Humidity Freeze Test Chamber For Solar Panels
To determine the ability of the module to withstand the effects of high temperature and humidity followed by sub-zero temperatures. After the fabrication of a high power photovoltaic (PV) module, the most critical aspect is the duration for which the module can produce useful power. Reliability and lifetime of photo-voltaic (PV) modules are key factors to system performance and warranty and thus are extremely important as far as PV business is concerned. Outdoor field testing is an accurate method in estimating module lifetime. However, since PV modules commonly come with twenty five years of warranty, testing modules in field for that long period is not feasible. Thus, due to time constraints, many accelerating aging tests have been derived over the years for testing reliability of PV modules. The accelerated test protocols established by organizations like IEC and UL have been adopted worldwide as official tests to evaluate module quality and reliability standards.
Humidity freeze test chamber IEC61215. Test is performed according to IEC 61215:2005. PV modules are subjected to cycling between temperatures of 85°C with relative humidity of 85% and -40°C. PV modules are subjected to 10 complete cycles in the closed climatic chamber. The purpose is to determine the ability of the module to withstand against humidity penetration. The chamber is designed to meet Damp/heat (IEC 61215 MQT 13), thermal cycling (IEC 61215 MQT 11), and humidity freeze test (IEC 61215 MQT 12).
Compare standard TH-series models. For custom sizes, temperature ranges, and humidity options, contact our engineers.
| Model | TH-80 | TH-150 | TH-225 | TH-408 | TH-800 | TH-1000 |
|---|---|---|---|---|---|---|
| Internal Dimension WxHxD (mm) |
400x500x400 | 500x600x500 | 600x750x500 | 600x850x800 | 1000x1000x800 | 1000x1000x1000 |
| External Dimension WxHxD (mm) |
950x1650x950 | 1050x1750x1050 | 1200x1900x1150 | 1200x1950x1350 | 1600x2000x1450 | 1600x2100x1450 |
| Temperature Range | T min: Low Temperature (A: 25℃ B: 0℃ C: -20℃ D: -40℃ E: -60℃ F: -70℃) T max: High Temperature (150℃, 180℃, 200℃) |
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| Humidity Range | Optional: (20%~98% R.H. / 10%~98% R.H. / 5%~98% R.H.) | |||||
| Analytic Accuracy / Distribution Uniformity of Temperature and Humidity |
0.1℃; 0.1% R.H. / ±2.0℃; ±3.0% R.H. | |||||
| Control Accuracy of Temperature and Humidity |
±0.5℃; ±2.5% R.H. | |||||
| Temperature Rising / Falling Speed Rate |
Temperature rising approx. 0.1~3.0℃/min Temperature falling approx. 0.1~1.5℃/min; (The Falling Speed Rate Min. 1.5℃ per minute is a special optional condition) |
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| Material | The material of the inner box is SUS 304# stainless steel, of the outer box is stainless steel or SEE cold-rolled steel with paint coated. Insulation material is resistant to high temperatures, high density, formate chlorine, ethyl acetum foam insulation materials | |||||
| Cooling System | Wind cooling or water cooling / single segment compressor (-40℃), double segment compressor (-70℃) | |||||
| Protection Devices | Fuse-free switch, overloading protection switch for compressor, high and low voltage coolant protection switch, over-humidity, and over-temperature protection switch, fuses, fault warning system, water short storage warning protection | |||||
| Optional Accessories | Inner door with operation hole, Recorder, Water Purifier, Dehumidifier | |||||
| Compressor | French Tecumseh Brand, Germany Bizer Brand | |||||
| Power | AC 220V 1ph 3 lines, 50/60 Hz | AC 380V 3ph 5 lines, 50/60 Hz | |||||
| Approx. Weight (Kg) | 150 | 180 | 250 | 320 | 400 | 450 |
Test is performed according to IEC 61215:2005. PV modules are subjected to cycling between temperatures of 85°C with relative humidity of 85 % and -40°C. PV modules are subjected to 10 complete cycles in the closed climatic chamber in accordance with the profile in the picture below. The purpose is to determine the ability of the module to withstand against humidity penetration.
The designed usage time for solar cell module is about 20~30 years, and the reliability test is the simulation of the earth's surface photovoltaic modules (crystalline silicon and amorphous silicon thin film, concentrating) design verification, can let the module long-term operating more than 20 years in a general climate. Specification requires that solar cells module do test below.
