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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?

Test finger 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?

Greater than 2M ohm Signup and view all the answers

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

To test the mechanical and electrical endurance Signup and view all the answers

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

Tighten the screws and pull Signup and view all the answers

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

Protection against electric shock Signup and view all the answers

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

Insulation resistance 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?

4 to 8 hours Signup and view all the answers