The ABB REM620 is a relay used in electrical systems for protection, control, and monitoring.

### Product Name

**ABB REM620**

### Product Description

The ABB REM620 is a multifunctional protection relay designed for use in medium voltage electrical networks. It offers comprehensive protection, control, and monitoring functions for transformers, generators, and feeders. The relay is part of ABB’s Relion® product family, known for its reliability and advanced technology.

### Product Parameters and Specifications

– **Protection Functions:**
– Overcurrent protection (IDMT, definite time)
– Earth fault protection (IDMT, definite time)
– Breaker failure protection
– Thermal overload protection
– Directional protection
– Voltage protection
– **Control Functions:**
– Auto-reclose
– Synchronization
– Load shedding
– **Monitoring and Diagnostics:**
– Event recording
– Disturbance recording
– Real-time and historical data
– **Communication:**
– Supports standard communication protocols such as IEC 61850, DNP3, and Modbus.
– Includes options for Ethernet, serial communication, and optical links.
– **Hardware:**
– Digital inputs and outputs
– Analog inputs for monitoring system parameters
– LCD display for local interface
– User-friendly interface with graphical configuration tools
– **Power Supply:**
– Wide voltage range to support different power supply scenarios
– **Mounting and Enclosure:**
– Designed for panel mounting with robust enclosure to withstand harsh environments
– **Operating Conditions:**
– Temperature range: typically from -20°C to +60°C
– Humidity: up to 95% relative humidity (non-condensing)

### Product Use

The ABB REM620 is used primarily in medium voltage substations and industrial facilities to protect and control electrical equipment. It is suitable for:

– **Transformers:** Protecting against overloads, short circuits, and earth faults.
– **Generators:** Providing protection during startup, operation, and shutdown phases.
– **Feeders:** Ensuring reliable operation and fault isolation for distribution networks.

The relay’s comprehensive protection capabilities make it a crucial component in maintaining the safety, reliability, and efficiency of electrical systems. It helps in reducing downtime, minimizing equipment damage, and ensuring operational continuity.