Sandbag Mechanical Load Testing Machine Manufacturer & Supplier
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Whats/App: +86 156 1874 6768
Web: standard-groups.com
The Sandbag Mechanical Load Testing Machine is a precision instrument designed to assess the mechanical load-bearing capacity of photovoltaic (PV) modules under static and dynamic conditions. By combining sandbag static loads with dynamic pressure from low-friction cylinders, it simulates wind, snow, and ice loads. This enables accurate evaluation of compressive strength, structural stability, and overall reliability, ensuring PV modules perform safely under real-world environmental conditions.
Standards
The machine is designed to comply with international and domestic PV module mechanical testing standards:
GB/T 9535 series – Mechanical Load Testing of Photovoltaic Modules
IEC 61215 – Crystalline Silicon PV Module Design Qualification and Type Approval
IEC 61646 – Thin-Film PV Module Design Qualification
IEC 62782 – Mechanical Load Testing of PV Modules under Snow and Wind
UL 1703 – Safety Standard for Photovoltaic Modules
Parameters
| Item | Technical Parameter |
|---|---|
| Machine Dimensions | L 280 × D 180 × H 195 cm |
| Forward Load | 5400 Pa (adjustable) |
| Reverse Load | 2400 Pa (adjustable) |
| Cycle Count | Programmable |
| Dynamic Load Frequency | 7 s ±3 s |
| Dynamic Load | 1000 Pa × 1000 cycles |
| Pressure Control Accuracy | ±5% |
| Force System | Sandbag + low-friction cylinder + tension/compression sensor (0.1 N accuracy) |
| Frame Material | Aluminum profile structure with electrophoretic surface treatment |
| Max Test Size | 2000 × 1000 mm (customizable) |
| Custom Fixtures | Adjustable according to module installation |
| Electrical Continuity System | DC 150 V / 2 A, real-time monitoring |
| Number of Cylinders | 8 (4 sets × 2) |
| Cylinder Force per Set | >200 kg |
| Cylinder Stroke | 150 mm |
| Suction Cups | 32 (8 sets × 4) |
| Suction Cup Diameter | 120 mm |
| Suction Cup Spacing | ≤200 mm (horizontal/vertical) |
| Suction Cup Joint Rotation | ≥15° |
Features
Combines sandbag static load and cylinder dynamic load to simulate real environmental conditions.
Aluminum frame provides uniform force distribution; electrophoretic surface treatment ensures durability.
Maximum test size 2000×1000 mm; custom sizes available.
Custom fixtures allow flexible adaptation to different module installation methods.
Electrical continuity system ensures module circuitry safety during testing.
Mature upper computer software with user-friendly interface; supports Chinese and English.
Real-time display of pressure, deformation, cycle count, and electrical continuity.
Automatic pressure stabilization to target values, with continuous monitoring.
Data storage and report generation in Word, Excel, PDF, and JPG formats.
Fault warning system provides alerts and operational guidance for safe operation.
Accessories
Main Machine: Sandbag loading system, cylinders, suction cups, aluminum profile frame.
Upper Computer Software: Real-time control and data acquisition, multilingual interface.
Custom Fixtures: Adjustable according to module size and mounting method.
Electrical Continuity Monitoring System: DC 150 V / 2 A, real-time monitoring of module circuits.
Force Sensor: Tension/compression sensor, 0.1 N accuracy.
Optional: Pressure calibration kit for periodic calibration of cylinders and sensors.
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