Outdoor Ring Main Unit
Key attributes
| Brand | ABB |
| Model NO. | Outdoor Ring Main Unit |
| Rated voltage | 12kV |
| Rated normal current | 630A |
| Rated short-time withstand current | 20kA |
| Series | SafeLink CB |
Product descriptions from the supplier
The SafeLink CB is an outdoor RMU ideally suited for rural and urban distribution applications up to 13,8kV. The product is unique in terms of number of features and value it offers, making it the ideal choice for various applications in, for example, utility distribution networks, hotels, shopping centers, office buildings, airports, hospitals, tunnels and underground railways.
Product scope
Rated voltage: 12 and 13,8kV
Rated current: 630A
Rated short time current: 21 kA for 3 sec
Key benefits
Optimized safety with no exposure to live parts and built-in safety interlocks
Compact and robust design
Reliable and minimal maintenance
Fast and easy to install
Solutions including applications for remote control and monitoring
Fully extensible on both sides with option of adding standalone vacuum circuit breakers or ring switches
Key features
Internal arc classified as per latest IEC, fully type tested in STL certified test labs
Vacuum circuit breaker with high mechanical endurance
Maintenance free and complete safety for user and pedestrian with no exposure to live parts
All in built mandatory safety interlocks provided to ensure operator safety
Complete solutions including applications for remote control and monitoring
Recyclable and very low environmental impact
Application Scenario
1: Branch Power Supply for Urban and Rural Medium-Voltage Distribution Networks
Suitable for branch line power supply in 12/13.8kV urban and rural distribution networks, covering scenarios such as residential areas, commercial streets, and township markets. Its compact and robust design is suitable for limited installation spaces. The absence of exposed live parts plus safety interlocks ensure the safety of pedestrians, operation, and maintenance personnel. The low-maintenance feature reduces the operational costs of the power grid.
2: Power Distribution in Commercial Complexes and Public Facilities
Suitable for internal power distribution systems in commercial and public buildings such as hotels, shopping malls, hospitals, and office buildings. It supports remote monitoring and control, meets the 24-hour stable power supply demand of buildings, its quick installation feature adapts to the construction and decoration schedule, and the zero exposed live parts ensure safety in crowded scenarios.
3: Supporting Power Supply for Transportation Infrastructure
Used in medium-voltage power distribution links of airport terminals, urban tunnels, and subways. It complies with IEC internal arc standards, has strong weather resistance and low environmental impact. It can adapt to the expansion needs of transportation facilities through expansion modules, and the remote operation and maintenance function reduces on-site operation interference in transportation hubs.
Related Products
Related Knowledges
-
How to Implement Transformer Gap Protection & Standard Shutdown StepsHow to Implement Transformer Neutral Grounding Gap Protection Measures?In a certain power grid, when a single-phase ground fault occurs on a power supply line, both the transformer neutral grounding gap protection and the power supply line protection operate simultaneously, causing an outage of an otherwise healthy transformer. The main reason is that during a system single-phase ground fault, the zero-sequence overvoltage causes the transformer neutral grounding gap to break down. The resultingNoah12/05/2025 -
GIS Dual Grounding & Direct Grounding: State Grid 2018 Anti-Accident Measures1. Regarding GIS, how should the requirement in Clause 14.1.1.4 of the State Grid’s "Eighteen Anti-Accident Measures" (2018 Edition) be understood?14.1.1.4: The neutral point of a transformer shall be connected to two different sides of the main mesh of the grounding grid via two grounding down conductors, and each grounding down conductor shall meet the thermal stability verification requirements. Main equipment and equipment structures shall each have two grounding down conductors connected toEcho12/05/2025 -
Innovative & Common Winding Structures for 10kV High-Voltage High-Frequency Transformers1.Innovative Winding Structures for 10 kV-Class High-Voltage High-Frequency Transformers1.1 Zoned and Partially Potted Ventilated Structure Two U-shaped ferrite cores are mated to form a magnetic core unit, or further assembled into series/series-parallel core modules. Primary and secondary bobbins are mounted on the left and right straight legs of the core, respectively, with the core mating plane serving as the boundary layer. Windings of the same type are grouped on the same side. Litz wire iNoah12/05/2025 -
How to Increase Transformer Capacity? What Needs to Be Replaced for Transformer Capacity Upgrade?How to Increase Transformer Capacity? What Needs to Be Replaced for Transformer Capacity Upgrade?Transformer capacity upgrade refers to improving the capacity of a transformer without replacing the entire unit, through certain methods. In applications requiring high current or high power output, transformer capacity upgrades are often necessary to meet demand. This article introduces methods for transformer capacity upgrade and the components that need to be replaced.A transformer is a criticalEcho12/04/2025 -
Causes of Transformer Differential Current and Hazards of Transformer Bias CurrentCauses of Transformer Differential Current and Hazards of Transformer Bias CurrentTransformer differential current is caused by factors such as incomplete symmetry of the magnetic circuit or insulation damage. Differential current occurs when the primary and secondary sides of the transformer are grounded or when the load is unbalanced.Firstly, transformer differential current leads to energy waste. Differential current causes additional power loss in the transformer, increasing the load on theEdwiin12/04/2025 -
Protection Logic Improvement and Engineering Application of Grounding Transformers in Rail Transit Power Supply Systems1. System Configuration and Operating ConditionsThe main transformers at Zhengzhou Rail Transit’s Convention & Exhibition Center Main Substation and Municipal Stadium Main Substation adopt a star/delta winding connection with a non-grounded neutral point operation mode. On the 35 kV bus side, a Zigzag grounding transformer is used, connected to ground through a low-value resistor, and also supplies station service loads. When a single-phase ground short-circuit fault occurs on a line, a pathEcho12/04/2025
Related Solutions
-
Electrical House (eHouse) SolutionsReduce site complexity, improve lead timeABB eHouses are prefabricated transportable substations, designed to house medium voltage and low voltage switchgear, critical power equipment and automation cabinets.An eHouse solution is a cost effective, risk reduced alternative to conventional concrete block and brick construction. Each eHouse module is custom engineered to meet application requirements with respect to equipment layout, site footprint limitations and logistics considerations.InstallatABB04/16/2025 -
Improve speed to deployment Modular prefabricated and pre-engineered solutionsReduce site works and risk of schedule delays and cost overrunsOverview：With a complicated data center project that has short delivery timelines, prefabricated modular solutions and pre-engineered modular solutions may be the answer.Modular solutions are ideal for enterprise, colocation, edge and cloud data centers, where project replicability and expandability are critical, alongside fast deployment time.Reduce risk by leveraging prefabricated and integrated solutions:Fast track projects with pABB04/16/2025
