transformers are susceptible to oil leakage which can be caused by corrosion or faulty welds. This leads to breakdown of fins, flanges, valves, seals, and pipework. These costly implications can be quickly and simply prevented using the Belzona Transformer Leak Sealing Solution.

What is hermetically sealed transformer?

Hermetically sealed transformer is a transformer design which has no conservator. Here the dielectric insulating fluid in the transformer tank is completely sealed and is in zero contact to the atmosphere. The design avoids air in the transformer tank thereby avoiding sludging and oxidation of the dielectric fluid.

Why transformer is used in sodium Vapour lamp?

Sodium vapour lamps are also known as polarimeter lamps used in physics lab. This transformer is an auto leak type, giving a starting voltage 440 v which automatically reduces when the lamp has struck.

What is the meaning of hermetically sealed?

A hermetic seal is any type of sealing that makes a given object airtight (preventing the passage of air, oxygen, or other gases). The term originally applied to airtight glass containers, but as technology advanced it applied to a larger category of materials, including rubber and plastics.

How does a hermetically sealed compressor work?

In hermetically sealed compressor, the compressor and the motor are enclosed in the welded steel casing and the two are connected by a common shaft. This makes the whole compressor and the motor a single compact and portable unit that can be handled easily.

How do you check the oil on a transformer?

To assess the insulating property of dielectric transformer oil, a sample of the transformer oil is taken and its breakdown voltage is measured. The lower the resulting breakdown voltage, the poorer the quality of the transformer oil. The transformer oil is filled in the vessel of the testing device.

Which ballast is used in sodium lamp?

Operation. The inductive ballast is made up of a coiled wire. The coil creates a magnetic field inside when a current is applied. It stores the energy of the current in the magnetic field it creates.

Is a hermetically sealed maintenance free transformer the solution to this?

Yes, hermetically sealed maintenance free transformer is the solution to this. The next question that arises is: what hermetically sealed means and in what way it is different from conventional oil filled transformer?

Can a leaking transformer be repaired without draining the oil?

Repairs can be made without draining the oil, or removing bushings. Often the repairs can be made with the transformer in service. This article presents the techniques used by a company that has been performing leak repairs on electric substation equipment since 1988, and works exclusively on electric substation equipment.

Why is there oil coming out of my transformer?

Since the hermetically seal transformer is all seal up, the transformer oil had no place to go but start to leak from the transformer seal. As the transformer oil is heated up the viscosity of the oil will become very thin and it can slip out thru these seal. Most of the oil will leak from the seal from the top cover of the transformer.

What are the most common problems with electric transformers?

One of the greatest issues is oil leaks. Gaskets on bushings, radiator flanges, pumps, piping etc. are deteriorating and leaking. If oil is leaking out, there is a risk of moisture and air being drawn in via capillary action, compromising the transformer oil insulating qualities.