Electrical Circuit Of an X-ray unit Flashcards
Components in transmission and distribution system
- National grid network
- Transformer stations
- Switch zones
- Main substation
Main substations
Has transformers that step-down the voltage of electrical power to suitable value for distribution
The switch zone
allows the electrical energy to be transmitted
through the National Grid Network
The national grid network
connects power stations at different
places together & transmits electrical power to various places throughout the country
The role of a transformer in the transmission and distribution of power.
- Minimizing Power Loss:
- Efficient power Transmission:
- Voltage Step-down:
- Carrying a three-phase supply on a smaller
number of conductors
Minimizing power loss
Power loss in transmission lines is primarily due to heat generated by the current flowing through the wires (I²R losses). By reducing the current, these losses are dramatically decreased.
Efficient power transmission
High-voltage transmission allows for the use of thinner, less expensive conductors, further reducing costs and improving efficiency.
Voltage step-up and down
- At the power generating station, transformers increase the voltage of electricity to extremely high levels. This process is called “step-up” transformation.
- At the receiving end, near consumers, transformers reduce the voltage to levels suitable for distribution and consumption. This is called “step-down” transformation.
Carrying a three-phase supply on a smaller
number of conductors
- Each phase has 2 wires from each generationg coil.
connection of power to x-ray unit
- permanent fixed connection
- Temporary connection
Permanent fixed connection
- Major unit supply is drawn from 2 or 3 phase
- A static x-ray unit is connected to the power through the isolator
temporary connection
- No isolator box used
- Used mostly in mobile equipments
