FRL: Filter regulator and lubricatorensures the supply of air to the equipment
dimanche 12 juin 2016
samedi 11 juin 2016
lundi 6 juin 2016
Electrical pipes
LESLES PIPES DIFFERENT TYPES OF ELECTRICAL
Definition dune electrical conduit Conductors and cables in conduit name of a duct The usual conduits rule to be applied in a conduit The plastic moldings and wooden Plinth buried pipelines pipes Aerial The Busway Exit slideshow
in a conduit providing protection against external influences. buried on a path of prefabricated overhead cables Definition Definition dune dune electrical conduit electrical conduit Electrical pipe consists of a set of conductors or cables:
Conductors or cables conductors or cables A mechanical resistance (shock, crushing) Sealing (to water, dust) Non flame retardant A pipe must have the following characteristics: The choice of a conduit seffectue according to external influences local.
samedi 21 mai 2016
the contactor (contacteur)
the contactor
The switch is a mechanical switching device having one rest position and one working position.Its function:
IT is capable of making, carrying and breaking currents in normal circuit conditions, including conditions of overload in service.
The interest of the contactor is to be remotely controlled.
Raccordement d’un automate programmable
Raccordement d’un automate programmable
Introduction
Introduction
Les automatismes sont réalisés en
vue d’apporter des solutions à des problèmes de nature technique, économique ou
humaine.
Eliminer les tâches dangereuses et
pénibles, en faisant exécuter par la machine les tâches humaines complexes ou
indésirables.
Améliorer la productivité en
asservissant la machine à des critères de production, de rendement ou de
qualité.
Piloter une production variable, en
facilitant le passage d’une production à une autre.
wiring techniques (cablage)!
wiring techniques
The assembly of industrial cables must meet particularly high requirements. The FastConnect cabling system from Siemens perfectly meets all these requirements: Bundling the cables on the ground - simple, fast and reliable.
FastConnect - the complete system
For carrying or rapid changes and errors without wiring on site, Siemens has developed a sophisticated system for quick installation consisting of cables, connectors and connectorization tools. FastConnect is available for Industrial Ethernet / PROFINET and PROFIBUS, for RJ45, M12 or D-Sub / RS-485. And now for fiber also: BFOC, SC, LC and SC RJ for different lengths. FastConnect FO makes the impossible possible!
priming of the thyristor! (amorçage des thyristor)
priming by resistance
The simplest method is to include a resistor between the trigger and the power source. If this source is an alternative, which is the most interesting case, we will add in series with the resistance a diode to avoid applying the trigger significant negative voltage during the negative half cycle. This diode must obviously have a higher breakdown voltage to the peak voltage of the power source. The resistance value used to set boot time, but since the voltage applied to the trigger via this resistance is in phase with the anode voltage we will use the first part of the alternation is between 0 and 90 ° as shown in the figure below.
The simplest method is to include a resistor between the trigger and the power source. If this source is an alternative, which is the most interesting case, we will add in series with the resistance a diode to avoid applying the trigger significant negative voltage during the negative half cycle. This diode must obviously have a higher breakdown voltage to the peak voltage of the power source. The resistance value used to set boot time, but since the voltage applied to the trigger via this resistance is in phase with the anode voltage we will use the first part of the alternation is between 0 and 90 ° as shown in the figure below.cooling type
Oil as coolant
In most transformers, a dielectric fluid (mineral oil, synthetic, ...) is used in the cooling circuit for dissipating heat from the magnetic circuit and windings.
The oil is moving in a transformer in operation, by a convection natural or forced * (using pumps or fans). It is cooled by ambient air through radiators or cooling towers in which fans force air circulation.
* Convection: it is for example the warm air rising and the hottest water that goes to the surface
Cooling is characterized on transformers by the following letters:
the type of fluid: A = Air, OR = Oil, and Water =
the type of traffic: N = Natural, Forced F = D = Headed
Technological globalization
Technological globalization
For international democratic control of technical systems.
Economic globalization is unthinkable without a technological globalization of communications. The latter increasingly valued, can be dangerous.
In the current discussion on globalization, it is mostly seen as economic globalization. We think the world market where the importance of local political, regional and even national is increasingly reduced in favor of transnational financial powers. But this economic globalization is unthinkable without a technological globalization.
Les techniques modernes (modern techniques)
Le développement du processus d'éducation à la lumière des technologies modernes!
Beaucoup de gens regardent l'éducation comme un processus de continu reste inhérent à la vie des gens investissent leurs périodes toute opportunité de voir les nouvelles discussions, ou de chercher à maîtriser les sujets que vous avez déjà appris auparavant.
Notre monde a commencé aujourd'hui assiste à l'émergence d'un grand nombre de moyens pertinents Absorber le sujet et de la manière la compréhension est attrayante et efficace indépendamment de l'âge, si l'apprenant étudiant les adultes de l'école ou instruits, mais il faut les apprenants adultes afin de déterminer les moyens appropriés pour eux de pré-sélectionner une connaissance qui se spécialisent son champ . Ce que beaucoup de gens préfèrent encore l'étude traditionnelle, qui sont à l'intérieur de la maison leur donne un contrôle complet de leurs propres parcours d'apprentissage, ainsi que beaucoup d'autres responsabilités telles que le travail et la famille. Cependant, une telle approche prend le caractère unilatéral de la connaissance de son absence d'une interaction directe avec l'enseignant ou professeur ou professeur.