Description
The ABB 1MRK000005-380 (1MRK000614-ABr00) is a high-reliability printed circuit board (PCB) assembly designed for use within ABB’s power system protection and automation frameworks, specifically the RELION or legacy 500/600 series protection relays. This board functions as a specialized processing or power interface module, ensuring the stable operation of numerical relays used in high-voltage substation environments.
- Series Compatibility: ABB Relion / 500 & 600 Series Protection Relays
- Function: Control and Interface PCB for Power Management/Signal Processing
- Supply Voltage: Optimized for 110V-250V DC/AC auxiliary power circuits
- Signal Integrity: Advanced electromagnetic compatibility (EMC) shielding for substation environments
- Communication Interface: Proprietary internal bus connector for rack integration
- Operating Temperature: -25°C to +70°C (Extended industrial range)
Product Datasheet
| Feature | Specification |
|---|---|
| Model | ABB 1MRK000005-380 |
| Assembly No. | 1MRK000614-ABr00 |
| Dimensions | 235 x 165 x 20 mm |
| Weight | 0.38 kg |
| Country of Origin | Sweden / Finland |
| Protection Class | Conformal coated for humidity and dust resistance |
| Standards | IEC 60255 (Measuring relays and protection equipment) |
Application Fields
This PCB assembly is a core component in electrical infrastructure protection, particularly in:
- Substation Automation: Integral to numerical relays for line, transformer, or busbar protection.
- Smart Grid Control: Managing high-speed data acquisition and logic processing in digital substations.
- Industrial Power Plants: Controlling medium and high-voltage switchgear interface modules.
- Renewable Energy Integration: Used in protection schemes for large-scale wind farm and solar plant grid connections.
Product Instructions
- Safety Protocol: Disconnect the auxiliary power and short-circuit any current transformer (CT) secondary circuits before opening the relay housing to prevent electric shock or equipment damage.
- ESD Precautions: Use a grounded anti-static wrist strap. Handle the 1MRK000614-ABr00 board by its edges only to avoid static damage to the surface-mount components.
- Removal: Carefully slide the board out from its rack-mounted slot. Note the position of any flat ribbon cables or mechanical locking clips.
- Installation: Align the board with the plastic guide rails in the relay chassis. Push firmly until the rear connector is fully mated with the backplane.
- Re-commissioning: Once installed, perform a relay self-test or a secondary injection test to ensure the new board is correctly communicating with the central processing unit.
Q&A – Common Questions
Q1: What is the relationship between the 1MRK000005-380 and 1MRK000614-ABr00 numbers? A1: 1MRK000005-380 is the catalog or ordering number for the completed functional module, while 1MRK000614-ABr00 is the specific manufacturing assembly number printed on the circuit board itself.
Q2: Can I swap this board between different ABB relay types? A2: No, while they may look physically similar, these boards are often hardware-keyed or firmware-specific to a particular protection function (e.g., Distance Protection vs. Differential Protection). Always match the full part number and revision.
Q3: How do I troubleshoot a “Hardware Fail” alarm on this board? A3: Check the internal diagnostic logs of the relay. If the error points to an I/O or power supply failure, verify the input voltages at the terminals. If voltages are correct, the internal power regulation circuit on the PCB may be faulty.
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