How Data Centers Connected to the Grid at medium voltage

Data centers connect to the electrical grid at the medium voltage (MV) level, typically between 4kV and 35kV, through a dedicated substation and specialized power infrastructure. The connection process involves several key components and engineering steps designed for high reliability and power quality.

Connection Process:

1. Utility Coordination: Data center developers coordinate with the local utility company to determine the available capacity and optimal interconnection point on the grid. For large data centers, the power demand (often tens or hundreds of megawatts) may require a direct connection to the high-voltage transmission grid first, which is then stepped down to MV at a utility substation.
2. Dedicated Substation/Service Entrance: The utility provides one or more diverse MV feeds to a dedicated on-site substation or main electrical service entrance within the data center facility. This infrastructure is physically separated and often includes redundant pathways (2N architecture) to eliminate single points of failure.
3. MV Switchgear: Upon entering the facility, the power first goes through medium-voltage switchgear. This equipment is the foundation of the internal power distribution system, containing components like circuit breakers, meters, and protective relays to control the power flow, isolate faults, and ensure safety.
4. Internal Distribution & Conditioning: The low-voltage power is distributed through the facility's power distribution units (PDUs) and other systems. The power is further conditioned using UPS systems to bridge the gap during outages and backup generators (typically diesel or potentially fuel cells) are connected to the MV or LV network to provide power during prolonged utility interruptions.

Key Components

1. Medium Voltage Cables: High-conductivity, heavily insulated cables (rated for 1kV to 35kV) designed for durability and minimal power loss over distance.
2. Switchgear: Metal-enclosed assemblies of switches, circuit breakers, and protective devices that manage and safeguard the MV power flow.
3. Transformers: Essential for changing the voltage levels efficiently and safely. Dry-type transformers are often preferred in modern data centers.
4. Protection Systems: Comprehensive grounding systems and arc flash protection measures are implemented to ensure the safety of personnel and equipment. 

Operating at the medium voltage level within large data centers is more efficient (due to lower current and reduced energy losses) and allows for more scalable and robust power infrastructure compared to low-voltage-only approaches.

Medium Voltage (MV) cable lugs are a critical element in the reliable performance of electrical distribution networks. At Jera Line, we specialize in designing and manufacturing high-quality MV cable connectors that ensure safe and efficient connections for transformer structures in underground power lines.

What Key Prouducts of MV cable Lugs Does Jera Line produce?

Product code:                 Cable size,mm2  

CLBVzT-36-2-16-95                   16-95

CLBVzT-36-2-25-150                  25-150

CLBVzT-36-2-70-240                  70-240

CLBVzT-36-2-120-300                120-300

CLBVzT-36-3-185-400                185-400

CLBVzT-36-3-400-630                400-630

CLBVzT-36-4-630-1000               630-1000

Features:

• Expanded cable range from 16-1000mm2
• Quick and easy installation, only need to tighten the bolts and shear head off by hex key
• Made from tin-covered aluminum alloy, compatible with both aluminum and copper cables
• Suitable for both low and medium voltage applications up to 36KV
• Manufactured according to standard lEC-61238-1-3
• Produced directly in China, offering a cost-effective solution

Applications:

1. Power Distribution Networks: Connects cables in electrical substations and distribution panels for efficient power distribution.
2. Transformer Connections: Provides a secure and reliable connection between large cables and transformers.
3. Switchgear and Control Panels: Connects cables to circuit breakers, busbars, and other equipment within switchgear and control panels.

Why Choose Jera Line as Your MV cable connectors Supplier?

1. Direct Manufacturer Advantage

 Jera Line established in 2012 which manufactures solutions of products for cable infrastructure location in China, where we design, produce,and provide professional solution about the power distribution in electrical industry. Jera Line uses over 5,000㎡ of facility area for manufacturing, with large-scale production facilities such as moulding and tooling machines, plastic injection machines, drilling machines, cutting machines, and others.

2.Wide Range of Cable Size Application

Jera Line offers a wide range of Medium-Voltage mechanical shear head bolt lugs(from16-1000mm2 )to suit various cable sizes requirements.

3.Third-party test reports

Jera Line cooperate with a big EU laboratory which can help to do professional test and issue an authoritative report. Our products comply with international standards such as IEC61238-1.

4. OEM and ODM capabilities

OEM policy crucial for global manufacturing. Jera Line, we provide customization Options per project requests, we do product development and research, laser marking and carton box stickers based on customer logos.

5. Quality & Reliability:

Jera Line’s , we own our in-house laboratory testing equipment to test ensuring the products are in high quality and reliability.and type tests are made by 3rd party international lab.

6. Global Experience

 Our company boasts extensive global experience, having successfully partnered with clients across multiple continents. With a deep understanding of diverse markets, regulatory environments, and cultural nuances, we provide tailored solutions that meet the unique needs of each region.  Jera line has exported low voltage accessories more than 30 countries, and received good feedback from customers in terms of quality.

Conclusion：

Medium-voltage grid connections are the backbone of modern data center power systems. They provide high capacity, efficiency, scalability, and reliability, enabling facilities to meet the demanding expectations of the digital era.

We welcome your inquiries and be glad to provide a tailored solution.