1. Product Overview
Part Number: 1MRK005904-HB, fully hardware compatible with 1MRK005904-FC, 1MRK005904-GB, 1MRK005904-KB. All models share identical baseboard and terminal definition, with differences only in factory preloaded function logic, communication configuration and disturbance recording capacity.
Manufacturer: ABB
Product Line: High-end digital protection and control IED of ABB Relion 670 Series, specially designed for 10kV~35kV medium-voltage distribution networks, critical auxiliary power feeders, industrial captive power stations and substation bus section circuits. serving as the core secondary equipment for intelligent substation renovation and new high-voltage switchgear projects.
Model Coding Definition
1. 1MRK: Unified prefix for ABB power protection IED standard part numbers;
2. 005904: General base hardware platform code, defining processor configuration, sampling architecture, terminal layout and mechanical dimensions;
3. HB: High-end customized suffix, representing full-function configuration with complete feeder protection logic, large-capacity disturbance recording, dual-Ethernet redundant communication and high-precision earth fault detection algorithm, applicable to high-reliability power supply scenarios such as power plants, industrial heavy-load systems and key substations.
Product Definition: High-end all-in-one intelligent protection terminal integrating full-range fault protection, high-precision power metering, mass binary signal acquisition, reliable remote control output, millisecond-level event recording, high-definition fault recording and redundant communication. It can accurately identify and isolate all common power system faults, monitor real-time power parameters and equipment operating status, and seamlessly connect with distribution automation, plant DCS and substation integrated automation systems to realize unattended intelligent operation of high-voltage circuits. It completely replaces traditional discrete electromagnetic relays and single-function microprocessor protection devices.
2. Six Core Hardware Functional Units
2.1 Intelligent Full-Range Fault Protection Calculation Unit
Equipped with high-speed 32-bit industrial real-time processor and original ABB optimized full-set protection algorithms. It supports definite/inverse-time overcurrent protection, sensitive residual earth fault protection, small-current earth fault line selection, negative sequence unbalance protection, undervoltage blocking overcurrent, over/undervoltage protection, under/over frequency load shedding, two-stage auto-reclosing, circuit breaker failure protection and load limiting protection. All settings and operating time limits are adjustable via front panel or upper computer software. The device responds and trips within milliseconds upon fault triggering, with fault type, timestamp and electrical parameters latched. Built-in anti-overstep tripping and anti-maloperation interlock logic meets the strict protection requirements of complex power grids and heavy industrial loads.
2.2 High-Precision Industrial Sampling & Metering Unit
Multi-channel anti-interference high-precision sampling circuits adapt to standard CT 1A/5A and PT 100V secondary signals. Measurement accuracy reaches Class 0.2 and protection sampling accuracy reaches Class 0.5. It collects three-phase current, three-phase voltage and residual signals in real time, and automatically calculates active/reactive power, power factor, four-quadrant energy, harmonic distortion rate and three-phase unbalance degree. The built-in high-precision metering function eliminates external energy meters and meets the requirements of power grid assessment, plant energy consumption statistics and industrial load monitoring.
2.3 High-Reliability DI/DO Interlock Unit
16 isolated passive DI channels collect circuit breaker status, disconnector position, spring charging state, device alarms and protection switch status. 8 independent SPDT high-power relay DO outputs (5A/250VAC) directly drive breaker switching, audible/visual alarms and interlock linkage loops. Each output adopts dual hardware and software anti-maloperation interlock design, which strongly shields EMI and surge voltage generated by inverters and high-power motors to eliminate unintended tripping.
2.4 Large-Capacity High-Definition Recording & Storage Unit
Equipped with large-capacity non-volatile high-speed memory, storing more than 2000 SOE records with 1ms time resolution for accurate tracing of equipment status changes and protection actions. It automatically records COMTRADE standard waveforms with 8 pre-fault cycles and 16 post-fault cycles to fully restore the whole fault process. Data is permanently retained after power failure. The local high-speed USB port supports quick export of waveforms and logs for fault analysis and equipment maintenance, with larger storage capacity than basic FC and KB versions.
2.5 Dual-Redundant Multi-Protocol Communication Unit
Standard dual 100Mbps Ethernet hot-standby communication with automatic link switching, ensuring uninterrupted data transmission under single-link failure. Natively supports IEC 60870-5-104, Modbus TCP and DNP3.0, with reserved RS485 serial port compatible with IEC 60870-5-101 and Modbus RTU. It supports remote setting modification, online firmware upgrade and remote parameter tuning, seamlessly connecting with various power automation platforms to meet high-level redundant networking requirements.
