Secure Power SP201 - 2.2 The Principle of the Product; 2.3 Model

Secure Power Ltd
User Manual
5
2.2 The principle of the product
Fig 5. UPS Principle Diagram
1. Input filter: Complete filtering the input AC utility power to provide the clean power for UPS.
2. AC/DC converter: Convert the filtered AC mains to DC and boost the DC for DC/AC inverter.
3. DC/DC booster: When the UPS works in battery mode, the circuit boosts the DC for DC/AC
inverter.
4. DC/AC inverter: Convert the boosted DC to stable AC output.
5. Bypass: When overload or failure of inverting occurs, it transfers to bypass mode to supply
power to loads.
6. Charger: Standard unit provides 1A; long backup unit provides 4A.
7. Battery: Sealed Lead Acid Battery.
8. Output filter: Complete filtering the output of the UPS to provide the clean power for loads.
2.3 Model
UPS sort
Model No.
Remark
Standard unit
1KVAS
Internal 1A charger, 2 PCS 7AH batteries
2KVAS
Internal 1A charger, 4 PCS 7AH batteries
3KVAS
Internal 1A charger, 6 PCS 7AH batteries
Long backup unit
1KVAH
► Internal 4A charger, external 24V battery
2KVAH
► Internal 4A charger, external 48V battery
3KVAH
► Internal 4A charger, external 72V battery
The 12V/9AH battery is a sealed lead acid maintenance free battery that can be chosen for the
internal battery for the standard unit.
The 7A charger can be chosen as internal charger for the long backup unit. Two internal chargers can
be used in long backup unit.