ABB RXDS 4 1MRK000344-A

Description

Detailed Parameter Table

ABB RXDS 4 1MRK000344-A

Product Introduction

The ABB RXDS 4 1MRK000344-A stands as a versatile and robust numerical protection relay, forming a critical component within ABB’s renowned Reyrolle product line. Designed for medium-voltage (MV) and high-voltage (HV) electrical networks, this relay provides comprehensive primary and backup protection for feeders, motors, transformers, and capacitor banks. Its core function is to continuously monitor electrical parameters (current, voltage, frequency) and instantly initiate breaker tripping upon detecting abnormal conditions like overcurrent, earth faults, or voltage deviations, safeguarding personnel and equipment from damage.

As part of the advanced RXDS 4 series, the 1MRK000344-A model integrates multiple protection functions into a single, compact unit, significantly simplifying panel design and reducing wiring complexity compared to traditional electromechanical relays. Technically positioned as a multifunctional feeder management relay, it excels in both utility substations and demanding industrial power distribution systems. The intrinsic value of the ABB RXDS 4 1MRK000344-A lies in its ability to enhance electrical system reliability, minimize downtime, provide critical event data for analysis, and support modern communication protocols for seamless integration into supervisory control and data acquisition (SCADA) or Distributed Control Systems (DCS). Its modular design also allows for future functional expansion.

Core Advantages and Technical Highlights

The ABB RXDS 4 1MRK000344-A delivers significant operational benefits through its advanced engineering and feature set:

Uncompromising Reliability and Robustness: Built to ABB’s stringent standards for power system protection, the relay features a hardened hardware design capable of withstanding harsh electrical environments (high EMI, surges) and extreme temperatures. Its high Mean Time Between Failures (MTBF) and compliance with critical standards like IEEE C37.90 ensure dependable operation year after year, crucial for mission-critical power infrastructure.

Advanced Protection & Measurement: This specific variant offers a rich suite of protection functions, including highly sensitive directional earth fault protection and thermal overload protection with thermal replica modeling. Its high-accuracy measurement capability (typically Class 0.5 for current, Class 0.2 for voltage) provides operators with precise real-time data for monitoring power quality and load behavior. Optional arc flash detection provides an additional layer of personnel safety.

Powerful Communication and Cybersecurity: The RXDS 4 1MRK000344-A is a cornerstone of the digital substation. Native support for IEC 61850 (MMS for reporting, GOOSE for peer-to-peer high-speed tripping/messaging) and Modbus enables seamless integration into modern automation architectures. Robust cybersecurity features, including password protection, role-based access control, and secure communication protocols (like encrypted IEC 61850), are integral, aligning with IEC 62443 standards to protect against cyber threats.

Enhanced Usability and Diagnostics: Featuring a large, clear graphical LCD display and intuitive menu navigation, the relay simplifies local configuration and operation. Comprehensive event recording (up to 1024 events with timestamps), detailed disturbance records (fault oscillography), and extensive self-diagnostic capabilities make fault analysis and troubleshooting significantly faster, reducing Mean Time To Repair (MTTR). Tools like ABB’s PCM600 and Protection and Control IED Manager (PCIM) streamline engineering, setting, and asset management.

Typical Application Scenarios

The versatility and robustness of the ABB RXDS 4 1MRK000344-A make it ideal for a wide spectrum of electrical protection applications:

Utility Substations (HV/MV): Serving as the primary protection relay for incoming feeders, bus couplers, and outgoing distribution feeders in substations. Its directional overcurrent and earth fault capabilities are essential for selective tripping in meshed networks, ensuring fault isolation with minimal disruption. IEC 61850 GOOSE support allows for fast, reliable inter-tripping schemes without additional wiring. The RXDS 4 1MRK000344-A provides vital data for SCADA systems via MMS or Modbus TCP.

Industrial Power Distribution: Protecting critical feeders, motors, transformers, and capacitor banks within factories, refineries, mines, and large commercial facilities. The thermal overload function is particularly valuable for motor protection, preventing damage from locked rotor conditions or excessive starts. Its robust design ensures reliable operation in electrically noisy industrial environments. The ABB RXDS 4 1MRK000344-A integrates seamlessly with plant DCS or PLC systems for centralized monitoring and control.

