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Double bus bar is related to power control center (PCC). PCC is the main LT power distribution in any industrial establishment or large residential complex too. It basically an electrical panel with required number of incomer feeders and outgoing feeders. Power source like state power or captive power provide the incomers and outgoing feeders cater to the down stream power panels for further distribution( to MCC). Any PCC has one or more incomer and one or more outgoing feeder and bus isolators depending on the requirement. This PCC needs to have a bus bar to which the incomer gets connected and feeds the power to the bus and the outgoing feeders are connected to the bus bar to deliver the power down stream. This bus bar can be single bus bar system or double bus bar system. In a double bus bar system the two different power sources are connected to two different bus. Say one bus is for DG set power another bus is for SEB power. Both the buses can be charged simultaneously and can feed any outgoing feeders. The out going feeder have flexibility of getting the power either of the buses, but not simultaneously from both the buses. Double bus bar is more expensive compared to single bus bar system but more flexible, reliable.
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What is meant by 1.55 in busbar current calculation?
Busbar current rating for 1 square inch is 1000a.
What is difference between to busbar and feeder?
The busbar is used as a conductor and is used as a connection between the parallel and the feeder. The feeder is the supply, and it handles the relays.
What is the difference between busbar and busbar trunking system?
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What is mean by busbar in electrical engineering?
it is an infinite current carrying conductor which doesn't have voltage drop.
How can calculate cu bus-bar breaking capacity?
Earthing busbar size
Bus bar arrangements in sub station?
Burbars are the important elements in the electrical substation. Bus bars acts as nodal point in the substation which connects different incoming and outgoing circuits.Substations present in the power system performs various operations depends on the application such as stepping up the voltage, stepping down the voltage, high voltage transmission and switching stations to route the power to desired load center.Busbars in Substation:Busbars used in the substations are generally rectangular or circular cross section bars. These busbars can be either solid or hollow structures. Hollow circular cross section busbars are employes in EHV substations to reduce the corona effect.Switching Schemes:Switching schemes implies different methods employed to connect electrical circuits in the power system to transfer the electrical power in reliable manner. Switching schemes helps in deliver the electrical power to power system if any part of the system is faulty or under maintenance.Substations use different types of busbar arrangements or switching schemes depends upon the application, reliability of the supply and cost of installation. In every substations busbars plays a common role to connect different circuits. However switching is possible in the power system with the help of circuit breakers and isolators.Considerations for selection of busbar arrangement:Different types of busbar arrangements are employed based on the voltage, reliability of the supply, flexibility in transmitting power and cost. The other aspects considering in designing the busbars arrangements are:Simplicity in the designMaintenance of different elements without interruption in the power supplyFuture expansion feasibilityEconomical in cost of installation and operationDifferent busbar arrangements:Some of the switching schemes are busbar arrangements employed in the substations are listed below:Single Bus-bar arrangementDouble Main Bus-bar schemeMain and Transfer bus-bar schemeOne and half breaker schemeRing Main arrangement schemeSingle Bus-bar scheme:This is the simplest busbar scheme available which consists of single set of busbars connected to the generators, transformers and load feeders. All the feeders are connected by circuit breaker and set of isolators. This arrangement helps to remove the connecting elements (Generators, transformers, etc ) for maintenance by opening the circuit breaker contacts and further opening the isolators.Advantages:This busbar arrangement enjoys less cost of installationLess maintenancesimple operationDisadvantages:Fault on the busbar all the feeders connected to the busbars should be disconnectedwhen Busbar is under maintenance total supply and all feeders should be disconnectedLeast flexibility and reliabilitySee all 5 photosSingle busbar SchemeDouble Main Busbar Scheme:Normally in double main busbar scheme each circuit is connected to both the buses. In some cases half of the circuits can be connected and operated on each bus, in these cases bus or circuit breaker failure would cause loss to half of the circuits. In double main busbar arrangement one or two breakers can be provided