Description
ABB REC650 (1MRK008514-BB) — Bay Control & Protection Relay
Product: REC650, Bay Control Unit / Protection Relay
Order Code: 1MRK008514-BB
Manufacturer: ABB
Primary Application: A numerical bay control and protection relay designed for the protection, control, and monitoring of feeders, overhead lines, and cables in medium and high-voltage substations. It serves as an integrated Bay Control Unit (BCU) and protection device, particularly suited for distribution and sub-transmission networks.
1. Core Overview & Positioning
The ABB REC650 is a key member of the Relion® 650 series. Unlike more specialized protection relays (like the REG670 for lines or the RET650 for transformers), the REC650 emphasizes a balance between robust protection functions and comprehensive bay-level control and automation capabilities. The suffix «1MRK008514-BB» defines its exact hardware configuration, communication options, and I/O package.
Key Philosophy: It consolidates the functions of traditional protection relays, bay controllers, and measurement devices into a single, compact unit. This simplifies substation design, reduces wiring, and enables advanced local automation for a complete feeder or bay.
2. Key Protection & Control Functions
-
Feeder & Line Protection:
-
Distance Protection (21): Multi-zone, phase and earth-fault distance protection as the primary scheme for lines.
-
Directional/Non-Directional Overcurrent Protection (50, 51, 67): For backup and feeder protection.
-
Auto-Reclosing (79): Programmable single- or three-phase reclosing schemes.
-
Sensitive Directional Earth-Fault Protection (67N).
-
-
Bay Control & Automation:
-
Circuit Breaker Control: Full local and remote control (open/close) with sophisticated interlocking logic.
-
Disconnector & Earthing Switch Control: Can be extended to control the entire bay’s primary apparatus.
-
Programmable Logic (CFC): Powerful Configurable Function Charts editor to create custom automation sequences, interlocking, and condition-based controls without an external PLC.
-
Synchrocheck (25): For safe synchronization of two sources.
-
-
Monitoring & Metering:
-
Comprehensive measurement of all electrical parameters (V, I, P, Q, S, PF, frequency, harmonics, energy).
-
Extensive event logging, disturbance recording, and condition monitoring.
-
3. Model Number Breakdown & Specifications
Typical Technical Specifications:
-
Rated Current: 1A or 5A (via CTs).
-
Rated Voltage: Up to 300V AC L-L (via VTs).
-
Auxiliary Supply: Wide range, typically 24-48/60V DC or 110-230V DC/AC.
-
Communication:
-
Front: USB port for local PC connection.
-
Rear: Multiple Ethernet ports for IEC 61850-8-1 (MMS/GOOSE), DNP3.0 over TCP/IP, Modbus TCP. Serial ports for IEC 60870-5-103 or Modbus RTU.
-
-
Binary I/O: Configurable number of opto-isolated inputs and relay outputs.
-
Housing: Compact, modular case for panel mounting (often 4U high for a 19″ rack).
4. System Integration & Architecture
-
Role in Substation: It acts as the primary Intelligent Electronic Device (IED) for a specific feeder bay, handling all protection, control, and data acquisition locally.
-
Engineering Tool: Fully configured using ABB’s PCM600 engineering suite. The entire application—protection settings, control logic (CFC), communication mapping, and HMI screens—is designed here.
-
Communication: A central node in modern substation architecture:
-
Station Level: Communicates with the SCADA/Control Center via IEC 61850 MMS or DNP3.0, reporting status, measurements, and alarms.
-
Bay Level: Exchanges GOOSE messages with other IEDs in the substation for fast, peer-to-peer interlocking and protection signaling (e.g., busbar blocking).
-
Process Level: Can interface with merging units via IEC 61850-9-2 LE sampled values in a digital substation.
-
-
Wiring: Connects directly to Current Transformers (CTs), Voltage Transformers (VTs), circuit breaker trip/close coils, and disconnector motor operators.
5. Typical Applications
-
Distribution Feeder Protection & Control: Primary protection and control for 6-36 kV outgoing feeders in industrial plants or utility substations.
-
Sub-transmission Line Protection: For 33-132 kV overhead lines or cables.
-
REC670 is typically used for longer, more critical transmission lines, while REC650 is suited for shorter sub-transmission and distribution lines.
-
-
Bay Controller in Air-Insulated Switchgear (AIS): Controlling and protecting a complete bay including circuit breaker, disconnectors, and earthing switches.
-
Renewable Plant Connection: Protection and control of the connection feeder for a solar or wind farm to the main grid.
Reviews
There are no reviews yet.