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3.3. options
Depending on the selected configuration, the equipment can in-
clude any of the following options:
3.3.1.
isolation transformer
The isolation transformer, provides a galvanic isolation that allows
isolating the output from the input completely.
The installation of an electrostatic shield between the primary and
secondary windings of the transformer provides a high level of at-
tenuation of the electrical noises.
The isolation transformer can be installed at the input or output of
the UPS from KESSUPS 91RT series and it will always be located out
from the equipment enclosure.
3.3.2. External maintenance manual bypass
The purpose of this option is to isolate electrically the equipment
from mains and critical loads, without breaking the power supply to
the loads. Therefore, in this way the maintenance or fixing tasks can
be done in the equipment with no interruption on the power supply
energy to the protected system, at the same time that unnecessary
risks are avoided to the technical staff.
The basic difference between this option and the manual bypass inte-
grated in the own UPS enclosure in models of higher power rate than 3
kVA, consists in a better manoeuvring, because it allows a complete dis-
connection of the UPS from the installation
3.3.3. integration in iT networks by means of
the SnMP adapter
The big iT systems based on lAns and wAns that integrate servers
with different platforms, they have to include an easy way of control-
ling and management at the manager system disposal. This facility
is got through the SnMP adapter, which is well-known by the main
software and hardware manufacturers.
The available SnMP option for KESSUPS 91RT series is a card to be in-
serted into the slot that the UPS has on its rear side.
The connection of the UPS with the SnMP is internal meanwhile the
connection between the SnMP and the iT network is done through a
RJ45 connector 10 base.
3.3.4. Relays interface card
See section 4.3.10.3.
3.3.5. Parallel cable kit
The parallel cable kit is used to make the parallel communication con-
trol between two equipments of the same power rate that makes a
system.
3.3.6. MoDbUS protocol
The big iT systems based on lAns and wAns, many times they re-
quire that the communication with any device to be integrated in the
iT network has to be done by means of an industrial standard pro-
tocol.
one of the most used industrial standard protocols in the market is
the MoDbUS protocol. KESSUPS 91RT series is also ready to be in-
tegrated in this type of environments through the external “SnMP
card” device with MoDbUS protocol.
3.3.7.
Telescopic guide kit for rack cabinet
assembling in
There is available one model of telescopic guide kit for all models,
suitable for 19-inch rack cabinet.
These guides allow installing any unit of the KESSUPS 91RT equip-
ment and their possible battery modules.
