The ABB NPCU-01 is a Network Processor and Communication Unit used in ABB’s Relion 670/650 series protection and control IEDs (Intelligent Electronic Devices). It enhances communication capabilities for substation automation. Below are its key technical parameters:

General Information:

• Model: NPCU-01
• Compatible Series: Relion 670/650 (e.g., REL670, REL650)
• Primary Function: Communication and network processing for IEC 61850, DNP3, and other protocols.

Key Technical Parameters:

1. Communication Interfaces:

• IEC 61850-8-1 (GOOSE & MMS)
• IEC 61850-9-2 (Sampled Values, Process Bus)
• DNP3.0 (TCP/IP & Serial)
• IEC 60870-5-103/104
• Modbus RTU/TCP
• Ethernet Ports:
  • Typically 4x RJ45 ports (10/100 Mbps)
  • Optional fiber optic ports (depending on variant)

2. Protocols & Standards Support:

• Time Synchronization:
  • IRIG-B (DC or modulated)
  • PTP (IEEE 1588 Precision Time Protocol)
• Redundancy Protocols:
  • PRP (Parallel Redundancy Protocol)
  • HSR (High-availability Seamless Redundancy)

3. Performance & Processing:

• Real-time communication handling for protection and control signals.
• Supports GOOSE messaging for fast protection tripping (≤ 4ms).
• Sampled Values (SV) support for merging units in digital substations.

4. Hardware Specifications:

• Mounting: Installed in the rear communication slot of REL670/650 IEDs.
• Power Supply:
  • Typically 24–250V DC/AC (depends on the host IED).
• Operating Temperature:
  • -25°C to +70°C (standard industrial range).
• Certifications:
  • IEC 61850 Ed.1 & Ed.2 compliant.
  • EMC: IEC 61000-4 (electromagnetic compatibility).

5. Cybersecurity Features:

• Role-Based Access Control (RBAC)
• IEC 62351 (Security for power system communications)
• Secure authentication & encrypted communication

Typical Applications:

• Digital substations (IEC 61850 process bus).
• SCADA & control systems (DNP3, Modbus).
• Protection automation (GOOSE for interlocking/tripping).

Main Brand:

ABB      Allen-Bradley      Alstom      Bently         Emerson     Foxboro

GE       MOOG       Schneider       Woodward       HIMA        Honeywell  

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ABB: Pioneering Electrification & Automation

 1. Company Profile

• ABB(Asea Brown Boveri), a Swiss-Swedish multinational headquartered in Zurich, is listed on the Zurich, Stockholm, and NYSE stock exchanges. Formed in 1988 through the merger of    ASEA (Sweden) and BBC Brown Boveri (Switzerland), it combines over a century of industrial expertise.

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