Online UPS Systems: China OEM Sourcing
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Online double-conversion UPS systems (VFI topology, IEC 62040 class) continuously rebuild the AC waveform, giving zero transfer time and clean output for servers, telecom, and industrial loads. China OEMs offer these in 1kVA to 10kVA tower and rack-mount formats, with the battery string and runtime being the main cost driver, not the inverter. Watch the difference between true online (VFI) and cheaper line-interactive units that get relabelled as 'online' in catalogues.
When you OEM a UPS from China, verify the topology is genuinely double-conversion, the transfer time is truly zero, and the unit meets IEC 62040-1 safety and IEC 62040-3 performance classes. We check the inverter rating, battery brand, and a real load/transfer test on samples.
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FAQ
What MOQ and price range applies to online UPS from China?
OEM MOQs commonly start around 50-100 units for a configured model, with per-unit price driven mostly by kVA rating and battery capacity. Tooling-free rebranding of an existing platform lowers the entry barrier.
How do I confirm a UPS is true online double-conversion?
Check for VFI classification under IEC 62040-3 and a stated zero transfer time. On samples, measure output during a mains cut; a true online unit shows no break, while line-interactive units show a few milliseconds.
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