The design of commercial buildings changes with the trend, but their electrical loads remain the same. The right size and selection of transformer ensure proper accommodation of these loads. In this article, distribution transformers India suppliers will share the best ways of selecting and sizing transformers for commercial structures. This article brings many useful design concepts for sizing and selecting transformers in the design of electrical systems for commercial sites.
Transformers are used to change voltage levels to supply electrical loads with the required voltages. Transformers are used to supply required incoming electrical voltage to the buildings. There are several ranges available for primary and secondary voltage transformers.
You can locate the transformers either outdoor or inside the electrical room of the building or other areas as permitted by code. The electrical phase features related to the transformer’s primary side is 3-phase, delta, or 3-wire connected. The secondary is 3-phase, wyes or 4-wire connected.
Different types of constructions
Manufacturers are making distinct constructions for transformers that are used by the commercial sector. A few designs are as under-
- Ventilated dry-type transformers
These transformers are ventilated by air, use space for clearance, and have distinct insulating materials used for augmentation of the dielectric strength of the air. These transformers are enclosed by windings for mechanical protection and the safety of personnel. This type of transformer is used inside the buildings. They have indoor electrical system distribution for these transformers.
- Sealed dry-type transformers
These transformers are similar to a dry model. The only difference is that they have enclosed tank with nitrogen or other dielectric gas that protects the windings. You can install them inside and outside. They perform efficiently even in corrosive or harsh environments.
- Cast coil transformers
These types of models are built with the primary and secondary windings encapsulated in reinforced resin. You can install them in the environment that is exposed to moisture or airborne contaminants.
- Oil-filled transformers
These transformers are made with the windings enclosed in an oil-filled tank with insulating mineral oil. It is good practice to regularly test these transformers to determine dielectric breakdown that impacts on its lifecycle.
- Non ventilated dry-type transformers
These are alike ventilated models but are completely enclosed. You can install these transformers in areas having corrosive or dirty environmental conditions where you cannot install a ventilated transformer model.
So, you have an idea of selecting transformers. If you have anything to say to distribution transformers India suppliers, pour your thoughts in the comment section below.