PDF 原檔：報告_OCP2026_UL_浸沒式安全認證_20261015_original.pdf
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| 檔名 | 頁 | 分類 | 親眼所見內容 |
|---|---|---|---|
報告_OCP2026_UL_浸沒式安全認證_20261015_p5.png |
p5 | 文字卡 | 流程四方塊：流體性質評估 → UL 2417 認證 → 系統設計審查 → IEC 62368-1 終端產品認證 |
報告_OCP2026_UL_浸沒式安全認證_20261015_p7.png |
p7 | 真資料圖 | UL 2417 必測項目表：自燃溫度 ASTM E659 ≥300°C、閃點 ASTM D93 ≥135°C、介電崩潰 ASTM D1816 ≥6 kV/mm、紅外光譜 UL 746A（識別用） |
原始內容
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Mark Olson Principal Chemist, UL Solutions Lizzy Fernando Product Manager, UL Solutions Advancing Immersion Cooling Safety: From Fluid Qualification to System Compliance Cooling Environments Immersion Project
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• Provides guidelines for consistent design, security and operations that meet current and future technological needs • Issues requirements on how a code or regulation can be met • Critical for safety of components, subassemblies and systems • Can be voluntary or mandatory • Can be used regionally or globally • Developed and maintained by Standard Development Organizations (SDO) Role of Industry Standards
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Used for established and well- understood technologies Developed through multiyear consensus process Based on industry-accepted and proven requirements Provides long-term, stable industry alignment Used for emerging technologies not yet covered by standards Quick development to support innovation and deployment Based on UL Solutions technical expertise and knowledge Enables timely certification and the foundation for future standards Two Paths to Safety Traditional Standards Outline of Investigation (OOI)
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• IEC 62368-1 is the recognized international standard that applies to information and communication technology equipment and is critical for safety in data centers • Most current version is 4th edition published by IEC on May 26, 2023 • Immersion cooling fluids are called “Insulating Liquids” in the standard • Critical component in the standard • Insulating liquid used as a safeguard shall not break down due to overvoltages, including transients that enter the equipment, and peak voltages that could be generated. • No clear compatibility requirements for materials (only 60-day system-level compatibility test) • Key Gap: Existing standards evaluate electrical safety but provide limited guidance on long-term material compatibility. IEC 62368-1: Immersion Cooling Requirements
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Evaluation of fluid properties UL 2417 Certification System design review IEC 62368-1 end-product Certification Goal: Standardized fluid qualification data that enables faster, safer system certification. From fluid qualification to system compliance
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• UL 2417: Outline of Investigation for Immersion Cooling Fluids for Use with Information and Communication Technology Equipment was published on January 14, 2025 • Contains required testing with minimum performance values that align with IEC 62368-1 requirements for insulating liquids as well as optional tests • Certified UL 2417 immersion cooling fluids are published on the UL Product iQ® database for visibility and to demonstrate compliance with the standard • Establishes a repeatable baseline for immersion cooling fluid qualification • This standard does not address fluid compatibility, a future OOI is in development to address this UL 2417: Immersion Cooling Fluid Requirements
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UL 2417: Required Testing Test Name Test Method Requirement Autoignition temperature test ASTM E659 ≥ 300°C Flash point test ASTM D93 (Procedure A) ≥ 135°C Dielectric breakdown test ASTM D1816 ≥ 6 kV/mm Qualitative infrared analysis UL 746A For fluid identification purposes
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UL 2417: Optional Testing Single-phase: • Moisture (ASTM D1533) • 100% Water Saturation (ASTM D1816 and ASTM D1533) • Kinematic Viscosity and Density (ASTM D7042) • Sulfur Content (ISO 14596) • Total Acid Number (ASTM D664) • Oxidative Stability (ASTM D1934 Procedure B) Two-phase: • Lower Flammability Limit (ASTM E681) • Acidity in Two Phase Immersion Cooling Fluids (AHRI 700 Appendix C)
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• To extend the same framework of UL 2417, later this year we will be publishing a new OOI UL 2417B to evaluate direct to chip liquid coolants • The intended scope is to cover water and water/glycol-based coolants used in direct-to-chip data center applications. • Focus will be on performance testing and not compatibility • Proposed testing may include the following: • Autoignition Temperature (ASTM E659) • Oxidative Stability/Corrosion (ASTM D8040) • Glycol Percentage (Gas Chromatography) • Kinematic Viscosity and Density (ASTM D7042) • pH Test (ASTM D1287) • Freezing Point UL 2417B: Direct-to-Chip Fluid Requirements
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• This year a new OOI UL 4303 was published to evaluate hoses and tubing used in direct to chip liquid cooling • The scope covers hose and tubing performance across a range of safety and durability criteria, including: • Mechanical properties, such as tensile strength, elongation and compression set • Pressure performance, including working pressure, proof pressure and burst pressure • Environmental durability, including heat aging and ozone resistance • Fluid compatibility through exposure to coolant fluids • Dimensional stability, including bend radius and deformation behavior • Flammability through testing to UL 94, Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances UL 4303: Liquid Cooling Hoses and Tubing
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• Continue to seek knowledgeable industry experts that can help advance OCP work with standards organization and regulatory bodies • Interested parties should reach out to the Industry Liaison Team leads • Kelley Mullick Kelley.Mullick@ocproject.net • Maryam Mohagheghi Maryam.Mohagheghi@ocproject.net • Meets every 3rd Thursday of the month • 8am-9am PT/10am-11am CT/17:00-18:00 CET via Zoom call • Stay engaged with UL Solutions as we continue to write new OOIs and they evolve to consensus-based standards: Contact Mark or Lizzy Call to Action
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Thank You! Mark Olson Mark.M.Olson@ul.com http://www.ul.com Lizzy Fernando Elizabeth.Fernando@ul.com