Lamp Cap Temperature Rise Test System

The TMP-L Lamp Cap Temperature Rise Test System (equipped with a wind shield) is a specialized device designed for temperature rise testing of lamp burners and lamp caps. Its core supporting component—the wind shield—can effectively prevent air convection interference during the test while isolating the impact of light source thermal radiation on the test sample. This provides a stable environmental condition for testing the lamp cap’s operating temperature, ambient temperature, and temperature rise, ensuring the accuracy of test data.

The system fully meets the technical requirements of IEC 60598:2024 Appendix D (GB 7000.1-2023 Appendix D). It is suitable for temperature rise performance testing of various types of lamps and their accessories, and serves as a key piece of equipment for lamp safety certification and quality control.

Standard:

Specification:

Notes：
• Other dimensions can be designed according to customer requirements (LISUN Model: TMP-LX).
• The TMP-L Lamp Cap Temperature Rise Test Chamber | Wind Shield must be used in conjunction with the LISUN TMP-8 Multiplex Temperature Tester.

Test Procedures

1. Test Preparation

1.1 Equipment Calibration
Use the thermocouple supporting the LISUN TMP-8 Multiplex Temperature Tester as the temperature sensor. The Lamp Cap Temperature Rise Test Chamber shall meet the requirements specified in the standards.

1.2 Test Sample Preparation
Select 3 lamps of the same model (without damage and after completion of initial aging), and record their rated voltage, power, and lamp cap model (e.g., E14, E27, etc.).

1.3 Environment Setup
Adjust the temperature of the test chamber to 25℃±5℃ (for indoor lamps) or 40℃±2℃ (for outdoor lamps), and control the ambient humidity to ≤65% RH.

2. Test Sample Installation and Temperature Measurement Arrangement

2.1 Lamp Installation
Select a standard lamp holder according to the lamp cap model and fix it on a low thermal conductivity bracket. Install the lamp on the lamp holder in its actual service posture to ensure good contact between the lamp cap and the lamp holder.

2.2 Sensor Arrangement
Use high-temperature-resistant tape to attach the thermocouple probe of the TMP-8 Temperature Data Logger tightly to the specified measurement surface of the lamp cap (e.g., the top plane of the E27 screw base). Take another thermocouple and fix it 50mm away from the lamp holder (at the same height as the center of the lamp cap) for collecting ambient temperature.

3. Testing and Data Collection

3.1 Power-On Testing
Supply power to the lamp at ±2% of its rated voltage, record the power-on time, and record temperature data every 5 minutes via the TMP-8 Temperature Data Logger in the first 30 minutes.

3.2 Stability Determination
When the temperature of the lamp cap changes by ≤1℃ continuously for 30 minutes, it is determined that the temperature rise has stabilized. Record the lamp cap temperature (T1) and ambient temperature (T2), and calculate the temperature rise ΔT = T1 – T2.

3.3 Data Storage
Store the complete temperature curve via the TMP-8 Temperature Data Logger, and mark the test sample information, test environment parameters, and test time.

4. Result Determination

4.1 Qualified Determination
If the temperature rise ΔT of all 3 test samples is ≤ the standard limit corresponding to the lamp cap type (e.g., ≤120K for E27 lamp caps) and the data deviation among the 3 samples is ≤5K, the test samples are determined to be qualified.

4.2 Unqualified Determination
If the temperature rise of 1 or more test samples exceeds the standard limit, or the data deviation among the 3 samples is ＞5K, 3 new test samples shall be selected for re-testing. If the re-test still fails, the test samples are determined to be unqualified.

4.3 Report Generation
Organize the test data, temperature curves, and determination results, and generate a test report that meets the standard requirements.

Lamp Cap Temperature Rise Test System - Introduction Video