Special-Purpose UPS

Special-Purpose UPS is one of the seven sub-categories under UPS Power Supply. It holds UPS power supplies specially designed and manufactured for one specific operating scenario and built to serve that scenario alone, rather than general-purpose units sized only in VA for IT racks. Each scenario gets its own dedicated series; the first is the EPS-D rolling door / shutter motor UPS, for roller shutters, garage doors, high-speed doors and industrial gates.

One scenario, one purpose-built series

A rolling shutter is an awkward scenario. The door sits idle for most of the day, then asks for a large burst of current to start a motor, several times, in a dusty or damp plant room where nobody checks the equipment. A conventional offline UPS sized by VA often trips on inrush; a conventional online UPS is expensive overkill. The EPS-D series is specially built around that duty instead: strong motor-starting capacity, cold start, surge and lightning protection, and automatic shutdown above 120% load.

Every other special scenario follows the same rule. Define the scenario first — the machine, its starting behaviour, mains quality, duty cycle, ambient conditions and how often anyone is there to service it — then engineer the inverter topology, battery, enclosure, protection and controls around it. One scenario, one purpose-built series; a unit designed for rolling doors is not simply relabelled for a different application. New scenario-specific series are added to this sub-category as they are developed. If your scenario is not listed yet, send us its specification and our engineers will confirm whether an existing platform can be adapted or a dedicated series is warranted.

The EPS-D family

See the EPS-D Series Rolling Door UPS for the full six-model specification table, product views and the downloadable catalogue.

Choosing within the EPS-D family

Start from the motor, not from the door width. Confirm the motor's rated power, starting current, supply phase, and the number of full open/close cycles the site needs during an outage. The factory catalogue also maps the family to door weight classes from 0.6 T to 3 T, which is a useful first filter but is not a substitute for the motor nameplate.

The catalogue lists two output-power rows for each model. We read the first as continuous rated output and the second as short-term motor-starting output; size the unit against the starting figure with margin, and never plan a continuous load at the peak rating. Where the door group runs on a three-phase supply, use the 30D/50D cabinets rather than paralleling single-phase units.

For IT loads, servers and network racks, use the Online UPS 1-10kVA or Lithium Battery UPS sub-categories instead. For transformer-isolated industrial systems up to 600kVA, see Industrial UPS. The full UPS Power Supply category lists every sub-category.