Porcelain lamp socket E27,E40,E26,E14,E12,E26 are very popular in our day-to-day life,” E “in the starting is normally: screw socket, GU10 Gu in the beginning for our day-to-day use with the bayonet. GU:G said lamp kind is often a plug-in, u said lamp presents a U shape, the numbers behind said lamp foot hole center distance (mm, mm). Ways to opt for the appropriate lamp holder,the guidelines as following:
At first, in line with the outlook of ceramic lamp socket,6 recommendations as under:
A) surface treatment effect, colour and sample strategy in accordance with the sampling program
B) rated voltage, rated existing, typical quantity, certification mark,
C) lamp model, voltage, current, certification marks a clear, comprehensive screw cap mouth ring surface really should clean and bright, should really not wrinkle,
D) wires with smooth surface, no scratches, via parts no sharp edges, burrs, uniform insulation thickness, the thread processing reference samples (immersion tin, riveting terminal).
E) the wire is fixed along with the screw is not dropped. Lamp shrapnel and hardware needs without the need of loosening, tilt, and lamp very good contact,
F) no rust surface, no cracks in thick material specifications to meet the needs, the damage.
Secondly,Lamp socket sizes:
A) ceramic total high and step size reference samples, allowing 1mm for the bottom on the lamp holder shrapnel position 17.00mm 0.50mm
B) with line size (cross-sectional area * * length) number of single stranded wire diameter needs to be in accordance together with the approved sample or information specifications;
C) Thread screw lamp holder really should be filled with far more helpful length of one particular in addition to a half times, thread height not less than 7mm;
D) 24.60mm-25.20 mm diameter screw ring holder,;
E) lamp holder contacts thickness not much less than 0.38mm, check the lead end in line with the information and facts specifications is required with tin;
F) shell thickness not much less than 0.20mm, appropriate, size in the gasket matched together with the insulation gasket, cap screw hole size required to meet the needs.
Thirdly,electric strength: Lamp get in touch with piece as well as the casing in normal climatic circumstances (25 DEG C plus or minus ten degrees Celsius, humidity 45 – 75%) ought to withstand 1500VAC/1 minutes (1800VAC/ 1s) with the dielectric strength test shall not discharge, breakdown phenomenon.
Forth, insulation resistance: Lamp speak to piece amongst the shell and the insulation resistance, within the regular climate conditions (25 DEG C plus or minus ten degrees Celsius, humidity 45 – 75%) ought to not be less than 50m ohm.
Finally,wet experiment: inside the wet test box sample into the test chamber prior to, should really first in 45 DEG C plus or minus 2 DEG C beneath the condition of storing 2h, temperature stability of samples inside the temperature is 40 DEG C 2 degrees, relative humidity 90% – 95% beneath the condition of retain 40H, outer surface because of corrosion phenomenon.