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1 PFC types
виды коррекции коэффициента мощности
-There are 2 types of power factor correction: fixed or automatic.
Fixed power factor correction consists of inserting, in parallel on the network, a capacitor bank whose total power is provided by the assembly of capacitors of identical or different ratings. The bank is energized by a contactor that simultaneously supplies all the capacitors (a single step).
The inrush current peak, in the case of fixed correction, can reach 30 times the nominal current of the capacitor bank.
An automatic power factor correction system, on the other hand, consists of several capacitor banks of identical or different ratings (several steps), energized separately according to the value of the power factor to be corrected.
An electronic device automatically determines the power of the steps to be energized and activates the relevant contactors.
The inrush current peak, in the case of automatic correction, depends on the power of the steps already on duty, and can reach 100 times the nominal current of the step to be energized.
[ABB]
PFC Types
There are two types of Power Factor Correction - Passive PFC and Active PFC.
Passive PFC uses passive elements like a ferrite core inductor on the AC input. It is very easy to implement in existing power circuits although the power factor is low at 60-80%. The proper AC input voltage (115V or 230V) must also be chosen manually. In addition, significant EMI can still result with a 115V AC source. Of course, a 230V AC source will not have this problem!.
Active PFC, on the other hand, uses a switching regulator with active elements like an IC, FETs (Field Effect Transistors) and diodes to create an active PFC circuit. This circuit allows the power supply to achieve a power factor of up to 95%, significantly reduce harmonics and automatically adjusts the AC input voltage. This means you do not have to manually select the AC input voltage. It works with all voltages from 110V to 240V.
[ http://www.techarp.com/showarticle.aspx?artno=81&pgno=1]
Тематики
EN
Англо-русский словарь нормативно-технической терминологии > PFC types
-
2 types of power factor correction
виды коррекции коэффициента мощности
-There are 2 types of power factor correction: fixed or automatic.
Fixed power factor correction consists of inserting, in parallel on the network, a capacitor bank whose total power is provided by the assembly of capacitors of identical or different ratings. The bank is energized by a contactor that simultaneously supplies all the capacitors (a single step).
The inrush current peak, in the case of fixed correction, can reach 30 times the nominal current of the capacitor bank.
An automatic power factor correction system, on the other hand, consists of several capacitor banks of identical or different ratings (several steps), energized separately according to the value of the power factor to be corrected.
An electronic device automatically determines the power of the steps to be energized and activates the relevant contactors.
The inrush current peak, in the case of automatic correction, depends on the power of the steps already on duty, and can reach 100 times the nominal current of the step to be energized.
[ABB]
PFC Types
There are two types of Power Factor Correction - Passive PFC and Active PFC.
Passive PFC uses passive elements like a ferrite core inductor on the AC input. It is very easy to implement in existing power circuits although the power factor is low at 60-80%. The proper AC input voltage (115V or 230V) must also be chosen manually. In addition, significant EMI can still result with a 115V AC source. Of course, a 230V AC source will not have this problem!.
Active PFC, on the other hand, uses a switching regulator with active elements like an IC, FETs (Field Effect Transistors) and diodes to create an active PFC circuit. This circuit allows the power supply to achieve a power factor of up to 95%, significantly reduce harmonics and automatically adjusts the AC input voltage. This means you do not have to manually select the AC input voltage. It works with all voltages from 110V to 240V.
[ http://www.techarp.com/showarticle.aspx?artno=81&pgno=1]
Тематики
EN
Англо-русский словарь нормативно-технической терминологии > types of power factor correction
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3 finance
1. сущ.1) фин. финансирование (обеспечение денежными средствами какой-л. деятельности, проекта, организации и т. д.)The type and amount of finance required for a business depends on many factors: type of business, success of firm and state of the economy.
This form of financing is usually used for start-up businesses to limit the amount of finance initially needed.
to receive 25 per cent of the projected finance from the government — получить 25% от запланированного финансирования от правительства
to receive additional finance from the district council — получить дополнительное финансирование от районного совета
Farmers will receive additional finance from EU funds.
to receive cheap [low-cost\] finance from smb. — получить дешевое финансирование от кого-л.
to receive bonded [mortgage\] finance from the banks — получить под залог [ипотечное\] финансирование от банков
to raise finance for smth — найти финансирование для чего-л.
The company helps clients ascertain the most cost effective route for raising finance for buying property in Spain and other European countries.
to provide finance against smth — предоставлять финансирование под залог чего-л.
With invoice discounting, the invoice financier (known as an invoice discounter) will provide finance against the sales invoices only.
The Football authorities have provided the bulk of the finance for the stadium.
The bulk of the finance for the project will come from private sources (such as bank finance or retained earnings).
to raise finance of £1m — найти финансирование в размере 1 млн ф. ст.
They raise finance of £25k-£1m from their network of suitable banks.
long-term [short-term\] finance — долгосрочное [краткосрочное\] финансирование
to provide long-term finance for the smaller business — предоставлять долгосрочное финансирование для малого бизнеса
This probably carries the lowest level of risk to the company of all the alternative sources of long-term finance.
Syn:See:capital finance, development finance, equity finance, export finance, government finance, haircut finance, loan finance, project finance, student finance, refinance, sales finance company, finance bill, international finance subsidiary, premium finance agreement, Association of African Development Finance Institutions, Finance Corporation for Industry, Finance for Industry, Industrial and Commercial Finance Corporation, War Finance Division2)а) эк. финансы (совокупность или состояние финансовых ресурсов какого-л. лица)A company can prosper only when the finance of the company is properly maintained. — Компания может процветать только в том случае, если ее финансы должным образом управляются.
This allows me to manage my finance effectively.
My finance is hopeless, mainly owing to the European complications.
I can now look after my children and my finance is better.
б) фин., упр. финансы, управление финансами, финансовое дело редк. (область деятельности и учебная дисциплина, связанные с привлечением и вложением денежных средств какого-л. лица: компании, человека, государства и т. д.)This book is for managers who want to study finance and accounting further.
to work in ( corporate) finance — работать в области (корпоративных) финансов
People who work in corporate finance and accounting are responsible for managing the money-forecasting where it will come from, knowing where it is, and helping managers decide how to spend it in ways that will ensure the greatest return.
See:corporate finance, personal finance, public finance, finance company, finance manager, finance and accounts department, NASDAQ Other Finance Index, Institute for International Finance, International Institute of Public Finance2. гл.фин. финансировать (изыскивать или направлять средства на поддержание деятельности предприятия, оплату расходов по проекту, покупку чего-л. и т. д.; выделять средства на что-л. или кому-л.; вкладывать средства во что-л.)to finance a project [programme\] — финансировать проект [программу\]
to finance by borrowing — финансировать путем заимствования, финансировать с помощью займов
See:
* * *
финансы, финансирование: 1) термин для обозначения сферы финансово-кредитных отношений - аккумулирование финансовых ресурсов (банковский и фирменный кредиты, покупка в рассрочку, выпуск ценных бумаг), совокупность финансовых отношений государства, компаний и др.; см. corporate finance; 2) денежные суммы, кредиты.* * *. Дисциплина, связанная с определением стоимости и принятием решений. Финансовые функции включают в себя распределение ресурсов, в том числе приобретение, инвестирование и управление ресурсами . финансовый департамент; финансы, финансовая деятельность Инвестиционная деятельность .* * *-----Финансы/Кредит/Валюта1. финансовое дело, финансысовокупность всех денежных средств, находящихся в распоряжении предприятия, объединения, фирмы, государства, а также система их финансирования, распределения и использованияФинансы/Кредит/Валюта2. доходы, средства
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