{"id":3995,"date":"2024-01-05T03:34:09","date_gmt":"2024-01-05T03:34:09","guid":{"rendered":"http:\/\/hvc-vn.com\/san-pham\/speed-relay\/"},"modified":"2024-01-05T03:34:09","modified_gmt":"2024-01-05T03:34:09","slug":"speed-relay","status":"publish","type":"product","link":"https:\/\/hvc-vn.com\/en\/products\/speed-relay\/","title":{"rendered":"Speed Relay"},"content":{"rendered":"

Advantates<\/h4>\n
    \n
  1. Detecting belt conveyor slippage can prevent conveyor fires and chute clogging.<\/li>\n
  2. Early detection of belt rupture minimizes chute clogging and cargo spillage.<\/li>\n
  3. Accidents can be prevented by detecting overspeed of rotating bodies such as cranes and construction elevators.<\/li>\n
  4. It is pre-adjusted before shipment, so no on-site adjustment is required.<\/li>\n<\/ol>\n

    \"\"<\/p>\n

    Features<\/h4>\n
      \n
    • No power supply required.<\/li>\n
    • Resistant to electrical noise<\/li>\n
    • Suitable for long-term continuous operation<\/li>\n
    • Abundant lineup<\/li>\n<\/ul>\n

      Operating principle<\/h4>\n

      The main structure of a speed switch is a shaft with a permanent magnet and a rotor around it. When the rotation is transmitted from the shaft of mechanical device to the shaft of the speed switch, the permanent magnet rotates together. Rotational force is also generated in the rotor in proportion to the rotational speed of this permanent magnet. At this time, contact operating lever extending from the rotor is designed to push the microswitch. In addition, the contact operation lever is controlled by the return lever and setting spring, and when the rotation speed drops due to slip, the force of the return lever overcomes the rotational force of the rotor. Then, the contact operating lever no longer has the force to hold down the microswitch, and slip can be detected.
      \nOverspeed detection is the opposite of this, and the spring is adjusted so that the microswitch is pressed by overspeed while it is not pressed under normal rated conditions.
      \n\"\"

      How to use?<\/h4>\n
        \n
      1. Determine the mounting position:<\/strong>
        \n\"\"