Product Details
Configured for high-speed transformer phase protection and local contact switching within high-voltage networks, the ABB 1MRK004816-AC (RET670 Protection Relay) provides direct physical/electrical execution. The hardware monitoring engine samplers 300 - 500 VAC secondary voltage lines at 50/60 Hz to command localized circuit isolation via dual single-pole double-throw (SPDT) electromechanical output pathways.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | RET670 (1MRK004816-AC) |
| Brand | ABB |
| Origin | Sweden |
| Product Type | Transformer protection relay module |
| Voltage Range | 300 - 500 VAC |
| Frequency | 50/60 Hz |
| Measurement Accuracy | +/- 1% |
| Output Contacts | 2 SPDT (Single-Pole Double-Throw) configuration |
| Supported Protocols | IEC 61850, Modbus, DNP3 |
| Data Functions | Sequence-of-events logging, internal fault record storage |
| Mounting Type | DIN rail compatible base infrastructure |
| Shock & Vibration | Compliant with IEC 60068 standard parameters |
| Operating Temp | Standard industrial platform rating (-25 to +70 deg C typical) |
| Power Consumption | Dependent on discrete SPDT relay coil actuation states |
| Dimensions | Fixed dimension layout matching Relion subrack chassis allocations |
| Weight | Standard subrack panel weight specification |
Profinet / EtherNet/IP Deterministic Networks Performance
To keep measurement latency within standardized substation thresholds, the internal analog conversion registries coordinate with specific backplane bus communication velocity parameters. The chassis structure scales mapping indices using standard I/O density scaling adjustments, which maps telemetry packets over IEC 61850 protocol loops. Maintaining complete firmware flash compatibility between the embedded processor and network interface options is mandatory to ensure structured synchronization during heavy fault sequences.
Frequently Asked Questions
Q: Can the 1MRK004816-AC electromechanical SPDT outputs be serviced while the primary power module is live?
A: No. Hot-swapping the output relays or changing terminal layout setups while the unit is energized is prohibited. Auxiliary power must be fully isolated to protect the processor components from damage caused by inductive arc reflection.
Q: How are fault records stored inside the unit protected during an auxiliary power drop?
A: The event logger and fault records are retained in non-volatile internal flash memory, preserving data without requiring continuous auxiliary power during grid anomalies.
Q: What step is required if the communication board firmware version varies from the core base module?
A: A firmware revision mismatch will trigger an internal watchdog fault, isolating the backplane bus connection and placing the protective outputs into a deactivated state.
Field Installation Guidelines
- Chassis Rail Grounding: Ensure the DIN rail or back panel framework is bonded to the main copper substation ground grid using low-impedance grounding straps. Clean paint or non-conductive coatings from all metal surfaces.
- Secondary Measuring Circuit Boundaries: Route the 300 - 500 VAC input connections through dedicated isolation circuit breakers or fuses to prevent overvoltage damage to the secondary sampling instrumentation cards during primary system faults.
- Inductive Signal Routing Controls: Run all network and communication wiring through physical trunk lines separated from parallel AC control or trip circuit wiring to minimize inductive signal distortion.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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