LEVELUPS SERIES 10-20 KVA PRODUCT DESCRIPTION
AG-SD-83 / Publication Date: 15.09.2014 / Rev. No: 0 / Rev. Date:
inverter during the normal operating mode. Therefore, Inverter static switches are active if
there are no problems with the system.
System provides the loads to be fed smooth and seamless by mains or inverter. In order to
manage this process at minimum risk, UPS synchronizes the inverter output and static (mains)
bypass as phase and frequency. Therefore, Inverter frequency can be considered same with
mains as long as it is within frequency limit.
User can switch between mains and inverter by using front panel. When the inverter is ready,
while the loads are fed through the bypass line, in case of either power failure or if mains values
are out of tolerances, the loads automatically will be fed through the inverter.
The user can activate the maintenance bypass and all the loads will be fed through the mains
without manipulations from the main panel. After that the input and the output fuses can be
turned to the OFF position.
NOT: When the inverter is not ready the loads are fed through the bypass line. Loads are not
protected against the mains failure, power spikes and other mains problems.
2.1.2 Battery Temperature Regulation
In the external battery cabinets the battery temperature is measured and detected by
"temperature sensor”. UPS adjusts battery charge parameters according to the detected
temperature. These parameters can be easily adjusted via LCD or TELNET interface by
authorized personnel of MAKELSAN. UPS adjusts battery charge parameters according to the
temperature detected by the sensor.
2.2 UPS’s Operation Modes
LevelUps series is on-line double conversion device. Our products operate in the following
modes:
Online Mode
Battery Mode
Bypass Mode
Auto Restart
Maintenance Mode
2.2.1 Normal (Online) mode
In this mode, UPS feeds the load through the inverters. Rectifier unit is fed by the AC mains
power. Inverter and battery charge units are fed by DC supply generated by rectifier unit.
2.2.2 Battery (Stored) Mode
When the mains voltage is bad the UPS runs on battery mode. UPS feeds the critical load through
the inverter; the energy is obtained from batteries.
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