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Questions and Answers
What details should be clearly marked on the LED lights?
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?
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?
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?
What should be used to test the protection against accidental contact with live parts of LED lights?
After being kept in a humidity chamber for 48 hours, what should the insulation resistance of LED lights be?
After being kept in a humidity chamber for 48 hours, what should the insulation resistance of LED lights be?
What is the purpose of the 28-day test for circuit breakers IC 898?
What is the purpose of the 28-day test for circuit breakers IC 898?
What should be done to the terminals for external conductors of circuit breakers IC 898 during testing?
What should be done to the terminals for external conductors of circuit breakers IC 898 during testing?
Which aspect of circuit breakers IC 898 should be tested using a test finger?
Which aspect of circuit breakers IC 898 should be tested using a test finger?
What should be checked after leaving circuit breakers IC 898 in a humidity chamber for 48 hours?
What should be checked after leaving circuit breakers IC 898 in a humidity chamber for 48 hours?
How long should circuit breakers IC 898 be run at rated operational current to check for temperature changes or smoke?
How long should circuit breakers IC 898 be run at rated operational current to check for temperature changes or smoke?
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