GF New Solar Tracker Bearing
To ensure that our products can perform under harsh conditions, GF Solar recently conducted a low-temperature performance test on our DC Tracker Control Unit (TCU). The objective: verify stable operation in sub-zero temperatures for an extended duration.Experimental overview
▍Test Purpose:
- To verify whether the TCU device functions normally after low-temperature treatment.
▍Testing is conducted in accordance with the following standards:
- The test procedures and criteria for evaluating test results are based on Chapter 16, Section 16.1 “Low-Temperature Test” of GB/T 29320-2024 “Technical Requirements for solar tracking Systems in Photovoltaic Power Plants.”
▍Test Sample:
- Equipment Name: Tracking Control Unit (TCU)
- Model Specification: GF-S-TCU-V1.0
- Quantity: 1 set
▍Test Date and Location:
- July 9, 2025
- No. 2 Courtyard, Southeast Corner of the Intersection of Dehui Street and Wenjin North Road, Zheng'an Town, Zhongmu County, Zhengzhou, Henan
▍Test system:
- TCU control unit: Model GF-S-TCU-V1.0, 1 set
- Tracking system type: Single-axis solar mounting system (including flat single-axis and inclined single-axis)
- Tracking mechanism composition:
· Electric Actuator: DC 24V motor with gear reduction mechanism
· Steel Structure Mounting System, Flat Single-Axis, supporting ±60° rotation
· Installation Components: 1P total of 9 solar panels
▍Experimental Equipment:
- High-Low Temperature Test Chamber
▍Environmental Conditions:
- Test Date: July 9, 2025
- Test Location: Henan GF New Energy Technology Co., Ltd. factory test site
- Ambient Temperature: 35.3℃
- Relative Humidity: 52% RH
- Weather Conditions: Sunny, no significant wind interference
Test methods and procedures
▍Experimental Preparation:
- Connect the TCU to the tracking system
- The drive unit and control system of the tracking system are not powered on
▍Experimental Procedure Steps:
1. Place the drive unit and control system of the tracking system, which are not powered on, into the High-Low Temperature Test Chamber, and adjust the temperature of the test chamber to -40℃;
2. Store at -40℃ for 16 hours;
3. Gradually restore the temperature of the test chamber to -25℃ at a rate not exceeding 1℃/min, and let it stand at -25℃ for 2 hours;
4. Power on and operate for 2 hours, and record the operating status of the tracking system;
5. Let it work at room temperature for 2 hours;
6. Control the tracking system to operate in both automatic and manual modes, and record the operating status of the tracking system.
Test results and conclusions
| Test Requirements | The TCU must be shut down and stored at -40℃ for 16 hours, then warmed up to -25℃ , and removed after 2 hours for room temperature testing. | ||||||
|---|---|---|---|---|---|---|---|
| Test Content | Various operating mode tests and parameter settings |
Tracking function | Control function | Protection and storage function |
Communication and synchronization function |
Tracking range and accuracy |
Drive unit |
| Test Results | OK | OK | OK | OK | OK | OK | OK |
| Conclusion | The TCU can function normally after low-temperature treatment. | ||||||
Test photos
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| TCU shuts down at -40℃ and stored for 16 hours. | ||
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| TCU warms up to -25℃, shuts down, and stores for 2 hours. | ||