Description
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BrandABB
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ModelREC670
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Product NameNumerical Bay Control and Protection Relay
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Country of OriginSweden
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HS Code8537101100
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Dimensions260mm×180mm×120mm
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Weight3.6kg
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Operating Temperature-25°C to +70°C
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Storage Temperature-40°C to +85°C
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Part Number1MRK004814-EG
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Warranty12 month
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Product StatusNew and original
ABB REC670 1MRK004814-EG Product Introduction and Technical Specifications
Input Technical Parameters
Power Supply Input: Supports wide-range universal power supply input, including AC 85V to 265V and DC 88V to 250V. It can withstand short-term power grid voltage fluctuations and transient surge interference, adapting to unstable control power supply conditions of on-site substations.
AC Analog Sampling Input: Equipped with high-precision voltage and current sampling channels, matching standard CT and PT secondary signal specifications of power systems. It supports real-time high-precision collection of line voltage, current, frequency, phase angle and power parameters, providing accurate data support for protection judgment and power monitoring.
Digital Status Input: Built-in multiple isolated digital input terminals, which can collect circuit breaker position status, isolating switch feedback signals, external interlock signals, fault reset signals and emergency switching signals, realizing full real-time status monitoring of bay-level equipment.
Output Technical Parameters
Protection Trip Output: Configured with high-reliability trip relay output channels, with strong load driving capability. It can directly drive circuit breaker trip coils to realize fast fault isolation, ensuring reliable action under power system fault conditions.
Control Relay Output: Multiple programmable control relay outputs are available, which can execute circuit breaker closing and opening control, switch interlock action and on-site equipment logic control, meeting bay-level automatic control requirements.
Alarm and Signal Output: Customizable multi-channel status and alarm output, which can send fault alarm, device abnormality, protection activation and system operation status signals to realize real-time on-site status prompt and remote fault warning.
Communication Output: Integrated Ethernet and optical fiber communication interfaces, supporting mainstream power industry protocols such as IEC61850 and Modbus. It realizes real-time upload of operating data, fault recording information and remote parameter configuration, achieving seamless docking with substation monitoring systems and DCS platforms.
Self-diagnosis Output: Built-in full-function self-diagnosis module, which can output device hardware abnormality, program exception and circuit fault signals, realizing real-time monitoring of the relay’s own operating status.
REC670 1MRK004814-EG ABB Product Core Advantages
Highly Integrated Bay-Level Functions: Integrates power system protection, electrical parameter measurement, bay logic control, fault recording and intelligent communication functions in one device, replacing multiple traditional single-function relays and monitoring modules. It effectively simplifies substation secondary circuit structure and reduces overall equipment investment and maintenance costs.
Ultra-High Operation Reliability: Adopts ABB’s industrial-grade core hardware and verified mature power protection algorithm, with strong resistance to on-site electromagnetic interference, vibration and temperature fluctuation. It features accurate fault judgment and fast response speed, effectively avoiding protection misoperation and refusal operation, and improving substation operation safety.
Flexible and Customizable Configuration: Supports flexible editing of protection logic, control interlock and signal output functions, adapting to various bay connection modes and power grid operation modes of medium and high-voltage substations. It can meet the personalized control and protection requirements of different power distribution systems.
REC670 1MRK004814-EG ABB Wiring Method
The ABB REC670 1MRK004814-EG adopts rear fixed terminal block wiring design with clear functional zoning, including power supply wiring area, AC sampling wiring area, digital signal input area, control and trip output area and communication wiring area, realizing standardized and standardized substation on-site wiring construction.
For power supply wiring, connect substation AC or DC control power supply to the dedicated power input terminals according to actual power supply specifications, confirm voltage range matching and firm wiring, and avoid loose contact caused by on-site vibration to ensure stable and continuous power supply for the device.
For AC sampling wiring, connect CT and PT secondary signal lines to analog sampling terminals in strict accordance with phase sequence and polarity standards. Adopt shielded cables for wiring and implement standardized grounding treatment to suppress on-site strong electromagnetic interference and guarantee the accuracy of sampling data and protection judgment.
For digital signal wiring, access on-site circuit breaker status, isolating switch feedback, external interlock and reset signals to corresponding digital input terminals to complete full collection of bay equipment operating status information.
For control and trip output wiring, connect trip relay terminals to circuit breaker fault trip loops, and connect control relay terminals to switch closing and opening control loops. Check loop insulation and conduction performance to ensure reliable control and protection action. For communication wiring, select Ethernet or optical fiber communication mode according to upper monitoring system requirements, complete cable connection and protocol parameter matching debugging.
After all wiring is completed, conduct comprehensive circuit inspection, insulation test and signal simulation debugging. Calibrate protection threshold values, control logic and communication parameters, and perform trial operation to verify that the device’s protection, monitoring, control and communication functions operate stably and accurately.
