ABB | REF611 | Feeder Protection and Control
Overview
The REF611 is a feeder relay for protection, control, measurement, and supervision of utility substations and industrial power systems. It supports radial, looped, and meshed networks, with or without distributed power generation. As part of ABB’s Relion® product family, it features a compact design and withdrawable-unit construction.
Physical Hardware
Main Unit Slot ID Options:
-
Plug-in Unit
HMI: 4 lines, 16 characters -
X100 Auxiliary Power/BO Module
Input: 48...250 V DC / 100...240 V AC; or 24...60 V DC
Outputs: 2 normally-open PO contacts, 1 change-over SO contact, 1 normally-open SO contact, 2 double-pole PO contacts with TCS, 1 internal fault contact -
X120 AI/BI Module
- Configuration A: 3-phase current inputs (1/5 A), 1 residual current input (1/5 A or 0.2/1 A), 1 residual voltage input (60...120 V), 3 binary inputs
- Configurations B & C: 3-phase current inputs (1/5 A), 1 residual current input (1/5 A or 0.2/1 A), 4 binary inputs
-
X130 Optional BI/O Module
- Configuration B & C: 6 binary inputs, 3 SO contacts
-
AI/BI Module (Configuration C only)
3-phase voltage inputs (60...210 V), 1 residual voltage input (60...210 V), 4 binary inputs -
X000 Optional Communication Module
Details available in the technical manual
LEDs
- Protection Indicators: Ready, Start, Trip (above the display)
- Programmable LEDs: 8 total, configurable via LHMI, WHMI, or PCM600
Keypad
-
Push Buttons:
- Navigate views and menus
- Control primary circuit objects (circuit breakers, contactors, disconnectors)
- Acknowledge alarms, reset indications, and switch between local/remote modes
ABB | REF611 | Feeder Protection and Control
ABB | REF611 | Feeder Protection and Control
Overview
The REF611 is a feeder relay for protection, control, measurement, and supervision of utility substations and industrial power systems. It supports radial, looped, and meshed networks, with or without distributed power generation. As part of ABB’s Relion® product family, it features a compact design and withdrawable-unit construction.
Physical Hardware
Main Unit Slot ID Options:
-
Plug-in Unit
HMI: 4 lines, 16 characters -
X100 Auxiliary Power/BO Module
Input: 48...250 V DC / 100...240 V AC; or 24...60 V DC
Outputs: 2 normally-open PO contacts, 1 change-over SO contact, 1 normally-open SO contact, 2 double-pole PO contacts with TCS, 1 internal fault contact -
X120 AI/BI Module
- Configuration A: 3-phase current inputs (1/5 A), 1 residual current input (1/5 A or 0.2/1 A), 1 residual voltage input (60...120 V), 3 binary inputs
- Configurations B & C: 3-phase current inputs (1/5 A), 1 residual current input (1/5 A or 0.2/1 A), 4 binary inputs
-
X130 Optional BI/O Module
- Configuration B & C: 6 binary inputs, 3 SO contacts
-
AI/BI Module (Configuration C only)
3-phase voltage inputs (60...210 V), 1 residual voltage input (60...210 V), 4 binary inputs -
X000 Optional Communication Module
Details available in the technical manual
LEDs
- Protection Indicators: Ready, Start, Trip (above the display)
- Programmable LEDs: 8 total, configurable via LHMI, WHMI, or PCM600
Keypad
-
Push Buttons:
- Navigate views and menus
- Control primary circuit objects (circuit breakers, contactors, disconnectors)
- Acknowledge alarms, reset indications, and switch between local/remote modes