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Data Centers

Reliable Power Distribution for Data Centers

Data centers run on non-linear loads. Server power supplies, uninterruptible power systems, and switching equipment draw current in pulses rather than smooth sine waves, generating harmonic distortion that overheats neutrals and stresses upstream equipment. Power density, redundancy requirements, and 24/7 continuous operation compound the engineering challenge. Rex designs and manufactures K-factor rated transformers, harmonic mitigating transformers, and medium-voltage cast coil units configured for the demands of data center electrical infrastructure — from edge computing and colocation facilities to hyperscale and high-density computing environments.

Features and Benefits

K-factor rated construction. K-13 through K-30 designs with reinforced neutrals, parallel secondary conductors, and oversized cores handle the heating effects of harmonic-rich IT loads without derating or premature insulation failure.

Harmonic mitigation. Harmonic mitigating transformers (HMTs) cancel triplen harmonics generated by single-phase server power supplies, reducing total harmonic distortion at the upstream system and reducing neutral current to manageable levels.

High efficiency. Built to meet or exceed NRCan and DOE minimum efficiency standards. Lower no-load losses reduce continuous heat output in conditioned IT spaces.

Medium-voltage options for high-density applications. Cast coil and VPI/VPE transformers up to 35 kV class support hyperscale and high-density data center designs that step down from utility medium voltage directly to IT-room distribution voltages.

Continuous-duty thermal design. Engineered for 24/7 operation under sustained load, with thermal margins appropriate to the redundancy and failover requirements of critical-power architectures.

Other Industries We Serve

Customization and Engineering Support

Load profile matching. K-rating, kVA, and impedance specified to the actual IT load mix, UPS topology, and harmonic content of the facility — not a generic catalog default.

Redundancy and footprint planning. Form factor, terminal arrangement, and cooling configuration aligned to the rack density, hot aisle / cold aisle layout, and N+1 or 2N redundancy requirements of the design.

Coordination with upstream and downstream equipment. Compatibility with UPS systems, switchgear, automatic transfer switches, and downstream PDUs for clean integration into the critical power chain.