New generation Atlas Copco ZR/ZT 55-90 &
90VSD compressors: more air at the lowest cost
With the introduction of the new generation oil-free screw compressors
in the 80 to 260 l/s range, Atlas Copco has succeeded in combining
a wider pressure range, a higher flow rate - despite the lower specific
energy requirement - and a high level of integration.
The new Atlas Copco Z 90 VSD is the first Variable Speed Driven
oil-free compressor in this range that comes in both air cooled
and water cooled versions.
The new Atlas Copco ZR and ZT 55-90 demonstrate the strategy of
Atlas Copco Compressor Technique to extend the offering to more
customers in a wider spectrum of applications. Because the new Z
55, Z 75 and Z 90 are available in an extended capacity range and
in a pressure range of 7.25 to 10.4 bar(e) in 50 and 60 Hz, it is
easier than ever to select the model that best matches the application.
Whereas the previous range was typically used in the semiconductor
industry, the higher pressure variants open up new fields of applications
such as hospitals, food and drinks industry, industrial gases, spinning
and many other applications.
The silent workhorse
Rational design, a high level of integration and superior performance
were the key objectives in the development of the new Z 55-90 series.
Minimal external piping, a very low vibration level and high mechanical
integrity are the results. The noise level was reduced by an impressive
84%, down to 65 dB(A) in water cooled machines, which allows the
units to be placed anywhere in the building. The Z 55 saw its tooth
rotor replaced by a screw element, boosting the flow rate at even
lower Specific Energy Requirements (SER).
Variable speed, no windows
By varying the speed of the drive motor, the Atlas Copco Z 90 VSD
compressor output closely matches the air consumption over a wide
(1 to 3) capacity ratio, from 80 to 260 l/s. In addition to its
numerous stand-alone applications, the Z 90 VSD is an ideal top
load machine in multi-compressor installations.
Because every component in the machine was designed for variable
speed operation, there is a total absence of speed windows and a
consistently high level of energy savings of up to 25%. The integrated
approach of motor and converter not only reduces floor space, but
also ensures that the machine fully complies with EMC directives.
The built-in coils, capacitors and filters virtually eliminate harmonic
distortions, which excludes adverse effects on the customer electrical
installation.
Traditional benefits of VSD technology remain unchanged: a highly
stable air net pressure, low starting currents, a total absence
of peaks and a high power factor. For the first time, all these
advantages are no longer limited to water cooled machines; the new
Atlas Copco air cooled ZT 90 VSD further extends the versatility
of the new range.
For more information about Atlas Copco Compressors contact:
Atlas Copco - Compressors
www.atlascopco.co.uk
gba.info@uk.atlascopco.com
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