delay relay การใช้

• The following is a description of the four basic types of time-delay relay contacts.
• Bimetal strips are also used in time-delay relays, lamp flashers, and fluorescent lamp starters.
• When a train stopped at a red stop signal, its presence on the track started a time delay relay.
• Time-delay relays can be constructed to delay armature motion on coil energization, de-energization, or both.
• In 1958, the  Schleicher Relais Werke presented the MZ 54 time-delay relay at the very first industrial trade fair in Hannover.
• Electromechanical and, later, electronic time-delay relays were and are sold in large numbers around the world and made  Schleicher Relais Werke internationally known.
• At that time, it was the first multifunctional time-delay relay in the world, and due to its purely electromechanical basis is still used in many ways.
• Time-delay relay contacts must be specified not only as either normally open or normally closed, but whether the delay operates in the direction of closing or in the direction of opening.
• This magnetic latching feature, different from the use of slugs to delay relay operation, was used in the arrays of reed relays that switched connection paths in the early models of electronic switching systems.
• The 219 packaged family of products, and the 219NE ( Nuclear Energy ) family, encompassed in addition to the standard electro-mechanical versions-the 236 / 237 / 238 family of industrial time-delay relays, the later 246 / 247 / 248 family of advanced time-delay relays, the 255 Series of latching relays, the 311 Series of Sequence / stepper relays, the 349 Series Voltage Sensors and the RSX Series of custom packages controls.
• The 219 packaged family of products, and the 219NE ( Nuclear Energy ) family, encompassed in addition to the standard electro-mechanical versions-the 236 / 237 / 238 family of industrial time-delay relays, the later 246 / 247 / 248 family of advanced time-delay relays, the 255 Series of latching relays, the 311 Series of Sequence / stepper relays, the 349 Series Voltage Sensors and the RSX Series of custom packages controls.