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Testing Rules for Lighting Products Part2: Low Temperature Test and High Pressure Experiment

C: Low Temperature Test.

The main test equipments: the power supply, low temperature chamber, thermometer, pressure regulator, the voltmeter and clock.

Number of Tests: 10.

1. The main test projects: low temperature starting

Test methods: Put the lamps and lanterns in the low temperature humidity chamber, connect the rated voltage power supply, set the temperature at-15 ℃for 2 hours, when the lamps and lanterns is cooling enough, open the power supply of the lamps and lanterns, watch the experiment result. If there is the abnormal phenomenon of damaging the lamps and lanterns, failing to start, the experiment is not qualified.

2. The main test project: low temperature and low voltage starting.

Raise the output voltage of the voltage regulator to 180 V (pressure regulator only powers the lamps and lanterns), open the power supply of the low temperature chamber, set the temperature in-10 ℃, when the temperature drops to s-10 ℃, keep it for 2 hours, after the lamps and lanterns is cooling enough, open the power supply of the lamps and lanterns , watch the experiment result. If there is the abnormal phenomenon of damaging the lamps and lanterns, failing to start, the experiment is not qualified.

D: Low Temperature and High Pressure Impact Experiment.

The main test equipments: low temperature chamber, thermometer, pressure regulator, the voltmeter and clock.

The main test projects: low temperature and high pressure impact reliability

Number of tests: 10.

Testing methods: According to the above experiment, under the condition of low temperature, raise the voltage regulator to 250 V, switch the lamps for three times and each time interval is no less than eight seconds (8 seconds means that all the capacitance of the lamps and lanterns discharge to reduce the mutual interference), and in the process, lamps and lanterns should not be damaged, otherwise they will be considered as not qualified.


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