Water cooled centrifugal chillers. An exceptionally energy efficient water-cooled chiller range featuring oil-free Turbocor compressors with еconomizers, flooded evaporators and offering a green, low-GWP R1234ze refrigerant. A vast range of Powerstream Turbo models and options provides exibility, tailored precisely to the customer requirements allowing to design truly ecient cooling solutions for every application. Powerstream Turbo has been designed for year-round mission-critical service. In a 24/7 world, keeping facilities up and running is critical, and we paid special attention to control and monitoring functionality, as well as to operational reliability and ease of maintenance. Due to its excellent eciency at part-load conditions, Powerstream Turbo is an excellent economy solution for applications where the heat load is not constant and/or expected to grow. The synergy of modern technology, eciency and reliability enables Powerstream Turbo to be used in the most demanding applications.

1. WATER COOLED CENTRIFUGAL CHILLERS
Powerstream
Turbo
http://WWW.KALTRA.DE
280-1240kW R1234ze
280-1840kW R134a
OIL-FREE TURBOCOR COMPRESSORS
R134a/R1234ze REFRIGERANT SELECTION
CLASS A EER UP TO 5.45
FREECOOLINGR134A/R1234zeTURBOCOR WATER COOLED

2. Ultimate water-cooled solution
AN EXCEPTIONALLY ENERGY EFFICIENT WATER-COOLED CHILLER RANGE FEATURING OIL-FREE TURBOCOR COMPRESSORS WITH
ECONOMIZERS, FLOODED EVAPORATORS AND OFFERING A GREEN, LOW-GWP R1234ZE REFRIGERANT.
A vast range of Powerstream Turbo models and options provides flexibility, tailored precisely to the customer requirements allowing to design truly efficient cooling solutions for
every application.
Powerstream Turbo has been designed for year-round mission-critical service. In a 24/7 world, keeping facilities up and running is critical, and we paid special attention to control
and monitoring functionality, as well as to operational reliability and ease of maintenance. Due to its excellent efficiency at part-load conditions, Powerstream Turbo is an excellent
economy solution for applications where the heat load is not constant and/or expected to grow. The synergy of modern technology, efficiency and reliability enables Powerstream
Turbo to be used in the most demanding applications.
Turbocor compressors
Save up to in operating costs*25%
Turbocor compressors offer the outstanding energy savings from digitally controlled,
frictionless two-stage centrifugal compression and guarantees significant reductions in
operating cost and environmental emissions associated with energy production.
The oil-free design of Turbocor compressors eliminates the potential for efficiency robbing oil
contamination and all of the oil management accessories: oil heaters, oil pumps, oil separators,
oil filters, plus oil disposal.
Compressor soft-start draws only 2 amps and reduces mechanical stress, as well as the
electrodynamic stresses on the power cables and electrical distribution network, extending
the overall lifespan of the system.
* compared to leading competitor screw chiller over an annual running in Nuremberg, Germany
R1234ze
Refrigerants with low global warming potential (GWP) are becoming
more and more important in the refrigeration and air conditioning
industry in Europe and beyond.
R1234ze features low GWP of one and zero ozone depletion potential,
thus providing the environmental leadership while achieving the best
energy performance levels for applications.
Environmental leadership
280-1840kW
• 30 MODELS WITH CAPACITY RANGE OF 280 TO 1840kW
• COMPACT DESIGN WITH 6 FRAME SIZES
• REDUCED REFRIGERANT CHARGE
• MINIMAL ENVIRONMENTAL IMPACT
• SILENT OPERTAION

