Affordable physics homework help
Affordable physics homework help
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.
Sociology Homework help
Write 13 pages with APA style on Identification and Constitutive Rhetoric in President Obamas 2009 Inaugural Speech.
The financial crisis, which began in the country, affected many nations spread across the world. As a consequence of the financial crisis, many Americans were jobless or lost their jobs, the healthcare sector was in trouble even as more and more people needed medical cover as protection against rising medical costs (President Barack Obamas Inaugural Addresspar 4-5). Being his first address as the president of the greatest nation on earth, President Obama sought to achieve several goals through his speech. One of the main purposes of the speech was to reassure Americans and give them hope in spite of the prevailing social-political situation that the country was facing. The speech was also an address to the entire world. allies and potential allies, hostile nations and groups, the Muslim community, and poor nations.
Only years earlier, the United States of America had engaged in war with Iraq and Afghanistan. The war between the U.S. and the two countries was based on the premise that the administrations of the two countries were promoting international terrorism by hosting leaders of international terrorist groups or financing their activities. Apart from the issue of terrorism, the U.S. engaged the two countries for oppressing their people and violating their civil rights. Because of the stance that the Bush administration had taken with respect to the two countries, different quarters criticized the U.S. government of terrorizing and bossing other countries. The country was thus facing a lot of criticism from different players in the international arena and its relations with many countries, especially those in the Middle East were strained.
President Obama faced a number of constraints even as he made his inaugural speech. For one, his audience was quite diverse. Appreciating the diversity of that characterized the American nation, Obama stated that “We are a nation of Christians and Muslims, Jews and Hindus – and non-believers
