Before asking for a three-phase UPS quotation, define the required input and output arrangement. Three-phase input does not automatically mean three-phase output. RAPSTECH lists both 3/1 and 3/3 configurations across its product ranges.
Compare input and output explicitly
| Configuration | What it describes | Listed RAPSTECH examples |
|---|---|---|
| 3/1 | Three-phase input, single-phase output | BR931 10kVA; BR931 15–20kVA; SH931 10–40kVA |
| 3/3 | Three-phase input, three-phase output | VI933 10–60kVA; VI933M 10–150kVA; VI933T 80–200kVA; SH933 10–400kVA |
These are catalogue families, not confirmation that a particular variant suits your facility. Compare the exact model, output requirements, operating load and installation arrangement.
A 20kVA requirement needs a configuration review
The BR931 15–20kVA tower page lists a 20kVA option with three-phase input and single-phase output. Where three-phase output is required, review the appropriate VI933 rack/tower range or other suitable listed families with the engineering team. Do not substitute one output arrangement for another because both quotations say 20kVA.
Review the load and the site
Send the equipment schedule, measured or documented kW and kVA, required output, existing supply information, operating sequence and growth plan. The project review should cover distribution, protection, earthing, cable routes, installation access and battery accommodation. Qualified site personnel should confirm electrical readiness.
Define runtime and lifecycle scope
State the required duration at the agreed connected load and explain the continuity objective. Ask for the battery configuration, runtime assumptions and model-specific charger compatibility. Confirm delivery, placement, installation, commissioning, handover, warranty and maintenance responsibilities separately.
Three-phase UPS questions
Does 3/1 describe a single-phase UPS?
It describes three-phase input and single-phase output. Writing both sides of the configuration avoids ambiguity.
Does modular mean redundant?
No. Module capacity, installed quantity, usable output and the required redundancy arrangement must be specified for the system.
Is a three-phase model automatically suitable for industrial equipment?
No. Application compatibility and environmental conditions require review. Start with industrial UPS planning where relevant.
Request a three-phase UPS review with your site city, load, phase arrangement and required backup time.
HYDERABAD HEADQUARTERS · TWIN-CITY SERVICE & REGIONAL COVERAGE
Hyderabad & Secunderabad. At the heart of RAPSTECH.
From our Hyderabad headquarters in Begumpet, we coordinate UPS systems, batteries, inverter solutions and AMC for Secunderabad and Hyderabad, with service coverage in Visakhapatnam (Vizag) and Vijayawada.
Share your site, load and backup objective to plan supply, installation and ongoing support with our headquarters team.