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.
8
8
3.4.
Important Notice for Battery
• The batteries may only be installed and commissioned by authorized LEGRAND UPS Technical Service
Personnel.
• Make sure that the battery qty is proper for the unit and they are same type and capacity. Otherwise danger of
e
xplosion and fir
e is within the bounds of possibility.
• Do not dispose of batter
ies in a fir
e. The batteries may explode.
• Do not open or mutilate batteries. Released electrolyte is harmful to the skin and eyes. It may be toxic.
• In case of electrolyte in contact with skin, immediately wash the contaminated skin with water.
• Replaced batteries must be disposed of at authorized battery waste disposal centres.
• A battery can present risk of electric shock and high short circuit currents.
The following precautions should be observed when working on batteries;
• Remove rings, watches, necklaces, bracelets and all metal objects.
• Only use tools with insulated handles.
•
Wear protective gloves when handling the batteries and isolated rubber gloves when connecting batteries.
• Do not lay tools or metal parts on top of batteries.
• Eye protection should be worn to prevent injury from accidental electrical arcs.
• Before a maintenance or repair work on the UPS;
• Switch the input, output and battery circuit breakers (
Q1, Q2
and
F5
) to “
OFF
” position.
• If UPS has internal batteries; Remove and i battery (red) and
N
battery neutral (blue) cables.
• If UPS has external batteries; also switch the circuit breakers of the battery cabinet to “
OFF
” position.
• Determine if the battery is inadvertently grounded. If inadvertently grounded; remove source of ground. Contact
with any part of a grounded battery can result in electrical shock.
• Battery fuses shall only be replaced with the same rating and type which came along with the UPS.
3.5.
Emergency interventions
The following information is of a general nature. For
specific
interventions please consult the laws existing in the
country where the equipment is installed.
First aid interventions
If an
y first aid in
tervention is required, comply with company rules and traditional procedures.
Fire-prevention measures
Never use water to extinguish
fir
e but only the extinguishers designed
specifically
for electronic equipment or battery
fir
es.
9
KEOR T EVO
Installa
tion & Oper
ation M
anual
4. Operation Modes
Uninterruptible Power Supplies (UPS) most important function is the protection of critical and sensitive loads
from the irregular mains voltage conditions. They are used to supply uninterruptible energy to these loads
in such irregular mains voltage conditions and provide regulated energy supply to the equipment present in
the IT room, industrial workshop
, hospitals and offic
es.
KEOR T EVO UPS during Online mode operation provides stable pure sine wave not
aff
ected by input voltage
fluc
tuations. This helps to extend the life time of your sensible loads. Power factor of the current consumed
from mains is nearly one. This allows perfect adaptation to upstream generator or isolation transformer
supply. The reactive power consumption decreases.
During mains voltage failure, the energy needed for the load is provided by the internal battery (or installed
in external battery cabinet/s). These batteries are charged by an intelligent battery charging circuit when
mains voltage is within the limits. Batteries are lead acid battery (VRLA) and do not require any maintenance
until the end of their life time.
In case of long overload or inverter failure situation, UPS transfers the load supply to bypass line, and load is
supplied by mains. When the condition turns back to normal, UPS will continue to supply the load through
inverter.
UPS control and management is done by Digital Signal Processor (DSP) which is 200 times faster than
standard microprocessors. This helps to make your UPS smarter. DSP uses all the sources on optimum
conditions, observes the failure conditions, and communicates with your computer system.
UPS can be operated in one of the following operational modes depending on the condition of mains
voltage, battery, load, UPS status or user preference.
You may see the block diagram of UPS in Appendix-6 Description of UPS and Block Diagram.
4.1.
Online Mode
Energy is drawn from the mains voltage input. Loads are supplied through the rec
tifier
and the inverter. The
AC voltage at the input is converted to a DC voltage by the rec
tifier
. The inverter converts this DC voltage to
an AC voltage with a stable sinusoidal waveform, amplitude and frequency. Output voltage and frequency
can be set via front panel. Output voltage is sinusoidal and has a regulated amplitude and frequency. It is
independent from the input voltage. The loads ar
e not aff
ected by the disturbances of the mains voltage.
If the mains voltage and frequency are in an acceptable range, Online Operation is possible.
Check Appendix-4 Technical
Specifica
tions for Online Operation mode mains voltage limits.
The upper limit of mains voltage is independent from the load percentage and it is Ph-N: 270V. UPS switches
to Battery Operation mode when the mains voltage is over Ph-N: 270V. The mains voltage is required to
decrease below Ph-N: 260V for UPS to return Online Operation.
Online Operation Conditions;
• In case Online Operation is set as operation mode of UPS, the mains voltage is within the limits and/
or if there is no abnormal condition (overheat, overload, failure…etc.) UPS operates in Online Operation.
Except for failures, as soon as the abnormal conditions are eliminated, UPS switches to Online Operation
automatically.
• In case Bypass Operation is set as operation mode of UPS and the voltage and frequency is out of the
bypass limits but within the rec
tifier limits
, UPS switches to Online Operation.
KEOR T EVO is intended to be used only with VRLA batteries.