The document summarizes the author's summer training at the NSPCL power plant in Rourkela, India. It describes the key components of the plant including the coal handling plant, demineralization plant, boiler, air preheater, economizer, superheater, electrostatic precipitator, fans, condenser, cooling tower, turbines, alternator, and ash handling plant. It also discusses the switchyard equipment like isolators, transformers, circuit breakers and bus bars. The control room manages and monitors operations of the entire plant.
This is a presentation series part 3 on Frequently Asked Questions on Steam Turbines in large steam power plants. All questions are answered properly and any doubt may be mailed to the writer.
The presentation details about the Boiler Operation specifically while lightup of boiler and loading of boiler. the course participants discuss in details about the operations carried in their respective power stations
This is a presentation series part 3 on Frequently Asked Questions on Steam Turbines in large steam power plants. All questions are answered properly and any doubt may be mailed to the writer.
The presentation details about the Boiler Operation specifically while lightup of boiler and loading of boiler. the course participants discuss in details about the operations carried in their respective power stations
A gas turbine, also called a combustion turbine, is a type of internal combustion engine. It has an upstream rotating compressor coupled toa downstream turbine, and a combustion chamber in-between. Energy is added to the gas stream in the combustor, where fuel is mixed with air and ignited. In the high-pressure environment of the combustor, combustion of the fuel increases the temperature. The products of the combustion are forced into the turbine section
Visit https://www.topicsforseminar.com to Download
The Presentation discusses the Air-Heater Performance Indices and the Boiler Performance calculation. One can Calculate the air ingress in the air-heater and the boiler and losses incurred thereby. The presentation also describes in details about the boiler efficiency and its calculation.
Classification of nuclear power plant 2171910 , power plant engineering.Hitarth Shah
Main two types are :
Pressurised Water Reactor (PWR)
Boiling Water Reactor (BWR)
Pressurised Water Reactor (PWR)
Heat is produced in the reactor due to nuclear fission and there is a chain reaction.
The heat generated in the reactor is carried away by the coolant (water or heavy water) circulated through the core.
The purpose of the pressure equalizer is to maintain a constant pressure of 14 MN/m2. This enables water to carry more heat from the reactor.
The purpose of the coolant pump is to pump coolant water under pressure into the reactor core.
Pressurised Water Reactor (PWR)
Heat is produced in the reactor due to nuclear fission and there is a chain reaction.
The heat generated in the reactor is carried away by the coolant (water or heavy water) circulated through the core.
The purpose of the pressure equalizer is to maintain a constant pressure of 14 MN/m2. This enables water to carry more heat from the reactor.
The purpose of the coolant pump is to pump coolant water under pressure into the reactor core.
Pressurised Water Reactor (PWR)
Heat is produced in the reactor due to nuclear fission and there is a chain reaction.
The heat generated in the reactor is carried away by the coolant (water or heavy water) circulated through the core.
The purpose of the pressure equalizer is to maintain a constant pressure of 14 MN/m2. This enables water to carry more heat from the reactor.
The purpose of the coolant pump is to pump coolant water under pressure into the reactor core.
Pressurised Water Reactor (PWR)
Heat is produced in the reactor due to nuclear fission and there is a chain reaction.
The heat generated in the reactor is carried away by the coolant (water or heavy water) circulated through the core.
The purpose of the pressure equalizer is to maintain a constant pressure of 14 MN/m2. This enables water to carry more heat from the reactor.
The purpose of the coolant pump is to pump coolant water under pressure into the reactor core.
The presentation is based on the discussions of starting operations of a coal based thermal power plant. This presentation is based on the in-house training to the operation engineers of the thermal power plant. It describes the activity chart for the starting of boiler, Turbine and synchronising of Generator, picking up the load etc.
Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants
Introduction To Thermal Power Plant (Steam power plant)
GENERAL LAYOUT OF THERMAL POWER PLANT
COAL HANDLING PLANT
Power Plant cycles
1. Feed Water Cycle
2. Steam Cycle
3. Condensate Cycle
4. Cooling Water Cycle
5. Air And Flue Gas Cycle
Important Power plant equipment
Deaerator
Boiler Feed Water Pump
Heaters
Economiser
Boiler
BOILER DRUM ( STEAM DRUM)
SUPER HEATER
TURBINE
CONDENSER
A gas turbine, also called a combustion turbine, is a type of internal combustion engine. It has an upstream rotating compressor coupled toa downstream turbine, and a combustion chamber in-between. Energy is added to the gas stream in the combustor, where fuel is mixed with air and ignited. In the high-pressure environment of the combustor, combustion of the fuel increases the temperature. The products of the combustion are forced into the turbine section
Visit https://www.topicsforseminar.com to Download
The Presentation discusses the Air-Heater Performance Indices and the Boiler Performance calculation. One can Calculate the air ingress in the air-heater and the boiler and losses incurred thereby. The presentation also describes in details about the boiler efficiency and its calculation.
