Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
Product Introduction
When your complex power transmission network needs microsecond-level high-speed line fault clearance to prevent fault expansion and large-scale grid outages, this device acts as the core protection gatekeeper for all critical overhead and cable transmission lines.
It features phase-segregated line differential protection architecture that can independently detect and isolate single-phase, two-phase and three-phase line faults. Its native IEC 61850 full protocol support enables seamless integration with modern digital substation automation systems, supporting GOOSE-based fast inter-tripping across the entire substation.
RED670
RED670
RED670
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | RED670 (Relion 670 Series) |
| Product Type | Line Differential Protection Intelligent Electronic Device (IED) |
| Core Protection Function | Phase-segregated Line Differential Protection (87L) |
| Supported Lines | Overhead transmission lines, underground power cable lines |
| Communication Protocols | IEC 61850-8-1, IEC 61850-9-2 LE, C37.94 Fiber Optic |
| Physical Dimensions | 448 mm × 266 mm × 249 mm (Standard 6U 19-inch Rack) |
| Net Weight | Approx. 8.5 kg |
| Country of Origin | Sweden |
| Compatible Systems | ABB Relion 670 series substation automation platforms |
| Protection Trip Time | Ultra-fast fault clearance for transmission line internal faults |
| Industry Certification | IEC 61850 international standard certified |
Field Application & Technical Pitfalls
Critical Industrial Scenarios
- **110kV/220kV Urban Transmission Line Protection: Acts as the core protection IED for urban high-voltage transmission lines, ensuring fast and reliable isolation of line short-circuit faults to minimize power outage scope.
- **Large Wind Farm Grid Connection Line Protection: Delivers dedicated line differential protection for large wind farm grid-connected transmission lines, maintaining grid stability under fluctuating renewable power output conditions.
- **Interconnected Regional Power Grid Line Control: Provides high-sensitivity line fault protection for regional power grid interconnection lines, preventing cascading fault propagation across the entire interconnected grid.
Non-Negotiable Technical Pitfalls
- ⚠️ Bold Warning 1: Never connect non-matching CT secondary circuits directly to this IED. The third phase input channel will experience differential current imbalance that causes false protection trips.
- ⚠️ Bold Warning 2: Skipping the pre-commissioning line differential current balance test will leave you with hidden protection dead zones. This unit must complete full CT circuit polarity and balance verification to achieve rated ultra-fast tripping performance.
- ⚠️ Bold Warning 3: Do not disable the built-in CT saturation supervision function in the configuration software. The IED will lose stability during severe through-faults, leading to unwanted protection operation.
A regional power substation maintenance team once swapped a RED670 IED and skipped the differential balance test. The 13% unbalanced differential current caused the line protection to falsely trip during a through-fault, resulting in a 2-hour transmission line outage that affected over 28,000 local users.
Quality Control (QC) SOP & Transparency
- Inbound Verification: Cross-check the OEM serial number against ABB’s official Relion 670 part registry, confirm the part number RED670 matches the factory label, and inspect no damage to all CT input and fiber optic communication connectors.
- Live Rig Testing: Power the unit in a calibrated substation protection test platform, apply standard CT secondary signals, and confirm 2 full hours of stable line differential protection logic operation.
- Parameter Testing: Verify ultra-fast tripping performance meets factory specifications, confirm IEC 61850 GOOSE communication functions operate correctly, and validate all protection logic and self-diagnostic indicators function properly.
- Final QA & Packaging: Seal the tested IED in a static-shielding anti-static bag, attach a unique QC passed serial label, and nest it in foam padding inside a rigid industrial shipping carton.
Frequently Asked Questions (FAQ)
- Can I hot-swap this IED while the substation protection system is running? No. You must first place the corresponding transmission line protection in complete bypass mode before removing the unit, otherwise you will lose all line protection functions.
- What exact ABB systems is this IED compatible with? It works natively with ABB Relion 670 series protection platforms and ABB Ability digital substation automation systems. It will not operate correctly with legacy non-IEC 61850 substation systems without a custom protocol gateway.
- How long is the standard warranty for this new surplus unit? 12 months from delivery. It covers all manufacturing defects, but does not extend to units damaged by overvoltage, miswiring, or improper CT circuit connection in the field.
- How do I tell a genuine OEM unit apart from a refurbished clone? Genuine ABB RED670 IEDs have a laser-etched part number on the rear housing, not a printed sticker. Clone units almost always fail the ultra-fast line differential tripping performance test.
- What is the typical lead time for shipment? In-stock units ship within 48 hours. If you require official ABB factory protection performance test documentation, add 2 extra business days to the turnaround window.
- Can this IED replace the older RED600 legacy line differential protection unit? Well, technically it fits the same standard 6U 19-inch substation panel cutout, but you will need to reconfigure all line parameters, CT ratios and differential protection settings to maintain full protection performance.
