The inspection of the protective ground terminal and the measurement of the insulation resistance of the test box shall be carried out once before and after the standard test, each time shall meet the requirements, and the voltage strength test shall be carried out according to the test standard of GB / T 14048.1-2000, and according to GB / T 14048.1- Insulation resistance test in 2000 standard (the thermal insulation resistance measurement should be in the normal working condition of the test box, complete the test within 10 minutes after shutdown), when the over temperature alarm and protection device test, set the temperature of the alarm and protection device at Select the test temperature and make the test chamber warm up. When the temperature of the center point reaches the set alarm or protection temperature, the alarm device should send a signal, and the safety protection device should act immediately. This test is carried out three times in a row. During the test, the alarm and protection device are qualified for each action.
In addition, the test box should also be tested according to the standard JB / T 9512-1999 noise test method, and the door door (lid) sealing performance inspection and judgment methods, visual inspection of the test box door seal, whether there is salt mist Before the start of the above test and after all of them are finished, visually inspect the appearance of the coating layer once for each inspection.
Test method for performance of safety protection device of test box
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