Distribution Transformer Diagram

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 transformer diagram. The secondary star configuration allows for a 3 phase and neutral dy1 supply providing line and phase voltages and currents. I need a 3 phase distribution transformer 10 15 kva to provide 120 volts power to appliances. 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.

The efficiency of a transformer is the ratio of the power it delivers to the load to the power it absorbs from the supply. All work on this equipment should be performed only by qualified specialists. 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. This material does not replace the extensive training.

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. 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. 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.

Energized transformers and live distribution lines present the risk of electrical shock. The square d distribution transformer is designed to supply power throughout the building. Most commercial and industrial loads require a three phase transformer to transform the three phase distribution voltage to the ultimate utilization level. 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 connection diagrams tables and other data in this handbook are intended to be aids for field personnel. Ge provides a broad array of distribution transformers to support a variety of applications.