-
1 периодическая нагрузка, изменяющаяся по синусоидальному закону
Construction: sinusoidal loadsУниверсальный русско-английский словарь > периодическая нагрузка, изменяющаяся по синусоидальному закону
-
2 синусоидальная нагрузка
1) Construction: sinusoidal loads2) Makarov: sine loadУниверсальный русско-английский словарь > синусоидальная нагрузка
-
3 код классификации источников бесперебойного питания
код классификации ИБП
-EN
UPS classification code
IEC 62040-3 Standard classifies UPS performance by 8-digit code:-
The first three digits classify output dependency of input mains in normal operation:
- VFI – Voltage and Frequency Independent
- VI – Voltage Independent
- VFD – Voltage and FrequencyDependant
-
The next two digits refer to output waveform:
- S – Sinusoidal for linear and non-linear loads (THDV<8%)
- X – Non sinusoidal with non-linear loads
- Y- Non-sinusoidal.
- The last three digits refer to output dynamic performance (including transients during transfer switch operation).
[ http://www.upsonnet.com/UPS-Glossary/]
Тематики
EN
Русско-английский словарь нормативно-технической терминологии > код классификации источников бесперебойного питания
-
The first three digits classify output dependency of input mains in normal operation:
-
4 коэффициент мощности, не учитывающий высшие гармоники
- DPF
- displacement power factor
- displacement PF
- displacement P.F.
коэффициент мощности, не учитывающий высшие гармоники
-
[Интент]EN
displacement power factor
DPF
The displacement power factor is the power factor due to the phase shift between voltage and current at the fundamental line frequency. For sinusoidal (non-distorted) currents, the displacement power factor is the same as the apparent power factor.
[ http://www.ccontrolsys.com/w/Power_Factor]
displacement power factor
The ratio of real to apparent power for an inductive or capacitive linear load. (Displacement Power Factor= kilowatts60 Hz / kilovoltamps60 Hz, or FP (displacement) = kW60Hz / kVA60 Hz). For an inductive load the current lags the voltage and the power factor is called “lagging.” For a capacitive load the current leads the voltage and the power factor is called leading. In all cases if the current and voltage are in phase, the displacement power factor is unity (1). Displacement power factor ranges from unity to zero. The value of displacement power factor is also given by the cosine of the angle by which the current lags or leads the voltage. (see: Leading; Lagging; Linear Load; Power Factor.)
[ http://harmonicslimited.com/glossary/term/40]
displacement power factor
Displacement factor is equal to the power factor for linear loads with sinusoidal voltages and currents.
pf = cos (angle1 - angle2)
[ http://wiki.answers.com/Q/What_is_displacement_factor]Тематики
EN
- displacement P.F.
- displacement PF
- displacement power factor
- DPF
Русско-английский словарь нормативно-технической терминологии > коэффициент мощности, не учитывающий высшие гармоники
-
5 источник бесперебойного питания класса VFI
источник бесперебойного питания класса VFI
ИПБ класса VFI
Согласно МЭК 62040-3 в ИБП класса VFI (Voltage Frequence Independent) выходное напряжение не зависит от частоты и напряжения сети. Такие ИБП защищают нагрузку от всех десяти нарушений в питающей сети, перечисленных в МЭК 62040-3.
[ http://www.ups-info.ru/index.php?link=160595 с изменениями]EN
VFI Class UPS
A system where the output voltage is Independent from input Voltage and Frequency (IEC 62040-3). VFI class generally refers to Double Conversion ON-Line types. These systems generally solve all 10 Power Line Disturbances. The Output is generally sinusoidal for linear and non-linear loads, with class 1 (No break) dynamic performance.
[ http://www.upsonnet.com/UPS-Glossary/]Тематики
Синонимы
EN
Русско-английский словарь нормативно-технической терминологии > источник бесперебойного питания класса VFI
См. также в других словарях:
Power factor — For other uses, see Power factor (pistol). The power factor of an AC electric power system is defined as the ratio of the real power flowing to the load over the apparent power in the circuit,[1][2] and is a dimensionless number between 0 and 1… … Wikipedia
Current clamp — For current clamp recording in neurons, see Electrophysiology#Current clamp. In electrical and electronic engineering, a current clamp or current probe is an electrical device having two jaws which open to allow clamping around an electrical… … Wikipedia
electric motor — motor (def. 4). [1885 90] * * * Introduction any of a class of devices that convert electrical energy to mechanical energy, usually by employing electromagnetic phenomena. Most electric motors develop their mechanical torque by the… … Universalium
Uninterruptible power supply — A small free standing UPS … Wikipedia
Power supply — For the Budgie album, see Power Supply (album). A vacuum tube rackmount adjustable power supply, capable of +/ 1500 volts DC, 0 to 100mA output, with amperage limiting capability. A power supply is a device that supplies electrical energy … Wikipedia
AC power — This article deals with power in AC systems. See Mains electricity for information on utility supplied AC power. Usually hidden from the unaided eye, the blinking of (non incandescent) lighting powered by AC mains is revealed in this motion… … Wikipedia
Three-phase electric power — This article deals with where, how and why three phase is used. For information on the basic mathematics and principles of three phase, see three phase. Three phase electric power is a common method of alternating current electric power… … Wikipedia
код классификации источников бесперебойного питания — код классификации ИБП EN UPS classification code IEC 62040 3 Standard classifies UPS performance by 8 digit code: The first three digits classify output dependency of input mains in normal operation: VFI – Voltage and Frequency Independent… … Справочник технического переводчика
Transformer — This article is about the electrical device. For the toy line franchise, see Transformers. For other uses, see Transformer (disambiguation). Pole mounted distribution transformer with center tapped secondary winding. This type of transformer is… … Wikipedia
Inverter (electrical) — An inverter is an electrical device that converts direct current (DC) to alternating current (AC)[1]; the converted AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits. Solid… … Wikipedia
Impedance matching — In electronics, impedance matching is the practice of designing the input impedance of an electrical load (or the output impedance of its corresponding signal source) to maximize the power transfer and/or minimize reflections from the load.… … Wikipedia