A request for a 20kVA UPS leaves several design decisions unanswered. The quotation needs to establish output power, input/output phase, batteries and installation scope before the capacity label becomes useful.
Specify input and output separately
The BR931 15–20kVA tower range lists a 20kVA/20kW option with three-phase input and single-phase output. This is a 3/1 arrangement. If your site needs three-phase output, discuss an appropriate 3/3 option such as the VI933 range. Confirm the exact variant rather than treating every 20kVA product as interchangeable.
Document the proposed load
List equipment, real and apparent power, operating pattern and planned additions. Record existing distribution and any requirement for separate circuits. A qualified review should determine compatibility and the applicable operating limits.
Ask for batteries against a defined objective
State required minutes at the agreed load and the purpose of backup. Ask for battery quantity, capacity, chemistry, DC arrangement, charger settings and runtime assumptions. Runtime at one load is not a promise at a higher load or after battery ageing.
Include site work in the comparison
Record equipment and battery space, access route, ventilation, cable routes, electrical protection, earthing and commissioning windows. Confirm who supplies and installs each part. Ask what handover records and support arrangements will apply.
20kVA quotation checklist
Record exact model; rated kVA and kW; input/output phase; connected load; runtime objective; batteries; optional monitoring; site postcode; installation scope; exclusions; warranty and dated commercial terms.
Does 20kVA always mean 20kW?
Only where the exact model’s rated output supports that relationship. Check the current kVA and kW ratings in its documentation.
Is the BR931 range three-phase output?
The referenced 15–20kVA brochure specifies three-phase input and single-phase output. State both explicitly in the project brief.
Read three-phase UPS selection and request a project quotation.