1. INTRODUCTION TO LOAD SHEDDING TRANSFORMER

2. INTRODUCTION
Load shedding = cutting off the electrical current on certain lines when the power become greater the supply.
Load shedding transformer is defined as it will convert 3-phase supply to 1-phase supply.
Hence it is used to convert agriculture feeder power supply from 3-phase to 1-phase during 16-hours when demand become greater than the available power supply.

3. When the demand becomes greater then the available power supply, at that time the load shedding become necessary.
Hence load shedding transformer performed dual duties. It is used for shedding the load as well as it is provided 1-phase power supply to consumer.

4. CIRCUIT DIAGRAM

5. CIRCUIT DESCRIPTION
As shown in figure outgoing under ground cable is contained 3-phase supply during some time when agriculture consumer require 3-phase power supply at that time period load shedding transformer is disconnected from agricultural feeder & 3-phase is directly connected to the change over switch at the dotted position. Hence 3-phase & 1-phase is available at the secondary of distribution transformer.

6. During the remaining time demand become greater than the available power supply at that time position of switch will be change & now load shedding transformer is connected in system.

7. Advantages
After the invention of LST , theft of power supply is totally disappeared on agriculture feeder.
Vary large number of working class families residing at the site of Agr. They get the continuous 1-phase supply.
It is used for shedding the load, when demand is greater than the available power supply.

8. Thank you