LED Lights and International Standards
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Questions and Answers

What details should be clearly marked on the LED lights?

  • Operating temperature range, IP rating, warranty period, installation instructions
  • Material composition, manufacturing date, product dimensions, weight
  • Color temperature, beam angle, lumen output, lifespan
  • Voltage, wattage, power factor, country of origin (correct)
  • Which materials should not be used for the construction of LED lights?

  • Cotton, wood, silk, paper (correct)
  • Fiberglass, acrylic, polycarbonate, nylon
  • Aluminum, plastic, glass, ceramic
  • Steel, copper, rubber, PVC
  • What material should the earthing screw of LED lights be made of?

  • Stainless steel or titanium
  • Aluminum or copper
  • Plastic or rubber
  • Brass or similar materials (correct)
  • What should be used to test the protection against accidental contact with live parts of LED lights?

    <p>Test finger</p> Signup and view all the answers

    After being kept in a humidity chamber for 48 hours, what should the insulation resistance of LED lights be?

    <p>Greater than 2M ohm</p> Signup and view all the answers

    What is the purpose of the 28-day test for circuit breakers IC 898?

    <p>To test the mechanical and electrical endurance</p> Signup and view all the answers

    What should be done to the terminals for external conductors of circuit breakers IC 898 during testing?

    <p>Tighten the screws and pull</p> Signup and view all the answers

    Which aspect of circuit breakers IC 898 should be tested using a test finger?

    <p>Protection against electric shock</p> Signup and view all the answers

    What should be checked after leaving circuit breakers IC 898 in a humidity chamber for 48 hours?

    <p>Insulation resistance</p> Signup and view all the answers

    How long should circuit breakers IC 898 be run at rated operational current to check for temperature changes or smoke?

    <p>4 to 8 hours</p> Signup and view all the answers

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