Classification of nuclear power plant 2171910 , power plant engineering.Hitarth Shah
Main two types are :
Pressurised Water Reactor (PWR)
Boiling Water Reactor (BWR)
Pressurised Water Reactor (PWR)
Heat is produced in the reactor due to nuclear fission and there is a chain reaction.
The heat generated in the reactor is carried away by the coolant (water or heavy water) circulated through the core.
The purpose of the pressure equalizer is to maintain a constant pressure of 14 MN/m2. This enables water to carry more heat from the reactor.
The purpose of the coolant pump is to pump coolant water under pressure into the reactor core.
Pressurised Water Reactor (PWR)
Heat is produced in the reactor due to nuclear fission and there is a chain reaction.
The heat generated in the reactor is carried away by the coolant (water or heavy water) circulated through the core.
The purpose of the pressure equalizer is to maintain a constant pressure of 14 MN/m2. This enables water to carry more heat from the reactor.
The purpose of the coolant pump is to pump coolant water under pressure into the reactor core.
Pressurised Water Reactor (PWR)
Heat is produced in the reactor due to nuclear fission and there is a chain reaction.
The heat generated in the reactor is carried away by the coolant (water or heavy water) circulated through the core.
The purpose of the pressure equalizer is to maintain a constant pressure of 14 MN/m2. This enables water to carry more heat from the reactor.
The purpose of the coolant pump is to pump coolant water under pressure into the reactor core.
Pressurised Water Reactor (PWR)
Heat is produced in the reactor due to nuclear fission and there is a chain reaction.
The heat generated in the reactor is carried away by the coolant (water or heavy water) circulated through the core.
The purpose of the pressure equalizer is to maintain a constant pressure of 14 MN/m2. This enables water to carry more heat from the reactor.
The purpose of the coolant pump is to pump coolant water under pressure into the reactor core.
The presentation is based on the discussions of starting operations of a coal based thermal power plant. This presentation is based on the in-house training to the operation engineers of the thermal power plant. It describes the activity chart for the starting of boiler, Turbine and synchronising of Generator, picking up the load etc.
Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants Gas Turbine Powerplants
Introduction To Thermal Power Plant (Steam power plant)
GENERAL LAYOUT OF THERMAL POWER PLANT
COAL HANDLING PLANT
Power Plant cycles
1. Feed Water Cycle
2. Steam Cycle
3. Condensate Cycle
4. Cooling Water Cycle
5. Air And Flue Gas Cycle
Important Power plant equipment
Deaerator
Boiler Feed Water Pump
Heaters
Economiser
Boiler
BOILER DRUM ( STEAM DRUM)
SUPER HEATER
TURBINE
CONDENSER
Mejia Thermal Power Station is located at Durlovpur, Bankura, 35 km from Durgapur city in West Bengal. The power plant is one of the coal based power plants of DVC
Half of the electricity produced by CEB is produced by this Lakvijaya power plant
900MW power is generated from this plant.
Coal is exported from these countries such as indonesia, south africa, and Russiya.
Coal is transported from the jetty to the coal yard and from there to the main plant by a belt system.
Water spray methods are used to maintain moisture in coal
The coal bundles coming from the coal yard are pulverized well by some machines, mixed with air and released into the boiler.
There, the thermal energy generated by the combustion is absorbed by the tubes in the boiler and turns into steam
The electricity produced by the generators connected to the turbines is transmitted to the power stations through an h2 plant.
The gas coming out of coal combustion is first removed by ESP and then the harmful sulfur dioxide in the gas is removed by a device called FGD
Explore the dynamic world of #PowerPlants with this comprehensive presentation. Delve into the various types of power plants, including fossil fuel, renewable energy, and nuclear. Gain insights into the processes that generate electricity to power our modern world. From turbines to transformers, understand the key components that make these plants efficient sources of energy. Discover the environmental considerations and technological advancements shaping the future of power generation.
MSEB was set up in 1960 to generate, transmit and distribute power to all consumers in
Maharashtra excluding Mumbai. MSEB was the largest SEB in the country. The generation
capacity of MSEB has grown from 760 MW in 1960-61 to 9771 MW in 2001-02. The customer
base has grown from 1,07,833 in 1960-61 to 1,40,09,089 in 2001-02.
C.S.T.P.S in contribution much in field of production of electricity. It is not only number
one thermal power station in Asia but also has occupied specific position on the international
map.
