Important Notices!
Thank you for choosing LEGRAND UPS System to supply your Critical Application.
This manual contains important information about commissioning, usage and technical properties of the
UPS. It also contains safety information for operator and instructions to secure your critical load. Applying
the recommendation detailed in this manual is necessary to use UPS safely and correctly.
The manufacturer reserves the rights to change the t
echnical specifica
tions
and design without notice.
LEGRAND reserves the rights to change the information in this document
without notice. Refer to
http://ups.legrand.com/
web site to dowload last
release and translations.
Units that are labelled with a CE mark comply with the Standard: EN 62040-1 and EN 62040-2.
Read the manual completely before working on this equipment!
Keep this manual in UPS’s front cover’s pocket for easy consultation!
Reproduction, adaptation, or translation of this manual is prohibited without prior
written permission of LEGRAND Company, except as allowed under the copyright laws.
10
10
4.2.
Battery Mode
In this operation, energy is drawn from the batteries. The loads are supplied via inverter. Output voltage is
sinusoidal and has a regulated amplitude and frequency.
Battery voltage should be in acceptable limits and the inverter should be enabled for the UPS to operate
in this mode.
UPS operates in Battery Operation in the following cases:
• While UPS is operating in Online Operation; if frequency/waveform/rms value of mains voltage go beyond
the rec
tifier limits
,
• While UPS is operating in Bypass Operation, if frequency/waveform/rms value of mains voltage go beyond
Bypass limits,
• If Inverter enabled: “YES”, Rec
tifier
enabled: “NO” are selected through the front panel (Authorisations
Menu for authorized Service S
taff
).
KEOR T EVO UPS operates with one or several parallel strings of 1 x 60pcs 12VDC battery with common
neutral.
You may see the battery string connection as below;
+
-
n x 30 pcs
n x 30 pcs
POSITIVE STRING
NEUTRAL
POINT
N
NEGATIVE STRING
Two Serial Strings with Central Point – Neutral Potential –
Battery Management and Battery Back-Up Time
When UPS operates in Online or Bypass Operation; it continuously calculates and displays the remaining
back-up time.
Autonomy time depends on battery type, quantity, capacity, situation and load level. UPS stops supplying
the loads if the battery voltage decr
eases under a specific v
alue.
Battery life depends on some parameters such as battery type, charge-discharge cycle, and depth of dis-
charge, ambient temperature, conditions. Please check Technical
Specifica
tions for the ideal environmental
conditions for the batteries. Using the batteries outside this temperature range will decrease battery opera-
tion time and battery life.