Data Centers

Automation, Panel, SCADA, and Contracting Needs for Data Centers

Data centers are highly controlled, mission-critical facilities designed to deliver continuous IT uptime, predictable environmental conditions, and strong electrical resilience. Unlike general industrial plants, the “process” in a data center is not a manufacturing line but a tightly managed utility ecosystem: utility incomers, MV/LV distribution, UPS systems, battery strings, diesel generators, ATS/STS schemes, chillers, CRAH/CRAC units, pumps, fire detection/suppression, leak detection, access control, and monitoring networks. The engineering challenge is to keep power quality, thermal stability, and maintainability within strict limits while preserving redundancy and cyber resilience.

Typical Facility Profile

A typical enterprise or colocation data center includes one or more of the following electrical and mechanical zones: medium-voltage incoming supply, transformer yard or indoor transformers, LV switchboards, UPS rooms, battery rooms, generator plant, fuel systems, cooling plant, white space, and a central monitoring/control layer. Tiered redundancy is common, with N+1, 2N, or distributed redundant architectures. Operationally, the facility must tolerate maintenance without interruption, and in many cases must support concurrent maintainability and fault tolerance.

From an engineering perspective, the dominant design drivers are:

• High availability and low downtime risk
• Power quality and fast transfer behavior
• Thermal stability and efficient cooling control
• Remote monitoring, alarming, and incident response
• Cybersecurity and secure remote access
• Scalability for phased expansion

Which Services Matter Most

Service	Importance in Data Centers	Why It Matters
SCADA / Monitoring	Very high	Centralized alarms, trends, energy reporting, asset visibility, and incident response. Essential for MEP systems and remote operations.
Panels	Very high	Switchboards, MCCs, PLC panels, BMS panels, generator control panels, and remote I/O cabinets form the backbone of reliable operation.
Automation	High	Controls chillers, pumps, valves, ATS logic, generator sequencing, fuel management, and environmental control loops.
Contracting / Installation	Very high	Precision installation, testing, commissioning, cable management, segregation, labeling, and energization planning are critical to uptime.

In practice, all four services matter, but SCADA and panels are often the most visible enablers of operational resilience, while contracting quality determines whether the design intent is actually achieved in the field. Automation is essential for plant efficiency and failover logic, but it must be paired with robust panels and disciplined installation.

Mandatory and Recommended Standards

Electrical and Panel Standards

• IEC 61439-1 and IEC 61439-2 for low-voltage switchgear and controlgear assemblies; verify temperature rise, dielectric performance, and short-circuit withstand.
• IEC 60204-1 for electrical equipment of machines where packaged plant skids or mechanical assemblies are involved.
• IEC 60529 for IP ratings of enclosures.
• IEC 60947 series for switchgear and controlgear components.
• IEC 60364 for LV installations, especially protective measures, cable sizing, and earthing.

Automation and SCADA Standards

• IEC 61131-3 for PLC programming languages and application structure.
• ISA-95 for integration between control and enterprise layers.
• ISA-18.2 for alarm management lifecycle and rationalization.
• IEC 62443 series for industrial cybersecurity, especially system design and security levels.

Fire, Generator, and Facility Standards

• NFPA 70 (NEC), especially Article 645 for information technology equipment rooms where applicable in North America.
• NFPA 75 for protection of information technology equipment.
• NFPA 70E for electrical safety in the workplace.
• NFPA 110 for emergency and standby power systems.
• NFPA 72 for fire alarm and signaling systems.

Good engineering should also reference IEC 60364-4-41 for protection against electric shock, IEC 60364-5-52 for cable selection and installation, and IEC 61000 series for EMC compatibility. Where batteries are used, battery room ventilation, detection, and segregation must be addressed according to local code and manufacturer requirements.

