French translation: convertisseur du retardateur de ventilateur
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English to French translations [PRO] Tech/Engineering - Mechanics / Mech Engineering
English term or phrase:Retarding Grid Blower Inverter
The MID 169, CID 3049 diagnostic code is associated with the Motor 1 ECM positive (+) 15.0 VDC power supply.
Two ECM circuits are used to supply positive power to the cabinet components.
The two circuits are supplied from the same internal ECM power supply.
The components that are supplied power from the two positive (+) 15.0 VDC power supply circuits are:
The Motor 1 phase current sensors
The CMCT Chopper Grid 1 Current Sensor
The BMCT Contactor Grid 2 Current Sensor
The DCPT 1 Voltage Sensor
The Retarding Grid Blower Inverter (RGBI) Pilot Relay
The FMI 04 means that the Motor 1 ECM has detected that the voltage of either one or both of the power supply circuits is below normal (less than 13.5 VDC).
The following conditions could cause the Motor 1 ECM to activate this diagnostic code:
One or more of the components that are connected to the ECM power supply has an internal short circuit.
One or both of power supply circuits is shorted to Inverter Cabinet ground or shorted to a ground circuit.
Explanation: suggestion : ref:
users.polytech.unice.fr/~buffa/bpv3m/
On distingue le boitier de télécommande, le convertisseur 12v/220 ..... En outre, elle comprend un retardateur qui garde la tension de sortie 24 secondes après que la tension d'entrée soit ... Un ventilateur de CPU pompe environ 0.4A en + 12v. ...
"The retarding Grid Blower Inverter is used to create the 3 phase AC power supply for the grid blower motor. The grid blower motor is a 3 phase AC induction motor. The motor turns the fan that is used to cool the grid resistor elements."
J'espère que ça aidera à comprendre ce dont il s'agit.
inverseur du ventilateur à retard à grille /de la grille/grillage
Explanation: Deux sites, un anglais US, un français suisse, qui montrent le matériel
WESCO COMMANDES DE VENTILATEURS Informations techniques www.wesco.ch/wolu/fr/downloads/tu_regler_f.pdf
Format de fichier: PDF/Adobe Acrobat - Afficher
Inverseur pour ventilateurs axiaux .... Pour la surveillance des caissons de filtres à air, des ventilateurs et de la ... Retard à l'enclenchement env. 45 sec
4 Aug 2011 – Illustration 41. g02104977. Retarding Grid Blower Inverter power supply connections, control circuit connections, and three phases of output to
rcolin Local time: 05:35 Specializes in field Native speaker of: French, English PRO pts in category: 55
Explanation: suggestion : ref:
users.polytech.unice.fr/~buffa/bpv3m/
On distingue le boitier de télécommande, le convertisseur 12v/220 ..... En outre, elle comprend un retardateur qui garde la tension de sortie 24 secondes après que la tension d'entrée soit ... Un ventilateur de CPU pompe environ 0.4A en + 12v. ...
Bernard LOMBARD Local time: 05:35 Specializes in field Native speaker of: French PRO pts in category: 116
l'onduleur de la soufflante de la résistance de freinage
Explanation: transmission électrique sur tombereaux miniers.
retarding = freinage
Au freinage, les moteurs CA de la transmission électrique
produisent du courant dissipé par une résistance (resistor grid).
"Dynamic braking is the use of the electric traction motors of a railroad vehicle as generators when slowing the Locomotive. It is termed rheostatic if the generated electrical power is dissipated as heat in brake grid resistors, and regenerative if the power is returned to the supply line. Dynamic braking lowers the wear of friction-based braking components, and additionally regeneration can also lower energy consumption." http://en.wikipedia.org/wiki/Dynamic_braking
"Caterpillar va lancer son premier tombereau rigide à transmission électrique : le 785 F AC. Depuis la sortie de son premier tombereau minier en 1984, Caterpillar a produit 50 000 de ces engins et domine le marché. Le constructeur s’est toujours fait le champion de la transmission mécanique – un tour de force technique au regard du tonnage de ces engins – à l'opposé de ses concurrents, Liebherr, Terex/Unit Rig, Hitachi/Euclid, Komatsu, qui produisent des engins à transmission électrique. Qu’est-ce qui a changé ? " Les moteurs fonctionnent désormais en courant alternatif. Le rendement a gagné plusieurs points par rapport aux anciens moteurs à courant continu ", explique Joël Cavaillé, directeur commercial de Tractafric. " http://fr.equipment-center.com/actualites/tombereaux-miniers...
"How it works – retardation:
In retardation mode, the motors apply braking force by generating electricity which is converted to DC by the inverters. Braking choppers, connected to the inverters, channel that power straight into a resistor grid that continuously dissipates the energy until the truck reaches standstill. So braking is smooth, like driving a car, but without mechanical brake wear.
IGBT inverters and control The inverters, motors, and alternator are cooled by a dedicated electric blower that operates independently of vehicle speed or engine rpm. This maximizes cooling performance and system reliability. The IGBT inverters, controlled by a SIBAS control unit, transform DC power at constant voltage into AC power at variable frequency and voltage to drive the truck motors. During braking, the inverters send power from the motors back to the DC link. IGBTs have significant advantages. They allow high switching frequencies, which improves the current quality to the motors. This means the drives require no snubbers, and smaller, less complex gate drivers. IGBTs have a high overload capability, which enables electronic protection circuits without fuses. IGBTs, which have a high overload capacity, enable electronic protection circuits without fuses resulting in greatly increased reliability." http://www.industry.siemens.com/datapool/industry/.../SIMINE...
"Continuous safe downhill retarding is fully electric without the use of service brakes. There is no mechanical wear and no need for cooling liquids.
When retarding, each electric wheel motor is driven by it’s set of rear wheels and turns into an AC current producing alternator. The electric energy produced is dissipated into
the air by a DC cooling fan via the resistor grids.
Since retarding power is determined by the motor size it is considerably stronger (4480 kW / 6030 hp) than the available propel power from the diesel engine which, during retarding, runs at low idle enabling it to cool down and conserve fuel."
4367011 Electric Truck Variable Speed Drive Current Oscillations http://www.scribd.com/.../4367011-Electric-Truck-Variable-Sp...
"When dynamic retarding is requested, the Drivetrain ECM will reduce the output of the Generator. The ECM will use the Chopper Module to reduce the voltage of the DC Power bus to less than 1500 VDC before the retarding contactors are closed. Reducing the voltage before the contactors close will reduce wear on the contactor tips. The ECM may decrease the voltage of the bus as low as 1000 VDC depending on the retarding
request. However, the bus voltage will not be allowed below this threshold.
Once the contactors close, the Drivetrain ECM will raise the voltage level of the DC bus proportionally up to approximately 2500 VDC depending on the amount of retarding power that is required.
The retarding contactors are always closed during retarding. When the retarding contactors close, electrical current will be directed through contactor grid 2 resistor elements. The current that is directed through the grid will supply operating DC voltage to the Retarding Grid Blower Inverter (RGBI) through circuits that are tapped off the grid elements. The RGBI will create three phases of AC voltage for the grid blower motor in
order to dissipate the large amount of heat that is created by the resistor elements."
Retarding Function http://www.scribd.com/doc/61579704/2/Retarding-Function
FX Fraipont Belgium Local time: 05:35 Works in field Native speaker of: French PRO pts in category: 1505
The translation workplace 
