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Compose a 2750 words assignment on the distribution board provided. Needs to be plagiarism free!
Compose a 2750 words assignment on the distribution board provided. Needs to be plagiarism free!  .
A distribution board is defined as “a component of an electricity supply system which divides an electrical power feed into subsidiary circuits, while providing a protective fuse or circuit breaker for each circuit, in a common enclosure.”
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DEFINITION OF EQUIPMENT AND PARTS.
Feeder: . conductors that connect the power supply source and a final branch circuit over-current device.
N/C and N/O: these are the normally closed and normally open contacts respectively.
Normally closed (N/C) contact is one which is in conducting state when it or the device operating it is in a de-energized condition.
Normally open (N/O) contact is always non-conducting when it or the device operating. it is in a de-energized state. These two connect or disconnect the line from the load.
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Metering circuit breaker:
The American National Standards Institute (ANSI) defines a circuit breaker as: “A mechanical switching device, capable of making, carrying and breaking currents under normal circuit conditions. Also capable of making and carrying for a specified time and breaking currents under specified abnormal circuit conditions, such as those of a short circuit.”
The metering circuit breaker here protects the meter circuit from faults that could cause adverse effects on them. It operates by switching itself off in case of a spot. When the fault is rectified, it is switched on.
Remote emergency trip push button:
It is a switch usually located at a safer location and in this case, is used to shut down the power to the metering on emergency.
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22kV/110V VT'S – Metering Voltage Transformer:
It is a transformer used to monitor the power line voltage. This steps down line power from 22kV to 110V that can be applied to the measuring instruments without damaging them.
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400/5A, 100/5A CT'S - Metering Current Transformer:
It is a transformer used to monitor the power line current. It isolates the meters from the broad wind of the line and provides a reduced current that can be consumed by the measuring instrument.
The 400/5A reduces current from 400 amperes to 5 amperes suitable for metering instruments.
 .Likewise, 100A/5A steps down current from 100A to 5A to be used in metering.
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TX2 1000kVA 10,000/400V Transformer:
A step-down Delta/Wye transformer that converts 10kV to 400V for low voltage consumption. It has a rating of 1000kVA. The delta/wye configuration is the most commonly used in 3-phase transformers because the wye on the secondary side gives a fourth conductor, the neutral, which is useful in LV distribution. It facilitates the use of single-phase power from a 3-phase LV line.
Main Incomer:
Found on the main distribution board and it acts like a switch which is responsible for switching the phases and neutrals for the whole power supply.
6 Stage 200kVAr PFC Unit with Auto Control:
This is a power factor correction (PFC) unit with a 200kVAr rating. The control parameter is VAR and not PF (power factor). Target PF value is just used to calculate the capacitive VAR required to be added/removed to achieve the desired.
