Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Voltage | 48-250V DC/100-240V AC |
| Current Inputs | 1A or 5A (configurable) |
| Voltage Inputs | 100V or 110V (phase-to-phase) |
| Binary Inputs | 14 (24-250V DC) |
| Binary Outputs | 10 (relay contacts) |
| Communication | 2×RJ45 Ethernet, 2×RS485 |
| Protection Class | IP40 (front panel) |
| Certifications | IEC 60255, IEEE C37.90, UL 508 |
| Operating Temperature | -40°C to +70°C |
| Dimensions | 19″ rack-mount design (4U) |
Key Features & Functions
- Advanced Protection Functions:
- Differential protection (87T) with harmonic restraint
- Restricted earth fault (64REF) protection
- Overcurrent (50/51), overvoltage (59), and undervoltage (27) protection
- Thermal overload protection (49)
- Monitoring & Control:
- Real-time measurement of currents, voltages, power, and energy
- Circuit breaker condition monitoring
- Load tap changer (LTC) supervision
- Fault recording (up to 128 events)
- Communication Capabilities:
- Dual Ethernet ports (IEC 61850 Ed.2 compliant)
- Modbus RTU/TCP protocols
- DNP3.0 and IEC 60870-5-103/104 support
- Optional fiber optic communication
- Robust Design:
- High EMC immunity (IEC 60255-26)
- Compact 19″ rack-mount design
Application Scenarios
- Power Transformers:
- 2-winding and 3-winding transformers
- Generator step-up transformers
- Industrial plant transformers
- Renewable energy substations
- Industrial Automation:
- Integrated control in manufacturing and industrial processes
- Building Power Systems:
- Management and optimization of energy usage in commercial and residential buildings
Supported Industrial Protocols
The ABB RET620E-1G NBTNAANNNBA1BNN11G supports the following industrial communication protocols:
- Modbus: Supports Modbus RTU and Modbus TCP/IP for serial communication.
- Profibus: Supports Profibus DPV1 for industrial automation networks.
- IEC 61850: Used for digital substation communication.
- DNP3: Used for power system monitoring and control.
- Ethernet: Supports high-speed data transmission and network communication.
Additionally, it supports redundant Ethernet interfaces with PRP or HSR protocols and ring self-healing RSTP communication to improve communication reliability .
Scalability and Expandability
The ABB RET620E-1G NBTNAANNNBA1BNN11G is designed with excellent scalability and expandability in mind. It supports multiple communication interfaces and protocols, making it easy to integrate with other devices and systems. The modular design allows users to add or upgrade functional modules according to their evolving needs .
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