IEEE1513 Temperature Cycle Test and Wet Freezing Test, Humidity Heat Test 2 Steps: Both modules will perform 200 cycle temperature cycles between -40 °C and 60 °C or 50 cycle temperature cycles between -40 °C and 90 °C, as specified in ASTM E1171-99. Note: ASTM E1171-01: Test method for photoelectric modulus at Loop Temperature and humidity Relative humidity does not need to be controlled. The temperature variation should not exceed 100℃/ hour. The residence time should be at least 10 minutes and the high and low temperature should be within the requirement of ±5℃ Requirements: a. The module will be inspected for any obvious damage or degradation after the cycle test. b. The module should not show any cracks or warps, and the sealing material should not delaminate. c. If there is a selective electrical function test, the output power should be 90% or more under the same conditions of many original basic parameters Added: IEEE1513-4.1.1 Module representative or receiver test sample, if a complete module or receiver size is too large to fit into an existing environmental test chamber, the module representative or receiver test sample may be substituted for a full-size module or receiver. These test samples should be specially assembled with a replacement receiver, as if containing a string of cells connected to a full-size receiver, the battery string should be long and include at least two bypass diodes, but in any case three cells are relatively few, which summarizes the inclusion of links with the replacement receiver terminal should be the same as the full module. The replacement receiver shall include components representative of the other modules, including lens/lens housing, receiver/receiver housing, rear segment/rear segment lens, case and receiver connector, procedures A, B, and C will be tested. Two full-size modules should be used for outdoor exposure test procedure D. IEEE1513-5.8 Humidity freeze cycle test Humidity freeze cycle test Receiver Purpose: To determine whether the receiving part is sufficient to resist corrosion damage and the ability of moisture expansion to expand the material molecules. In addition, frozen water vapor is the stress for determining the cause of failure Procedure: The samples after temperature cycling will be tested according to Table 3, and will be subjected to wet freezing test at 85 ℃ and -40 ℃, humidity 85%, and 20 cycles. According to ASTM E1171-99, the receiving end with large volume shall refer to 4.1.1 Requirements: The receiving part shall meet the requirements of 5.7. Move out of the environment tank within 2 to 4 hours, and the receiving part should meet the requirements of the high-voltage insulation leakage test (see 5.4). module Purpose: Determine whether the module has sufficient capacity to resist harmful corrosion or widening of material bonding differences Procedure: Both modules will be subjected to wet freezing tests for 20 cycles, 4 or 10 cycles to 85 ° C as shown in ASTM E1171-99. Please note that the maximum temperature of 60 ° C is lower than the wet freezing test section at the receiving end. A complete high voltage insulation test (see 5.4) will be completed after a two to four hour cycle. Following the high voltage insulation test, the electrical performance test as described in 5.2 will be carried out. In large modules may also be completed, see 4.1.1. Requirements: a. The module will check for any obvious damage or degradation after the test, and record any. b. The module should exhibit no cracking, warping, or severe corrosion. There should be no layers of sealing material. c. The module shall pass the high voltage insulation test as described in IEEE1513-5.4. If there is a selective electrical function test, the output power can reach 90% or more under the same conditions of many original basic parameters IEEE1513-5.10 Damp heat test IEEE1513-5.10 Damp heat test Objective: To evaluate the effect and ability of receiving end to withstand long-term moisture infiltration. Procedure: The test receiver is tested in an environmental test chamber with 85%±5% relative humidity and 85 ° C ±2 ° C as described in ASTM E1171-99. This test should be completed in 1000 hours, but an additional 60 hours can be added to perform a high voltage insulation leakage test. The receiving part can be used for testing. Requirements: The receiving end needs to leave the damp heat test chamber for 2 ~ 4 hours to pass the high voltage insulation leakage test (see 5.4) and pass the visual inspection (see 5.1). If there is a selective electrical function test, the output power should be 90% or more under the same conditions of many original basic parameters. IEEE1513 Module test and inspection procedures IEEE1513-5.1 Visual inspection procedure Purpose: To establish the current visual status so that the receiving end can compare whether they pass each test and guarantee that they meet the requirements for further testing. IEEE1513-5.2 Electrical performance test Objective: To describe the electrical characteristics of the test module and the receiver and to determine their peak output power. IEEE1513-5.3 Ground continuity test Purpose: To verify electrical continuity between all exposed conductive components and the grounding module. IEEE1513-5.4 Electrical isolation test (dry hi-po) Purpose: To ensure that the electrical insulation between the circuit module and any external contact conductive part is sufficient to prevent corrosion and safeguard the safety of workers. IEEE1513-5.5 Wet insulation resistance test Purpose: To verify that moisture cannot penetrate the electronically active part of the receiving end, where it could cause corrosion, ground failure, or identify hazards for human safety. IEEE1513-5.6 Water spray test Objective: The field wet resistance test (FWRT) evaluates the electrical insulation of solar cell modules based on humidity operating conditions. This test simulates heavy rain or dew on its configuration and wiring to verify that moisture does not enter the array circuit used, which can increase corrosiveness, cause ground failures, and create electrical safety hazards for personnel or equipment. IEEE1513-5.7 Thermal cycle test (Thermal cycle test) Objective: To determine whether the receiving end can properly