REM543 ABB Central control module

Description

REM543 ABB Central control module

Product Dimensions：

Product Description

The REM543 is a microprocessor-based relay designed to provide comprehensive protection and control for medium-voltage electric motors, generators, and distribution feeders. It operates as the key control and measurement node within a substation or industrial plant’s electrical network.

1. Integrated Functions: It consolidates functions traditionally handled by multiple discrete devices (like separate overcurrent relays, voltage relays, and control switches) into one modular unit.

2. Protection: It performs complex calculations based on measured current and voltage signals to detect faults (e.g., short circuits, overloads, earth faults, phase unbalance) and trip the corresponding circuit breaker via its output relays.

3. Control: It provides integrated local and remote control capabilities for circuit breakers, disconnectors, and earth switches.

4. Monitoring & Metering: It continuously monitors and records electrical parameters (voltage, current, power, energy, frequency), logging events and fault data (like COMTRADE format for fault recording).

5. Communication: It supports various communication protocols (e.g., IEC 61850, Modbus, DNP3) to communicate with higher-level substation automation or SCADA systems.

Product Specifications

The REM543 is a highly configurable device, but key performance specifications are:

Product Advantages

• Integrated Protection and Control: Reduces the need for separate devices, simplifying panel design, reducing wiring, and lowering overall installation costs.

• High-Speed Fault Clearance: With high-frequency sampling (up to $2.4kHz$), it provides accurate measurement and fast processing, ensuring rapid fault detection and isolation.

• Advanced Diagnostics: Extensive event logs, disturbance recordings (COMTRADE format), and monitoring features allow for quick root-cause analysis of electrical faults.

• Scalable and Modular: The REM543 is part of a modular family, allowing users to customize the number of analog inputs, binary I/Os, and communication ports to suit specific application needs.

• Substation Automation Readiness: Full support for modern protocols like IEC 61850 enables seamless integration into modern substation and plant automation networks.

Precautions

• CT/VT Connection: Accurate protection relies on correct scaling and polarity of the connection to Current Transformers (CTs) and Voltage Transformers (VTs). Incorrect wiring can lead to non-operation or false trips.

• Settings Management: The protection settings (e.g., time curves, thresholds) must be calculated and configured by protection engineers based on the specific power system network study. Incorrect settings can cause misoperation.

• Firmware and Software: Use only manufacturer-approved software (e.g., ABB’s CAP 540) for configuration and parameter setting, and ensure the firmware is up-to-date.

• Environmental Stability: While robust, the unit should be installed in a clean, dry panel environment with operating temperatures within the specified limits.

• Testing: Thorough secondary injection testing must be performed after installation and any setting changes to confirm all protection functions operate correctly before commissioning the circuit.

Product Applications

The REM543 is a staple in high-reliability power systems:

• Motor Protection: Providing comprehensive thermal, overload, and short-circuit protection for critical large or medium-voltage motors (e.g., pumps, compressors, crushers).

• Distribution Feeder Protection: Used to protect outgoing and incoming medium-voltage distribution lines in substations and industrial switchgear.

• Generator Protection: Providing essential protection functions (like overcurrent, voltage, and frequency) for small to medium-sized generators.

• Substation Control and Monitoring: Acting as the bay control unit (BCU) responsible for controlling the local circuit breaker and providing data acquisition to the main SCADA system.

• Industrial Plants: Essential for managing power distribution and ensuring the reliability of large industrial loads in process plants, mining, and oil and gas facilities.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Please make an inquiry for more models：