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KESS Power Solutions Gmbh / www.kess.at / info@kess.at
Thanks to their PwM (pulse width modulation) and double-conversion
technology, the KESSUPS 92RT series is compact, silent and offers high
performance.
The double converter principle eliminates all mains power disturbances. A
rectifier converts the AC current of the mains into DC current. It maintains the
optimum battery charge level and powers the inverter, which in turn, generates
a suitable AC sine-wave voltage for continuously powering the loads. in the case
of failure the batteries supply clean power to the inverter.
The design and construction of the KESSUPS 92RT series has been carried out in
accordance with international standards.
in addition, models with power ratings greater than 3 kVA can be expanded with
the connection of additional modules with the same power in parallel to obtain
N+x redundancy or an increase in the system‘s power.
This series has been designed to maximise the availability of critical loads and to
ensure that your business is protected from variations in the power distribution line
voltage, frequency, electrical noise, cuts and micro-cuts. This is the primary goal
of the KESSUPS 92RT series.
4.3 UPS oPERATiNG ModES
normal mode
The device supplies output voltage from the inverter, mains power present with
correct input voltage and frequency.
Battery mode
The device runs with mains voltage or frequency out of range or without AC
input power, either due to mains failure or absence of cable connection,
supplying output voltage from the batteries.
Bypass mode
No matter the device is running or not, it supplies output voltage directly from
the AC mains.
with the inverter running, this operating mode may occur due to an overload,
blockage or inverter fault. The actions for each incident will be as follows:
Reduce the load connected to the output, unblock the device by resetting it
(stop it and start it again) and if the fault remains, contact the KESS service.
with the inverter shut down, the output supplies the main power directly through
the static bypass of the device, provided that it has AC input power.