To understand why transformers explode, you need to understand how quick a millisecond is. 8 milliseconds is tantamount to 1/125 of a second. This is the typical standard camera shutter speed and an average hummingbird flips his wings in 60 milliseconds. Yes. 60 milliseconds is fast enough, but sometimes, it is not. To explore a range of transformers we provide, visit http://www.surplec.com/produits/transformateurs-sous-station/.
Understanding the workings of transformers and the basics of power grid is like thinking a river that circles the water park. A power gird is similar to a huge circuit just like the river circulating around the water park. The electricity is flown from the power plant, out to other consumers and then comes back to the power plant. This is done within limitations of the circuit. Think about it like the flow of electricity at a constant speed aka frequency and constant depth aka voltage. A real life power grid is made up of many internetworked circuits backed up. Many of these circuits do not work at the same voltage.
Retrospect on the water park which has many various river rides, one for the kids is shallow, and for the teens is deep and one for the adults. If you move in a raft right from shallow to deep, you would need an alternative to do this, and this is where transformer comes to the rescue. However, when it is over-flooded with too much electricity, then a sudden surge can pose a risk of explosion of the transformer. As transformers have the ability to detect an energy spike, they are being programmed to turn off automatically, however, it takes around 60 milliseconds for the shutdown. But, as fast as those milliseconds may seem to you, they may be still too slow to put a halt to the electrical overload/
A surge may have arisen from n number of sources like a car colliding with a pole, lightening or even a tiny squirrel can cause a sudden alteration in the electricity flow. Inside these huge cylinders, there are many gallons of mineral oil stored, this is something you notice at a drug store, this very oil keeps the circuit cooled. However, when electricity goes overboard, the circuits tend to melt, failing in a glorious shower of sparks and sometimes setting the mineral oil on fire. This failure will lead to a loud bang and very often it sends away a metal shrapnel that was once a functioning transformer everywhere.
