ST Service & Trading Sdn Bhd / ST M&E Prudence Sdn Bhd
26-1, Jalan SP 3/3,
Taman Saujana Puchong,
47110 Puchong,
Selangor, Malaysia.
+603- 80689843
+6016-3230843
+603- 80689843

i-14150W

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i-14150W Inverter - Water Cooled Mitsui Seiki Air Compressors - Oil Free


- With an inverter installed, total energy saving measures can be taken.
- The environmentally friendly water lubrication compressor without using oil at all (optimal for ISO 14000).
- Since water performs lubrication, sealing and cooling, high efficiency is achieved by ideal isothermal compression.
- Direct-coupled driving achieves the highest efficiency in its class, and the water lubrication saves maintenance work.
- Low noise, less vibration, slower rotation, and low temperature.
- Optimum for plants and large-scale factories.

Items Unit Details
Power frequency Hz 50 / 60
Power supply voltage V 380 / 400 / 415 / 440
Free air delivery (0.7MPa) m3/min 25.0 (25.9)*
Delivered air pressure MPa 0.7 (0.39)*
Pressure control method - Constant pressure control by inverter
Intake air pressure & temperature - Atmospheric pressure (2 to 40°C)
Main motor power kW 150
Motor type - 8p,totally-enclosed-fan-cooled permanent magnetic rotator adjustable-speed synchronous motor (IPM motor)
Starter - Inverter
Drive system - Direct coupled motor
Cooling system - Water cooled
Fan motor power kW 0.15 / 0.22 
Lubrication water amount 135
Dryer Air dew point at outlet °C -
Refrigerant kW -
Discharge pipe diameter R 3BJIS10K Flange
Total mass(dry state) kg 2,400
Noise level [OP1.5m] dB·A 66 to 69
Dimension,L×W×H (body) mm 2,750 × 1,200 × 1,800

Outside Appearance



Adoption of the latest IPM (internal permanent magnet) motor!

Structural comparison of the permanent magnet motor and the induction motor

By installing the latest IPM motor (internal permanent magnet motor) which contains a permanent magnet in the latest rotor, the compressor is made smaller and the rotation is made faster. If compared with conventional induction motors, the IPM motor does not cause electricity loss or slipping of the rotor, thus drastically enhances the motor efficiency. Combined with Mitsui Seiki's advanced inverter, the total efficiency also overrides that of single induction motors. Heat generation is reduced, leading to further energy saving. Also, the motor direct-coupled driving system eliminates the loss of power, improves the engagement and the machining accuracy of the compressor's main parts, and achieves the efficiency which is much higher than conventional machines.


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