| A bigger danger
is that larger spikes can easily damage a power supply
hence many quality servers have two. The T7 incorporates
high energy absorbing filters that will mitigate this
threat, offering your network a clean and regulated
power supply. The T7 also incorporates an output transformer
which dramatically limits how much energy can be back
fed to the UPS output stage, crucial in industrial applications.
The T7 is available from 10KVA to 300
KVA exclusively as a three phase system. The technology
of the T7 series is true double conversion. Double conversion
technology means the load is run 100% of the time by
a continuously rated inverter with the output voltage
and frequency being regulated, cleaned and constantly
monitored. Added to the inverter section areadditional
output filters which remove any other electrical noise,
even in bypass mode.
Battery Management
To off set the unavoidable process of
battery degradation, the T7 incorporates a battery management
system which can be calibrated to match almost any battery
manufacturers’ specifications, this includes NiCad’s.
Battery temperature is carefully monitored with data
being
passed back to the charger, in the event that the ambient
temperature increases, the T7 will adjust its charging
regime to compensate. Any life threatening battery problems
will automatically be raised as an alarm, providing
the user with an opportunity to remedy the problem.
Expandable Power with Redundancy
The T7 can be configured to operate in
parallel, offering an N+1 configuration or alternatively
as a power expansion option. The parallel control system
tightly manages both active and reactive type loads,
allowing for intelligent load/current sharing between
each individual phase, in layman’s terms the T7
load shares with intelligence.
Typically when running in parallel, conventional
UPS work on a Master/Slave principle, should the master
UPS fail the whole system fails, however the T7 is not
a typical UPS. Each system is connected to the other
via a robust CAN BUS connection and is supplied with
its own parallel monitoring system; this configuration
removes a single point of failure.
Expanding a T7 system either for parallel or power expansion
is a very simple process; the connectivity to achieve
either ofthese goals is simple and can be performed
in the field.
Safety In Advanced Technology
The T7 Series incorporates “tricore
technology” which includes both DSP and micro-processor
applications. With many non industrial UPS auxiliary
power supplies there can be a single point of failure,
the T7 has been designed to allow for this possible
scenario. Any malfunction of a power supply or even
a micro processor should not threaten the load. Fail
safe engineering is one of those hidden benefits that
is not evident until a problem occurs; be assured that
every
facet of the T7 has been designed to mitigate any threat.
All crucial components, modules and systems are constantly
monitored allowing for predictive maintenance, should
any anomalies occur this information can be gathered
via a PC or through the internet.
Easy Installation & Operation
Because of intelligent cooling the T7
Series can be positioned against rear or side walls.
Air is drawn through the front and expelled through
the top, an important feature when space is at a premium.
Another advantage of an efficient cooling system is
that the life of the internal power components is greatly
extended. The T7 Series has been designed with ease
of maintenance in mind, but all UPS systems from time
to time need to be serviced. To this end all major
components can be accessed from the front, and this
simple but practical feature greatly reduces servicing
inconvenience as the UPS can remain in position.
Efficiency
The combination of the T7’s DSP,
IGBT and Tri Core technology all add up to an efficient
UPS, which in turn equates to saving money. Achieving
93% efficiency in On-Line mode is typically 7% to 8%
better than a conventional six pulse UPS, in real terms
you could be saving 2.8KW per hour on a 40kVA installation.
To illustrate; imagine a 2.5KW electric bar fire running
in your office day in day out, this is the potential
saving you could make with the help of the T7. Another
benefit of efficient running is that less heat is generated,
thus air conditioning can be down rated on an almost
pro-rata basis, again real savings are made.
Blade Server Compatibility
The T7 will work with almost any type
of load, accepting power factors of either .9 leading
or .9 lagging (many other manufactures standard is .8pf)
this makes it ideally suited for applications with Blade
Servers or other devices where a leading power factor
can offer a serious challenge, a challenge not all UPS
can meet.
Serviceability & MTTR
MTTR (Mean Time to Repair) can mean a
lot more than just four letters when you are responsible
for the efficient running of a production plant or IT
room. A low MTTR is what all serious users need, in
fact demand! This requirement is no problem for the
T7, which offers features that dramatically reduce service
or repair times. Problems can be diagnosed via the on
board LCD, screen or through a software interface or
even the internet. All critical circuit boards are accessed
via the front of the UPS, removal and replacement of
a board can be done in less than ten minutes with the
UPS remaining in position.
Mains Friendly
The T7 was deliberately designed as a
transformer based UPS but with an IGBT input and output
all controlled by DSP
technology (Digital Signal Processor). A transformer
based technology in our opinion offers the best solution
for the
industrial user or the large IT customer. Again here
we have acronyms, IGBT, DSP, how do these affect you
the user?
The combination of Isolated Gate Bipolar Transistors
(IGBT’s) and Digital Signal Possessing allows
the T7 to have an
almost negligible effect on the mains supply in that
less than five percent harmonic distortion is generated.
The benefits of this feature is that a generator can
be down sized by as much as 50%, also the user will
more than likely
fall outside any financial penalty bands that many EEC
countries are considering for mains pollution.
For an animation depicting how
bypass switches work within the UPS system,
click
here. |
