Low voltage distribution modules
Introduction
A transformation center is an electrical installation whose main function is to modify the voltage levels "Voltage (electricity)") of the electrical energy it receives and distributes.
Electrical energy can come from a high voltage network or a medium voltage network, and is delivered to a medium or low voltage network for consumption by end users.
The most common voltage levels for end users are 380 volts for three-phase current and 230 volts for single-phase current.
A transformer center is a specific type of electrical substation, which is a more general installation that can perform other functions in addition to voltage transformation, such as control, protection and interconnection of electrical networks.
Items
Transformers
The main component of a transformation center is the transformer, or in some cases, the autotransformer.
A transformer is an electrical device that allows the voltage and current levels of an alternating electrical signal to be modified using the principle of electromagnetic induction.
An autotransformer is a special type of transformer that has a single common winding for the primary and secondary, reducing the size and cost of the device.
A transformation center may contain one or more transformers or autotransformers, depending on the total power required by the installation.
Each transformer or autotransformer can feed a set of distribution lines, with a maximum of 8 lines.
It is rare that they work in parallel, that is, that they share the same voltage input and output. Furthermore, when there is more than one in the transformation center, the load must be balanced between them to avoid work overload.
Cells
They are cells that receive the lines from outside the center. They are equipped with a switch or a switch-disconnector. Despite their name, they can perform line-in or line-out function.
It contains the opening elements of the different lines of tension. In which case a visible cut could be observed, whenever necessary.
It allows the cables to be traced back to the busbar formed by the set of cells.