ABB – SVRR (CM‑UFD.MM) – Grid‑Feeding Monitoring Relay with Modbus

Device Type: Multifunctional grid feed monitoring relay designed to manage safe connection/disconnection of renewable energy systems to public grid  

Power Supply: – V AC/DC, suitable for various installation types  

Measurement Range:

• Phase-to-phase voltage: – VAC

• Phase-to-neutral voltage: – VAC  

Monitoring Functions:

• Over/undervoltage

• Over/underfrequency

• Rate of change of frequency (ROCOF)

• Vector shift detection

• Neutral interruption protection  

Outputs:  change‑over (SPDT) relay contacts for controlling breakers or disconnectors  

Communication: Serial Modbus RTU for remote setup, monitoring and integration with ABB Ability and SCADA systems  

Standards Compliance:

• VDE‑AR‑N / / certified (Germany)

• TÜV‑tested for grid stability applications  

Interface: Backlit LCD with intuitive menu and navigation buttons for onsite configuration and diagnostics  

Form Factor: Compact DIN‑rail ( ×  ×  mm) with screw terminal connections