ABB REM620C-F

Description

Technical Parameters ABB REM620C-F

Product Advantages and Features ABB REM620C-F

1. Multi-Layered Protection Algorithms, Ensuring High-Voltage System Safety

   ABB REM620C-F is equipped with a full suite of protection functions optimized for high-voltage power equipment, including distance protection for transmission lines and differential protection for transformers. Its adaptive protection algorithm can automatically adjust the protection threshold according to the system operating mode, accurately distinguishing between normal load fluctuations and fault signals, and avoiding unnecessary power outages while ensuring rapid fault isolation.

2. Ultra-High Precision Measurement and Fault Recording

   ABB REM620C-F realizes high-precision measurement of key electrical parameters such as three-phase current, voltage, active/reactive power, and power factor, with current and voltage measurement accuracy up to ±0.1%. It supports high-resolution fault waveform recording (up to 10kHz sampling rate) and event logging, providing detailed data for post-fault analysis and power grid optimization.

3. Dual-Redundant Communication, Supporting Smart Substation Integration

   ABB REM620C-F adopts dual Ethernet ports with redundant design, supporting IEC 61850 GOOSE and MMS protocols, which is fully compatible with smart substation construction requirements. It can realize real-time data interaction and fast tripping signal transmission with other protection devices and control systems, without the need for additional hard wiring, greatly simplifying the substation wiring structure.

4. Strong Environmental Adaptability and Maintenance-Friendly Design

   ABB REM620C-F uses industrial-grade reinforced hardware and anti-corrosion materials, with built-in multi-level EMI filtering and surge protection circuits, which can resist strong electromagnetic interference, voltage fluctuations, and mechanical vibration in high-voltage substations. The modular design and user-friendly LCD HMI allow for easy on-site parameter adjustment, firmware upgrade, and fault diagnosis, reducing maintenance time and labor costs.

Application Cases

1. High-Voltage Transmission Line Protection System

   In a 220kV transmission line protection project of a regional power grid, ABB REM620C-F is installed in the substation relay room, responsible for real-time monitoring of line current, voltage, and impedance. When a short-circuit fault occurs on the line, the relay quickly activates distance protection to issue a tripping command, isolating the fault section within 20ms, thus ensuring the stability of the entire power grid and preventing fault expansion.

2. Power Transformer Bank Differential Protection

   In a large thermal power plant’s 110kV transformer bank protection system, ABB REM620C-F provides differential protection for the main transformer, monitoring the current difference between the primary and secondary sides of the transformer. When an internal fault such as winding short circuit occurs, the relay trips instantly to cut off the power supply, avoiding transformer burnout and ensuring the safe operation of the power plant’s power generation system.

3. Large Industrial Generator Set Protection

   In a petrochemical plant’s 30MW gas turbine generator set protection system, ABB REM620C-F integrates underfrequency, overvoltage, and out-of-step protection functions, monitoring the generator’s operating status in real time. When the grid frequency fluctuates abnormally, the relay automatically adjusts the protection strategy to ensure the generator is disconnected from the grid in a timely manner, preventing damage to the generator set caused by grid instability.

Competitor Comparison

Selection Suggestions

1. For high-voltage transmission lines, power transformer banks, and large industrial generator sets that require comprehensive protection and smart integration, ABB REM620C-F is the preferred choice due to its multi-layered protection algorithms, ultra-high precision measurement, and dual-redundant communication.
2. When selecting, confirm the CT/VT ratio according to the rated current and voltage of the protected equipment, and configure the corresponding protection functions based on the equipment type (transmission line, transformer, generator).
3. For smart substation applications, prioritize the configuration of IEC 61850 communication modules and redundant Ethernet connections to ensure the reliability of data transmission and control signal interaction.

Precautions

1. When installing ABB REM620C-F, wear an anti-static wristband to prevent static electricity from damaging the internal circuit board; ensure correct polarity of CT and VT wiring to avoid protection misoperation caused by reverse connection.
2. Parameter configuration must be carried out in accordance with the ABB official manual, and the protection setting values should be calculated based on the actual power grid parameters, avoiding blind configuration that may lead to protection failure or maloperation.
3. During long-term operation, regularly check the tightness of the wiring terminals to prevent poor contact caused by vibration; regularly back up the configuration parameters and fault records to avoid data loss due to module failure.
4. In outdoor or coastal substation applications, install the relay in a sealed and moisture-proof cabinet, and perform regular anti-corrosion maintenance on the wiring terminals to prevent corrosion caused by salt spray and humidity.

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