ABB NPCU-01

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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