Description

GE Multilin F650-G-N-A-B-F-2-G-1-HI-C-E

Overview

Technical Parameters

• Power Supply Parameters: Supports a wide range of power input, with AC power ranging from 85-265V AC, DC power ranging from 85-300V DC, frequency 50/60Hz, and rated power consumption ≤15W. It can adapt to power supply environments in different industrial sites and ensure stable operation during voltage fluctuations.
• Protection Function Parameters:
• Overcurrent Protection: Covers phase overcurrent, ground overcurrent, and sensitive ground overcurrent protection. It supports multiple operating characteristics such as instantaneous, definite time, and inverse time (IEC/ANSI standard curves). The phase overcurrent setting range is 0.1-100A, and the ground overcurrent setting range is 0.05-50A, meeting overcurrent protection requirements of different feeders.
• Voltage Protection: Equipped with phase overvoltage, phase undervoltage, negative sequence overvoltage, and zero sequence overvoltage protection functions. The voltage setting range is 50%-120% of the rated voltage, with an operating delay of 0.05-300s, effectively responding to abnormal voltage conditions.
• Frequency Protection: Supports overfrequency and underfrequency protection. The frequency setting range is 45-55Hz (for 50Hz systems) or 55-65Hz (for 60Hz systems), with a measurement accuracy of ±0.01Hz, suitable for protection control during grid frequency fluctuations.
• Other Protections: Includes circuit breaker failure protection, automatic reclosing (up to 4 reclosings with adjustable delays), load shedding, etc. The automatic reclosing reset time is 0-300s, improving the system's fault recovery capability.
• Measurement Parameters: Capable of measuring parameters such as three-phase current, three-phase voltage, active power, reactive power, apparent power, power factor, frequency, and electric energy (active/reactive). The current measurement accuracy is ±0.2%, voltage measurement accuracy is ±0.2%, and power measurement accuracy is ±0.5%, providing accurate data support for system operation.
• Communication Interfaces: Equipped with 1 10/100Base-TX Ethernet interface (supporting IEC 61850, Modbus TCP/IP, DNP3.0) and 1 RS485 interface (supporting Modbus RTU). The Ethernet transmission rate is 10/100Mbps adaptive, supporting dual-network redundancy to ensure the reliability and real-time performance of data communication.
• I/O Interfaces: Standard configuration includes 16 digital inputs (optically isolated, supporting dry/wet contacts) and 8 digital outputs (relay outputs, capacity 5A/250V AC), which can be expanded to 32 digital inputs and 16 digital outputs to meet the needs of complex control logic.
• Environmental Adaptability: Operating temperature range is -25℃-+70℃, storage temperature range is -40℃-+85℃, relative humidity is 5%-95% (non-condensing), protection grade is IP40 (front panel). It has vibration resistance (10-500Hz, 1g acceleration) and shock resistance (25g, 11ms) capabilities, adapting to harsh industrial environments.
• Physical Specifications: Adopts 19-inch rack mounting, with dimensions of 144mm×178mm×254mm (height × width × depth) and a weight of approximately 2.5kg. It supports a drawer-type structure for easy installation and maintenance.
• Certification Standards: Complies with international standards such as IEC 61850-3, IEC 60255, UL 508, and CE, and has SIL 2 safety certification, meeting the strict requirements of power systems for safety and reliability.

Functional Features

• Comprehensive Feeder Protection: Integrates multiple protection functions such as overcurrent, voltage, frequency, and circuit breaker failure, covering various faults that may occur during feeder operation (e.g., short circuit, grounding, overvoltage, underfrequency). Through precise setting parameters and fast action response (minimum action time ≤10ms), it minimizes the impact of faults on the system.
• Intelligent Reclosing Control: Supports adaptive reclosing logic, which can automatically adjust the reclosing strategy according to fault types (transient/permanent). For example, it quickly recloses to restore power after transient faults (such as lightning flashover) and locks reclosing in case of permanent faults to avoid secondary damage to equipment, improving power supply reliability.
• High-Precision Measurement and Metering: With 0.2-class measurement accuracy, it can real-time collect parameters such as current, voltage, power, and electric energy of the feeder, supporting harmonic analysis (up to the 21st harmonic). It provides accurate data for grid energy efficiency management and load monitoring without the need for additional metering instruments.
• Flexible Communication and Networking: Supports mainstream industrial communication protocols such as IEC 61850, Modbus, and DNP3.0. The Ethernet interface supports dual-network redundancy design, enabling seamless integration into SCADA systems or intelligent substation automation systems. It realizes remote monitoring, parameter setting, and fault diagnosis, adapting to the development needs of digital grids.
• Powerful Event Recording and Analysis: Built-in large-capacity memory can record 1000 event records (with timestamp, accuracy ±1ms) and 20 fault waveforms (sampling rate 128 points/cycle). It supports exporting waveform data through software for offline analysis, helping maintenance personnel quickly locate fault causes and shorten fault handling time.
• Modularity and Scalability: Adopts modular hardware design. Digital I/O, communication interfaces, etc., can be expanded according to needs, supporting online hot swapping (some modules) for easy system upgrade and maintenance. It supports multiple sets of protection setting groups (up to 16 groups), which can be switched through external signals or communication commands to adapt to protection needs under different operating modes.

Application Fields

• Power Distribution Network: In ring main units and branch boxes of urban distribution networks, as the core feeder protection equipment, it realizes overcurrent and grounding fault protection for 10kV/20kV feeders. Cooperating with the automatic reclosing function, it improves the reliability of the distribution network. For example, in residential area distribution lines, it quickly isolates short-circuit faults and restores power supply in non-faulty areas.
• Industrial Power Distribution Systems: In the distribution networks of large industrial parks such as steel, chemical, and automobile manufacturing, it protects key circuits such as workshop feeders and transformer incoming lines. Through communication with PLC systems, it realizes load monitoring and interlock control, preventing production line shutdowns caused by feeder faults. For example, in chemical parks, it protects feeders connected to reactors to avoid voltage abnormalities affecting production safety.
• Substation Automation: In 35kV and below substations, as a protection device for outgoing intervals, it links with on-site monitoring systems (such as SCADA) to realize remote control and status monitoring of feeders. It supports digital communication under the IEC 61850 protocol, meeting the "four remotes" (remote measurement, remote signaling, remote control, remote adjustment) functional requirements of intelligent substations.
• New Energy Grid Connection: In the collection lines of photovoltaic power plants and wind farms, it protects feeders from faults such as short circuits and overcurrents. At the same time, through high-precision measurement functions, it monitors grid-connected current, power factor, and other parameters to ensure compliant grid connection of new energy power generation systems. For example, in the combiner box feeders of photovoltaic arrays, it prevents feeder overcurrent caused by component faults.
• Commercial and Public Facilities: In the power distribution systems of important places such as large shopping malls, hospitals, and data centers, it protects low-voltage feeders (such as power supply circuits for lighting, air conditioning, and IT equipment). Through voltage/frequency protection, it avoids equipment damage due to power abnormalities. For example, in data centers, it quickly isolates overloaded feeders to ensure the stable operation of key equipment such as servers.