Siemens
СРЕДСТВА ПРОМЫШЛЕННОЙ АВТОМАТИЗАЦИИ
официальный партнер Сименс
Каталог СА01 2017
архивный
(4872) 700-366
skenergo@mail.ru

Power supplies general
Power supplies

In plant building or mechanical equipment manufacture, or in any other situations in which electrical controls are used, a safe and reliable power supply is needed to supply the process with power.

The operational reliability of electronic controls and associated reliable operation of automated plants is extremely closely linked to the resistance of the load current supply to failure. Final control elements as well as input and output modules will only respond to command signals if the power supply is operating reliably.

In addition to requirements such as safety, particular demands are placed on the electromagnetic compatibility (EMC) of the power supply with reference to the tolerance range of the output voltage, as well as its ripple.

Important factors that determine problem-free implementation are, in particular:

  • An input current with a low harmonic content
  • Low emitted interference
  • Adequate immunity (noise immunity) to interference

 

EMC

Interference phenomena

Emission (emitted interference)

Interference caused by television and radio reception

Interference coupling on data lines or power supply cables

Noise immunity (immunity to interference)

Faults on the power cable due to switching non-resistive loads such as motors or contactors

Static discharge due to lightning strikes

Electrostatic discharge through the human body

Conducted interference induced by radio frequencies



Selected interference phenomena

General notes on DC power supplies

The DC power supply is a static device with one or more inputs and one or more outputs that converts a system of AC voltage and AC current and/or DC voltage and DC current to a system with different DC voltage and DC current values by means of electromagnetic induction for the purpose of transmitting electrical energy.

The type of construction of a DC power supply is primarily decided by its intended use.

















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Арматура DENDOR

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Датчики и измерители

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Регуляторы и регистраторы

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Пневматическое оборудование

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Краны и Клапаны

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Измерительные приборы

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Системы беспроводного управления «умный дом»

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Бесконтактные выключатели Конечные выключатели Оптические датчики Энкодеры

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SKW-FS - Установка умягчения

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SKW-FK - Установка обезжелезивания

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