ABB REX615 Feeder Protection and Control Relay

• Brand
  ABB
• Model
  REX615
• Product Name
  Feeder Protection and Control Relay / Numerical Protection Relay
• Country of Origin
  Finland
• HS Code
  85364900
• Dimensions
  177mm(Height)×177mm(Width)×200mm(Depth)
• Weight
  4.1 kg
• Operating Temperature
  -25°C to +55°C
• Storage Temperature
  -40°C to +85°C
• Power Supply
  24VDC
• Warranty
  12 month
• Product Status
  New and original

ABB REX615 Technical Specifications & Profile

Inputs & Outputs (I/O Configuration)

Analog Inputs: Supports standard current transformers (CTs) and voltage transformers (VTs), or advanced sensor inputs (Rogowski coils and voltage dividers) for current and voltage measurement.

Binary Inputs: Customizable digital inputs used for external signaling, interlocking, and control commands, typically rated for 24–250 V DC or 48–250 V AC.

Binary Outputs: High-speed power outputs for circuit breaker tripping, signaling outputs, and dedicated watchdog (IRF) contacts.

ABB REX615 Wiring & Connection Methodology

The REX615 utilizes a secure, modular rear terminal blocks system for physical wiring, categorized into specific functional zones:

Compression-Type Terminals: Heavy-duty screw or ring-lug terminals are used for the analog current and voltage inputs to ensure low contact resistance and prevent accidental open-circuits on live CT secondaries.

Detachable Screw Terminals: Used for low-voltage binary inputs, binary outputs, and power supply wiring to facilitate quick disconnection.

Communication Ports: Features standard RJ-45 or fiber-optic (LC/ST) connectors on the rear (and an RJ-45 on the front panel for local engineering access) supporting Ethernet-based protocols, as well as serial ports (RS-485) for legacy systems.

ABB REX615 Key Advantages

Compact Plug-in Design: Features a draw-out design that allows rapid installation, testing, and replacement, significantly minimizing maintenance downtime.

Native IEC 61850 Compliance: Fully supports horizontal GOOSE messaging and vertical manufacturing message specification (MMS) communication, ensuring seamless interoperability in smart grids.

Extensive Protection Palette: Offers comprehensive protection functionality, including overcurrent, earth-fault, over/undervoltage, and frequency protection, adapted for various earthing networks.

High Reliability & Safety: Built with integrated arc flash protection options to enhance personnel safety and protect equipment from catastrophic faults.

Future-Proof Flexibility: Easily configurable via ABB’s PCM600 tool, allowing adaptation to changing grid requirements over time.

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  ABB REX615
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