About Cabling Installation & Maintenance

Our mission: Bringing practical business and technical intelligence to today's structured cabling professionals

For more than 30 years, Cabling Installation & Maintenance has provided useful, practical information to professionals responsible for the specification, design, installation and management of structured cabling systems serving enterprise, data center and other environments. These professionals are challenged to stay informed of constantly evolving standards, system-design and installation approaches, product and system capabilities, technologies, as well as applications that rely on high-performance structured cabling systems. Our editors synthesize these complex issues into multiple information products. This portfolio of information products provides concrete detail that improves the efficiency of day-to-day operations, and equips cabling professionals with the perspective that enables strategic planning for networks’ optimum long-term performance.

Throughout our annual magazine, weekly email newsletters and 24/7/365 website, Cabling Installation & Maintenance digs into the essential topics our audience focuses on.

  • Design, Installation and Testing: We explain the bottom-up design of cabling systems, from case histories of actual projects to solutions for specific problems or aspects of the design process. We also look at specific installations using a case-history approach to highlight challenging problems, solutions and unique features. Additionally, we examine evolving test-and-measurement technologies and techniques designed to address the standards-governed and practical-use performance requirements of cabling systems.
  • Technology: We evaluate product innovations and technology trends as they impact a particular product class through interviews with manufacturers, installers and users, as well as contributed articles from subject-matter experts.
  • Data Center: Cabling Installation & Maintenance takes an in-depth look at design and installation workmanship issues as well as the unique technology being deployed specifically for data centers.
  • Physical Security: Focusing on the areas in which security and IT—and the infrastructure for both—interlock and overlap, we pay specific attention to Internet Protocol’s influence over the development of security applications.
  • Standards: Tracking the activities of North American and international standards-making organizations, we provide updates on specifications that are in-progress, looking forward to how they will affect cabling-system design and installation. We also produce articles explaining the practical aspects of designing and installing cabling systems in accordance with the specifications of established standards.

Cabling Installation & Maintenance is published by Endeavor Business Media, a division of EndeavorB2B.

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EV Voltage Mystery Solved: How Controllers Dictate Battery Compatibility

Many EV owners wonder what determines their vehicle's operating voltage - is it the battery or the motor? Surprisingly, the answer lies with the electronic controller. This critical component establishes the voltage operating range that dictates battery compatibility and overall system performance.

Standard EV voltages include 48V, 60V, and 72V systems, each with specific operating ranges:

  • 48V systems typically operate between 42V-60V
  • 60V systems function within 50V-75V
  • 72V systems work with 60V-89V rangesHigh-end controllers can even handle voltages exceeding 110V, offering greater flexibility.

The controller's voltage tolerance directly impacts lithium battery compatibility through the ​​Battery Management System (BMS)​​. Lithium batteries operate within specific voltage platforms that fluctuate during charge/discharge cycles. When battery voltage exceeds the controller's upper limit or falls below its lower threshold, the vehicle will not start - regardless of the battery's actual charge state.

EV battery shutdowndaly bms e2w

Consider these real-world examples: A 72V lithium nickel-manganese-cobalt (NMC) battery with 21 cells reaches 89.25V when fully charged, dropping to approximately 87V after circuit voltage drop. Similarly, a 72V lithium iron phosphate (LiFePO4) battery with 24 cells achieves 87.6V at full charge, decreasing to around 82V. While both remain within typical controller upper limits, problems arise when batteries approach discharge. The crucial issue occurs when a battery's voltage drops below the controller's minimum threshold before the ​​BMS protection​​ activates. In this scenario, the controller's safeguard mechanisms prevent discharge, rendering the vehicle inoperable even though the battery still contains usable energy. This relationship demonstrates why battery configuration must align with controller specifications. The number of battery cells in series depends directly on the controller's voltage range, while the controller's current rating determines the appropriate ​​BMS​​ current specifications. This interdependence highlights why understanding controller parameters is essential for proper EV system design.

For troubleshooting, when a battery shows output voltage but cannot start the vehicle, the controller's operating parameters should be the first investigation point. The ​​Battery Management System​​ and controller must work in harmony to ensure reliable operation. As EV technology evolves, recognizing this fundamental relationship helps owners and technicians optimize performance and avoid common compatibility issues.

Media Contact
Company Name: DALY BMS
Email: Send Email
Country: China
Website: https://www.dalybms.com/

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