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High-Frequency Rack-Mount UPS

High-Frequency Rack-Mount UPS — Midsize Three-Input Single-Output Rack for Branches

  • Model: YDC-SDJJ010 / YDC-SDJJ015 / YDC-SDJJ020
  • Specification: 10/15/20kVA
  • Size: 438×680×87mm
  • Weight: 19.4/19.6/20.8Kg
  • Description: Midsize High-Frequency Rack-Mount UPS — three-phase input and single-phase output online double-conversion protection in a rack-mount chassis for mid-size enterprise branches and network data centres.
  • Online ordering

High-Frequency Rack-Mount UPS — Midsize Three-Input Single-Output Rack for Branches

Many real-world branch server rooms, mid-size network data centres, regional finance back-offices, and communication rooms are not three-phase top to bottom. The supply side is three-phase because that is what the building delivers; the load side is single-phase because that is what the IT stack actually consumes. The midsize rack-mount tier takes true three-phase in and delivers clean single-phase out, with DSP-based online double-conversion protection — all in a rack-mount chassis that sits neatly next to the IT stack.

Built for the racks where the supply is three-phase and the load is single-phase

When the building delivers three-phase but the IT stack is single-phase, the wrong UPS ends up under-using one phase and over-stressing another. The midsize tier takes three-phase in and converts it correctly, so the upstream distribution stays balanced and the IT load sees a clean single-phase sine. That is the right architecture for the room — and it lives happily in a standard rack next to the IT stack.

Where it makes the difference

  • Mid-size enterprise branches and regional headquarters with three-phase supply and single-phase IT.

  • Government branch offices and public-sector annexes with three-phase service entrances.

  • Mid-tier finance and insurance branch operations.

  • Mid-size commercial and educational network rooms with three-phase distribution.

  • Mid-size industrial automation rooms that need clean single-phase control power.

What you gain

  • A rack-mount chassis that takes three-phase in and delivers clean single-phase out, online double-conversion protected.

  • True three-phase input handling that keeps the upstream distribution balanced and stable.

  • An ultra-wide input window that holds the load through brownouts, generator drift, and dirty mains.

  • High online efficiency with intelligent eco-mode behaviour at steady state.

  • Comprehensive protection: overload, short-circuit, over-temperature, and intelligent battery management.

  • Standard remote interfaces that expose every important parameter to your DCIM, BMS, or building-management stack.

  • Front-serviceable components and a friendly maintenance model that respects the realities of branch sites.

How the platform works for you

DSP-based digital control drives the three-phase rectifier and the single-phase inverter. The chassis is shallow enough for a standard rack and the airflow is engineered for in-rack serviceability. Intelligent battery management handles VRLA or lithium banks, charges adaptively, and predicts runtime accurately. Remote interfaces make a small team operating many branches much more efficient — and the rack-mount form keeps the floor clean.

Service, integration, and lifecycle

Midsize rack-mount units are supported by the same global service network as the flagship tier, with regional spares and remote-diagnostic options that keep truck rolls short. Integration with DCIM and BMS is straightforward, firmware updates are routine, and the control board is upgradable across generations — extending the useful life of the rack you specify today.

Frequently Asked Questions

  • Why three-phase input and single-phase output? Many real-world rooms have three-phase supply but single-phase IT; this tier matches that topology directly.

  • Does this help upstream power quality? Yes — true three-phase input handling keeps the building's distribution balanced.

  • What about generator power? The wide input window handles generator drift and slow hand-offs gracefully.

  • What battery chemistry is supported? The charger and management adapt to traditional or lithium chemistries.

  • How loud is it next to a workspace? Acoustics are tuned for occupied office-adjacent rooms.

  • Does it integrate with our monitoring stack? Standard remote interfaces expose parameters to the leading platforms.

  • Is service straightforward at branch sites? Front-serviceable components plus regional spares keep service visits short.

  • What warranty and service options exist? A standard multi-year warranty with extended and on-site plans.

Information Security and Data Protection

Role-based access, audit-friendly logs, and encrypted remote communication protect operational data where supported by your management platform. Telemetry stays inside your network boundary by design.

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