A 5 kVA UPS is the workhorse size for small server rooms, clinics, branch offices, and compact industrial control panels in India. It is big enough to matter and small enough that buyers often under-spec it. This guide covers what a 5 kVA online UPS actually handles, the battery options behind it, how to size backup, and what drives the price.

What a 5 kVA UPS Powers

At an output power factor of 0.8, a 5 kVA online UPS delivers roughly 4 kW of real power. Typical loads:

• A small server rack — a few servers, a switch, and a storage array.

• A clinic or diagnostic room with imaging peripherals and workstations.

• A branch office with 15-20 PCs, networking, and billing terminals.

Use your real connected watts and a sensible margin — see how to calculate UPS capacity. If your load is lighter, a 1-2 kVA unit may be enough; if heavier, step up to 10 kVA.

Why Online at 5 kVA

At this size most loads are business-critical, so a true double-conversion online UPS is the right call. Paradyne's 5 kVA online UPS is single-phase, accepts a 160-260V input window, outputs a tightly regulated 230V ±1% true sinewave with zero transfer time, holds harmonic distortion below 3%, and tolerates 110% overload for 10 minutes. The inbuilt isolation transformer adds galvanic separation for sensitive equipment.

Battery Options and DC Bus

A 5 kVA Paradyne online UPS is offered across DC bus voltages of 144V, 180V, or 192V. The DC voltage and the battery Ah together determine backup time and the number of batteries in the string. Higher Ah batteries (or an external bank) extend runtime, but the charger must support the larger bank — never bolt on extra batteries without checking charger capacity. The battery-sizing method is covered in how to calculate UPS battery backup time, and the engineering approach in IEEE 1184 battery sizing.

Sizing Backup Time

Decide how long you need to ride through an outage or bridge to a generator. A few minutes for safe shutdown needs a modest battery; an hour of runtime at full load needs a substantial bank and the floor space and ventilation for it. Be honest about partial-load behaviour — most 5 kVA installs run well below full load, which extends backup but also means you should size batteries for the real load, not the nameplate.

What Affects Your Configuration

• Battery capacity — usually the largest single variable, set by your backup target.

• Backup duration — longer runtime means more batteries and a bigger charger.

• Isolation transformer and build — standard on Paradyne online units for clean, isolated output.

• Service and warranty terms — comprehensive cover and local support matter most over the unit's working life.

Share your load list and target backup time and we will size the battery bank and quote the exact 5 kVA configuration you need.