Description
1. Product Title
ABB 1MRK000508-BD – 16-Channel Binary Input Module for Substation IED Protection Systems
2. Product Overview
The 1MRK000508-BD is a dedicated binary input acquisition board belonging to ABB’s 1MRK BIM series, engineered to work cooperatively with Relion series protection IEDs including REF615, REL670 and RET670 in power substation automation systems. Its core responsibility is to collect discrete DC status signals from circuit breakers, disconnecting switches, fault alarm contacts and auxiliary relay feedback contacts, convert field dry contact signals into standardized digital data for internal logic judgment of protection relays. With built-in isolation circuits and anti-surge components, 1MRK000508-BD filters out electromagnetic interference generated in high-voltage switchgear environments, guarantees stable signal sampling accuracy, and provides reliable status basis for breaker failure protection, interlock blocking, fault event recording and automatic reclosing logic in power distribution networks.
3. Technical Specifications
- Brand: ABB
- Model: 1MRK000508-BD
- Warranty: One Year
- Condition: 100% New & Original
- Input Channels: 16 independent binary DC input channels
- Rated Input Voltage: 110 VDC to 125 VDC
- Per Channel Input Current: Approximately 50 mA
- System Compatibility: ABB Relion series IEDs (REF615, REL670, RET670 protection relays)
- Isolation Design: Galvanic isolation for each input channel to suppress EMI and voltage surge
- Operating Temperature: -25°C to +55°C
- Storage Temperature: -40°C to +70°C
- Net Weight: 0.41 kg
- Installation Form: Plug-in internal board for protection relay chassis
- Protection Class: IP20 for cabinet inner installation
4. Application Scenarios
- Power Grid Distribution Substations: Embedded into feeder protection IEDs to monitor breaker auxiliary contact positions, switchgear door status and fault trip signals for medium-voltage overhead line and cable protection loops.
- Industrial Power Plant Auxiliary Systems: Deployed in station service power distribution cabinets to collect status feedback of high-voltage breakers, motor protection relays and emergency trip circuits for plant electrical safety interlock control.
- Petrochemical & Heavy Industry Internal Power Networks: Integrated into substation automation panels of refineries and chemical factories to capture discrete fault and switching signals, supporting comprehensive fault diagnosis and sequential event recording of on-site power supply systems.
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