3. Optimized shell-and-tube condensers
• OPTIMIZED FOR HFC AND HFO REFRIGERANTS
• HIGH PERFORMANCE
• EASY OF MAINTENANCE AND CLEANING
Powerstream Turbo features newly developed shell-and-tube condensers optimized for HFC and
HFO refrigerants to provide the best efficiency. With high-performance tubes, new baffle design
and shell, these condensers provide maximum efficiency with a low cost per kW, as well as shorter
lenght and reduced weight comparing with competing solutions. Water flow within condenser is
optimized to reduce the fouling and erosion risks.
Standard are 2 pass condensers, 4 pass condensers available as an option.
30
MODELS
AVAILABLE
We use grooved end connections because of their rigidity, flexibility, noise and vibration attenuation, and easy of installation and
maintenance. The groove is made by cold forming or machining a groove into the end of a pipe. A gasket encompassed by the
coupling housing is wrapped around the two grooved pipe ends, and the key sections of the coupling housing engage the grooves.
The bolts and nuts are tightened with a socket wrench or impact wrench.
Grooved connections
Capacity (%)
kWenergyperkWcooling
0 20 40 60 80 100
.05.10.15.20.25
Compressor efficiency comparison
Competing screw water cooled
Powerstream Turbo
Higher microchannel condenser performance results in a reduced condensing temperature,
which in turn reduces compressor power consumption and increases the overall chiller
efficiency, while allowable operating envelope of the compressors gets widened to a higher
ambient temperature.
Superior performance of the microchannel freecooling coil translates to higher freecooling
capacity and increased freecooling hours, thus increasing the overall system efficiency. In the
same time, the microchannel freecooling coils do not impact the fan power consumption due
to the low airside pressure drop.
ESEER up to 8.95*
* referring to 7/12°C, 100% water solution
Flooded evaporators
• EXCELLENT FOR PART LOAD CONDITIONS
• OPTIMIZED FOR HFC AND HFO REFRIGERANTS
• EASY OF MAINTENANCE AND CLEANING
The flooded evaporator enables to operate at the higher saturated evaporating temperature when
compared to many others evaporator types and allows to achieve higher cooling capacity with
correspondingly higher efficiency.
The refrigerant pool behaves as a flywheel, allowing the controls of the flooded evaporator to track
the varying load of a batch process, while optimized tube geometry ensures optimal refrigerant
distribution.

4. Advanced controls
Powerstream
Powerstream Turbo
Kaltra Innovativtechnik GmbH
Max-Reger-Str. 44 • 90571 Schwaig • Germany
 info@kaltra.de
 +49(0)911 715 32021
Package, options and accessories
■ Standard feature
□ Optional feature
Description
General
Anti-vibration mounts □
Waterside/Refrigerant side
High-pressure safety switch ■
Electronic expansion valve ■
Motorized bypass valve ■
Service valves on compressor suction/discharge ■
BMS connectivity ■
SNMP connectivity □
Electric and controls
Description
Noise reduction enclosure □
Service valve on liquid line ■
Water flow switch (loose) ■
Flowmeter □
Refrigerant leak detection □
Sequence management □
Energy monitoring □
Description
Noise absorption shells on compressors □
Temperature probes on evaporator inlet/outlet ■
Temperature probes on condenser inlet/outlet ■
Pressure transducers on high/low refrigerant sides ■
Safety valves on high/low refrigerant sides ■
Remote monitoring □
Touchscreen HMI □
Compressors type C Centrifugal oil-free
Nominal capacity kW
Evaporator type F Flooded shell-and-tube
Compressors No. of compressors
Refrigerant circuits No. of refrigerant circuits
Refrigerant Type
Powerstream Turbo C 800 E F 3 / 1 - R134a
S Standard
E Economizer
Economization
Model identification Frame sizes
Frame size Length Width Height
F2 3475 1375 1775
F3 3675 1375 1925
F4 3775 1375 2095
F5 4525 1375 2095
mm mm mm
F1 3025 1375 1775
F6 4975 1375 2095
5.95
Powerstream Competing screw
Turbo water-cooled
Energyefficiencyratio
2.0
3.0
4.0
5.0
6.0
The control hub of Powerstream Turbo chillers is a sophisticated controller and advanced software
developed for efficient operation of Turbocor-based chillers. It manages and optimizes the chiller’s
performance, giving the complete control over the system for plant operator.
For the efficient operation of multiple units on a single chilled water plant, the sequencing software
permits interlinked operation of the complete system, thus providing optimal temperature control and
minimal energy consumption.

