Inquiry Regarding Localized Heating of a Specific Component in MEAN WELL LRS-600-36

------Question for LRS-600-36 Please Put your question below------

Dear MEAN WELL Technical Support Team,

We are currently using the MEAN WELL LRS-600-36 power supply and have observed localized heating at a specific internal component, which appears to be a resistor.

The measured temperatures are as follows:

  1. Product model: MEAN WELL LRS-600-36

  2. Ambient temperature: 25°C

  3. External surface temperature of the unit: approximately 50°C

  4. Temperature of the specific internal component, presumed to be a resistor: approximately 100°C

We would like to confirm whether this temperature condition is within the normal operating range of the product.

Please kindly advise on the following points:

Q1. Is a localized temperature of approximately 100°C at this component considered normal during operation?

Q2. What are the design temperature limits or allowable operating temperatures for this specific component and the surrounding components?

Q3. Which component or location is monitored for the over-temperature protection or thermal interlock function of this product?

We would appreciate your technical review and guidance on whether continued operation under this condition is acceptable, or whether any corrective actions are required.

Thank you for your support.

Best regards,

OH JEONGHUN

Hello jeonghun.oh, welcome to the TechForum,

I am checking with the manufacture on this one. Will let you know when I have the information.

The link below contains the test report for the LRS-600-36 unit. Please refer to page 9, which shows the temperature test results for the critical components inside the power supply.

Could you also provide the following information?
• Input voltage
• Output voltage and current
• Type of load connected to the power supply
• Input voltage
• Output voltage and current
• Type of load connected to the power supply