Relay control system. ( Control systems ) A control system in which the error signal must reach a certain value before the controller reacts to it, so that the control action is discontinuous in amplitude. Sistema de control relé.( Sistemas de control ) Sistema de control en el cual la señal de error debe alcanzar un cierto valor antes de que el controlador reaccione, de modo que la acción de control es discontinua en amplitud.

Relay rack. ( Design Engineering ) A standardized steel rack designed to hold 19-inch (48.26-centimeter) panels of various heights, on which are mounted radio receivers, amplifiers, and other units of electronic equipment. Also known as rack. Cuadro de relés , ( Ingeniería de diseño ) Armario de acero normalizado diseñado para sostener paneles de 19 pulgadas (48.26 centímetros) de diversas alturas, sobre los que van montados receptores de radio, amplificadores, y otras unidades de equipo electrónico. Conocido también como armario metálico.

Relay satellite, satélite repetidor de radio, ( Ingeniería aeroespacial ) See: communications satellite (satélite de comunicaciones ) .

Relay , relevador, relai, relais, relé, commutador .(Electrónica - Electronics ) Un relé que realiza uno o más cálculos o funciones lógicas, o ambas, y envía una o más señales resultantes de salida. En general, es un dispositivo que permite controlar con una potencia de entrada, una fuente local de potencia, no habiendo proporcionalidad entre ambas. Dispositivo mediante el cual una pequeña potencia puede controlar una potencia relativamente mayor. Los tiristores y tiratrones pueden utilizarse ambos como relés, pero probablemete el dispositivo más conocido es el de tipo electromagnético, en forma de un contacto mecánico accionado por la armadura de un electroimán. El contacto puede ser múltiple para permitir que varios circuitos se controlen simultáneamente por activación o desactivación del electroimán. Otro dispositivo moderno que lo reemplaza actualmente y que no dispone de contactos mecánicos sinó de material semiconductor, es el relé de estado sólido o SSR, que tiene la forma de una pastilla de componentes integrados. (Sistemas de control ) Dispositivo que recibe información en forma de una o más señales de instrumento, modifica la información o su forma, o ambos, si se requiere, envía una o mas señales resultantes de salida, y no se designa como un controlador, un interruptor, o de otra forma; ; a. c. relay , relé de corriente alterna; bimetal relay, relé bimetálico; box relay , relé de caja; box sounding relay , relé fónico; call relay , relé de llamada;  capacitor timed relay, relé temporizado por condensador; closing relay , relé de cierre; combinational relay circuit, circuito estático de relé; control relay, relé de control; constancy of a relay , constancia de un relevador; cut off relay, relé de corte; dashpot relay , relé retardado por viscosidad, differential relay, relé diferencial; directional relay , relé direccional; electronic relay , relé electrónico; fault sensing relay , relé detector de defecto; field relay , relé de inducción; flat type relay , relé plano; guard relay, relé de seguridad; impulse accepting relay , relé receptor de impulsos; inertia relay, relé de inercia; inverse power relay , relé de inversión de corriente; line relay , relé de línea; mercury contact relay, relé de contacto de mercurio; miniature or midget relay , reld enano, relé miniatura; overcurrent relay , relé de sobreintensidad; overload relay, relé de máximo de intensidad; perforated-tape retransmitter tape relay , retransmisión de cinta perforada; pneumatic relay, relé neumático; protective or protector relay , relé protector; proximity relay, relé de proximidad; quick acting relay , relé de acción rápida; reclosing relay , relé de reconexión; remote control relay, relé de telemando; reverse current relay , relé para corriente en retorno; rotating relay , relé giratorio; sensitive relay , relé sensible; sequential relay circuit, circuito secuenciado de rele; shorting relay , relé de cortocircuito; shunt-field relay, relé de campo derivado; side-stable relay , relé de dos posiciones , signalling relay set, equipo de llamada de frecuencia vocal; slow acting relay , relé de acción lenta; sluggish relay , relé lento; steering relay , relé de gobierno; supervisory relay , relé de supervisión; tape relay centre, centro retransmisor por cinta; telegraph relay, relé telegráfico; testing relay , relé de prueba; thermal relay,relé térmico; thermionic relay , relé termiónico; time delay relay , relé diferido; time limit relay , relé de enclavamiento diferido; totalizing relay , relé integrador; tripping relay, relé desconectador; under-current relay , relé de corriente mínima; undervoltage relay , relé mínimo de tensión; vibrating relay, relé vibrador; voice operated relay , relé de corriente audible; wiper switching relay ,  relé conmutador de escobillas; to relay , relevar.

