ABB REF610 Feeder Protection Relay

ABB REF610 Feeder Protection Relay

product overview

Purpose: REF610 is a multifunctional feeder protection relay mainly used for incoming and outgoing line protection in medium voltage distribution substations. It can also be used as backup protection for motors, transformers, and generators, and is suitable for industrial and utility applications.

Core functions: It has multiple protection functions such as overcurrent protection, ground fault protection, thermal protection, phase failure protection, circuit breaker failure protection, arc protection, automatic reclosing, etc. It supports real-time data monitoring, fault recording, and communication functions.

Technical Characteristics

Protection function:

Overcurrent protection: includes low setting stage (I>), high setting stage (I>>), and instantaneous stage (I>>>), supports definite time and inverse time (IDMT) characteristics, and can adapt to different fault scenarios.

Ground fault protection: Non directional, divided into low setting value (I0>) and high setting value (I0>>) stages, supporting IDMT characteristics.

Thermal protection: Simulate cable thermal overload and achieve overload warning and tripping by calculating the thermal capacity (θ>).

Arc protection: Detecting arcs through optional light sensors, supporting single relay or multi relay linkage, and quickly tripping.

Automatic Recloser (AR): Supports 1-3 reclosures and can be configured with different dead time and reclosing sequences.

Measurement and Communication:

It can measure parameters such as three-phase current, grounding current, and phase imbalance with an accuracy of ± 3%.

Supports multiple communication protocols, including SPA bus IEC 60870-5-103、Modbus RTU/ASCII、DNP 3.0， Supports fiber optic or RS-485 interfaces.

Hardware and Interface:

Input/Output: 4 current inputs (supporting 1A/5A rated current), 2-5 digital inputs, 3 power outputs (PO), and 2-5 signal outputs (SO).

Communication module: Optional plastic fiber optic, glass fiber optic, RS-485 and other modules, supporting arc protection input.

Human Machine Interface (HMI): Equipped with an LCD display and navigation buttons, supporting multilingual password protection.

Specification parameters

rated voltage

Auxiliary voltage: AC 100-240V or DC 24-250V (different models are optional)

Rated current

Phase current: 1A or 5A; Grounding current: 0.2A/1A/5A (optional)

Working temperature: -10 ° C to+55 ° C (long-term), short-term can reach -40 ° C to+70 ° C

Protection level: Front IP54, Rear IP20

Communication speed

SPA/Modbus：9.6/4.8 kbps； IEC 103：9.6 kbps

Dimensions and Weight: Width 177mm, Height 177mm, Depth 149.3mm; Weight Approximately 3.5kg

Application scenarios

Power system: feeder protection for medium voltage distribution substations, including incoming, outgoing, and busbar protection.

Industrial automation: Overload and fault protection for motors, transformers, and generators, suitable for fields such as chemical, steel, and manufacturing.

Arc protection scenario: Arc detection and rapid tripping in air insulated metal armored switchgear to ensure the safety of personnel and equipment.

Smart grid: supports remote monitoring and communication, and can be integrated into substation automation systems (SCADA).

Installation and maintenance

Installation method: Supports semi embedded, wall mounted, or 19 inch rack installation, ensuring good ventilation and electromagnetic compatibility.

Maintenance points:

Regularly check the input/output wiring and communication module status.

Perform preventive maintenance (such as battery replacement and functional testing) every 5 years.

Configure parameters and read fault records through HMI or dedicated software (Relay Setting Tool).

Ordering Information

Model example: REF610C55HCNP01 (including RS-485 communication module, 5A phase current input, English interface).

Optional accessories: fiber optic communication module, arc light sensor, installation kit, front communication cable, etc.

Safety and Compliance

Certification: Compliant with IEC 60255, EN 55011, EMC 2004/108/EC and other standards, passed tests such as dielectric, surge, EMC, etc.

Safety Warning: Internal high voltage danger, requires installation by professional electricians to ensure reliable grounding and avoid static electricity damage to components.