Operation And Commissioning; Theory Of Operation; Line Mode; Battery Mode - Chloride Power Protection ACTIVE Manuel Utilisateur

Chloride Active

4 Operation and Commissioning

UK

4.1 Theory of Operation

ATTENTION: This UPS is supplied with standard power cords and receptacles suitable for its use in your
area of operation. It may be installed and operated by non-technician personnel.

4.1.1 Line Mode

In use, the UPS is connected between AC input power and the load. The operation of this UPS is based
on the on-line double conversion principle in which the input AC power is fi rst converted to DC, and
secondarily converted back to a sine wave of a fi xed frequency and voltage to supply controlled power
to the load. This UPS topology is used to prevent the critical load from suffering a variety of power line
problems, including the total loss of input AC power.

4.1.2 Battery Mode

In the event of a mains failure, the maintenance-free batteries will continue to provide an uninterrupted
supply of energy to the load. In practice, most mains failures are of relatively short duration. Therefore,
the energy stored in the UPS's batteries is, in most cases, suffi cient to ensure continuous operation of the
connected systems until the mains power is re-established. In the event of a long lasting mains failure, the
UPS can be utilized with shutdown software to enable a controlled shutdown of connected systems.
The most reliable method for determining the estimated battery runtime is the use of the LCD Display or the
application of the user software or SNMP network card. With this software, the estimated remaining battery
capacity is indicated before and during an AC power failure. These products also allow for automated
shutdown procedures that can shut down the attached devices after safely closing open applications
programs and the operating system. After return of the mains voltage, the UPS automatically restores
power to the connected equipment and starts recharging the batteries.

4.1.3 Bypass Mode

If the UPS is in bypass mode, the load is supplied directly from the AC mains via the internal automatic
bypass.
The unit automatically starts up in bypass when it is connected to the AC mains, supplying voltage
immediately to the load. It is necessary to press the Inverter ON button to start the inverter and switch the
unit to line mode (normal operation).
In the event of an overload on the UPS or internal UPS failure, the load is immediately supplied directly
from the mains via this automatic internal bypass. As soon as normal status is re-established, an automatic
switch over to inverter operation is performed.
Alternatively, the unit can be forced to bypass by the user using the front panel buttons or LCD Display.
In this case, if the input parameters (voltage, frequency) go out of tolerances, the unit automatically shuts
down.

4.1.4 ECO Mode

When the ECO Mode is enabled and mains conditions are within tolerances, the output is fed directly from
the input via the internal bypass, thus achieving very high effi ciency values and therefore saving energy.
When ECO mode is activated and mains conditions go out of tolerances, the unit automatically feeds the
load through the inverter to keep the load protected.
When the unit is operating on ECO mode, the internal battery charger is working. Therefore, batteries are
kept charged.
For details on how to enable/disable this mode, please refer to 4.4.5.

4.1.5 Frequency Converter Mode

The UPS can operate as a frequency converter, providing 50Hz or 60Hz (whichever is selected) to the
output when the input frequency is within the 40-70Hz range.
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