20 kVA online UPS in India: three-phase specs, N+1 redundancy, DG compatibility, and the cost factors that matter for mid-large facilities.
Buying Guides
At 20 kVA, a UPS is almost always protecting something whose downtime is expensive — a server room, a diagnostic wing, a process line, or a network core. The specification questions change accordingly: this is three-phase territory, redundancy starts to matter, and generator compatibility becomes essential. Here is what to look for in a 20 kVA online UPS in India, and what drives the cost.
20 kVA Is Three-Phase Territory
Paradyne's 20 kVA online UPS is a three-phase system: it accepts a three-phase 300-450V input, delivers a regulated 400V ±1% three-phase output, and runs on a 360V DC bus. Three-phase distribution balances the load across phases, lowers per-phase current, and reduces conductor heating — important at this power level. It remains a true double-conversion online UPS with zero transfer time, sub-3% harmonic distortion, an output power factor of 0.8 lagging to unity, and 110% overload for 10 minutes.
Redundancy: When One Unit Isn't Enough
For loads that genuinely cannot drop, a single UPS is a single point of failure. Two common approaches:
N+1 with a static transfer switch — a static transfer switch can shift the load between sources in under 6 ms, enabling maintenance without dropping the load.
Parallel / dual-bus — for the most critical sites, covered in our large three-phase UPS guide.
The design follows the IEC 62040 framework and the redundancy practice in IEEE standards for UPS systems; for the full data-center view see UPS for data centers.
Generator Compatibility
Most 20 kVA installs sit behind a DG set for extended outages. The UPS must accept generator output cleanly — Paradyne's input frequency tolerance of 50 Hz ±10% is generator-compatible, so the UPS rides on DG power without nuisance transfers to battery. Specify this explicitly if your site runs on a generator during long outages.
What Affects Your Configuration
Battery bank — backup duration is the biggest lever on size and weight.
Redundancy architecture — N+1 or parallel adds units and switchgear.
Partial-load efficiency — at 24/7 operation, efficiency at the 30-50% load band you will actually run at matters for the electricity bill.
Service SLA — response-time guarantees and spares assurance, especially for tenders.
Tell us your load, redundancy requirement, and whether a generator is involved, and we will specify the right 20 kVA configuration.
