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Uninterruptible Power Supplies
The S5KC UPS is a true online double-conversion system, having the following operating modes:
• Normal Mode
• Back-up Mode
• Auto Restart Mode
• Bypass Mode
Normal Mode
The power module rectifiers derive power from a utility AC source and supply regulated DC power to the inverter.
The module’s inverter regenerates precise AC power to supply the connected equipment. The battery charger is in
the power module and maintains a float-charge on the batteries of the UPS; additionally, the optional charger module
(S5KCCHRGRMOD) can also charge the batteries to maintain a quicker recharge time for long back-up time applications.
Back-up Mode
When AC utility fails, the connected equipment is supplied power by the inverter, which obtains energy from the battery
modules. The output power will not be interrupted during the failure or restoration of the AC utility/mains source.
Auto Restart Mode
After a power outage and complete battery discharge, and once AC utility is restored, the UPS will automatically restart and
resume supplying power to connected equipment. This feature is enabled at the factory, but can be disabled by the user. The
user can also program two auto restart delay settings
from the LCD:
• Battery capacity level (%)
• Countdown timer
Bypass Mode
The bypass provides an alternate path for power to the connected equipment and operates in the following manner:
• Automatic:
In the event of an internal fault or should the inverter overload capacity be exceeded, the UPS performs an
automatic transfer of the connected equipment from the inverter to the bypass source.
• Manual:
Should the UPS need to be taken out of service for limited maintenance or repair, manual activation of the
bypass will cause an immediate transfer of the equipment from the inverter to the bypass source.
S5KC Operating Modes
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