withstand the failure caused by the difference in thermal expansion of parts and joint materials. IEEE1513-5.8 Humidity freeze cycle test Objective: To determine whether the receiving part is sufficiently resistant to corrosion damage and the ability of moisture expansion to expand the material molecules. In addition, frozen water vapor is the stress for determining the cause of failure. IEEE1513-5.9 Robustness of terminations test Purpose: To ensure the wires and connectors, apply external forces on each part to confirm that they are strong enough to maintain normal handling procedures. IEEE1513-5.10 Damp heat test (Damp heat test) Objective: To evaluate the effect and ability of receiving end to withstand long-term moisture infiltration. I EEE1513-5.11 Hail impact test Objective: To determine whether any component, especially the condenser, can survive hail. IE EE1513-5.12 Bypass diode thermal test (Bypass diode thermal test) Objective: To evaluate the availability of sufficient thermal design and use of bypass diodes with relative long-term reliability to limit the adverse effects of module thermal shift diffusion. IEEE1513-5.13 Hot-spot endurance test (Hot-Spot endurance test) Objective: To assess the ability of modules to withstand periodic heat shifts over time, commonly associated with failure scenarios such as severely cracked or mismatched cell chips, single point open circuit failures, or uneven shadows (shaded portions). I EEE1513-5.14 Outdoor exposure test (Outdoor exposure test) Purpose: In order to preliminarily assess the capability of the module to withstand exposure to outdoor environments (including ultraviolet radiation), the reduced effectiveness of the product may not be detected by laboratory testing. IEEE1513-5.15 Off-axis beam damage test Purpose: To ensure that any part of the module is destroyed due to module deviation of the concentrated solar radiation beam.  

What are the High and Low Temperature Explosion-proof Devices? Due to the particularity of the test product, during the test process, the test product may produce a large amount of gas in the high temperature or high pressure state, which may catch fire and explode. In order to ensure production safety, preventive safety protection devices can be used as optional equipment. Therefore, the high and low temperature test chamber needs to add special devices - explosion-proof devices when testing these special products. Today, let's talk about what are the high and low temperature explosion-proof devices. 1. Pressure relief port When the air generated in the test chamber increases and the gas pressure in the chamber reaches a threshold, the pressure relief port automatically opens and releases the pressure outwards. This design ensures that when the system overpressure, the pressure can be released, thereby preventing the system from collapsing or exploding. The location and number of pressure relief ports are determined according to the specific fire extinguishing system design and application requirements. 2. Smoke detector The smoke detector mainly realizes fire prevention by monitoring the concentration of smoke. The ionic smoke sensor is used inside the smoke detector. The ionic smoke sensor is a kind of sensor with advanced technology and stable and reliable operation. When the concentration of smoke particles in the chamber is greater than the threshold, it will sense and alarm to remind the production to stop operation and achieve the effect of preventing fire. 3. Gas detector A gas detector is an instrument that detects the concentration of a gas. The instrument is suitable for dangerous places where combustible or toxic gases exist, and can continuously detect the content of the measured gas in the air within the lower explosive limit for a long time. The gas diffuses into the working electrode of the sensor through the back of the porous film, where the gas is oxidized or reduced. This electrochemical reaction causes a change in the current flowing through the external circuit, and the gas concentration can be measured by measuring the size of the current. 4. Smoke exhaust system The air inlet of the pressurized fan is directly connected with the outdoor air. In order to prevent the outdoor air from being polluted by smoke, the air inlet of the supply fan should not be located at the same level as the air outlet of the exhaust machine. A one-way air valve should be installed on the outlet or inlet air pipe of the fan. Mechanical smoke exhaust system adopts smoke exhaust fan for mechanical exhaust air. According to relevant information, a well-designed mechanical smoke exhaust system can discharge 80% of the heat in the fire, so that the temperature of the fire scene is greatly reduced, and it has an important role in the safety of personnel evacuation and fire fighting. 5. Electromagnetic lock and mechanical door buckle The electromagnetic lock uses the electromagnetic principle to achieve the fixing of the lock body, without the need to use a mechanical lock tongue, so the electromagnetic lock does not exist the possibility of mechanical lock tongue damage or forced destruction. The electromagnetic lock has a high anti-impact strength, when the external impact force acts on the lock body, the lock body will not be easily destroyed, and there will be certain protective measures when the explosion occurs. 6. Automatic fire extinguishing device The automatic fire extinguishing device is mainly composed of four parts: detector (thermal energy detector, flame detector, smoke detector), fire extinguisher (carbon dioxide extinguisher), digital temperature control alarm and communication module. Through the digital communication module in the device, the real-time temperature changes, alarm status and fire extinguisher information in the fire area can be remotely monitored and controlled, which can not only remotely monitor the various states of the automatic fire extinguishing device, but also master the real-time changes in the fire area, which can minimize the loss of life and property when the fire occurs. 7. Indicator and warning light Communicate equipment status or transmission status by visual and acoustic signals to machine operators, technicians, production managers and plant personnel.