OIL-INJECTED ROTARY SCREW COMPRESSORS

OIL-INJECTED ROTARY SCREW COMPRESSORS
OIL-INJECTED ROTARY SCREW
COMPRESSORS
GA 7-37 VSD+ (7-37 kW/10-50 hp)
Small compressor, big ideas
Atlas Copco has turned the compressed air industry on its
head by redesigning the conventional layout of a typical air
compressor. Instead of the normal space-taking horizontal
design, the new GA 7-37 VSD+ has an upright, vertical,
low footprint layout. This saves valuable floor and work space,
eases maintenance access, accelerates manufacturing time,
and reduces the total cost of ownership for all customers.
Efficient
•On average 20% lower Specific Energy Requirement (SER)
than the current GA VSD models. Eco-efficient VSD+ reduces
energy consumption by on average 50% compared to the
current idling models.
•On top of energy savings, Free Air Delivery (FAD) increase of
up to 12% over the range.
THE NEW
REVOLUTIONARY
COMPRESSOR FROM
ATLAS COPCO
With its innovative vertical design, Atlas Copco’s GA
7-37 VSD+ brings a game-changing revolution in the
compressor industry. It offers Variable Speed Drive
as standard, a compact motor and footprint thanks
to its in-house design and iPM (Permanent Magnet)
technology. The GA 7-37 VSD+ reduces energy
consumption by on average 50%, with uptimes
assured even in the harshest operational conditions.
The GA 7-37 VSD+ is the air compressor of the future,
designed in-house by Atlas Copco. It will set a new
standard for years to come, positioning Atlas Copco
as a leader in the compressed air industry.
•Efficient fan motor (ERP 2015) reduces electricity consumption
and noise levels.
•Highest motor efficiency (iPM), outperforming IE3 efficiency
levels.
Reliable
•Low maintenance: fewer components, increased uptime.
•Worry-free: the GA 7-37 VSD+ has been extensively field-tested
over three years.
•Based on unique combination of proven technologies and
existing components, optimally brought together by
Atlas Copco’s unique experience and know-how.
Smart
•Elegant and revolutionary design.
•Frequency-controlled operation as standard (VSD+),
integrated dryer available.
•Fewer components & few options: impressive list
of standard features.
•Ecological design, efficient material usage.
INSIDE THE INNOVATIVE GA 7-37 VSD+
The GA 7-37 VSD+ is packed with innovative features that increase its efficiency, cut its energy consumption,
lower its noise levels, and reduce its operating costs. In addition, it meets or even exceeds all currently
applicable standards.
4
Innovative fan
•Based on the newest technologies.
•In compliance with ERP2015 efficiency.
•Low noise levels.
5
DRIVE TRAIN
Robust oil filter/separator
1
•Integrated bypass valve with the oil filter.
Interior Permanent Magnet (IPM) motor
6
4
•Very high efficiency: exceeds IE3.
•Easy maintenance.
•Compact, customized design for optimal cooling by oil.
6
•Designed in-house in Belgium.
Electronic no-loss water drain
•IP66 vs. IP55.
5
•No cooling air flow required.
•Oil-lubricated motor bearing: no (re)grease(ing), increased uptime.
•Included as standard.
•Efficient removal of condensate without loss
of compressed air.
•Manual integrated bypass for effective condensate
removal in case of power failure.
7
2
Element
•Made by Atlas Copco.
•Robust and silent.
7
Elektronikon® controller
9
•Integrated smart algorithms reduce system pressure
and energy consumption.
1
3
•Warning indications, maintenance scheduling
and online status visualization.
8
•Graphic display of key parameters (day, week, month)
and 32 language settings.
2
9
ED
PATENT
8
VSD+ cubicle
Inlet valve
•VSD+ superior to idling machines.
•No inlet arrestor.
•Electrical components remain cool,
enhancing lifetime of components.
•No blow off losses.
•Vertical design, fewer parts.
•Oil-cooled, pressure-tight.
•Dedicated drive for iPM technology motors.
•No gears or belts, no shaft seal.
•5% DC choke as standard.
•Compact: footprint down 60%.
•Heat dissipation of inverter in separate compartment.
3
Direct drive
•Maintenance free.
In almost every production environment, air demand fluctuates depending on different factors such
as the time of the day, week or even month. Extensive measurements and studies of compressed air
demand profiles show that many compressors have substantial variations in air demand.
