Do your transformers contain PCB?

All Dry-type and Liquid filled distribution transformers manufactured by MGM Transformer Company are PCB (polychlorinated biphenyl) free at the time of shipment.
MGM is mainly known for its dry type transformers, but we also make liquid filled transformers and we can design and build with any fluid on the market. Dry type transformers are, you guessed it “dry”, so they are cooled by the air that passes through it.
Liquid Transformers are cooled by the fluid that it’s immersed in. Fluid is used to cool the windings and provide optimal performance in the manner below. The
bottom of the tank is where the fluid is at its lowest temperature. The fluid flows up through the windings and is heated by the windings which in turn makes it rise to the top. At the top of the tank the fluid is at its hottest temperature and exits the tank to go through a series of radiators where it’s cooled and then flows back down to the bottom of the main tank. This process is continuous and can be aided by fans mounted on the radiators to cool the radiators at an even faster rate. There are several types of fluids offered but today’s feature is on the PCB filled transformers that are still floating around (no pun intended).
Polychlorinated biphenyls (PCBs) were used as transformer oil, since they have high dielectric strength and are not flammable. Unfortunately, they are also toxic, bio-accumulative, not at all biodegradable, and difficult to dispose of safely. When burned, they form even more toxic products, such as chlorinated dioxins and chlorinated dibenzofurans.
Mixtures of polychlorinated biphenyls (PCB’s) were manufactured commercially in the US until 1977 and used as transformers fluids because of their nonflammable nature and chemical stability.
PCBs were widely used for about fifty years and produced under a variety of trade names, the most common of which were Askarel® and Pyranol®. Although chemically stable, PCBs would only slowly biodegrade. That is that they tended to persist in nature as opposed to decomposing into basic elements. There were numerous health studies conducted that documented their potential effects on both humans and wildlife. As a result, Congress passed the Toxic Substances Control Act. This act singled out PCB’s for regulation and directed the U.S. Environmental Protection Agency to implement controls. The majority of transformers were either disposed of under federal guidelines but there are still quite a few plants out there which still have PCB filled transformers.
Changing out these PCB filled transformers requires a certain “know-how” which is right up our alley. We can match dimensions with existing units and even size up the kVA when doing so. If there are industrials in your area that may need changing out of PCB transformers you should contact us immediately.