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. 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. 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 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 are classified into different categories based on factors such as. The transformer permits multiple voltages to be leveraged in the design of the system. This material does not replace the extensive training.

The power available is 3 phase 240 volts line to neutral. 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. The efficiency of a transformer is the ratio of the power it delivers to the load to the power it absorbs from the supply. Most commercial and industrial loads require a three phase transformer to transform the three phase distribution voltage to the ultimate utilization level.

Energized transformers and live distribution lines present the risk of electrical shock. 3 phase distribution transformers generally have a delta triangular connected primary winding and a star wye connected secondary winding. The connection diagrams tables and other data in this handbook are intended to be aids for field personnel. The purpose of the grounding electrode and grounding electrode conductor is to connect the separately derived system transformer grounded conductor or equipment to ground earth to limit the voltage imposed by line surges and to stabilize the transformer secondary voltage to ground during normal operation photo 3.

Advantages to designing a system with low voltage transformers. The square d distribution transformer is designed to supply power throughout the building. Ge provides a broad array of distribution transformers to support a variety of applications.