What happens when the mains fails
The battery is already on the DC bus. Nothing switches, so the load sees no break.
On mains
- Input
- Present
- Battery
- Float charge
- Output
- On inverter
- Transfer
- 0 ms
- Input
- 110–300 V (1Ph)
- ECO mode
- ≥98.5%
Online, double conversion
Industrial Online UPS, 1–800 kVA
Built for unstable grids. Double-conversion uninterruptible power supply systems from our factory in Nantong, for plants, data rooms and projects.
1–800kVAOnline double conversion
0msMains-to-battery transfer
110–300VSingle-phase input window
CEEN IEC 62040-1 and 62040-2
NantongOwn factory, Jiangsu, China
Online first, built for projects
1 kVA in a control cabinet to 800 kVA for a whole plant. All double conversion, all available under your brand.
Certified and already shipped
Ready for a consultant or a tender file.
Safety and EMC
CE · EN IEC 62040-1
- High-frequency online, 1–600 kVA
- LVD + EMC
Exported to
Indonesia · Philippines · Singapore
- 220–240 V
- 380–415 V
- 50 / 60 Hz
Monitoring
SNMP · Modbus · dry contact
LVD · Three-phase online, to 600 kVA
EMC · Three-phase online, to 600 kVA
LVD · Three-in, single-out online, 10–30 kVA
EMC · Three-in, single-out online, 10–30 kVA
Transformer-based or high-frequency?
Same double conversion. One transformer makes the difference. Full comparison
Transformer-based
Industrial UPS, 1–800 kVA, built to project spec
- Grid
- Weak, unstable or noisy supply
- Load
- Motors, drives, inductive loads with high inrush
- Isolation
- Galvanic isolation between inverter and load
- Output PF
- 0.8 (three-phase)
High-frequency
Online UPS, 1–600 kVA, CE tested
- Grid
- Stable to moderate supply
- Load
- Server rooms, IT, telecom, medical equipment
- Efficiency
- Up to 95.5%, ECO mode ≥98.5% (three-phase)
- Input PF
- ≥0.99
Where our systems run
Where a dropped cycle means scrap, a trip or lost data.
Built in Nantong, designed in Nanjing
Own production base and R&D center, Jiangsu, China.
Nantong production and test · Nanjing R&D center
OEM / ODM under your brand
Your logo on a proven platform.
Inquiry
Series, power, quantity.
Sample
Test on your own loads.
Customization
Logo, panel, packaging, manual.
Production
Built to the approved sample.
Voltage, frequency, protocols, battery autonomy and enclosure built to your specification.
OEM / ODM detailsFive numbers get you a quote
Send what you know. We reply within one working day.
- LoadkVA or kW, and what it is
- Input voltage and phasese.g. 400 V three-phase, 50 Hz
- Output phasesSingle- or three-phase
- Backup timeMinutes at full or typical load
- SiteIndoor, temperature, altitude, generator
Buying guides
Short answers before you ask for a quote.
Industrial Isolation Transformer UPS: When Galvanic Isolation Matters
An isolation transformer breaks the direct conductive path between mains and load. In an industrial uninterruptible power supply it lets you create a clean new neutral, block common-mode noise and ride out the earthing problems that high-frequency units pass straight through.
Online vs Offline UPS: Double Conversion, Line-Interactive and Standby
Uninterruptible power supplies come in three basic designs. Offline and line-interactive units pass mains through and switch to battery when it fails. An online double-conversion unit rebuilds the output all the time, so the load never sees the grid.
How to Size an Online UPS: kVA, kW, Inrush and Battery Runtime
Sizing a UPS system is two jobs: choose a power rating that carries the load with margin, then a battery that carries it for long enough. Here is a method and a worked estimate; for a real project, ask us for a calculation.