RELAY

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Relayed, relevado.

Relaying, instalación de relés.

Release altitude, altura de descarga, ( Ingeniería aeroespacial ) Altura sobre el suelo de una aeronave en el momento de la suelta de bombas, cohetes, misiles, blancos aerotransportados, etc.

Release. ( Mechanical Engineering ) A mechanical arrangment of parts for holding or freeing a device or mechanism as required. Evacuación, descarga, disparador, desahogo, puesta en marcha, salida; (mecánica) disparo; disparador, relevador; (máquina de vapor, motor de gasolina) escape; (eléctricidad) desenganche, interruptor; ( Aeronautical Terminology - Terminología Aeronáutica ) Desconexión, liberación, disparo, escape o salida de gases (motor), apertura (relé), desconexión, ruptura (electricidad). ( Ingeniería mecánica ) Un dispositivo mecánico de piezas preparadas para sujetar o dejar libre un dispositivo o mecanismo, según convenga ; release spring, resorte de llamada; bomb release, mando de lanzabombas, reposición; chrono release , cronodisparador; first part release , reposición por un abonado unilateral; forced release , reposición forzada, forcible release circuit, circuito de reposición forzada; last part release , reposición por ambos abonados, bilateral; oil release , salida de aceite; to release, desenganchar, soltar, disparar, dejar escapar, liberar.

Released, puesto en marcha; time released, cronodesconectado.

Releasing, desconexión, disparo, desenganche, desprendimiento.

Releasor, cedente.

Relevancy, aplicabilidad.

Releveling, puesta a nivel.

Reliability, regularidad, seguridad de funcionamiento.

Reliable, de funcionamiento seguro, fiable

Relief angle. ( Mechanical Engineering ) The angle between a relieved surface and a tangential plane at a cutting edge. Ángulo de incidencia, ángulo de despulle, ángulo de rebajo o de relieve, (en Argentina) ángulo de juego. ( Ingeniería mecánica ) El ángulo entre la superficie de incidencia y el plano tangente que pasa por el filo de corte.

Relief crew, ( Aeronautical Terminology - Terminología Aeronáutica ) Tripulación de relevo.

Relief valve, válvula de desahogo o de alivio, válvula de alivio, descargador, respiradero, válvula de apoyo/alivio, válvula de desahogo o de alivio, aliviador.

Relief and Safety Valves : Relief and safety valves prevent equipment damage by relieving accidental over-pressurization of fluid systems. The main difference between a relief valve and a safety valve is the extent of opening at the setpoint pressure.
A relief valve, illustrated in the figure below, gradually opens as the inlet pressure increases above the setpoint. A relief valve opens only as necessary to relieve the over-pressure condition. A safety valve, illustrated in the figure below, rapidly pops fully open as soon as the pressure setting is reached.
A safety valve will stay fully open until the pressure drops below a reset pressure. The reset pressure is lower than the actuating pressure setpoint. The difference between the actuating pressure setpoint and the pressure at which the safety valve resets is called blowdown.
Blowdown is expressed as a percentage of the actuating pressure setpoint.
Relief valves are typically used for incompressible fluids such as water or oil. Safety valves are typically used for compressible fluids such as steam or other gases. Safety valves can often be distinguished by the presence of an external lever at the top of the valve body, which is used as an operational check.
As indicated in the figure below, system pressure provides a force that is attempting to push the disk of the safety valve off its seat. Spring pressure on the stem is forcing the disk onto the seat.
At the pressure determined by spring compression, system pressure overcomes spring pressure and the relief valve opens. As system pressure is relieved, the valve closes when spring
pressure again overcomes system pressure. Most relief and safety valves open against the force of a compression spring. The pressure setpoint is adjusted by turning the adjusting nuts on top of the yoke to increase or decrease the spring compression.

