Material
Other, Global universal model
Condition
Other, Global universal model
Task
Other, Global universal model
Mathematical Model
Other, Global universal model
Signal
Other, Global universal model
Customized
Non-Customized
Structure
Other, Global universal model
Operating temperature
-40℃ to +70℃
Humidity
5% - 95% (non - condensing)
I. Overview
ABB REC650 1MRK008514-AB is a high-performance relay protection and measurement & control device, belonging to the ABB Relion series, and plays an important role in the safe and stable operation of power systems. It is mainly oriented to medium and high voltage transmission lines, transformers, busbars and other power equipment, providing comprehensive protection, control, measurement and monitoring functions.
This device can accurately capture various faults in the power system, such as short circuits and ground faults, and respond quickly to cut off the faulty circuit in time, thereby minimizing the impact of faults on the power system and ensuring the safety of power equipment and the continuity of power supply. Its design strictly complies with international power industry standards such as IEC 61850, with excellent compatibility and interoperability, and can be seamlessly integrated with other intelligent devices, helping to build an efficient and intelligent substation automation system. It can perform stably both in large-scale power transmission networks and regional distribution networks.

II. Technical Parameters
Electrical Parameters
Operating Power Supply: Supports dual AC and DC power input. The AC operating voltage range is 85-265V AC, and the DC operating voltage range is 85-300V DC. This wide-range power input design enables it to adapt to the power supply conditions of different power systems, ensuring stable operation in complex power environments and providing continuous and reliable power support for various functional modules inside the device.
Rated Frequency: Compatible with 50Hz and 60Hz frequency standards, which can meet the frequency requirements of power systems in different regions around the world, and can operate normally in power systems worldwide, ensuring that the accuracy of protection and measurement is not affected by frequency differences.
Power Consumption: It has low power consumption characteristics. The typical power consumption is no more than 20VA when powered by AC, and no more than 20W when powered by DC. The low-power design is not only conducive to energy saving, but also reduces the heat generation during the operation of the device, prolongs the service life of the equipment and improves the operational stability.
Measurement Parameters
Current Measurement: The rated current is 1A or 5A, with a wide measurement range, which can meet the current monitoring needs of different power equipment. The measurement accuracy is high, with an error of no more than 0.2%, which can accurately reflect the actual changes of current in the power system and provide accurate data basis for protection and control decisions.
Voltage Measurement: The rated voltage can be selected according to actual application scenarios, such as 100V, 220V, etc. The measurement error is also no more than 0.2%, which can accurately monitor the voltage parameters in the power system and ensure quick and accurate judgment of abnormal voltage conditions.
Power Measurement: It can measure active power and reactive power, with a measurement accuracy of 0.5 class, providing reliable data support for the economic operation analysis of the power system, and helping dispatchers optimize the allocation of power resources and reduce energy consumption.
Environmental Parameters
Operating Temperature: The operating temperature range is -40℃ to +70℃, with extremely strong temperature resistance. It can operate stably in extreme environments such as cold northern regions, high-temperature southern regions and plateaus with large temperature differences, ensuring continuous protection and monitoring of power equipment.
Relative Humidity: It can work normally in an environment with a relative humidity of 5%-95% (non-condensing). The interior of the device adopts advanced moisture-proof technology and sealing design, which effectively resists the erosion of humid air on internal circuits, and is suitable for humid coastal areas, rainy mountainous areas and other environments.
Anti-vibration Performance: It can withstand vibrations with a frequency of 10-2000Hz and an acceleration of 15g. In the common equipment vibration environment of power systems, it will not affect the normal working performance of the device, ensuring the reliability of protection and control functions.

III. Functional Features
Comprehensive Protection Functions
Line Protection: It has complete line protection functions, including distance protection, zero-sequence current protection, overcurrent protection, etc. Distance protection can quickly locate and trip the fault according to the electrical distance from the fault point to the protection installation; zero-sequence current protection is specially aimed at ground faults and can play a good role in both neutral grounded and non-grounded systems; overcurrent protection can act in time when the line current exceeds the set value to prevent equipment damage due to overcurrent.
Transformer Protection: It can realize functions such as differential protection, gas protection and overload protection of transformers. Differential protection detects internal faults by comparing the current difference between the two sides of the transformer, with quick and sensitive action; gas protection can effectively monitor gas faults inside the transformer; overload protection can prevent the transformer from shortening its service life due to long-term overload operation.
Busbar Protection: Supports busbar protection function, adopts advanced algorithms, can quickly detect and trip busbar faults to prevent fault spread. In the case of a busbar fault, it can accurately select to trip the faulty busbar without affecting other normally operating equipment, ensuring the stability of the power system.
Accurate Measurement and Monitoring
Real-time Measurement: It can collect electrical parameters such as current, voltage, power and frequency in the power system in real time, and perform high-precision processing and analysis. The measured data can be uploaded to the substation automation system in real time, providing operators with comprehensive and accurate information on the operating status of the system.
Event Recording: It has a powerful event recording function, which can record operation events, fault events, alarm events, etc. in detail. The recorded content includes the time, type and parameters of the event, with high accuracy, providing an important basis for fault analysis and accident recall.
Status Monitoring: It can monitor its own operating status in real time, including the status of power supply, communication, internal components, etc. Once an abnormality occurs, it immediately sends an alarm signal to remind operation and maintenance personnel to repair in time, improving the reliability and availability of the device.
Flexible Control Methods
Local Control: Operators can perform local operations through the human-machine interface (HMI) of the device, such as circuit breaker switching on/off, setting value modification, etc. The human-machine interface adopts a graphical design, which is simple and intuitive to operate, and easy to master quickly.
Remote Control: Supports remote control through communication networks. Operators can remotely operate the device in the substation control center or dispatch center, such as remote switching on/off, remote modification of setting values, etc., improving the automation level and operation efficiency of the power system.
Logical Control: It has a programmable logic control function. Users can write control logic according to their needs to realize automatic control of power equipment, such as automatically adjusting transformer taps according to line load, and realizing automatic reclosing of circuit breakers.