Industry Platform
High-current wire harnesses for hyperscale UPS battery strings, rack busbar / PDU power and 48V DC AI/GPU racks — 8 AWG–4/0 AWG copper, up to 1000V DC, LSZH-jacketed and built to UL 1973 / UL 9540 and IPC/WHMA-A-620.
Application Context
A data-center power harness carries far more current than a typical control or signal cable, and it cannot fail. UPS battery strings, rack busbars and high-density AI/GPU server rails move hundreds of amps continuously at 12V, 48V DC and battery-cabinet bus voltages up to 1000V DC. That demands high-current fine-stranded copper from 8 AWG up to 4/0 AWG, busbar links and lugs sized for voltage drop and heat rise, and LSZH flame-retardant jackets that limit smoke in an enclosed data hall. We build these as custom, pre-terminated assemblies — including battery cable for UPS strings and high-voltage DC cable assemblies for the cabinet bus.
Across a hyperscale deployment the wiring changes job at every stage: battery-string interconnects tying lithium, NiZn and VRLA cells into the UPS cabinet, BMS sense harnesses reporting per-cell voltage and temperature, busbar and PDU power harnesses distributing power down the rack, and high-current 48V DC harnesses feeding dense GPU and accelerator racks. Hot-swap matters in a live aisle, so we factory-terminate Anderson power connectors and Powerlok, and use TC-ER certified tray cable for exposed runs — all built to UL 1973 / UL 9540 battery-system requirements and IPC/WHMA-A-620 workmanship.
Applications
High-current harnesses for UPS battery systems and high-density AI/GPU racks.
Battery-string interconnect harnesses and lugged jumpers that tie VRLA, lithium-ion and NiZn cells into the cabinet bus of a data-center UPS. Fine-stranded copper absorbs the vibration and repeated maintenance handling that rigid bar links cannot, while keeping voltage drop across the string negligible.
High-current 48V DC and 12V power harnesses that feed dense GPU and accelerator racks running H100/MI300-class training and inference loads. Conductors are sized for minimal voltage drop at sustained high amperage so the rail holds under thermal load and transient draw.
Busbar links and PDU power harnesses that distribute power down the rack from the UPS output to vertical and horizontal PDUs. Pre-terminated Anderson and Powerlok connectors let technicians hot-swap without field crimping in a live aisle.
Combined power and BMS sense harnesses for lithium, NiZn and VRLA battery cabinets. Cell-voltage and temperature sense taps run alongside the high-current path in one tested assembly, so the battery management system sees every cell across the string.
Engineering Challenges
Conductor, lug and busbar-link sizing validated for voltage drop and heat rise on 48V DC busses and battery-string interconnects — engineered to targets, not just nominal ampacity tables.
Anderson SB/SBS and Powerlok terminations factory-crimped and tested — including contact-resistance checks — so technicians hot-swap modules instead of field-crimping in a live aisle.
LSZH flame-retardant jackets to limit toxic smoke and corrosive gas, paired with TC-ER tray-cable construction so the same assembly is rated for exposed-run installation.
UL 1973 (stationary battery) and UL 9540 (energy storage) requirements that data-center and BESS integrators design to, with IPC/WHMA-A-620 workmanship under our ISO 9001 quality system.
Technical Capabilities
UL 1973 / UL 9540 and TC-ER construction with high-current copper and LSZH jackets, validated for sustained DC service in UPS and AI/GPU power systems.
Manufacturing Process
Quality & Testing
Every data-center power harness gets continuity, polarity and dielectric-withstand testing, plus contact-resistance checks on high-current Anderson and Powerlok terminations — all documented for lot-level traceability before it ships.
Why WHP
Power harnesses engineered for uptime, hot-swap and the standards integrators design to.
Conductor sizing, lug selection and busbar links validated for sustained high amperage on 48V DC GPU rails and battery-string interconnects — engineered for voltage-drop and heat-rise targets, not just nominal ampacity tables.
Battery-cabinet wiring built to the UL 1973 (batteries for stationary use) and UL 9540 (energy storage systems) requirements that data-center and BESS integrators design to, alongside TC-ER tray-cable construction.
Every harness is crimped, lugged and assembled to IPC/WHMA-A-620 workmanship standards under our ISO 9001 quality system — the acceptance criteria that mission-critical power infrastructure demands.
Continuity, polarity and dielectric-withstand testing on every assembly, plus contact-resistance checks on high-current Anderson and Powerlok terminations before it ships to your integration line.
Our UPS and battery harnesses are built to the battery-system and workmanship standards data-center and BESS integrators require.
FAQ
OEM Program Entry
High-current UPS, battery and 48V DC rack harnesses, 100% electrically tested, with 7–10 day samples. Talk to our power-systems specialists.
Related Capabilities
Custom cable assembly and harness services that pair with data-center UPS and AI-rack power programs.
Case Studies
Real, anonymized programs we delivered in this industry — the actual challenge, solution, and numbers.
