Operations; General Description - Powercom 1000 User Manual

6. Operations

6.1 General description

Line Mode / Battery Mode
As a double conversion on-line UPS, it is necessary to supply uninterrupted, clean single-phase
power to your critical systems. The diagram of the UPS is as shown in Fig.6.

Input filter reduces transients on the mains.

With PFC AC/DC, the AC-power is rectified and regulated to DC power.

DC power is converted to AC in the inverter passing it on to the load.

Power will be maintained from the battery during the AC power failure. (Battery Mode)
Free Run Mode
Free Run Mode provides UPS a wider input frequency range. While Line mode provides the
same frequency as AC power when AC power frequency is within the selected range (user
selectable with software), Free Run Mode enlarge the range up to 45Hz to 65Hz but fix the
output frequency as 50Hz for 220V system and 60Hz for 110V system with ±0.25Hz. Free Run
Mode is recommended if the AC power has large variation.
Free Run Mode is activated in default and can run with line mode at the same time.
High Efficiency Mode
The Efficiency Optimizer Function is a new feature for the UPS adding cost effectiveness,
minimizing power loss and reducing power consumption. Alternating between bypass and
on-line modes is achieved automatically and in accordance with the conditions of the utility
power. On-line mode may be used during times of intermittent power supply, and bypass
mode when power flows smoothly in order to obtain greatest efficiency. Irregularities can be
detected in less than a second, and on-line mode reactivated immediately. Switching back to
online mode occurs when input voltage is outside ±10% or nominal (±15% selectable), when
input frequency is outside of ±3Hz or when no input line is available.
High Efficiency Mode can be activated from the LCD panel. Please refer to Chapter 6.6.
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Fig.6 Block diagram
6