Frequently Asked Question

Last Updated 5 years ago

An Offline or Stand-by is the basic idea of an uninterrupted power supply system. Offline UPS models protect against power failures only



This kind of UPS switches to battery power in case the voltage is 10% lower than the typical input voltage range. If voltage range comes back to a normal level the UPS switch back to AC power mode.

The benefit of Offline UPS is the simplicity and low costs. Installation is easy and quick.

Offline UPS are designed for small budgets and less critical loads with a wider input tolerance. In recent years the demand for this solution is shrinking as more advanced line-interactive models are available in comparable prices.

- simple and cost-effective solution
- small own power consumption
- in bypass in normal operation
- in battery mode when mains failed modulated wave output
- a manual shutdown of connected equipment required
- no software control