ABB NDBU-95C

Description

The ABB NDBU-95C is a medium-voltage surge arrester designed to protect electrical equipment from transient voltage spikes in medium-voltage power distribution systems. Here’s a breakdown of its function and key characteristics:

Function:

• Surge arresters like the ABB NDBU-95C safeguard electrical equipment from sudden voltage surges caused by lightning strikes, switching operations, or other transient events.
• These surges can damage insulation, degrade component performance, and lead to equipment failure.
• The NDBU-95C diverts these high-voltage surges away from sensitive equipment by providing a low-impedance path to ground.

Key Characteristics:

• Voltage Rating: The “NDBU” in the code likely refers to “Network Distribution Branching Unit,” indicating its application in medium-voltage distribution systems. Its specific voltage rating might not be explicitly stated as “95C” but should be available in the datasheet or through ABB support (refer to “Finding Specific Information” section below).
• Current Rating: The NDBU-95C’s maximum surge current rating, specified in kiloAmperes (kA), determines the level of surge it can safely divert to ground.
• AC/DC Compatibility: The NDBU datasheet (refer to “Finding Specific Information” section below) will clarify if this specific variant (NDBU-95C) is suitable for both AC and DC systems or only AC systems.

Finding Specific Information:

To obtain detailed specifications, installation instructions, and compatibility information for your ABB NDBU-95C, refer to the following resources:

1. ABB NDBU Datasheet:

   • Search the ABB website for the datasheet corresponding to the exact product code (NDBU-95C). The datasheet will provide comprehensive details such as:
     • Voltage Rating: The specific medium-voltage rating (e.g., 12 kV, 24 kV) the surge arrester is designed for.
     • Current Rating: The maximum surge current the arrester can safely handle.
     • Dimensions and Weight
     • Installation Instructions and Diagrams
     • Compatibility Information (AC/DC systems)
     • Part numbers for replacement components
   • You can find ABB datasheets through their online product catalogs or by contacting ABB support.

2. ABB Support:

3. • Contact ABB’s technical support team for assistance with specific questions or clarifications regarding the NDBU-95C. They can provide details on:
     • Compatibility with your specific medium-voltage system.
     • Selection of appropriate surge arresters based on your system requirements.
     • Troubleshooting surge arrester malfunctions.

Important Note:

• Ensure you use the correct surge arrester model compatible with your system’s voltage level and fault current ratings.
• Installation of surge arresters should be performed by qualified electrical personnel following ABB’s recommended guidelines.

In conclusion, the ABB NDBU-95C is a medium-voltage surge arrester that protects electrical equipment from damaging voltage spikes. Consulting the ABB datasheet and contacting ABB support can provide you with the most accurate information for its application and use within your specific system.