Válvulas de alivio y seguridad : Las válvulas de alivio y seguridad evitan daños al equipo al liberar excesos de presurización accidentales de los sistemas de fluido. La principal diferencia entre una válvula de alivio y una de seguridad es el grado de apertura en el punto de ajuste del valor de consigna ( setpoint).
Una válvula de alivio, ilustrada en la figura arriba, abre gradualmente a medida que la presión de entrada se incrementa sobre el valor de consigna. Una válvula de alivio abre sólo lo necesario para aliviar la condición de sobre presión. Una válvula de seguridad, ilustrada en la figura arriba, salta rápidamente a la posición de abierto tan pronto como el valor de consigna es alcanzado. Una válvula de seguridad permanecerá completamente abierta hasta que la presión caiga debajo del valor de reposición. El valor de reposición es mas bajo que el valor de consigna de la presión actuante. La diferencia entre el valor de consigna de la presión actuante y la presión a la cual la válvula de seguridad se repone es llamado subpresión de reasiento (“blowdown”). La subpresión de reasiento se expresa como una porcentaje del valor de consigna de la presión actuante.
Las válvulas de alivio son típicamente usadas para fluidos incompresibles tales como el agua o el aceite. Las válvulas de seguridad son típicamente usadas para fluidos compresibles tales como el vapor de agua u otros gases. Las válvulas de seguridad pueden ser distinguidas con frecuencia por la presencia de una palanca externa en la parte superior del cuerpo de la válvula, que es usada para chequeo operacional .
Como se indica en la figura arriba, la presión del sistema proporciona la fuerza que intenta empujar el disco de la válvula de seguridad fuera de su asiento. La presión del resorte sobre el vástago por el contrario, fuerza el disco sobre discho asiento.
A la presión determinada por la compresión del resorte, la presión del sistema supera a la presión del resorte y la válvula de alivio se abre. A medida que la presión del sistema es aliviada, la válvula se cierra cuando a presión del resorte supera nuevamente la presión del sistema. La mayoría de las válvulas de alivio y seguridad se abren contra la fuerza de compresión de un resorte. El valor de consigna es ajustado girando y ajustando tuercas en la parte superior de la culata para incrementar o disminuir la compresión del resorte.

Relief, (mecánica) relieve; (hombres) relevo; (presión) alivio, desfogue, desahogo; (máquinas) rebajo, franqueo, aportación, descompresión, descarga , despulle, alivio, desfogue, relieve, socorro , destalonado. ( Ingeniería mecánica ) 1. Espacio obtenido mediante el rebaje de un lado del contrapunto de modo que la herramienta de refrentar o tronzar puede avanzar hasta casi el centro de la pieza. 2. Espacio alrededor del filo cortante que se obtiene quitando material de la herramienta ; compression relief cock, grifo de descompresión; front relief side, ángulo de despulle frontal; side relief angle, ángulo de despulle lateral.

Relieve (to), destalonar.

Relieving. ( Mechanical Engineering ) Treating an embossed metal surface with an abrasive to reveal the base-metal color on the elevations or highlights of the surface. De aligeramiento , realzado ( Ingeniería mecánica ) Tratamiento de la superficie de un metal repujado mediante abrasivo para descubrir el color del metal base en las elevaciones o puntos destacables de la superficie ; stress relieving , eliminación de tensiones internas.

Relight (to) , reencender.

Relighter, encendedor (lámpara seguridad de minas).

Relighting, reencendido.

Relining, realineación, realineado.

Reluctance, reluctancia, resistencia magnética. (Electrónica - Electronics ), De un circuito magnético, la relación entre la fuerza magnetomotriz y la densidad de flujo magnético resultante. Es la inversa de la permeancia, análoga a la resistencia de un circuito eléctrico, directamente proporcional a la longitud l del circuito magnético e inversamente proporcional a la superficie transversal A. De hecho, la reluctancia viene dada por:

donde µ es la permeabilidad del material magnético, análoga a la conductividad de un circuito eléctrico.

Reluctivity, reluctividad, resistencia o reluctancia específica, reluctividad.

Remaining velocity. ( Mechanics ) Speed of a projectile at any point along its path of fire. Velocidad remanente, ( Mecánica ) Velocidad de un proyectil en cualquier punto de su trayectoria de fuego.

Remaking, preparación.

Remanence, remanencia, magnetismo remanente. (Electrónica - Electronics ), La densidad de flujo que permanece en un material magnético que se ha llevado a saturación, al desaparecer el campo magnetizante. Ver figura siguiente :

Fig. Ciclo B-H que presenta remanencia.

Remanent, remanente

Remargin (to) , aumentar el resguardo.

Remodulate (to) , remodular.

Remodulated, remodulado.