Renewable Energy Integration: Protecting feeders and connection points in solar farms and wind parks. Functions like over/under frequency and over/under voltage are critical for ensuring compliance with grid codes during generation fluctuations. The 1MRK000344-A relays monitor the interface between the renewable source and the main grid, providing protection and valuable operational data.

Infrastructure Projects: Essential for protection in airports, hospitals, data centers, and rail traction power supplies where high availability and rapid fault clearance are paramount. The optional arc flash detection capability adds a critical safety layer in areas where personnel may be present near switchgear.

Related Model Recommendations

REF615: ABB’s dedicated feeder protection relay within the Relion® 615 series, offering similar core protection functions (OC/EF) in a different form factor and platform, often used as a direct alternative or complementary device.

REC615: A bay controller within the Relion® 615 series, often used alongside protection relays like the RXDS 4 or REF615 for control, automation, and measurement functions, providing a complete bay solution.

REX521: A protection relay focused on motor and generator protection within the Relion® 600 series, complementing the RXDS 4 1MRK000344-A where specialized motor protection is needed.

REx5xx series (e.g., RET615): Other relays in the Reyrolle REx5xx platform, sharing similar hardware platforms, communication capabilities, and engineering tools (PCM600), ensuring compatibility and simplified system design.

SDCS-PIN-24: A typical matching binary input module used within the same rack/case system as the RXDS 4 for expanding binary input capacity.

SDCS-CON-4: A control module providing additional binary outputs, often used in conjunction with the ABB RXDS 4 1MRK000344-A.

1MRK000344-B / 1MRK000344-C: Variants of the same RXDS 4 relay platform, potentially differing in pre-configured functions, communication options (e.g., inclusion of DNP3), or arc flash detection inclusion. Always check suffix.

SMT Test Kit: ABB’s Secondary Test Kit, specifically designed for efficient testing and commissioning of relays like the RXDS 4.

ABB RXDS 4 1MRK000344-A

Installation, Commissioning and Maintenance Instructions

Installation Preparation: Ensure the environment meets specified temperature, humidity, and pollution degree requirements. Verify the mounting structure (rack or panel) is secure and provides adequate ventilation. Have appropriate tools ready: screwdrivers (insulated), wire strippers, crimping tools, multimeter, torque wrench (for terminal screws). Crucially, ensure the power supply (DC/AC) to the relay and all connected current/voltage transformer circuits are securely isolated before starting any wiring work. Carefully review the wiring diagrams and terminal assignments specific to the ABB RXDS 4 1MRK000344-A in its manual. Use correctly sized and rated cables for power, inputs, outputs, and communication.

Maintenance Suggestions: Perform regular visual inspections for signs of damage, overheating, or contamination. Keep ventilation slots clear. Periodically verify the relay’s self-diagnostics via the front panel or communication interface. Ensure the real-time clock is accurate for precise event time-stamping. Regularly back up relay configuration settings using PCM600. Check binary input health and contact status of output relays. Monitor operational counters for output relays nearing their specified mechanical/electrical endurance limits. Firmware updates for the RXDS 4 1MRK000344-A should be performed during planned outages following ABB procedures using PCM600. Maintain a critical spare, especially for non-redundant applications.

Service and Guarantee Commitment

ABB stands firmly behind the quality and performance of the RXDS 4 1MRK000344-A relay. The product is covered by ABB’s standard global warranty, typically 24 months from the date of shipment, covering defects in materials and workmanship under normal use and service conditions. ABB provides comprehensive technical support through its global network of local service centers and technical specialists, offering assistance with installation, configuration, troubleshooting, and application engineering. Customers have access to extensive documentation, including detailed manuals, application guides, and technical notes via the ABB website. Software tools like PCM600 and firmware updates are readily available. ABB is committed to long-term product support and lifecycle management, ensuring the availability of spare parts and technical expertise for the operational lifetime of the ABB RXDS 4 1MRK000344-A. For critical issues, ABB offers 24/7 emergency support services to minimize downtime and ensure the continued reliability of your electrical protection system.