Professional Custom Lamp Holder Accessories Manufacturer

The coating tuberculosis strength lamp holders test the heating test method.

The sample in the temperature of 300o-5 ° C maintained for 5 min, and then observe the coating should not fall off, peeling and blistering.
Moisture resistance in humid chamber, the samples were placed in the test chamber, should be stored at 45 ℃ for 2 h, temperature stability after sample at a temperature of 40 ± 2 ° C, relative humidity of 90% to 95% of the conditions under for 40h, the outer surface there should be no corrosion phenomenon.

The porcelain lamp holders cap insulator and the housing, the electrical contact piece and the pin connection with a method of appearance inspection.
The firmness of the connection between the ceramic lamp holders and the insulator and the metal shell and the strength of the connection of the socket holder pin and the housing should be, respectively, in a dedicated pressure or shear test apparatus. Should reach in Table 1 and Table 2 values ​​without damage or deformation.

G5 and G13 lamp holder pins torque experiments dedicated Torque Tester. Torque should be zero gradually increased evenly to the specified value, the pins should not be slack, deformed or damaged.
The lamp holder insulation resistance test, measured at normal atmospheric test conditions, the sample should be stored in the condition h after the measurement, when measured in wet conditions can be stored in wet conditions, removed from the chamber 5min within the measurement.

Measured before application of soft paper siphoning off water droplets on the surface of the lamp holder, when measured by 500V DC voltage 1min.