Data Center Power Distribution Solutions
K-Factor Transformers, UPS & LV Switchgear for Critical IT Loads
Overview
QDTB® provides mission-critical power distribution equipment for data centers, where a single millisecond of poor power quality can cost millions. Our K-factor rated dry-type transformers (K-13 and K-20) are engineered to withstand the harmonic-rich, non-linear loads of modern IT equipment, while our UPS distribution and low-voltage switchgear form a redundant, high-availability power path. From busway to rack, we deliver the transformers, UPS support and switchgear that keep data centers online with the availability and efficiency operators demand.
K-Factor Rated Transformers
K-13/K-20 rated dry-type transformers sized for harmonic-rich non-linear IT loads without derating or overheating.
UPS-Ready Distribution
Isolation and distribution equipment engineered to support redundant UPS and backup power paths.
High-Efficiency Operation
Low-loss dry-type and amorphous-core options cut data center energy cost and PUE.
Reliability & Redundancy
Fault-tolerant distribution with high short-circuit withstand for 2N and N+1 architectures.
Data Center Power System Calculator
Size and configure a complete power distribution system for your data center - transformer and UPS capacity, N/N+1/2N redundancy topology, BOM and single-line diagram.
Industry Context & Operational Characteristics
Modern data centers are dominated by non-linear IT loads (servers, storage, networking) that generate high harmonic currents. Standard transformers overheat and must be derated under these loads, which is why K-factor rated transformers are specified: they are designed to carry harmonic-rich loads at full nameplate rating without exceeding temperature limits. Power availability is the overriding concern, so data center distribution is built around redundant UPS paths, high short-circuit withstand, and efficient, low-loss equipment that minimizes both downtime risk and energy cost.
Key Operational Challenges
Power Distribution Architecture
Utility/MV Feeder → MV Switchgear → K-Factor Dry-Type Transformer → LV Switchgear → UPS → PDU/Busway → Rack (IT Load)
Core Equipment Selection
K-Factor Rated Dry-Type Transformers
Recommended Model: SCB14 / SCBH15 cast resin K-13/K-20 rated transformers (dry-type-transformers)
Core Configuration & Advantages
- K-13/K-20 rating carries harmonic-rich IT loads at full nameplate without derating
- Cast resin and VPI construction is flame-retardant, smoke-free and safe for indoor use
- Premium low-loss design improves data center PUE and cuts operating cost
- High short-circuit withstand for reliable fault isolation
Applications: Data center MV/LV transformation feeding UPS and distribution.
UPS & Backup Power Distribution
Recommended Model: Modular UPS / Industrial Frequency UPS + UPS Output Isolation Transformers
Core Configuration & Advantages
- Redundant UPS support for critical IT and facility loads
- Isolation transformers provide galvanic separation and fault isolation on UPS paths
- Modular architecture scales with IT load growth
- High-efficiency double-conversion for minimal energy loss
Applications: Critical IT, network and facility backup power paths.
LV Switchgear & Busway
Recommended Model: Low Voltage Switchgear + Dense/Fire-Resistant Busway (busway)
Core Configuration & Advantages
- High-withstand LV switchgear with selective coordination for IT protection
- Dense and fire-resistant busway for high-current, high-density rack distribution
- Compact footprint maximizes white-space for revenue-generating IT
- Modular design supports phased data center expansion
Applications: Data hall power distribution and rack power delivery.
Switchgear & Substation Selection
MV Switchgear & K-Factor Transformers
Medium-voltage switchgear and K-13/K-20 rated dry-type transformers form the harmonic-tolerant MV/LV transformation core of the data center.
UPS & Backup Distribution
UPS systems with isolation transformers provide redundant, clean power paths for critical IT and facility loads.
LV Switchgear & Busway
High-withstand LV switchgear and dense/fire-resistant busway deliver high-current power to racks with selective coordination.
Data Center Scenario Customized Enhancement
K-Factor Sizing
Transformer K-rating selected from measured/estimated IT harmonic spectrum
2N / N+1 Redundancy
Fault-tolerant distribution and UPS schemes for target availability tier
Premium Efficiency
Amorphous and low-loss cores to cut PUE and operating cost
High-Density Busway
Compact busway routing to maximize IT white-space
Fire-Resistant Options
Fire-resistant busway and flame-retardant transformers for code compliance
Power Quality Optimization
Data center IT loads are highly non-linear and harmonic-rich. K-factor rated transformers plus properly sized UPS and distribution equipment contain harmonic heating and voltage distortion, while isolation transformers on UPS paths provide fault isolation and neutral management that keep critical loads clean and available.
Key Benefits
Harmonic-Tolerant Design
K-13/K-20 transformers carry non-linear IT loads without derating or overheating
High Availability
Redundant UPS and switchgear paths support 2N and N+1 architectures
Energy Efficiency
Premium low-loss equipment cuts data center energy cost and PUE
Mission-Critical Reliability
High short-circuit withstand and selective coordination protect IT loads
Fast Build-Out
Factory-tested, modular equipment accelerates data center deployment
Technical specifications
| K-Factor Rating | K-13 / K-20 (harmonic duty) |
| Capacity Range | 100 kVA - 5,000 kVA |
| Voltage Range | Up to 35 kV / 400 V (208Y/120 V) |
| Frequency | 50 Hz / 60 Hz |
| Insulation Class | F / H (155°C / 180°C) |
| Efficiency | Up to 99% (premium efficiency) |
| Cooling | AN / AF (forced air) |
| Standards | IEEE C57.110 / IEC 60076 / UL 1561 |
Standards Compliance
Applications
Related Products
Explore QDTB® product lines available for this solution
Dry Type Transformers
K-13/K-20 rated cast resin and VPI transformers for non-linear IT loads
UPS (Uninterruptible Power Supply)
Modular and industrial-frequency UPS for critical IT and facility loads
Low Voltage Switchgear
High-withstand LV switchgear and MCC for data center distribution
Busway (Bus Duct)
Dense and fire-resistant busway for high-current rack distribution
Why Choose QDTB® for Data Center Power Distribution Solutions
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