What is Crabtree Starbreaker?
The Starbreaker domestic consumer unit range introduces an innovative modular concept to the market. By employing a unique busbar system a balance is achieved between the conventional ‘factory built’ approach and the time consuming on-site assembly of many individual components.
What is a substation bus bar?
In electric power distribution, a busbar (also bus bar) is a metallic strip or bar, typically housed inside switchgear, panel boards, and busway enclosures for local high current power distribution.
What does a substation bus do?
A substation bus scheme is the arrangement of overhead bus bar and associated switching equipment (circuit breakers and isolators) in a substation. The first requirement of any substation design is to avoid a total shutdown of the substation for the purpose of maintenance, or due to fault somewhere out on the line.
How do I know my MCB rating?
On a resistive load (say heater, normal lighting load) it will B Curve, for inductive load (Like pump, Motors etc.) it will be C curve and for highly inductive or capacitive load it will be D curve. The numeral part indicates rating of MCB in Ampere. In the given example it is 20A.
How many bus bars are there in the single bus bar system?
In this arrangement, the main bus bar is sectionalized into two bus bars in which one of them is duplicate bus bars and the other is the main bus bar. These two bus bars separated by bus coupler arrangement. Since only one circuit breaker is used for one circuit, the cost of a system decreases comparatively.
What are the different bus bar arrangement possible in a substation discuss them briefly with application areas?
Single Bus-Bar Arrangement
- Single Bus Bar.
- Single Bus Bar with Bus Sectionalized.
- Main and Transfer Type.
- Double Bus Bar Double Breaker.
- Sectionalized Type Arrangement.
- One and Half Breaker.
- Ring Arrangement.
- Mesh Arrangement.
What does breaker and a half mean?
The breaker-and-a-half configuration, typically used at extra-high-voltage (EHV) stations, consists of two buses, each normally energized. The breaker-and-a-half configuration provides for circuit breaker maintenance, since any breaker can be removed from service and isolated without interrupting any circuit.
How many types of busbar are there?
Such type of arrangement uses two type of busbar namely, main busbar and the auxiliary bus bar. The busbar arrangement uses bus coupler which connects the isolating switches and circuit breaker to the busbar. The bus coupler is also used for transferring the load from one bus to another in case of overloading.
Can a starbreaker be used as a consumer unit?
Starbreaker consumer units are available as factory built units or for on site assembly in component form. If your Starbreaker unit is factory built (incoming devices and busbar fitted) please see sections 1-2 & 7-12. If your Starbreaker unit is not factory built please see information in all sections. 2. Enclosure Mounting
What is a bus bar and what does it do?
What is a busbar? Busbars distribute electricity with greater ease and flexibility than some other more permanent forms of installation and distribution. Sometimes spelled bus bar or buss bar, they are often metallic strips of copper, brass, or aluminum that both ground and conduct electricity.
What are the amperages for a busbar trunking system?
For applications in which higher ampacity is required, high power busbar trunking systems can provide up to 6300 amps. Common high power busbar amperages include: 630, 800, 1000, 1250, 1600, 2000, 2500, 3200, 4000, 5000, and 6300 amps
What is the Starbreaker domestic circuit protection range?
The Starbreaker domestic circuit protection range introduces an innovative modular concept to the market. Integral to this is it’s range of RCBOs.