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Phone: +86 16626708626Description
ABB RET670 1MRK004816-AC Product Introduction:
ABB RET670 1MRK004816- AC is a highly advanced power transformer protection, control, and monitoring relay, which is an important component of ABB’s well-known Relion product family. This family of products is renowned for providing high-performance and reliable solutions in the field of power distribution. In the overall architecture of industrial or utility power systems, it serves as the “guardian” of power transformers. It receives data from current transformers (CTs) and voltage transformers (VTs) connected to transformers, and based on this data, uses complex algorithms to determine protection, control, and monitoring strategies for transformers.
ABB RET670 1MRK004816-AC
Engineers and system integrators highly praise ABB RET670 1MRK004816-AC for its versatility and ease of integration. It can be configured to accommodate different types of power transformers, whether they are double winding, triple winding transformers, autotransformers, or shunt reactors. Its flexible configuration options enable it to adapt to various power system settings, whether it is small industrial factories or large utility substations.
ABB RET670 1MRK004816-AC
ABB RET670 1MRK004816-AC
Main features and advantages:
One of the most notable features of ABB RET670 1MRK004816- AC is its comprehensive protection capability. It provides differential protection, which is crucial for detecting low-level faults inside transformers. This protection function uses second and fifth harmonic suppression to distinguish between normal excitation inrush current and actual fault current when the transformer is energized. Ground fault protection is another key function that provides low impedance and high impedance protection against winding ground faults, ensuring the safety of transformers and power systems.
Distance protection serves as a backup protection for phase to phase and phase to ground faults. If the main protection function fails to operate correctly, distance protection can intervene to isolate the fault. Overcurrent and thermal protection functions are also readily available. These functions are configurable, allowing for overcurrent and thermal overload protection with multiple time constants to be implemented based on the specific characteristics of the transformer and the power system. This flexibility ensures that the relay can adapt to the specific needs of transformers and power systems.
Circuit breaker failure protection is another important function. In the event of a circuit breaker failure, ABB RET670 1MRK004816- AC ensures rapid response, tripping surrounding circuit breakers to prevent fault propagation and further damage to the power system.
In terms of hardware design, ABB RET670 1MRK004816- AC is designed to be sturdy and reliable. It can operate within a wide voltage range of 110 V AC to 250 V AC and is suitable for different power systems worldwide. The number of current and voltage inputs is usually 4 to 6, which can comprehensively monitor the electrical parameters of the transformer. It has high-resolution fault recording capability, which is of great value for analyzing the cause of faults after they occur.
Compatibility is the strength of this device. It supports multiple communication protocols, including IEC 61850, Modbus, DNP 3.0, Profibus, and IEC 60870-5-103. This enables it to effectively communicate with other devices in the power distribution network, such as remote terminal units (RTUs), programmable logic controllers (PLCs), and human-machine interfaces (HMIs). This seamless communication enables real-time monitoring and control of transformers from a central location, improving the overall efficiency and reliability of the power system.
ABB RET670 1MRK004816- ACis also equipped with an advanced digital signal processing system. This system combines complex algorithms to ensure accurate measurement and reliable protection of electrical parameters. The user-friendly graphical interface enables operators and engineers to easily configure and monitor protection settings. Its redundant hardware architecture improves the reliability and availability of the system, reducing the risk of unexpected failures.
Technical specifications:
Model ABB RET670 1MRK004816-AC
Brand ABB
Type: Power Transformer Protection, Control, and Monitoring Relays
Working voltage range 110 V AC -250 V AC
Rated frequency 50/60 Hz
Rated current up to 5 A
Current input quantity 4-6
Voltage input quantity 4-6
Input 32 (including current and voltage inputs)
Output 32
Communication protocols IEC 61850, Modbus, DNP 3.0, Profibus, IEC 60870-5-103
The fault recording capability is to have high-resolution event recording
Working temperature range -40 ° C to 70 ° C
Compliant with standards such as IEC 60255, IEC 61850, IEEE C 37.90, etc
Weight 1.7 kg
Size 150mm * 240mm * 350mm
Packaging option A10: Transformer backup protection; A25: Voltage control; A30: Double winding transformer with single circuit breaker configuration; B30: Dual winding transformer with multiple circuit breakers configuration; A40: Three winding transformer with single circuit breaker configuration; B40: Three winding transformer with multiple circuit breakers configuration
Contact Us
Phone:+86 16626708626
WhatsApp/WeChat:+86 16626708626
Email: 3772179818@qq.com
Application areas:
Taking a large industrial park with numerous manufacturing factories as an example, these factories rely on a vast network of power transformers to supply power to their machinery and equipment. Once a transformer suddenly malfunctions, such as an internal short circuit or overcurrent caused by equipment failure, it may lead to serious production interruption. At this point, the ABB RET670 1MRK004816-ACinstalled here is functional. It can continuously monitor the electrical parameters of transformers and quickly detect any abnormal situations. Once a malfunction occurs, it will take immediate action, such as tripping the circuit breaker to isolate the affected transformer, thereby minimizing equipment damage and production downtime.
