Description
The ABB REL316*4 is a high-performance Numerical Line Protection Relay designed to provide reliable, high-speed distance protection for transmission and sub-transmission lines. As a cornerstone of protective relaying, the REL316*4 utilizes advanced digital signal processing to detect and clear faults with exceptional precision. It is specifically engineered to handle complex network conditions, including heavy load flow, mutual coupling, and evolving fault scenarios, ensuring the stability and integrity of the power grid.
Technical Specifications
| Feature | Details |
|---|---|
| Brand | ABB |
| Model | REL316*4 |
| Origin | Switzerland / Global Manufacturing |
| Power | 48/60V DC or 110/220V DC (Selectable) |
| Input/Output | Multi-zone Distance Protection / Directional Earth-Fault |
| Function | Primary and Back-up Line Protection |
| Color | Industrial Black/Gray |
| Hot Swappable | Modular (Requires careful handling of terminal wiring) |

Key Product Features
- ⚡ Advanced Distance Protection: Features multi-zone phase and ground distance elements with high-speed tripping characteristics.
- 🛡️ Fault Analysis: Includes integrated event recording and oscillographic data logging to facilitate rapid post-fault investigation.
- 🌐 Integration Capability: Designed for compatibility with ABB substation automation systems and modern communication protocols for remote relay settings.
- 🧩 Flexibility: Configurable logic allows the relay to be adapted to various line configurations, including multi-terminal lines.
- 📈 Reliability: Built-in self-monitoring functions continuously verify the health of the hardware and software, alerting operators to potential failures before they occur.

Recommended Series Models (Related ABB Protection Relays)
To ensure a cohesive protection strategy, these models are frequently utilized within the same or similar high-voltage substations:
- REL316*3: Previous generation numerical line protection
- REL511: Numerical line distance protection
- REL521: Advanced line distance protection
- REL531: Line distance and directional comparison protection
- RET521: Transformer protection relay
- RED521: Line differential protection relay
- REB500: Busbar protection system
- REC523: Bay control unit
- REU523: Voltage protection relay
- REF542plus: Integrated protection and control terminal

