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UL499 test content

1. Leakage current test

2. Input test

3. Leakage current test under tidal state

4. Normal temperature rise test

Five, high pressure test

6. Stability test

Seven, abnormal test (DRY)

Eight, abnormal test (BYPASSED REGULATING DEVICE)

9. Static pressure and strength test

10. Blown fuse test

11. Power cord pull test

12. Power line thrust test

13. Plastic deformation test

14. Impact test

15. Overflow test

16. Grounding resistance test

Seventeen, waterproof gasket

Aging test

1. Leakage current test

(1) Methods and conditions: place the prototype on an insulating plane to test the leakage current between bare non-charged metal parts or between a plastic casing (with the help of 1*20cm tin foil) and an uncharged conductor, and the following conditions are required to be tested The leakage current of:

a) Before power on

b) Electric heating until thermal equilibrium

c) After a power outage

(2) Requirements: leakage current ≤ 0.5mA. –I8I. 22O. . 403.11

2. Input test

(1) Methods and conditions: The prototype is connected to an adjustable voltage of 120v, 60Hz, fully heated, and the power under 120v is monitored and the voltage required to reach the rated power.

(2) Requirements: 90% of nominal power ≤ test power ≤ 105% of nominal power.

3. Leakage current test under tidal state

(1) Methods and conditions: The test sample is placed in a tidal state with a relative humidity of 88 ± 2% and 32 ± 2 °C for 48 hours, and the following leakage current tests are carried out until the leakage current is stable:

a) Before heating

b) 05s after heating, 5s5min, 5min thermal equilibrium

c) After power off (2) Requirements: leakage current ≤ 0.5mA