Whether it is large-scale power plants that use coal, gas, hydropower, or nuclear power, power production facilities also highly rely on the reliable operation of power transformers.ABB RET670 1MRK004816-AC provides protection for these transformers, ensuring that the generated electricity can be efficiently and safely transmitted to the grid. This helps maintain the stability of the entire power supply system, ensuring a continuous and reliable power supply for consumers.
Related product introduction:
ABB RET600 series: This is a related series of protective relays. Compared to RET670, the RET600 series may provide more basic protection functions. It can be used in scenarios where the power system requires relatively simple requirements or cost-effectiveness is the main consideration. However, for more complex transformer protection requirements, RET670 with comprehensive functionality is a more suitable choice. In some power systems, RET600 series relays can be used for less critical transformers, while RET670 can be used for critical transformers to optimize protection strategies.
ABB RTU500: This remote terminal unit can work in conjunction with ABB RET670 1MRK004816- AC. The RTU500 can collect data from RET670, such as fault information, transformer operating parameters, and relay status, and then transmit this data to the central control station, allowing operators to monitor and manage transformers from a remote location. This is particularly useful for large-scale power distribution systems covering a wide geographic area, as on-site monitoring of each transformer is impractical.
ABB PM866AK01: This is a power module that can be used as part of the overall electrical infrastructure for deploying ABB RET670 1MRK004816- AC. PM866AK01 provides stable power supply for RET670 and other connected devices. A reliable power supply is crucial for the normal operation of protective relays, and PM866AK01 ensures that RET670 receives a consistent and clean power supply, improving its performance and reliability.
ABB CI854AK01: This is an input/output module that can be connected to ABB RET670 1MRK004816- AC to expand its connection options. By connecting CI854AK01, more sensors and actuators can be integrated into the system. For example, more current sensors or voltage sensors can be added to provide more detailed data about the electrical status of the transformer. It is also possible to control actuators such as additional circuit breakers or switches through this module, thereby achieving more comprehensive control over transformers and associated power systems.
ABB SACE Emax 2: This is a circuit breaker that can be paired with ABB RET670 1MRK004816- AC. If RET670 detects a fault in the transformer, it can send a signal to the SACE Emax 2 circuit breaker to trip. The circuit breaker then interrupts the flow of current, isolating the faulty transformer from the rest of the power system. The coordinated operation of RET670 and SACE Emax 2 circuit breakers ensures effective fault protection and helps maintain the integrity of the power system.
ABB REF615C_E HCFEAEAGAABC2BAA11E: Although REF615C_E mainly focuses on feeder protection, in some power systems, it can be integrated with ABB RET670 1MRK004816- AC. For example, in substations that require simultaneous protection of transformers and feeders, RET670 can protect transformers, while REF615C_E can protect feeders. These two devices can communicate and coordinate their actions to ensure the overall safety and reliability of the power system. The feeder level fault information detected by REF615C_E can be shared with RET670, and vice versa, to gain a more comprehensive understanding of the health status of the power system.
ABB PX500: This is a control unit that can be integrated with ABB RET670 1MRK004816- AC to provide additional control functions and flexibility in programming transformer protection and control strategies. PX500 can be used to customize the operation of RET670 according to the specific requirements of the power system. For example, it can be used to adjust the sensitivity of protection functions, set different operating modes for different load conditions, or program specific control sequences for transformer power on and off.
Installation and maintenance:
Before installing RET670 1MRK004816-AC, it is necessary to ensure that the installation environment meets the equipment requirements. The area should be free from excessive dust, moisture, and strong electromagnetic interference, as these factors may affect the accurate operation of the relay. Thoroughly check the power supply voltage to match the device’s specified 110-250 V AC range. In addition, verify that the current and voltage transformers connected to it are of the correct type and calibrated correctly. Any inaccuracy in these components may result in measurement errors and protection failure.
For maintenance, it is recommended to conduct regular visual inspections. Check if there are any physical signs of damage to the device casing, such as cracks or loose connections. Regularly perform diagnostic tests to check the integrity of communication interfaces and the accuracy of protection functions. Firmware updates are crucial as they typically result in error fixes, performance improvements, and new features. When updating firmware, it is important to carefully follow ABB’s official guidelines to avoid any potential issues. In addition, continuously monitor the long-term performance of the equipment. Track parameters such as response time and accuracy of measurement functions during fault detection. This helps detect any early signs of degradation, enabling timely maintenance and preventing unexpected failures in the power distribution system.
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