The first set was commission on August 1983 & was dedicated to nation by then PM
(late) Mrs. Indira Gandhi & second set commission on July 1984. The third & fourth units of
CSTPS under stage 2 were commissioned on the 3rd May 1985 & 8th March 1986 respectively.
The units 5 & 6 were commissioned on the 22nd March 1991 & 11th March 1992 respectively one
more units of 500MW was added to the CSTPS on making its generation to 2340 MW &
making “C.S.T.P.S.” as the giant in Power Generation of CSTPS.
This PPT contains introduction and types of thermal power plants, WORKING PRINCIPLE, LAYOUT AND WORKING OF NUCLEAR POWER PLANT, WORKING PRINCIPLE OF COAL BASED POWER PLANT, SITE SELECTION OF THERMAL POWER PLANT,GENERAL LAYOUT AND WORKING OF COAL BASED THERMAL POWER PLANT, PRESENT STATUS OF COAL-FIRED THERMAL POWER PLANT, WASTE GENERATED IN THERMAL POWER PLANTS AND MANAGEMENT , TREATMENT AND DISPOSAL OF WASTE GENERATED IN THERMAL POWER PLANTS.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Final project report on grocery store management system..pdfKamal Acharya
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Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...
ppt on nspcl rourkela odisha
1. Presented By :- Ankitesh
Roll No. :- 214501
Branch :- Electrical Engineering
College :- V.B.S.Purvanchal University, Jaunpur
Presentation On Summer Training
At
NSPCL (Rourkela)
2. CONTENTS
• INTRODUCTION
• LAYOUT OF THE PLANT
• SITE SELECTION OF THE PLANT
• SELECTION OF FUEL
• COAL HANDLING PLANT
• DEMINERALISATION PLANT
• COMPONENTS USED IN THE PLANT
• SWITCHYARD
• CONTROL ROOM
• REFERENCES
3. INTRODUCTION
• NSPCL (NTPC-SAIL Power Company Limited) is a joint venture .
• NTPC and SAIL joined in March 2001.
• CPP (consisting of 2*60 MW generators each) located at the Rourkela Steel Plant
and Durgapur Steel Plant.
• Bhilai 2*250MW generators.
• Rourkela Captive Power Plant
(i) NSPCL Rourkela is located in the premises of Rourkela Steel Plant.
(ii)The power plant is one of the coal based power plant of Rourkela.
5. LAYOUT OF THE PLANT
Fig.2 Schematic arrangement of Steam power plant
6. SITE SELECTION OF THE PLANT
• Transmission of energy.
• Cost of real estate and taxes.
• Transportation of fuel.
• Availability of water.
• Disposal of ash.
• Reliability of supply.
• Pollution and Noise.
7. SELECTION OF FUEL
• Selection of coal for power plants.
• Calorific value.
• Weather ability.
• Sulphur content.
• Grindability Index.
• Ash content.
• Particle size.
14. Boiler
• Boiler is an enclosed vessel in which water is heated
• Pulverized coal is put in boiler furnace.
• Circulated until the water is turned in to steam at the required pressure.
• Coal is burned inside the combustion chamber of boiler.
• This steam at high pressure and temperature is used directly
15. Water tube boilers
• In these boilers water is inside the tubes and hot gases are
outside the tubes.
• They consists of drums and tubes.
• Feed water enters the boiler to one drum .
• Greater efficiency.
• Large heating surfaces can be obtained by use of large
number of tubes.
• pressure as high as 125 kg/sq cm and temperatures from
315 to 575 centigrade.
Fig. 8.2 Water tube boilers
16. Inner diameter 1600mm
Thickness 100mm
Outside diameter 1800mm
Overall length 11500mm
Steam Capacity 12.6 cu.m
Number of boiler drums 02
Boiler drum height from the ground 52m
Orientation of water tubes Vertical
Table no.1: Boiler Drum Specifications
17. Air preheater
• The remaining heat of flue gases is utilised by air preheater.
• It is a device used in steam boilers to transfer heat
from the flue gases to the combustion air before
the air enters the furnace.
• kept at a place near by where the air enters in to
the boiler.
• As a consequence, the gases are also sent to the
chimney or stack at a lower temperature.
Fig.11 Air preheater
18. Economiser
• Recover some of the heat from the heat carried
away in the flue gases up the chimney and utilize
for heating the feed
• placed in the passage of flue gases in between the
exit from the boiler and the entry to the chimney.
• The use of economiser results in saving in coal
consumption,increase in steaming rate and high
boiler efficiency.
• needs extra investment and increase in maintenance
costs and floor area required . Fig.12 Economiser
19. Superheater
• A component of a steam-generating unit in which
steam,after it has left the boiler drum, is heated
above its saturation temperature.
• The amount of superheat added to the steam is
influenced by rating of the boiler.