5. Technical Specifications R134a
Technical Specifications R1234ze
(1) Water 100%; Chilled water temperatures: 7/12°C; Condenser water temperatures: 30/35°C
Compressors Oil-free Turbocor
Evaporator Flooded shell-and-tube
Condenser Shell-and-tube
Refrigerant circuit R1234ze
Model C300S C300E C600S C600E C800S C800E C1200S C1200E
Frame size F2 F2 F3 F3 F4 F4 F5 F5
F1/1 F1/1 F2/1 F2/1 F3/1 F3/1 F4/1 F4/1
Cooling capacity1
kW 280 310 560 620 840 930 1120 1240
Energy efficiency (EER) kW/kW 5.33 5.39 5.33 5.39 5.33 5.47 5.40 5.45
ESEER 8.30 8.52 8.88 8.95 8.92 8.92 8.65 8.70
IPLV (ARI 550/590) 9.17 9.42 9.50 9.55 9.57 9.57 9.53 9.38
Net weight kg 2080 2200 3150 3520 4720 5200 6380 6980
Quantity 1 1 2 2 3 3 4 4
Capacity modulation % 25.0÷100.0 25.0÷100.0 12.5÷100.0 12.5÷100.0 7.5÷100.0 12.5÷100.0 7.5÷100.0 12.5÷100.0
Power input kW 52.5 57.5 105.0 115.0 157.5 170.0 207.5 227.5
Absorbed current A 84 92 168 184 254 273 334 364
Water flow m³/h 48.2 53.3 96.3 107.0 143.9 160.0 193.1 213.2
Pressure drop kPa 30 37 33 40 37 45 45 55
Max water flow m³/h 75.0 75.0 150.0 150.0 225.0 225.0 325.0 325.0
Water volume L 44.5 44.5 85.5 85.5 148.0 148.0 276.5 276.5
Water flow m³/h 57.5 63.2 114.1 126.0 171.9 189.0 228.2 252.2
Pressure drop kPa 21 18 24 18 22 18 44 36
Max water flow m³/h 93.0 122.0 202.0 244.0 302.0 365.0 286.0 357.0
Water volume L 26.5 82.5 135.5 161.5 206.0 250.0 250.0 300.0
Quantity 1 1 1 1 1 1 1 1
Refrigerant charge kg 165 165 185 200 315 330 415 430
Powerstream Turbo
Kaltra Innovativtechnik GmbH
Max-Reger-Str. 44 • 90571 Schwaig • Germany
 info@kaltra.de
 +49(0)911 715 32021
(1) Water 100%; Chilled water temperatures: 7/12°C; Condenser water temperatures: 30/35°C
Compressors Oil-free Turbocor
Evaporator Flooded shell-and-tube
Condenser Shell-and-tube
Refrigerant circuit R134a
Model C300S C400S C500S C600S C700S C800S C1000S C1200S C1400S C1600S C1800S
Frame size F1 F1 F1 F1 F1 F5 F4 F5 F5 F6 F6
F1/1 F1/1 F1/1 F2/1 F2/1 F3/1 F2/1 F3/1 F3/1 F4/1 F4/1
Cooling capacity1
kW 280 380 460 560 760 840 920 1140 1380 1520 1840
Energy efficiency (EER) kW/kW 5.18 5.19 5.20 5.19 5.21 5.22 5.34 5.43 5.31 5.41 5.32
ESEER 8.45 8.45 8.64 8.70 8.89 8.53 8.59 8.72 8.57 8.78 8.74
IPLV (ARI 550/590) 9.25 9.37 9.55 9.43 9.71 9.29 9.40 9.62 9.42 9.63 9.53
Net weight kg 1800 1880 2120 2580 2940 3770 3080 4630 4750 5790 6680
Quantity 1 1 1 2 2 3 2 3 3 4 4
Capacity modulation % 25.0÷100.0 25.0÷100.0 25.0÷100.0 12.5÷100.0 12.5÷100.0 7.5÷100.0 12.5÷100.0 7.5÷100.0 7.5÷100.0 7.5÷100.0 7.5÷100.0
Power input kW 54.0 73.2 88.5 108.0 146.0 160.8 172.2 210.0 260.0 280.8 346.0
Absorbed current A 87 117 142 173 234 258 276 340 418 450 554
Water flow m³/h 48.2 65.4 79.0 96.3 130.8 144.0 158.0 196.0 236.9 261.3 316.4
Pressure drop kPa 32 29 27 32 27 32 56 35 40 30 36
Max water flow m³/h 80.0 103.0 132.0 142.0 218.0 225.0 198.0 289.0 330.0 410.0 440.0
Water volume L 47.0 60.0 75.0 85.0 125.0 198.0 140.0 254.0 300.0 370.0 390.0
Water flow m³/h 57.5 78.0 94.5 114.1 156.0 171.9 189.0 232.2 282.0 310.0 375.0
Pressure drop kPa 13 22 22 26 20 40 32 40 49 49 49
Max water flow m³/h 132.6 132.6 170.2 181.2 280.0 229.2 279.6 309.0 338.8 391.2 474.5
Water volume L 101.0 101.1 125.0 135.0 226.0 236.0 250.0 315.0 345.0 428.0 572.0
Quantity 1 1 1 1 1 1 1 1 1 1 1
Refrigerant charge kg 105 95 105 160 230 270 250 380 410 410 450