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      NDBU-95C 64008366D

      Branching Unit

      Product Information

      Product Describe

      Ddcs Branching Unit 24Vdc

      Optical divider NDBU 95-coat;

      Optical divider NDBU 95-coat;

      plastic fibre;  1/9 channels

      • Manufacturer:
        ABB
      • Product Category:
        DCS System
      • Estimated shipping dimensions:
        26.4 x 9.4 x 4.1 cm
      • Weight:
        1 kg
      • Tariff Code:
        8537101190
      • Country of origin:
        sweden
      • Place of shipment:
        Xiamen, Fujian, China
      • Product Type:
        Branching Unit
      • Category Series:
        ABB Drives
      • Power Supply:
        24 V DC
      • Number of channels:
        1/9 channels
      • WEEE Category:
        Product Not in WEEE Scope
      • Stock:
        20
      By purchasing this item, you agree to the Terms & Conditions
      Moore Automated is NOT an authorized distributor of ABB
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          FAQ

          • What functional role does NDBU-95C 64008366D play within ABB drive-based regenerative energy management architectures?
            The NDBU-95C 64008366D is a high-performance brake chopper unit designed to dissipate excess regenerative energy generated on the DC link during deceleration or overhauling load conditions. By dynamically controlling braking resistors, NDBU-95C 64008366D stabilizes the DC bus voltage and protects ABB AC drives from overvoltage stress, thereby ensuring operational continuity and system longevity.
          • Which DC link voltage range is supported by NDBU-95C 64008366D, and how does this influence drive compatibility?
            The NDBU-95C 64008366D is engineered for ABB drive systems with a nominal DC link voltage of approximately 600 V DC, typically operating within a permissible range of 450 to 820 V DC. This voltage window ensures seamless compatibility with a broad spectrum of ABB low-voltage AC drives, including ACS and ACH series platforms.
          • How does NDBU-95C 64008366D manage braking power, and what are its rated dissipation capabilities?
            The NDBU-95C 64008366D supports a maximum braking power rating of 95 kW, making it suitable for high-inertia and high-dynamic applications. Its intelligent switching circuitry modulates current flow to external braking resistors, efficiently converting regenerative electrical energy into thermal energy while maintaining DC bus stability.
          • Which braking resistor configurations are electrically compatible with NDBU-95C 64008366D?
            The NDBU-95C 64008366D supports externally mounted braking resistors with resistance values selected to match the DC voltage level and braking power requirements. ABB recommends resistor assemblies specifically rated for 600 V DC systems, ensuring correct thermal performance, safe current limits, and compliance with ABB drive protection strategies.
          • What thermal management and environmental considerations apply to NDBU-95C 64008366D installations?
            The NDBU-95C 64008366D is designed for installation in ventilated electrical enclosures with an ambient operating temperature range of 0°C to +40°C without derating. Adequate airflow and thermal clearance are essential to dissipate internally generated heat and to maintain reliable long-term braking performance.
          • What protection and diagnostic mechanisms are embedded in NDBU-95C 64008366D?
            The NDBU-95C 64008366D incorporates internal protection against overcurrent and overheating, safeguarding both the brake chopper and connected braking resistors. These protection mechanisms enhance system reliability and reduce maintenance risks in demanding industrial duty cycles.
          • How does NDBU-95C 64008366D support system scalability and future drive upgrades?
            By decoupling braking energy management from the drive inverter, NDBU-95C 64008366D allows system designers to scale braking capacity independently of motor power. This modularity simplifies future upgrades and enables adaptation to evolving process dynamics without replacing the core drive infrastructure.

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