• consist of one or more stages of tube arranged to
effectively transfer heat from the products of
combustion.
Fig.13 Superheater
20. Electrostatic precipitator
• It is a device which removes dust or other
finely divided particles from flue gases by
charging the particles inductively with an
electric field
• then attracting them to highly charged
collector plates
• 2 steps process
• Corona discharge area where ionization of the
gas occurs.
• The charged particles drift toward an
electrode of opposite sign and are deposited &
neutralize.
Fig.14 ESP
21. I D Fan & F D Fan
• IDF
(i) Placed at the outlet of boiler
(ii) Exhausts all gaseous combustion products or flue gas by
creating negative pressure
(iii)More susceptible to erosion and corrosion
• FDF
(i)Supply the air for combustion pushing the air through
combustion chamber to the furnace
(ii)Most efficient fans in power plants
(iii)These are centrifugal fans, uses variable pitch axial fans
22. Condenser
• Condenser refers here to the shell and tube heat exchanger, phase transition.
• water is in short supply an air-cooled condenser is often used.
• The purpose is to condense the also to get the condensed steam in the form of
pure water, otherwise known as condensate, back to steam generator or (boiler)
as boiler feed water.
• Condensers are classified as
(i) Jet condensers or contact condensers
(ii) Surface condensers.
• In jet condensers the steam to be condensed mixes with the cooling water and the
temperature of the condensate
• In surface condensers there is no direct contact between the steam to be
condensed and the circulating cooling water.
23. Cooling tower
• This hot water is passed to cooling towers.
• It is a tower- or building-like device in which atmospheric air (the heat
receiver) circulates with warmer water
• A cooling tower may serve as the heat sink in a conventional
thermodynamic process, such as refrigeration process .
• Two basic types of cooling towers are commonly used.
• One transfers the heat of warm water to cool air by evaporation.
• No evaporative cooling towers are classified as air-cooled condensers and
as air-cooled heat exchangers,
25. Impulse Turbine
Fig.18 Types of turbines
Have fixed nozzle that orients the flow into
high speed jets
High kinetic energy, results in shaft rotation
Drop in the pressure from inlet to outlet
increases the expansion rate of steam
Steam velocity increases
There is a loss of energy due to high exit
velocity which is called as carry over velocity
26. Alternator
Parameter Rating
Rated Power 81250 KVA
RPM 3000
Insulation Class F
Stator voltage 11500 V
Rotor voltage 186.6 V
Stator current 4879.1 A
Rotor current 1550 A
Power factor 0.8
Phase connection Y
Frequency 50 Hz
Cooling hydrogen Temp. 42. oC
Fig.19 An Alternator
27. ASH HANDLING PLANT
• fly ash about 80%
• 20% bottom ash
• Removal of Bottom-Ash: by spraying water and continuously.
• Removal of fly-Ash: Fly ash collected in each of the E.S.P hopper,
economizer hopper, air pre heater hopper and stack hopper.
• Disposal of Ash Slurry: 3 ash slurry pumps
30. Isolator
Operates under No Load Condition
Interlocked with Breakers and Earth Switches
Local as well as Remote Operation possible
Isolates Sections for Maintenance
Used to select Bus Bars
Fig.22 Isolator
31. CT
• To step-down the high magnitude of current to a safe value to
incorporate protection .
• Current Transformers are used for the instrumentation of power
systems.
Fig. 23 Current Transformer
32. Capacitor Voltage Transformer (CVT)
• CVT is used for supplying voltage signal to the measuring instruments
and protective relays.
• This is also used as coupling capacitor for PLCC.
• Primary voltage is applied to a series of capacitors group. The voltage across
one of the capacitor is taken to Aux PT. The secondary of the Aux PT is taken
for measurement and protection.
Fig. 24 CVT
33. Lighting Arrestor
• To discharge the high voltage surges in the power system due to
Lightning to the ground.
• Not in circuit in normal operation.
• Offers low resistance at abnormal voltages
• Fail to provide protection against travelling.
• It consists of a spark gap in series
with a nonlinear resistor
Fig. 25 Surge Arrester
34. Circuit Breaker
• Parts of a Circuit Breaker:-
• Fixed Contact
• Movable Contact
• Operating Mechanism and control circuit
• Arc quenching medium
• Types of circuit breakers
• Oil CB
• Air Blast CB
• Vacuum CB
• SF6 CB
Fig.26 Circuit Breaker
35. Bus bar
• Bus bars are copper or aluminium bars (generally of rectangular X
section) and operate at constant voltage.
• The most commonly used bus bar arrangements in substations are:
(i) Single bus bar arrangement.
(ii) Single bus bar system with sectionalisation.
(iii) Double bus bar arrangement.
Fig.27 Bus Bars