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1 категория применения (контакторов и пускателей)
категория применения (контакторов и пускателей)
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[Интент]Параллельные тексты EN-RU
Род тока/
Kind of currentКатегория применения/
Utilization categoryТипичные области применения/
Typical applicationsПеременный/
Alternating currentAC-1
Неиндуктивные или слабоиндуктивные нагрузки, печи сопротивления/
Non-inductive or slightly inductive loads, resistance furnacesAC-2
Двигатели с контактными кольцами: пуск, отключение/
Slip-ring motors: starting, switching offAC-3
Двигатели с короткозамкнутым ротором: пуск, отключение без предварительного останова/
Squirrel-cage motors: starting, switching off motors during runningAC-4
Двигатели с короткозамкнутым ротором: пуск, торможение противотоком, повторно-кратковременные включения/
Squirrel-cage motors: starting, plugging, inchingAC-5a
Коммутация разрядных электроламп/
Switching of electric discharge lamp controlsAC-5b
Коммутация ламп накаливания/
Switching of incadescent lampsAC-6a
Коммутация трансформаторов/
Switching of transformersAC-6b
Коммутация батарей конденсаторов/
Switching of capacitor banksAC-7a
Слабоиндуктивные нагрузки бытового и аналогичного назначения/
Slightly inductive loads in household appliances and similar applicationsAC-7b
Двигательные нагрузки бытового назначения/
Motor-loads for household applicationsAC-8a
Управление герметичными двигателями компрессоров холодильных машин с ручным взводом тепловых расцепителей/
Hermetic refrigerant compressor motor control with manual resetting of overload releasesAC-8b
Управление герметичными двигателями компрессоров холодильных машин с автоматическим взводом тепловых расцепителей/
Hermetic refrigerant compressor motor control with automatic resetting of overload releasesПостоянный/
Direct currentDC-1
Неиндуктивные или слабоиндуктивные нагрузки, печи сопротивления/
Non-inductive or slightly inductive loads, resistance furnacesDC-3
Шунтовые двигатели: пуск, торможение противотоком, повторно-кратковременные включения/
Shunt motors: starting, plugging, inchingDC-3
Динамическое отключение двигателей постоянного тока/
Dynamic breaking of d.c. motorsDC-5
Сериесные двигатели: пуск, торможение противотоком, повторно-кратковременные включения/
Series-motors: starting, plugging, inchingDC-5
Динамическое отключение двигателей постоянного тока/
Dynamic breaking of d.c. motorsDC-6
Коммутация ламп накаливания/
Switching of incandescent lampsНедопустимые, нерекомендуемые
Примечание(1)- Мнение автора карточкиТематики
EN
Русско-английский словарь нормативно-технической терминологии > категория применения (контакторов и пускателей)
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2 виды коррекции коэффициента мощности
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
Русско-английский словарь нормативно-технической терминологии > виды коррекции коэффициента мощности
См. также в других словарях:
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категория применения (контакторов и пускателей) — [Интент] Параллельные тексты EN RU Род тока/ Kind of current Категория применения/ Utilization category Типичные области применения/ Typical applications Переменный/ Alternating current AC 1 Неиндуктивные или слабоиндуктивные нагрузки, печи… … Справочник технического переводчика
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