Requirements for the wet heat and humidity test chamber of the wet freeze test:
1. A test chamber. Automatic temperature and humidity control, capable of accommodating one or more components for the wet freeze test specified in Figure 5 of the IEC61646-2008 standard.
2. There are devices for installing and supporting components in the PV wet heat and humidity test chamber, and the surrounding air can be freely circulated. The heat transfer of the mounting or support device should be small, so in practice the assembly should be insulated.
3. The instrument that tests and records the temperature of the component with an accuracy of ±1 °C. If multiple components are tested simultaneously, it is only necessary to monitor the temperature of one of the components.
4. An instrument capable of monitoring the electrical continuity of the component throughout the test.
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