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The ABB RED670 (now under Hitachi Energy branding as part of the Relion® 670 series) is an advanced line differential protection IED (Intelligent Electronic Device) specifically engineered for the protection, monitoring, and control of overhead transmission lines and cables in high-voltage networks. The ABB RED670 provides phase-segregated current differential protection (87L) with high sensitivity to high-resistance faults, secure phase selection, and support for multi-terminal lines (up to 5 ends). The ABB RED670 can also handle transformer feeders, generator-transformer units, and additional backup protections like distance (21), overcurrent, and earth fault functions. The ABB RED670 excels in applications from distribution to extra-high voltage systems, offering pre-configured options (e.g., A31/B31 for basic, A32/B32 for enhanced), extensive I/O expandability, IEC 61850 compliance, and robust communication for substation automation. The ABB RED670 is type-tested, delivered with default settings for fast commissioning, and widely used in power utilities for reliable fault detection and system stability. Overall, the ABB RED670 is a flagship solution for transmission line differential protection with comprehensive functionality and flexibility.

Model / Product,RED670 (Relion® 670 series Line Differential Protection IED)

Device Type,Intelligent Electronic Device (IED) for line differential protection

Primary Protection,"Line differential (87L): 3 or 6 CT sets, 2–5 line ends; phase-segregated with in-zone transformer support"

Additional Protections,"High-impedance differential (87), restricted earth fault (87N), distance (21/21N quadrilateral/mho), power swing (68), pole slip (78), etc."

Configurations,"Pre-configured: A31/A32 (basic/enhanced 3-end), B31/B32 (multi-end/advanced); customizable"

Analog Inputs (typical),"Up to 12–24 current/voltage channels (TRM modules: 1A/5A CT, 100–220V VT)"

Binary I/O,Extensive: up to dozens of BI/BO via BIM/BOM/IOM modules; expandable

Communication,"IEC 61850 Ed.1/Ed.2, IEC 60870-5-103, DNP3, LON, SPA; Ethernet, optical/serial ports"

Power Supply,"24–48 V DC, 48–125 V DC, 100–250 V DC/AC (redundant options)"

Operating Temperature,-25 °C to +55 °C (standard); extended ranges available

Case Sizes,"1/2, 3/4, or 1/1 of 19"" rack; 6U height"

HMI,"Local graphical HMI (large/small), single-line diagram, LEDs, keypad"

Standards Compliance,"IEC 60255 series, type-tested platform"

Country of Origin,Sweden / Finland (typical ABB/Hitachi Energy)

Life Cycle Status,"Active (ongoing support, spares available)"

Mount the ABB RED670 in a 19" rack or panel, ensuring proper ventilation and grounding per installation manual.

Connect power supply (verify redundant feeds if configured) and check power-up LEDs/HMI for normal status on the ABB RED670.

Wire CT/VT inputs (phase reference, currents/voltages) and binary I/O (trip/close, alarms) following configuration-specific diagrams.

Establish communication links (Ethernet for IEC 61850, optical for line differential) to remote ends or substation network.

Use PCM600 tool (or later versions) to configure: load pre-configured IED (A31/B31 etc.), set CT/VT ratios, line parameters, differential settings, and protection zones for the ABB RED670.

Commission: perform injection tests for differential characteristic, distance zones, and communication; verify synchronization (e.g., via GPS/IRIG-B) and end-to-end testing.

Monitor via HMI or SCADA: check differential currents, fault records, and alarms during live operation with the ABB RED670.

Only qualified personnel with substation protection training should install or commission the ABB RED670, adhering to ABB/Hitachi Energy safety rules and IEC standards.

Isolate all power, lock out/tag out, discharge CT circuits (short CT secondaries), and confirm zero voltage/energy before wiring or handling the ABB RED670.

Use shielded/twisted-pair cables for analog inputs, proper grounding (single-point shield), and fiber-optic for line differential links to minimize EMI/noise.

Ensure CT/VT polarity and ratios match configuration; avoid open CT circuits during energization to prevent high voltages on the ABB RED670.

Verify environmental conditions (temperature, humidity, vibration) and EMC compliance; do not exceed rated inputs or modify hardware without authorization.

Follow specific precautions for multi-terminal differential: ensure channel delays and synchronization are accounted for in settings.

Check local HMI LEDs, display, and status indicators on the ABB RED670 each shift for alarms, healthy operation, or communication faults.

Monitor differential currents (bias vs. operate), restraint signals, and event/disturbance records via HMI or remote tool for anomalies.

Inspect cabinet enclosure, cabling, and connections for tightness, corrosion, dust, or damage affecting the ABB RED670.

Verify time synchronization (GPS/IRIG-B) and communication links (ping, GOOSE status) remain active and error-free.

Clean ventilation slots and HMI screen (power off if needed) to prevent overheating or display issues on the ABB RED670.

Review disturbance/fault logs periodically; perform backup of configuration and settings during routine checks.

During planned outages, test key functions (e.g., differential trip simulation, zone reach) and contact Hitachi Energy/ABB support for firmware updates or persistent diagnostics on the ABB RED670.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

2. What payment methods and currencies do you accept?

To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

How many parts do you currently have in stock?

We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.