Rising Heat Dissipation Challenges Driven by High Power Density in Data Centers, NEVs, and High-Power Electrical Systems

In data centers, new energy vehicles, high-power electrical equipment, and other fields, the heat dissipation challenge posed by high power density has become increasingly prominent. Liquid-cooled cable glands, with their core advantages of efficient heat dissipation, high current-carrying capacity, and stable sealing, have become key components to address the challenges of high-power transmission and temperature control. As a company focused on R&D and production of connectors, Hongxiang Connector Co., Ltd. has launched the UQDB Series Liquid-Cooled Cable Glands, which are widely used in multiple high-power scenarios to provide reliable guarantees for industrial-grade stable transmission.

★1. Core Specifications and Performance Parameters

The Hongxiang UQDB Series liquid-cooled cable glands are designed to balance electrical performance and heat dissipation efficiency, with the following core specifications:

• Rated Voltage: 0.6/1kV ~ 35kV (higher voltage levels can be customized)
• Rated Current: 100A ~ 1000A (the current-carrying capacity is over 30% higher than traditional glands thanks to liquid cooling)
• Ingress Protection: IP67~IP68 (waterproof and dustproof for outdoor/humid environments)
• Operating Temperature: -40℃ ~ +125℃ (the liquid cooling circuit can stabilize the joint body temperature below 60℃)
• Fluid Medium: Deionized water, ethylene glycol aqueous solution, and other industrial coolants
• Sealing Performance: Bidirectional sealing design, pressure resistance of 0.6~1.0MPa, eliminating the risk of coolant leakage
• Material: Main body made of high-strength aluminum alloy/stainless steel, insulating parts made of high-temperature-resistant engineering plastic, corrosion-resistant and anti-aging

★2. UQDB Series Models and Application Scenarios

Targeting different application needs, the Hongxiang UQDB Series is subdivided into three sub-models to cover full-scenario adaptation:

The entire series supports customized lengths and interface specifications (e.g., G thread, NPT thread, flange connection), and can match liquid-cooled cables of different diameters (10mm²~300mm²).

★3. Application Fields: Covering Full Scenarios of High-Power Transmission

With efficient heat dissipation and reliable performance, the Hongxiang UQDB Series liquid-cooled cable glands have become the preferred solution for multiple industries:

• Data Centers and Computing Infrastructure: Provide high-current transmission for AI servers and supercomputing centers, solving the heat dissipation bottleneck of high-density computing equipment and ensuring 7×24-hour stable operation.
• New Energy Vehicles and Energy Storage: Applied to on-board motors, OBC (On-Board Charger), and energy storage converters, realizing high-current transmission in fast-charging scenarios while controlling joint temperature rise through liquid cooling to extend the lifespan of batteries and power systems.
• Industrial High-Power Equipment: Adapt to photovoltaic inverters, wind power converters, industrial welders, and other equipment, maintaining stable electrical connections and heat dissipation efficiency in outdoor high-temperature and high-vibration environments.
• Special Equipment: Provide highly reliable liquid-cooled connections for rail transit traction systems and marine electric propulsion systems, meeting the requirements of safe transmission under extreme working conditions.

★4. Installation Instructions: Standardized Operations Ensure Long-Term Reliability

1. Pre-Installation Preparation

• Confirm that the UQDB sub-model matches the cable specifications and coolant type, and check that the gland appearance is undamaged and the seals are intact.
• Prepare special tools: torque wrench, wire stripper, coolant pipe joint tools, etc.
  
  
• Clean the cable end and the inside of the gland to ensure no dust, oil, or metal debris.

2. Core Installation Steps

• Cable Pretreatment: Strip the cable outer sheath and insulation layer according to specifications to expose the conductor and liquid cooling pipeline, taking care to avoid damaging the coolant channel.
• Conductor Connection: Insert the cable conductor into the UQDB gland terminal, and fasten it with a torque wrench according to the specified torque (refer to the UQDB model manual for specific torque) to ensure good electrical contact.
• Liquid Cooling Pipeline Docking: Connect the cable liquid cooling pipeline to the internal flow channel of the gland, lock it with a special sealing ring and clamp, and perform a 0.6MPa pressure test with compressed air to confirm no leakage.
• Housing Assembly and Sealing: Install the gland housing and sealing gland in sequence, and tighten the bolts evenly to ensure the ingress protection level is met.
• Overall Testing: Before power-on, circulate the coolant for 10 minutes to check for pipe leakage; then apply rated current to test the temperature rise and confirm that the joint temperature meets the design requirements.
  
  

3. Notes

• It is strictly forbidden to disassemble the UQDB gland under pressure or live conditions to avoid coolant leakage or electrical safety accidents.
• For outdoor installation, an additional waterproof sheath is required. Regularly check the aging of the seals, and it is recommended to conduct a sealing retest every 2 years.
• The liquid cooling circuit must use filtered clean medium to prevent impurities from blocking the flow channel and affecting heat dissipation efficiency.
  
  

★5. Hongxiang Connector: Empowering Industrial Connections with Technology

As a company deeply rooted in the connector field, Hongxiang Connector Co., Ltd. has always been customer-centric and has accumulated rich R&D and production experience in liquid-cooled cable glands. From product design and mold development to mass production, the entire process strictly follows the ISO9001 quality system standard. At the same time, customized adjustments can be made to the UQDB series according to customers' special scenarios, helping various industries achieve efficient and safe high-power transmission.

In the future, with the popularization of high-power density equipment, liquid-cooled cable glands will become a core trend in industrial connections. Hongxiang Connector will continue to iterate the technology of the UQDB series to provide global customers with more competitive liquid-cooled connection products and services.