Photovoltaic Ammonia Test Chamber

Applications

The Photovoltaic Ammonia Test Chamber is a testing device designed to evaluate the corrosion resistance of photovoltaic modules in ammonia environments, ensuring their long-term stable operation in harsh conditions such as industrial or agricultural settings.

Standards

IEC 62716: Photovoltaic (PV) modules—Ammonia corrosion testing (The core standard for this equipment).

IEC 61701: Salt mist corrosion testing of photovoltaic (PV) modules.

IEC 60068-2-52: Environmental testing—Part 2-52: Tests—Test Kb: Salt mist, cyclic (sodium chloride solution).

GB/T 2423.17 / GB/T 2423.18: Environmental testing for electric and electronic products—Salt mist testing methods.

IEC Draft 82/722/CDV: Specific requirements for integrated salt mist and ammonia gas exposure sequences.

Features

This equipment can independently perform all test procedures required by IEC 61701 and IEC Draft Standard 82/722/CDV. Specifically, spray testing at severity levels 1-6. damp heat storage, standard atmospheric environment testing, and sample cleaning phases are all completed within the NaCl corrosion chamber. Ammonia spray testing, damp heat storage, spray washing, and drying can all be performed within the NH3 corrosion chamber.

Parameters

Item	Specifications
NH₃ Concentration	0–10000 ppm (adjustable)
Ammonia Concentration Resolution	±1 ppm
Temperature Control Range	15°C ~ 70°C
Temperature Fluctuation	≤ ±0.5°C
Temperature Deviation	≤ ±1.0°C
Temperature Uniformity	≤ ±2°C
Humidity Control Range	40% ~ 100% RH (adjustable)
Humidity Deviation	≤ ±2% RH
Humidity Uniformity	≤ ±3% RH
Test Accuracy	±2%

Accessories

1.Ammonia Gas Dosing System: Precision mass flow controllers for accurate gas injection.

2.Ammonia Concentration Sensor: High-precision electrochemical or laser-based gas detectors.

3.Specimen Racks: Non-reactive, adjustable holders designed to support full-sized PV modules at standard angles.

4.Exhaust Scrubber Unit: A chemical neutralization system to safely treat ammonia-laden air.

5.NaCl Spray Module: Integrated nozzles and reservoir for salt mist phases (Standard Severity 1-6).

6.Deionized Water Rinse: Internal spray bars for automated sample cleaning between test stages.

Test Procedures

1.‌Preparation‌

‌Sample Preparation‌: Clean samples and secure them on the sample rack, ensuring they do not touch each other.

‌Solution Preparation‌: Prepare a 5% NaCl solution (pH 6.5-7.2) according to the standard.

2.‌Power-On Test

‌Power Connection‌: Connect the power supply and turn on the main switch.

3. Test Operation

Start Test: After confirming parameters are correct, press the “Start” button.

Spray Inspection: Once temperature is reached, the spray system will automatically activate. Observe spray uniformity.

4. Test Completion

Shutdown Procedure: Turn off the spray switch. Allow cooling to below 40°C before disconnecting power.

Sample Removal: Remove specimens for corrosion assessment.

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