1 Switch specifications, models should match design files or notifications.
1.2 The electrical performance of the switch should meet the ratio of 220V / 50Hz, rated current 0.5a, and rated power 15 to 30W.
2 The switch should work normally under the following conditions.
2.1 Power supply voltage 165 ~ 242V / 50Hz
2.2 No flammability, corrosive gases and conductive dust in the surrounding air.
2.3 Use relative humidity should not be greater than 95%.
3 appearance requirements
1 The appearance of the switch should be neat, smooth, no burr, scar, and the nameplate is clear.
2 The surface of the non-metal
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member should be smooth, no crack, no bubbles.
The 3 metal parts should have peripheral acid, weak base, weak salt.
4 plaskets were carried out in 4.9 strokes.
5 Foreign dimensions are provided by design drawings or protocols provided by the switch manufacturer confirmed by the user.
4 Action temperature characteristic value and allowed deviation
Technical protocols are negotiated according to design drawings or both parties.
5 leakage current
The measurement was carried out with a 4.5.4 method, and its value should not be greater than 0.25 mA.
6 contact resistance
The shut-off contact resistance is less than 0.5Ω:
7 insulation resistance
The insulation resistance between the switch leads and the switch housing is greater than 10mΩ.
8 security performance
Insulation intensity test: The switch can withstand AC1500V, 1 min. And there is no breakdown and flashing phenomenon.
9 high temperature test
The highest working ambient temperature of the switch is 125 ± 2 ° C and the temperature is 2 h. After the high temperature test, the switch must meet the provisions of Articles 2-8.
10 low temperature test
The lowest operating ambient temperature is -40 ± 3 ° C and constant temperature 2H After the low temperature test, the switch must satisfy 2 to 8 provisions.
11 overheat test
The switch must meet the provisions of Articles 2-8 after the switch is 150 ± 2 ° C for 5 min, overheating test.
12 temperature change test
After 125 ° C, the switch must meet the provisions of Articles 2 to 8.
13 Decreased Wet heat test
After the 14.6.6 methods are damp heat test, the switch must meet the provisions of Articles 2-8.
14 impact test
The impact test was performed with 4.10 methods. The test point action temperature characteristic value variation should not be more than ± 2 ° C, and hardware and electrical failure should not be generated.