for each circuit. Double main busbar and double breaker scheme provides high reliability in the case of fault or outage of one of the breaker.Advantages:Any circuit can be taken out of circuit for maintenanceFlexibility in connecting the feeder circuit to either of the busbarsDisadvantages:Most expensiveLoose circuits connected to busbar when fault occurs on the busbarDouble Busbar Single Breaker SchemeMain and Transfer Busbar SchemeMain and Transfer busbar scheme is similiar to single busbar arrangement with additional transfer bus connected. Tie circuit breaker is provided to tie both the main and transfer bus. During normal operation all the circuits are connected to the main bus. When circuit breaker connected to the circuit (transmission line) is required to trip for maintenance, tie circuit breaker connecting the main and transfer bus is closed. The relay protection for the circuits connected to the transfer bus is taken care by the tie circuit breaker.Advantages:Low initial costAny breaker can be taken of circuit for maintenanceDisadvantages:Requires one extra breaker for bus tieSwitching is somewhat complicated when breaker is under maintenanceMain and Transfer Busbar SchemeOne and Half breaker Busbar scheme:In One and half breaker scheme, two circuits are connected between the three circuit breakers. Hence One and Half breaker name was coined for this type of arrangement. Under normal operating conditions all the breakers are closed and both the busbars are energized. Any Circuit fault will trip two circuit breakers and no other circuit will be affected in this arrangement. When a busbar fault occur only breakers adjacent to busbars trips and no circuit will loose power. Two busbars can also be taken out of service with out affecting the power flow if the power source circuit ( alternator circuit) and receiving circuit (transmission line) available in the same bay.Advantages:Most flexible operation possibleHigh reliabilityBus failure will not remove any circuit from serviceDisadvantages:High costRelaying is somewhat complicated since the middle breaker must responsible for both the circuits on either direction and should operateone and Half Breaker SchemeRing busbar schemeIn this ring main busbar scheme arrangement, breakers are connected in ring and circuits are connected between the breakers. There will be same number of circuits as the number of breakers in the arrangement. During normal operation all the breakers are closed. During circuit fault two breakers connecting the circuit trips. During breaker maintenance the ring is broken but all the lines remain in service.Advantages:Low costFlexible operation for breaker maintenanceAny breaker can be taken out of service without interrupting loadPower can be fed from both the directionDisadvantages:Fault occur during maintenance will break the ringRelaying is complexBreaker failure during fault will trip one additional circuitRing Main Busbar Scheme
What is the torque for a 800Amps electrical busbar?
65 N/m is sufficient for 800A Busbar.
What is meant by 1.55 in busbar current calculation?
Busbar current rating for 1 square inch is 1000a.
What a bus bar?
The term, 'bus', in 'busbar', comes from the word, 'omnibus', meaning 'to serve all'. A busbar, then, is a copper bar that connects several independent circuits together. For example, a generator might be connected to a busbar, serving several circuits all connected to that same busbar. There are separate busbars for line, neutral, and earthing (grounding) connections.
What is difference between to busbar and feeder?
The busbar is used as a conductor and is used as a connection between the parallel and the feeder. The feeder is the supply, and it handles the relays.
What is the difference between busbar and busbar trunking system?
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What is mean by busbar in electrical engineering?
it is an infinite current carrying conductor which doesn't have voltage drop.
Does geometric isomers have variations in arrangement around a double bond?
Yes.
What is bus bar and how it is connected to the genarator?
The term, 'bus', is derived from the word, 'omnibus', meaning to 'serve all', and that's exactly what a busbar does.A busbar is a length of conductor which offers a common point of connection for several circuits. For three-phase systems, one busbar is required for each of the three lines and (where necessary) for any neutral. A separate busbar is used to interconnect the various earth (ground) connections.In the case of a power station, one or more generators can be connected to the same busbar system, as are the various transformers supplying the circuits leaving the power station. Normally, each input/output circuit is connected to the busbar system, not directly, but through circuit breakers and isolators.
What is the maximum insulation resistance reading on a 800A busbar?
infinite
What is an arrangement in which substituted groups are on the same side of a double bond?
troll face
The strict arrangement of base-pairings in the double helix results in 2 strands of nucleotides that are?
complementary
