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Because safety testing organizations apply a tolerance of ±10% based on the given operating voltage range, the actual test ranges for the above four voltage ranges are:
Our company conducts reliability testing for power supplies based on these ranges to ensure proper operation within the specified working voltage range.
The protection (IP) rating of a power supply is expressed as IPxy, where x represents the dust protection level (ranging from 1 to 6), and y represents the water protection level (ranging from 1 to 8).
Below are the testing methods for various water protection levels:
IPX1 - Method Name: Vertical Drip Water Test
a) Test Equipment: Drip water testing device
b) Sample Placement: Place the sample in its normal working position on a rotating sample table rotating at 1 rpm, with the distance from the top of the sample to the drip nozzle not exceeding 200mm.
Test Conditions: Drip rate of 10 ± 0.5 mm/min
c) Test Duration: 10 minutes
IPX2 - Method Name: 15° Tilt Drip Water Test
a) Test Equipment: Drip water testing device
b) Sample Placement: Position the sample so that one surface forms a 15° angle with the vertical line, with the distance from the top of the sample to the drip nozzle not exceeding 200mm. After testing one surface, rotate to test the next surface, repeating four times in total.
c) Test Conditions: Drip rate of 30 ± 0.5 mm/min
Test Duration: 4 × 2.5 minutes (total 10 minutes)
IPX3 - Method Name: Spray Water Test
a) Test Method: Swing pipe spray water test
Test Equipment: Swing pipe water splash test device
Sample Placement: The sample is placed in such a way that the surface is exposed to the swing pipe, with an appropriate radius of the swing. The sample table height should be within the swing pipe's direct range...
| Standard | Determine the level | Four judgment levels |
IEC/EN61000-4-5 |
Criterion B (Common mode 10kV, Differential mode 6kV) Coupling resistance (Common mode 12 ohms, Differential mode 2 ohms) |
The test results are evaluated according to four criteria: Class A: No electrical impact. Class B: Occasional intermittent operation, but automatically recovers. Class C: Stops working, but can recover after power is turned off and restarted. Class D: Damage。 |
| ANSI/C82.77-5-2017 (Outdoor lighting/UFO) |
Criterion B (Common mode 6kV, Differential mode 6kV) Coupling resistance (Common mode 2 ohms, Differential mode 2 ohms) |
|
IEC/EN 61000-4-5 |
Criterion B (Common mode 6kV, Differential mode 4kV) Coupling resistance (Common mode 12 ohms, Differential mode 2 ohms) |
|
IEC/EN 61000-4-5 |
Criterion B (Common mode 4kV, Differential mode 4kV) Coupling resistance (Common mode 12 ohms, Differential mode 2 ohms) |
The wattage of LED fixtures commonly referred to by LED lighting manufacturers refers to the total input power of the fixture. This value can vary significantly due to the efficiency differences of the internal power supply under different operating conditions. The wattage of the power supply referred to by power supply manufacturers refers to the maximum output power of the power supply. The relationship between the two can be expressed by the following formula:
Fixture total power × Power supply efficiency = Power supply output power.
The safety shell temperature of a product refers to the highest operating shell temperature at a specified location that is allowed by safety certifications, without considering the long-term lifespan of the product. The warranty shell temperature refers to the maximum operating shell temperature of the power supply, which is specified to ensure the product can operate reliably and stably within the warranty period.
To assess whether a power supply can be used for making flicker-free lighting fixtures, check the size of the output ripple current. If the ripple current is less than 10%, the lighting fixture can be flicker-free. If it is between 10% and 20%, the fixture will have low-frequency flicker. If the ripple current exceeds 20% to 100%, the power supply can only be used for making lighting fixtures with visible flicker.
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