Air demand
Air demand
Energy consumption
Air demand
Air demand
Time
Energy consumption
Fixed speed load/unload
Energy consumption
Time
GA VSD+ energy consumption
50%
SAVINGS
VSD+ FOR 50% AVERAGE ENERGY SAVINGS*
Atlas Copco’s GA Variable Speed Drive+ (VSD+) technology closely matches the air demand by automatically
adjusting the motor speed. Combined with the innovative design of the iPM (Permanent Magnet) motor,
this results in average energy savings of 50% and an average cut of 37% in the lifecycle cost of a compressor.
VSD+ works with permanent, in-house designed permanent magnet motors.
Why Atlas Copco Variable Speed Drive+ technology?
•On average 50% energy savings with an extensive flow range (20-100%).
•Integrated Elektronikon® Graphic controller controls the motor speed and high efficiency frequency inverter.
•No wasted idling times or blow-off losses during operation.
GA Fixed Speed
GA VSD+
•Compressor can start/stop under full system pressure without the need to unload with special VSD+ motor.
•Eliminates peak current penalty during start-up.
•Minimizes system leakage due to a lower system pressure.
Energy
Investment
Maintenance
•EMC Compliance to directives (2004/108/EG).
* Compared to fixed speed compressors, based on measurement performed by an independent energy audit agency.
A STEP AHEAD IN MONITORING
AND CONTROLS
The next-generation Elektronikon® operating system offers a wide variety of control and monitoring features
that allow you to increase your compressor’s efficiency and reliability. To maximize energy efficiency, the
Elektronikon® controls the main drive motor and regulates system pressure within a predefined and narrow
pressure band.
EXCELLENCE IN INTEGRATED AIR QUALITY
Untreated compressed air contains moisture and aerosols which increase the risk of corrosion and compressed
air system leaks. This can result in a damaged air system and contaminated end product. Maintenance costs
can far exceed air treatment costs. Our compressors provide the clean, dry air that improves your system’s
reliability, avoids costly downtime and production delays, and safeguards the quality of your products.
Save money and the environment
Avoid risk of corrosion and system leaks, and ensure the effective safe disposal of untreated condensate – all within ISO 14001 standards.
On average 50% energy savings with newly
designed integrated dryers
•Pressure dew point of 3°C (100% relative humidity at 20°C).
•Unique Saver Cycle Control, with ambient temperature sensor and based
on dryer load and relative humidity of compressed air, saves energy at
partial load.
•Heat exchanger cross-flow technology with low pressure drop.
•Zero waste of compressed air thanks to no-loss condensate drain.
•Reduced operating costs.
•Environmentally-friendly characteristics; zero ozone depletion.
•Global warming potential has been reduced significantly by an average
of 50% by reducing the amount of refrigerant in the new dryer.
Dual pressure set point
Most production processes create fluctuating demands which, in turn, can create
energy waste in low use periods. Using the Elektronikon®, you can manually or
automatically create two different system pressure bands to optimize energy use
and reduce costs.
Integrated Saver Cycles
Fan Saver Cycle reduces the energy consumption by switching off the fan in
light load applications. Using an ambient sensor to monitor the required dew
point suppression, the Elektronikon® starts and stops the dryer, minimizing
energy use.
Week timer
An on-board clock enables timers to be set up to support any working scheme –
per day, per week or completely customizable to your specific situation and needs.
Energy-saving contributors
Saver Cycle Control
Heat exchanger no-loss
condensate drain
Energy-efficient refrigerant
Low pressure drop