Regulatory Framework

For EU projects, data centers typically fall under several regulatory layers. CE marking may apply to individual products and assemblies, and the following directives and regulations are often relevant:

• Low Voltage Directive 2014/35/EU for electrical equipment within voltage limits.
• EMC Directive 2014/30/EU for electromagnetic compatibility.
• Machinery Directive 2006/42/EC, or the applicable successor regime when machinery is placed on the market, for packaged mechanical systems such as pump skids, cooling units, and generator auxiliaries.
• ATEX 2014/34/EU only where explosive atmospheres exist, for example fuel handling or certain battery/fuel vapor scenarios after risk assessment.
• NIS2 Directive (EU) 2022/2555 for cybersecurity governance in essential and important entities, especially where the operator or service provider falls within scope.

For North-American export or hybrid projects, design often needs to align with NEC/NFPA requirements, UL-listed equipment expectations, and local AHJ interpretation. Typical references include NEC Article 645 for IT rooms, Article 700/701 for emergency and legally required standby systems, and Article 708 for critical operations power systems where adopted. UL 508A is commonly relevant for industrial control panels in the U.S. market.

Environmental and Operational Constraints

Data centers are usually indoor, clean, and temperature-controlled, but the engineering margin is still tight. Enclosures should normally target at least IP54 or IP55 in plant rooms with dust or cleaning-water exposure, and higher ratings may be needed for outdoor equipment. In North America, NEMA 12, NEMA 3R, or NEMA 4/4X are selected based on location and washdown/corrosion exposure.

Ambient temperature, humidity, and condensation control are important for panels and electronics. Design assumptions must reflect actual room conditions, not just “air-conditioned” labels. Power electronics and PLC/SCADA hardware should be selected with adequate derating at elevated ambient temperatures. EMC is a major issue because data centers combine sensitive IT loads, switching power supplies, VFDs, UPS systems, and long cable runs. Separation of power and signal cables, shield termination strategy, equipotential bonding, and surge protection should be engineered from the start.

Hazardous areas are uncommon in the white space, but may exist around diesel fuel storage, battery charging areas, or chemical treatment zones. If hazardous classification applies, equipment selection and installation must follow the relevant zone/class division requirements and be explicitly documented.

What Good Engineering Looks Like

Excellent data center engineering starts with a clear single-line philosophy, defined redundancy topology, and a disciplined cause-and-effect matrix for alarms, transfers, shutdowns, and failover. Controls should be deterministic, documented, and maintainable. Every panel should have proper heat dissipation analysis, short-circuit rating verification, and wiring segregation between power, control, communications, and safety circuits.

SCADA should provide role-based access, event logging, time synchronization, trending, and alarm prioritization. ISA-18.2 principles should be used to avoid alarm flooding. Cybersecurity should be designed in accordance with IEC 62443, with network segmentation, secure remote access, account management, and patching strategy. For NIS2-relevant operators, governance, incident handling, and supply-chain security must also be considered.

Contracting quality is equally important: factory acceptance testing, site acceptance testing, pre-energization checks, torque control, label consistency, cable test records, insulation resistance tests, protection relay tests, and commissioning scripts should be mandatory. In data centers, “nearly correct” is not acceptable; every interlock and sequence must be repeatable and traceable.

Comparison of Typical Equipment and Standards

Equipment	Main Function	Typical Standards / Codes	Notes
LV switchboard	Power distribution	IEC 61439-1/-2, IEC 60947, IEC 60364	Verify temperature rise, short-circuit rating, and form of separation.
UPS system	Ride-through and power conditioning	IEC 62040 series, NFPA 70, NFPA 75	Coordinate bypass, batteries, and maintenance isolation.
Generator control panel	Emergency power sequencing	NFPA 110, IEC 60204-1, IEC 61131-3	Test start, load acceptance, and synchronization logic.
PLC / BMS panel	Plant automation	IEC 61131-3, IEC 62443, IEC 61439	Use secure architecture and maintainable I/O mapping.
SCADA server / HMI	Monitoring and alarming	ISA-95, ISA-18.2, IEC 62443	Implement historian, alarms, redundancy, and access control.
Outdoor auxiliary panel	Field control	IEC 60529, NEMA 3R/4X, IEC 61000	Consider corrosion, UV, condensation, and surge exposure.

For data centers, the best outcome comes from integrated engineering: compliant panels, resilient automation, secure SCADA, and installation discipline that protects uptime from the first day of operation. The facility may look like a building, but it must be engineered like a critical utility plant.