To confirm the solar cell can withstand high temperature and high humidity level with the minus temperature influence, as well as for repeated change caused by the temperature and thermal fatigue failure, in addition to determine solar cells resistant to moisture long-term penetration ability of the test equipment design and ability to meet the relevant standards below:







This humidity freeze test chamber is widely used in photovoltaic and related industries for reliability, stability, and environmental testing.
Humidity-freeze, thermal cycling, and damp heat testing for crystalline silicon and thin-film PV modules.
Design verification and reliability assessment of solar cells and modules for long-term outdoor performance.
Environmental aging tests for energy storage components and related new energy products.
Standard-compliant test conditions for IEC61215, IEC61646, UL1703, and other PV certification requirements.
Environmental stress screening for avionics, sensors, and aerospace components under extreme temperature and humidity conditions.
Reliability testing for ECU, motors, and automotive electronics under thermal cycling and damp heat exposure.
Stability and humidity testing for PCBs, ICs, connectors, and consumer electronics before mass production.
Standard-compliant test conditions for research projects, academic studies, and material research.
Final compliance depends on chamber configuration, test setup, and the latest version of each standard.
Supports Humidity-Freeze (MQT 12), Thermal Cycling (MQT 11), and Damp Heat (MQT 13) tests required by IEC 61215.
PID control and 7" touch screen maintain ±0.5℃ and ±2.5% R.H. accuracy, ensuring repeatable test results.
From -70°C to +200°C, covering extreme humidity-freeze profiles and thermal cycling conditions.
Electronic expansion valve system and high-density insulation reduce power consumption and operating cost.
SUS 304# stainless steel interior resists corrosion from high humidity and repeated cycling.
Over-temperature, over-humidity, compressor overload, and water-shortage protection ensure safe operation.
This humidity freeze test chamber is designed for IEC 61215:2005 and related standards, supporting Humidity-Freeze (MQT 12), Thermal Cycling (MQT 11), and Damp Heat (MQT 13) tests. It subjects PV modules to cycling between 85°C/85% R.H. and -40°C for 10 complete cycles, determining the module's ability to withstand humidity penetration. The chamber is suitable for crystalline silicon and thin-film PV modules, concentrator modules, and related new energy products. It helps manufacturers, testing labs, and research institutes verify module reliability over 20~30 years of outdoor use. ASLI is ISO 9001 certified and has served laboratories, universities, and distributors in 40+ countries since 1988.



PV modules are subjected to cycling between 85°C with 85% relative humidity and -40°C. They undergo 10 complete cycles in a closed climatic chamber. The purpose is to determine the ability of the module to withstand humidity penetration.
It supports Damp/heat (IEC 61215 MQT 13), thermal cycling (IEC 61215 MQT 11), and humidity freeze test (IEC 61215 MQT 12). It also meets related requirements in IEC 61646, UL1703, IEC 62108, IEEE 1513, and IEC 61730.
The chamber offers a wide temperature range from -70°C to +200°C (optional), and humidity ranges of 20–98%, 10–98%, or 5–98% R.H. Custom configurations are available.
Yes. Standard volumes include 80L, 150L, 225L, 408L, 800L, and 1000L. Custom sizes, access ports, shelves, and control systems are available to match your module dimensions and testing workflow.
Standard models are typically shipped within 30 working days after deposit. Custom configurations may take longer depending on specific requirements. The exact schedule is confirmed before order based on the model and configuration.
We accept T/T (30% deposit before production, 70% balance before shipment), L/C for large transactions, and Western Union for small spare parts or sample orders. Trade terms including EXW, FOB, CIF, DAP, and DDP are supported.
PP film first, then 10mm foam between the machine and the case, and outside is a standard export plywood case. Vacuum packaging and specialized transport are available on request. We support sea freight, air freight, express services, and specialized transport lines with full customs clearance support.
Feedback within 2 hours, offer a solution in 48 hours, and help to solve the problems. We provide a one-year parts replacement warranty covering accessories and machine issues during the warranty period. Lifelong after-sales service is included at no extra charge.
Yes. Each unit comes with an English installation guide and operation manual, plus a tutorial video. Remote training is available via video call, and on-site installation and training can be arranged for specific regions. Ongoing technical support is provided after installation.
Yes. We support OEM/ODM branding, manuals, packaging, training, and technical support. MOQ and pricing depend on the model and customization. For OEM/ODM orders, MOQ is typically 1–3 units.
Our company is ISO 9001 certified, and many of our products carry CE certification. All equipment can be calibrated by ISO 17025-accredited laboratories. Calibration certificates and test reports are available on request.
Send us your test standard, module size, and required temperature and humidity range. Our engineers will recommend the right model or custom configuration.