Description
Product Overview
The ABB LDSTA-01 is a high-performance Line Differential Protection Relay designed to safeguard medium and high-voltage power systems with precision and reliability. As part of ABB’s advanced protection and control portfolio, the LDSTA-01 is engineered to detect and isolate faults in transmission and distribution lines swiftly, minimizing downtime and ensuring grid stability. This relay combines advanced digital signal processing with robust hardware to deliver fast tripping times and immunity to external disturbances, making it an ideal solution for critical power infrastructure.
The LDSTA-01 leverages ABB’s decades of expertise in power system protection, offering a compact design without compromising on functionality. It supports both voltage and current differential protection schemes, enabling accurate fault discrimination between internal and external faults. The relay’s modular architecture allows for easy integration into existing substation automation systems, while its user-friendly interface simplifies configuration and maintenance. By ensuring reliable protection against phase-to-phase, phase-to-ground, and inter-turn faults, the LDSTA-01 plays a pivotal role in enhancing the security and efficiency of modern power grids.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | LDSTA-01 |
| Manufacturer | ABB |
| Product Type | Line Differential Protection Relay |
| Rated Voltage | 100–240 V AC/DC (wide operating range) |
| Current Input Range | 1 A or 5 A (selectable) |
| Communication Protocols | IEC 61850, Modbus RTU/TCP, DNP3 |
| Trip Time | <20 ms (for internal faults) |
| Operating Temperature | -25°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Dimensions (W×H×D) | 177 mm × 210 mm × 240 mm |
| Protection Functions | Differential protection, overcurrent protection, distance protection (optional) |
| Self-Test Features | Built-in hardware and software diagnostics |
| Certification | IEC 61000-4, IEC 61850-3, IEEE 1613 |
LDSTA-01
Main Features and Advantages
Reliable Fault Detection: The LDSTA-01 employs advanced differential protection algorithms to distinguish between normal load currents and fault conditions, reducing the risk of unnecessary tripping. Its high-speed sampling (up to 24 samples per cycle) ensures accurate measurement of electrical parameters, even in high-frequency transient scenarios.
Flexible Integration: Designed for interoperability, the relay supports multiple communication protocols, enabling seamless integration with substation SCADA systems and other intelligent electronic devices (IEDs). Its IEC 61850 compliance facilitates seamless data exchange in modern digital substations, enhancing system-wide coordination.
Robust Design: Built to withstand harsh industrial environments, the LDSTA-01 features reinforced electromagnetic compatibility (EMC) and shock/vibration resistance. The relay’s modular design allows for easy replacement of components, minimizing maintenance downtime. Its wide operating temperature range ensures reliable performance in diverse climatic conditions.
User-Centric Interface: The relay includes a graphical LCD display and intuitive menu navigation for on-site configuration and troubleshooting. Remote monitoring and control capabilities via Ethernet or serial interfaces enable proactive maintenance and real-time fault analysis, reducing operational costs.
Application Field
The ABB LDSTA-01 is ideally suited for protecting transmission lines, distribution feeders, and power transformer connections in utility, industrial, and renewable energy applications. In utility grids, it ensures rapid fault clearance in medium-voltage ring networks and radial systems, maintaining supply continuity for end-users. In industrial settings, such as oil and gas plants or mining facilities, the relay safeguards critical power infrastructure against faults that could disrupt production processes.
For renewable energy installations, such as wind farms or solar plants, the LDSTA-01 plays a vital role in protecting interconnection lines and ensuring grid compliance. Its ability to handle complex fault scenarios, including high-resistance ground faults, makes it suitable for modern power systems with distributed energy resources (DERs). The relay’s adaptability also extends to urban distribution networks, where it supports smart grid initiatives by enabling real-time monitoring and adaptive protection schemes.
LDSTA-01
Related Products
- ABB REF615E: A multifunctional protection relay for power systems, offering advanced protection, control, and measurement capabilities for transformers, lines, and motors.
- ABB REC670: A numerical relay designed for distribution networks, providing overcurrent, earth fault, and distance protection with integrated communication features.
- ABB LRE670: A line protection relay optimized for medium-voltage systems, combining high-speed protection with advanced fault recording and event logging.
- ABB SAM100: A compact protection and control unit for low-voltage applications, suitable for motor protection and system supervision.
- ABB PR123/P: A circuit breaker protection and control unit, enhancing the reliability of medium-voltage switchgear in industrial and utility settings.
Installation and Maintenance
Pre-installation preparation: Ensure the mounting panel is grounded and free of electromagnetic interference sources. Verify that the supply voltage matches the LDSTA-01’s rated voltage (100–240 V AC/DC). Use shielded cables for current and voltage inputs to minimize noise pickup. Configure communication parameters (IP address, baud rate) via the front-panel interface or ABB’s Relion® PC Tool software before mounting.
Maintenance recommendations: Perform annual visual inspections to check for loose connections or physical damage. Use the relay’s built-in self-test function to verify hardware integrity and firmware compatibility. Regularly update the firmware to incorporate the latest security patches and performance improvements. For fault events, download and analyze the event logs to identify root causes and optimize protection settings. Schedule periodic functional tests using a secondary injection test set to ensure the relay’s tripping accuracy and response time meet system requirements.
Product Guarantee
ABB stands behind the LDSTA-01 with a comprehensive quality assurance program, including rigorous testing at every stage of production. The product is backed by a standard warranty covering defects in materials and workmanship for a period of [X years]. ABB’s global service network provides 24/7 technical support, ensuring prompt assistance for installation, configuration, and troubleshooting. Customers can access dedicated training programs to maximize the relay’s capabilities and benefit from proactive maintenance services to extend product lifecycle. ABB is committed to delivering reliable, future-proof solutions that meet the evolving needs of power system protection, ensuring peace of mind for operators worldwide.
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