Kobelion VS Multi

VSMULTI_logo

○Discharge air volume
19.0-26.2m³/min
 (0.69-0.59MPa)
○110-150kW Class
VSMULTI_photo
Wide-Range Control implemented for large compressors
Already known for its high efficiency and high performance, the Kobelion series now challenges energy loss reduction for more than 110kW. Never-before-possible wide-range control was implemented through the multi-unit solution, thus making operation easier and enhancing reliability.
Wide Range Control
Focus of Energy Saving shifts from "Suppression" to "Effective use"
 
■By direct couple IPM high-speed motor to the compressor.  
Forcus of Energy Saving
-----
■Wider capacity control range
●Capacity control extended to a wider range of 5% to 106%
Uncompromising challenge to improve energy saving performance even for low load operation
●Low load operation of less than 30% is changed over to a single-unit operation, thus saving energy.
(About 4kW of energy is saved for a
10% load operation.)


Wider capacity control range
Enagy-saving performance graph
■ Introduction benefits
Kobelion-VS MULTI brings larger energy saving benefits than single-stage compressors or even two-stage compressors.
fig. Introduction
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Latest monitor focusing on easy-to-use operation
 
 
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Multi/single changeover operation
          
Multi/single unit control allows Kobelion-VS MULTI to perform a backup operation just in case.
Failure tolerance is the same as when running two 75kW compressors
Even if one unit fails, the Kobelion continues running the other unit separately to secure 50% air quantity.
Multi/Single changeover operation
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Built-in overhang direct-coupling construction

Energy loss is minimized by eliminating mechanical loss at power transmission components such as belts and gears in a conventional compressors. Also, the built-in overhang direct-coupling construction and totally enclosed structure of IPM high-speed oil-proof motor eliminate mechanical seal and thus reduce mechanical loss.screw compressor directly coupled
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Interior Permanent Magnet (IPM) high-speed motor
 
Equipped with the world's first IPM high-speed motor that enables Wide-Range Control.
Rotor
 
Supreme performance pursued by redesigning basic structures of the rotors
(the core component).
Environment Suitability
●Improved efficiency of oil separator element
Oil separation efficiency improves to 0.002cc/m3 at 0.69 MPa from 0.005cc/m3 of a conventional unit.
●Kobelion is designed with special emphasis on noise reduction. For reduction of low noise, sound quality as well as operating noise level are improved by thorough review of all spots that might be source of noise.
New type of rotor ?EBuilt-in overhang direct-coupling construction?E A motor cooling structure with oil cooling jacket is employed ?EChange of sound absorbing material.
●Equipped with Water-Removal function (Patent pending)
Self-dry function is featured as standard to remove moisture by microprocessor control, allowing frequent low loading operation.
 
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Reduced installation space enhances layout flexibility
space enhances layout flexibility
 
 
Water-Cooled Models (Compressor only)
VS2020W
VS2620W
Frequency   Hz
50/60 dual rating
Discharge air volume m3/min
19.0-20.2
24.8-26.2
Intake conditions
Pressure
Atmospheric pressure
Temperature ºC
2-40
Discharge conditions
Pressure(gauge  pressure)MPa
0.69-0.59
Temperature ºC
45ºC or less(under conditions of ambient temperature of 30ºC)
Discharge pipe diameter A
10K-80A flange
Shaft input power
kW
110(55x2)
150(75x2)
Compressor
motor
Output
Voltage V
380400415/400440
Specification
Totally enclosed, permanent magnet-type, 3-phase synchronism
Starting system
Inverter
Coolant(water)
Coolant volume L/min
160
200
Temperature ºC
30
Diameter of cooling water outlet/inlet connection pipe
Rc2/R2
Lubricant(oil) initial volume L
65x2
75x2
Normal dimensions (W x D x H) mm
2,600x1,500x1,560
Nominal weight
2,770
2,870
Noise dB(A)
67[66]
69[67]
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*
Discharge air volumes have been converted to compressor intake conditions(30°C).
*
Please be sure to use "KOBELCO genuine oil" or the lubricating oil recommended by KOBELCO.
*
Noise values are measured at a height of 1.0 m and at a distance of 1.5 m in all directions from the compressor package in anechoic chamber and under full-loading operation. Values within brackets [] are measured at a distance of 1.5 m from the front of the machine of and at a height of 1.0 m of it under full-loading operation.
*
Air produced by these compressors should not be used in respiratory equipment furnishing air for direct inhalation.
*
Specifications and descriptions are subject to change without notice.
*
Service factor(SF) of Main Motor is 1.1.
*
Be aware that a difference in water head level at cooling water inlet and outlet of 15 m or more may cause cooling water to flow too rapidly and cause the tube nest of the heat exchanger to erode . When the difference in water head level exceeds 15 m, adjust the water feed valve to reduce the difference to 15 m or less .

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