TECHNICAL SPECIFICATIONS
COMPRESSOR
TYPE
Maximum working
pressure WorkPlace
Installed
motor power
Capacity FAD* min-max
FLOW CHART GA VSD+ FF
Noise
level**
Weight
WorkPlace
Weight WorkPlace
Full Feature
bar(e)
psig
l/s
m³/h
cfm
kW
hp
dB(A)
kg
kg
5.5
7
9.5
12.5
5.5
7
9.5
12.5
5.5
7
9.5
12.5
4
7
9.5
12.5
4
7
9.5
12.5
4
7
9.5
12.5
4
7
9.5
12.5
4
7
9.5
12.5
80
102
138
181
80
102
138
181
80
102
138
181
58
102
138
181
58
102
138
181
58
102
138
181
58
102
138
181
58
102
138
181
7.2-21.9
7.0-21.7
6.8-18.0
7.3-14.2
7.3-32.9
7.3-32.5
7.0-27.2
7.6-23.5
7.2-42.3
7.1-41.8
6.8-35.5
7.3-27.9
15.1-63.9
14.9-62.5
17.1-53.6
16.4-43.5
15.3-76.9
15-75.1
17.3-65.2
17.1-54.1
14.9-86.3
14.5-85.5
17-78.4
16.4-64.5
15.1-98
15-97.4
17.1-85.6
16.7-72
15.3-116.5
14.8-115
17.1-102.3
16.4-86.7
25.9-78.8
25.2-78.1
24.5-64.8
26.3-51.12
26.3-118.4
26.3-117.0
25.2-97.9
27.4-84.6
25.9-152.3
25.6-150.5
24.5-127.8
26.3-100.4
54.4-230
53.6-225
61.6-193
59-156.6
55.1-276.8
54-270.4
62.3-234.7
61.6-194.8
53.6-310.7
52.2-307.8
61.2-282.2
59-232.2
54.4-352.8
54-350.6
61.6-308.2
60.1-259.2
55.1-419.4
53.3-414
61.6-368.3
59-312.1
15.2-46.4
14.8-46.0
14.4-38.1
15.5-30.1
15.5-69.7
15.5-68.8
14.8-57.6
16.1-49.8
15.2-89.6
15.0-88.6
14.4-75.2
15.5-59.1
32-135.4
31.6-132.4
36.2-113.6
34.7-92.2
32.4-162.9
31.8-159.1
36.7-138.2
36.2-114.6
31.6-182.9
30.7-181.2
36-166.1
34.7-136.7
32-207.7
31.8-206.4
36.2-181.4
35.4-152.6
32.4-246.8
31.4-243.7
36.2-216.8
34.7-183.7
7.5
7.5
7.5
7.5
11
11
11
11
15
15
15
15
18
18
18
18
22
22
22
22
26
26
26
26
30
30
30
30
37
37
37
37
10
10
10
10
15
15
15
15
20
20
20
20
25
25
25
25
30
30
30
30
35
35
35
35
40
40
40
40
50
50
50
50
62
62
62
62
63
63
63
63
64
64
64
64
67
67
67
67
67
67
67
67
67
67
67
67
67
67
67
67
67
67
67
67
193
193
193
193
196
196
196
196
199
199
199
199
367
367
367
367
363
363
363
363
373
373
373
373
376
376
376
376
376
376
376
376
277
277
277
277
280
280
280
280
288
288
288
288
480
480
480
480
485
485
485
485
490
490
490
490
500
500
500
500
500
500
500
500
16
50 / 60 Hz version
GA 7 VSD+
GA 11 VSD+
GA 15 VSD+
GA 18 VSD+
GA 22 VSD+
GA 26 VSD+
GA 30 VSD+
GA 37 VSD+
14
13
12
9
15*
7
17
10
8
11
1
6
4
5
* Unit performance measured according ISO 1217 ed. 4 2009, annex E, latest edition.
** Mean noise level measured at a distance of 1 m according to ISO 2151:
2004 using ISO 9614/2 (sound intensity method); tolerance 3 dB(A).
Reference conditions:
- Absolute inlet pressure 1 bar (14.5 psi).
- Intake air temperature 20°C, 68°F.
H
FAD is measured at the following effective working pressures:
- 5.5 bar(e)
- 7 bar(e)
- 9.5 bar(e)
- 12.5 bar(e)
Maximum working pressure:
- 13 bar(e) (188 psig)
H
2
L
W
L
Standard
Standard
Full Feature
Full Feature
DIMENSIONS
GA 7-15 VSD+
GA 18-37 VSD+
3
W
L (mm)
W (mm)
H (mm)
L (mm)
W (mm)
H (mm)
630
780
610
811
1420
1590
630
780
985
1273
1420
1590
1
2
3
4
5
6
7
8
9
Thermostatic bypass valve
10
11
12
13
14
15
Oil filter
Inlet filter
Sentinel valve
Screw element
Interior permanent magnet motor (iPM)
Air/oil vessel + separator
Safety valve
Oil separator
16
17
Minimum pressure valve
Solenoid valve
After-cooler
Fan
Wet compressed air
Condensate
Dry compressed air
Oil-cooler
Intake air
Electronic drain (* mounted on
after-cooler on models without dryer)
Air/oil mixture
Dryer (Full Feature option)
Condensate prevention cycle
Oil
We stand by our responsibilities towards our customers, towards the environment and the
people around us. We make performance stand the test of time. This is what we call –
Sustainable Productivity.
www.atlascopco.com
2935 0981 43 © 2014, Atlas Copco Airpower NV, Belgium. All rights reserved. Designs and specifications are subject to change without notice or obligation. Read all safety instructions in the manual before usage.
COMMITTED TO SUSTAINABLE PRODUCTIVITY
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising