Distribution Transformer Diagram
The connection diagram on the left shows how a delta delta connection can be made either with three single phase transformers or with one three phase transformer.
Distribution transformer diagram. Advantages to designing a system with low voltage transformers. This type of 1 1 transformer is classed as an isolation transformer as both the primary and secondary windings of the transformer have the same number of volts per turn. The transformer permits multiple voltages to be leveraged in the design of the system. The power available is 3 phase 240 volts line to neutral.
The secondary star configuration allows for a 3 phase and neutral dy1 supply providing line and phase voltages and currents. All work on this equipment should be performed only by qualified specialists. Distribution transformers highly reliable state of the art distribution solutions. Mounting location pole pad underground vault type of insulation liquid immersed or dry type number of phases single phase or three phase voltage class basic impulse insulation level bil.
Our product lines include pole and pad mounted single and three phase solutions as well as primary and secondary substation transformers cast coil transformers. All of eaton s transformers are specifically designed to meet federal energy efficiency requirements for voltage transformation as near as practically possible to the load for economy and distribution of power. Energized transformers and live distribution lines present the risk of electrical shock. The efficiency of a transformer is the ratio of the power it delivers to the load to the power it absorbs from the supply.
This material does not replace the extensive training. The connection diagrams tables and other data in this handbook are intended to be aids for field personnel. 3 phase distribution transformers generally have a delta triangular connected primary winding and a star wye connected secondary winding. Most commercial and industrial loads require a three phase transformer to transform the three phase distribution voltage to the ultimate utilization level.
I need a 3 phase distribution transformer 10 15 kva to provide 120 volts power to appliances. A three phase transformer is built for a specific connection and voltage transformation and the unit will have a nameplate with the internal connections shown. Distribution transformers are classified into different categories based on factors such as.