ABB 1MRK004820-BB RELAYS (REB670)

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ABB 1MRK004820-BB RELAYS (REB670) Specification

Cooling Method
Natural air cooling

Connector Type
Screw terminals, rear plug-in modules

Phase
Three Phase / Single Phase supported

Power Factor
Not Applicable (protection relay)

Application
Substation busbar differential and backup protection, control, and monitoring

Noise Level
Negligible (solid state operation)

Operating Temperature
-25C to +70C

Features
Numerical busbar protection, IEC 61850 compliant, arc protection, synchrocheck, breaker failure, advanced HMI, programmable logic, event and disturbance recording

Rated Current
Dependent on CT input, configurable (typically up to 5A/1A on secondary)

Power Supply
110-240 V AC / 80-250 V DC

Current Range
Up to 10,000 A (busbar rated current, secondary as per CT ratio)

Output Type
Relay contacts (trip/co, signalling outputs)

Output Current
Relay contact current up to 10 A (resistive load)

Working Temperature
-25C to +70C

Product Type
REB670 Busbar Protection Relay

Input Voltage
80-250 V DC / 110-240 V AC

Voltage Protection
Up to 400 kV busbar systems

Efficiency
High (industrial grade, typical for ABB relays)

Material
Metal enclosure, high-grade plastics, and PCBs

Storage Temperature
-40C to +85C

Weight
Approximately 6 to 10 kg (depending on configuration)

Communication Protocols
Ethernet, IEC 61850, Modbus, DNP3, IEC 60870-5-103

Order Code
1MRK004820-BB

Mounting Type
Flush mounting, rack mounting

Event Recording
Yes, with built-in memory for event and disturbance records

Rated Insulation Voltage
2 kV (for auxiliary circuits)

CT/VT Inputs
Yes, multiple, with configurable ratios

Display
LCD graphical display with keypad

Protection Functions
Differential protection, CT supervision, trip circuit supervision, breaker failure protection, arc flash detection

Firmware Upgrade
Remote upgrade via Ethernet/USB

Certificates
CE, IEC, RoHS compliant

About ABB 1MRK004820-BB RELAYS (REB670)

The ABB 1MRK004820-BB RELAYS (REB670) offers a rare blend of inestimable reliability and splendiferous efficiency, crowned with laureate-grade protection features for substation busbar differential and backup systems. Engineered with high-grade metals, plastics, and PCBs, its value is enhanced by unbeatable pricing. Designed for robust industrial application, it supports a variety of communication protocols, including IEC 61850 and Modbus, and features advanced functionalities such as arc flash detection, trip circuit supervision, and remote firmware upgrades. Certified CE, IEC, and RoHS compliant, it delivers flawless operation up to 400 kV.

Advanced Features for Optimal Protection

The ABB 1MRK004820-BB RELAYS (REB670) stands out for its comprehensive protection features, robust construction, and flexible usage. With flush and rack mounting options, its metal enclosure and premium plastics ensure long-lasting durability. The relay supports both single and three-phase protection, featuring differential protection, arc detection, and high-capacity CT/VT inputs. An LCD graphical display with keypad provides intuitive control, making this relay ideal for critical substation monitoring and protection tasks.

Efficient Delivery and Reliable Order Processing

Packaging and order processing for the ABB 1MRK004820-BB are carefully managed to ensure product integrity during transit. Delivery time is prompt within the main domestic markets, and flexible payment terms are available for buyer convenience. Each order is tracked from packaging to completion, ensuring reliable and efficient delivery for every customer operating in the domestic sector.

FAQs of ABB 1MRK004820-BB RELAYS (REB670):

Q: How does the ABB 1MRK004820-BB relay support substation protection?

A: The relay offers advanced differential protection, arc flash detection, breaker failure supervision, CT supervision, and trip circuit monitoring, making it ideal for comprehensive busbar and backup protection in substations.

Q: What communication protocols are compatible with the ABB 1MRK004820-BB relay?

A: This relay supports Ethernet, IEC 61850, Modbus, DNP3, and IEC 60870-5-103 protocols, enabling seamless integration into modern automation and monitoring systems.

Q: When can I expect my order for ABB 1MRK004820-BB to be delivered?

A: Once packaging and order processing are completed, prompt delivery is assured within the main domestic market, adhering to the agreed payment terms and timeline.

Q: Where is the ABB 1MRK004820-BB relay typically installed?

A: It is most commonly installed in substation control rooms, using flush or rack mounting configurations, for centralised busbar monitoring and protection.

Q: What materials ensure the durability of ABB 1MRK004820-BB relays?

A: The relay is constructed from a combination of robust metal enclosures, high-grade plastics, and precision-engineered PCBs, ensuring reliable long-term operation.

Q: How does remote firmware upgrade work on this relay?

A: Firmware upgrades can be performed remotely via Ethernet or USB interfaces, allowing for continuous enhancement of protection features without site visits.

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