ABB RET650 Transformer Protection Intelligent Electronic Device

The ABB RET650 is a high-performance transformer protection IED, part of ABB’s advanced Relion® 650 series. Designed specifically for the protection, control, and monitoring of power transformers and reactors, the RET650 delivers accurate, fast, and reliable protection even in the most demanding industrial and utility environments.

Key Features & Benefits

• Advanced Transformer Protection
  Offers a complete suite of transformer-specific protection features to ensure safe and efficient operation.

• Flexible Voltage Support
  Capable of handling a wide range of voltage levels, making it suitable for various transformer configurations.

• Fully IEC 61850 Compliant
  Seamless integration into modern digital substations and smart grid environments.

Protection Functions

The RET650 includes a comprehensive set of protection features:

• Transformer Differential Protection
  Detects internal faults in transformer windings with high sensitivity.

• Restricted Earth Fault Protection
  Provides localized detection of earth faults within the transformer.

• Overcurrent & Thermal Overload Protection
  Protects the transformer from overloading, excessive current, and overheating.

• Voltage & Frequency Protection
  Maintains system stability by monitoring and reacting to abnormal voltage and frequency conditions.

Communication Capabilities

The RET650 supports multiple communication protocols for integration into various control and SCADA systems:

• IEC 61850

• Modbus

• DNP3

• Additional protocols supported for broad interoperability.

Human-Machine Interface (HMI)

• Dynamic Three-Color LEDs
  Clearly indicate operating status, alarms, and faults.

• Configurable Push-Button Shortcuts
  Customizable interface to streamline operator interaction and control tasks.

Environmental Conditions

• Operating Temperature Range: –25°C to +55°C

• Storage Temperature Range: –40°C to +85°C