2.6 Industrial Reinforced Environmental Adaptation Unit
Split modular structure with front LCD HMI and rear standard terminal base. The whole PCB is coated with military-grade conformal coating for moisture, salt fog and corrosion resistance. Fanless enclosed passive heat dissipation prevents dust and moisture ingress. Aging-prone electrolytic capacitors are eliminated to withstand high temperature, dust accumulation, long-term vibration, coastal salt fog and strong EMI in switchgears, supporting 24/7 maintenance-free continuous operation.
3. Technical Specifications
3.1 Basic Hardware Specifications
Item | Specification |
|---|
Part Number | 1MRK005904-HB |
Series | ABB Relion 670 High-End Feeder Protection & Control IED |
Mounting | Standard 4U embedded rack mounting |
Dimension | 177mm(H) × 226mm(W) × 240mm(D) |
Net Weight | Approx. 2.1kg |
Power Supply | Universal AC/DC 88~264V wide-range input |
3.2 Core Electrical Parameters
- CT Input: 1A/5A adaptive, measurement Class 0.2, protection Class 0.5
- PT Input: Standard 100V secondary voltage adaptation
- DI Channels: 16 passive dry contacts, compatible with 110VDC/220VDC control power
- DO Contacts: 8 SPDT relays, rated 5A/250VAC with hardware interlock
- Instantaneous Trip Time: ＜25ms ultra-fast response
- SOE Resolution: ≤1ms, maximum 2000 event logs
- Disturbance Recording: 8 pre-fault cycles + 16 post-fault cycles
3.3 Environmental & Safety Compliance
- Operating Temperature: -25℃ ~ +65℃
- Storage & Transport Temperature: -40℃ ~ +85℃
- Humidity: 5%~95%RH non-condensing, resistant to slight salt fog and dust
- Dielectric Withstand: 2kVAC 1min between channels and chassis without breakdown or flashover
4. Product Advantages
1. Full high-end functions: Unlocks all protection, recording and communication functions compared with basic FC/KB versions, supporting secondary auto-reclosing, precise earth fault line selection and dual-network redundancy for high-standard power supply scenarios.
2. Dual-Ethernet hot-standby communication: Eliminates data interruption and monitoring offline risks caused by single-link failure, ensuring ultra-high communication reliability for unattended substations and continuous industrial production.
3. High-precision fault identification: Optimized earth fault algorithm accurately identifies weak earth faults in ungrounded and arc suppression coil grounded systems, solving misjudgment and missed judgment problems of traditional protection devices.
4. Superior environmental adaptability: Military-grade three-proof design without aging-prone components, with better vibration resistance, anti-interference and corrosion resistance for long-term operation in power plant, chemical and coastal harsh environments.
5. Universal wide-range power supply: 88~264V AC/DC universal input compatible with substation DC power and plant AC power, simplifying model selection and spare part management.
6. Full compatibility and replaceability: Identical hardware and terminal definition with all 005904 platform models, supporting direct drop-in replacement with only configuration file upgrade required, no secondary wiring modification needed.
5. Application Scenarios
1. Thermal & Hydropower Plant Core Auxiliary Power Loops: Applied to key auxiliary feeder protection, bus section protection and main transformer low-voltage outlet protection, ensuring stable operation of core equipment and linkage with plant DCS to avoid unit shutdown caused by auxiliary equipment faults.
2. Chemical & Metallurgical Captive Power Plants: Adapts to strong EMI environments with dense inverters and high-power motors, providing reliable protection for high-voltage incoming lines and process load feeders to guarantee uninterrupted continuous production.
3. Urban Key Substations & First-Class Load Distribution Lines: Serving data centers, rail transit and medical core loads, realizing fast fault location and isolation to minimize power outage scope and improve power supply reliability.
4. Medium-Voltage Ring Main Unit & Distribution Network Intelligent Upgrade: Replaces outdated relays and low-end protection devices to realize distribution network self-healing, remote monitoring and intelligent unattended operation.
5. High-Reliability Power System Technical Renovation: Upgrades basic protection devices with insufficient functions and single communication mode, realizing all-round improvement of protection logic, communication redundancy and data storage without wiring modification.
