20kVA Online Double Conversion UPS — Industrial Grade

20kVA Online Double Conversion UPS — Enterprise and Industrial Power Protection

The 20kVA industrial UPS is specified for South Africa’s most demanding power protection applications — large data centres, hospitals, manufacturing plants, broadcast facilities, and enterprise server rooms where power interruption is not an option. With 18kW of output power, unity power factor (PF 1.0), and industrial-grade IGBT technology, this is a top-specification commercial UPS.

Key Specifications

• Capacity: 20kVA / 18,000W
• Output Power Factor: 1.0 (unity)
• Topology: Online Double Conversion, IGBT-based
• Transfer Time: Zero (0ms)
• Input: Three-phase 380V or single-phase 220V (specify)
• Input Harmonic Distortion: Less than 3% THDI
• Output: Pure sine wave, regulated ±1%
• Online Efficiency: Up to 97%
• ECO Mode Efficiency: 99%
• Batteries: Expandable internal + external battery cabinet
• Parallel: Up to N+1 or N+N (80kVA total)
• Communication: SNMP, Modbus TCP, dry contact, EPO, email alerts
• Certification: IEC 62040-3 Class 1, CE, CB
• Warranty: 3 years

Unity Power Factor — More Usable Watts

Legacy UPS systems have a 0.8 power factor, meaning a “20kVA” UPS only delivers 16kW. This unit’s 1.0 unity power factor means 20kVA = 18kW of usable power — 12.5% more real power for the same kVA rating. For data centres with dense high-efficiency servers, unity power factor UPS systems deliver significant CAPEX savings.

Low Harmonic Input

IGBT-based rectifiers limit input harmonic distortion to below 3% THDI — far below the 15–30% THDI of older SCR-based UPS systems. This dramatically reduces the risk of overheating transformers, generators, and wiring in the facility — an important consideration when running on a backup generator during extended load shedding.

FAQ

Is this UPS suitable for a hospital or medical facility?

Yes. The 20kVA UPS meets medical-grade power protection requirements, including zero transfer time, unity power factor, and low harmonic distortion. For life-critical equipment, two units in N+1 parallel configuration with a manual bypass is the recommended configuration.

How long can this UPS run on battery during load shedding?

Internal batteries provide approximately 3–5 minutes at full load. External battery cabinets sized for 1, 2, or 4 hours of runtime are available. A 2-hour external battery setup for this UPS typically costs R15,000–25,000 additionally, depending on battery specifications.

Does the 20kVA UPS include a bypass switch?

Yes. An internal static bypass switch automatically transfers to raw mains if the UPS inverter fails, ensuring the load is never dropped. A manual maintenance bypass is included for servicing the UPS while keeping equipment powered.