IEC60335-1 Clause 11 Black Test Corner | Temperature Rise Test Corner

The TMPWS series Temperature Rise Test Corner is a standardized environmental simulation device designed specifically for testing the temperature rise performance of electrical and electronic products. It function is to replicate the test environments required by standards such as IEC 60335-1:2023, providing stable and compliant temperature rise testing conditions for home appliances, medical devices and information technology products. Using precisely arranged K-type thermocouples and brass temperature measuring strips, the TMPWS series collects real-time temperature data from key components of the tested product (such as windings, housings and terminal blocks) during operation. Based on the stability criterion of a “temperature difference of ≤2°C over three hours,” it accurately calculates the temperature rise value, providing key data support for evaluating product lifespan, heat dissipation design rationality, and safety compliance.

The TMPWS series Temperature Rise Test Corner can be optionally equipped with TMP-16 series Multiplex Temperature Tester for simultaneous multi-channel data recording and analysis, automatically generating temperature rise curves and test reports. This device serves a wide range of R&D, verification, and quality control needs for LED lighting, home appliance manufacturers, medical device companies and third-party testing organizations.

Standards:

Specifications:

Note: Other inner size can be customized according to customer requirements!

Applications:
1. Household and Similar Appliance Industry
• Small Appliance Temperature Rise Testing: Measure the temperature rise of windings, heating plates, and casings of small appliances such as rice cookers, electric kettles, and microwave ovens. Verify that the temperature rise of key components meets the requirements of GB 4706.1-2024, Chapter 11 (IEC 60335-1:2023, Clause 11 “Heating”) when operating at rated power, preventing overheating that could cause aging of plastic components or burns to users.
• Large Appliance Performance Verification: For high-power components such as refrigerator compressors, air conditioner outdoor units, and washing machine motors, the TMPWS series test corners simulate actual operating environments, monitor temperature rise changes after long-term operation, and evaluate whether the heat dissipation design meets lifespan requirements (e.g., compressor winding temperature rise ≤80K, compatible with Class A insulation).

2. Medical Electrical Equipment
• Diagnostic Equipment Testing: Verify the temperature rise of power modules and motherboard chips in medical monitors, ultrasound diagnostic equipment, and other devices to ensure compliance with the “Basic Safety and Essential Performance” requirements for medical devices in Chapter 11 of GB 9706.1-2020 (IEC 60601-1:2020 Clause 11). This ensures that the devices do not suffer data distortion or shutdown due to overheating during continuous operation.
• Therapeutic Equipment Verification: For heat-generating components (such as electrode interfaces and motor driver boards) in medical high-frequency electrosurgical units and infusion pumps, multi-channel thermocouples are used to monitor the temperature rise in real time to prevent high temperatures from affecting treatment safety or device stability.

3. Information Technology and Audio and Video Equipment Industry
• Power Adapter Testing: Detects the temperature rise of the transformer and rectifier bridge in laptop power supplies and mobile phone fast-charging adapters. This test complies with IEC 62368-1:2023 Clause 9, ensuring the adapter’s temperature rise is ≤45K when operating at full load to prevent fire risks caused by overheating.
• Audio and Video Equipment Verification: For projectors and audio amplifiers, power amplifier modules and cooling fans are tested using test corners to simulate a closed operating environment, monitor temperature rise curves, and optimize cooling duct design to prevent automatic shutdown due to overheating.

4. Testing and R&D Areas
• Third-party laboratory compliance testing: Testing organizations such as SGS and CQC use the TMPWS series test corners to provide companies with temperature rise compliance testing reports for home appliances and medical devices based on standards such as IEC 60335-1:2023 Clause 11 and GB 4706.1-2024 Chapter 11, helping them obtain CCC, CE, and FDA certifications.
• Enterprise R&D Optimization: During the development phase of new products (such as energy-saving rice cookers and portable monitors), home appliance and medical device manufacturers use the test corners to compare temperature rise data from different cooling solutions (such as adding heat sinks or optimizing fan speed) to identify the optimal design solution and balance product performance and safety.

IEC60335-1 Clause 11 Temperature Rise Test

IEC60335-1 Clause 11 Temperature Rise Test

What is Temperature Rise Test Corner?
The temperature rise angle refers to the temperature of various components in electrical and electronic equipment above the ambient temperature. When current flows through a conductor, the thermal effect of the current is generated. Over time, the surface temperature of the conductor continuously rises until it stabilizes. Stability is achieved when the temperature difference between the previous and subsequent measurements does not exceed 2°C over a three-hour period. The measured surface temperature at this point is the final temperature of the conductor, and the unit of temperature is degrees (°C). The portion of this temperature rise that exceeds the ambient air temperature (ambient temperature) is called the temperature rise, and the unit of temperature rise is Kelvin (K). Some articles, test reports, and examination questions regarding temperature rise often use the unit (°C). Expressing temperature rise in degrees (°C) is inappropriate. It should be expressed in (K/W).
To verify the lifespan and stability of electronic products, the temperature rise of key components (such as IC chips) is often tested. The device under test is operated at a specific temperature (T=70°C), higher than its rated operating temperature (T=25°C). After stabilization, the component’s temperature rise above the ambient temperature is recorded to verify the design’s suitability. For electrical products, the rated temperature rise of a motor refers to the maximum allowable temperature rise of the motor windings at the specified design ambient temperature (+40°C). This is determined by the winding’s insulation grade. The temperature rise of the test angle is determined by the motor’s heat generation and heat dissipation during operation. The temperature rise is often used to determine whether the motor’s heat dissipation is adequate.

IEC60335-1 Clause 11 Black Test Corner | Temperature Rise Test Corner - Introduction Video