供应DYE温度保险丝

CALIBRATION VERIFICATION

         a. The samples of TCO are to be tested using electrically heated static-air oven.

         b. Equilibrium conditions of oven temperature prior to the starting of the test are

            to be established 10℃ below the rated Tf for 2 hours.                   

         c. The temperature is then to be increased at a rate of 0.5℃/minute until the

            TCO opened.                                                               

         d. The opening temperature of each TCO shall not differ by more than plus 0℃

 THERMAL ELEMENT STABILITY(Aging)TEST

          TCO are to be subjected to the following series of tests.  Each sample shall

          function at some time during the test steps.    

          Samples remaining intact at the conclusion of each step are to be submitted

          to the next step.

           STEP 1.                                                                  

              The samples are to be subjected to a temperature Tf minus 15℃ for 3weeks.

             At the conclusion, at least 50% of the samples shall not have functioned.

           STEP 2.

              Tf minus 10℃ for 2 weeks

           STEP 3.

              Tf minus 5℃ for 1 week

STEP 4

 Tf minus 3℃ for 1 week

           STEP 5.

              Tf plus 3℃ for 24hours

     6. INSULATION RESISTANCE

          Affer the fusing test of TCO, insulation resistance between lead and contact lead of

         the test sample shall be more than 0.2MΩ.    The insulation resistance to be

         measured with a DC voltage of twice the rated voltage.                  

     7. DIELECTRIC VOLTAGE WITHSTAND

         TCO shall withstand for 1 minute without breakdown a 60Hz essentially

         sinusoidal potential twice the rated voltage applied between leads or terminals

        of an opened TCO.