ABB REU610 Intelligent Electronic Device

Product Description

ABB REU610 is a multi-function voltage protection IED in the Relion® 610 series. It was discontinued in 2017 and designed for voltage supervision, protection and control in medium-voltage distribution networks. It adopts a pluggable withdrawable design for easy commissioning and quick replacement in switchgear. It integrates two-stage overvoltage, two-stage undervoltage, two-stage residual overvoltage protection, plus optional single-stage negative-sequence overvoltage (mutually exclusive). It also includes measurement, disturbance recording and event logging, programmable DI/DO and serial communication, widely used for busbar, capacitor bank, motor and transformer voltage fault protectionABB Group.

Specifications

• Part Number: REU610
• Product Family: Relion® 610 series
• Lifecycle Status: Discontinued (Legacy product)
• Protection Functions: 2-stage overvoltage (59), 2-stage undervoltage (27), 2-stage residual overvoltage (59N), single-stage negative-sequence overvoltage (47, mutually exclusive with residual extension)
• Disturbance Recorder: Max. recording time 80 seconds
• Standard Digital Inputs: 2 galvanically isolated DI; optional I/O module adds 3 extra DI
• Standard Output Contacts: 3 NO trip contacts; 2 Form-C non-trip contacts; optional module adds another 3 Form-C contacts
• HMI: 2×16 character LCD, keypad, status LEDs
• Communication: Front infrared port, serial communication (DNP3); native IEC61850 not supported
• Construction: Pluggable withdrawable unit, switchgear panel mounting
• Application Voltage Level: Medium voltage (MV) distribution system
• Configuration Software: ABB PCM600

Application

1. Busbar overvoltage, undervoltage and residual voltage supervision for distribution substations
2. Voltage protection and supervision for MV capacitor banks
3. Motor undervoltage protection and distribution transformer overvoltage protection
4. Non-directional earth fault detection based on residual voltage in isolated neutral systems
5. Trigger for automatic busbar transfer, islanding detection and disconnection of distributed generation
6. Retrofit & spare part replacement for MV switchgears in industrial, petrochemical, water and mining plants

Related Series Part Numbers

• REF610: Feeder protection relay (Relion 610 series)
• REM610: Motor protection relay (Relion 610 series)
• REU611: Upgraded voltage protection relay in the same family
• REX615: New generation replacement IED for REF610 / REM610 / REU610 retrofit, with IEC61850 support