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Air Compressor ZV series

ZV series

ZV55WS-RZV55WS-R

ZV55WS-R

  • Inverter control + optimal control of air volume increase.
  • The inverter monitors the revolution speed and the increase and decrease of air.
  • The optimal load which our customer wants is always considered.

Outside appearance | Base
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Model ZV55WS3i-R
Items Unit
Power frequency Hz 50 / 60
Power supply voltage V 200 / 220 / 380 / 400 / 415 / 440
Free air delivery(0.7MPa) m3/min 9.5 (11.0) *
Delivered air pressure MPa 0.7
Delivered air pressure MPa 0.54 to 0.93
pressure control method   Constant pressure control by inverter
Intake air pressure& temperature   Atmospheric pressure (0 to 40°C)
Main motor power kW 55
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 0.08 / 0.12 [ 50 / 60Hz ]
Oil filling quantity l 60
Cooling water amount l/min 80
Dryer Air dew point at outlet °C 10 (under pressure)
Refrigerant   R·407C
Discharge pipe diameter R 2
Dimension,L×W×H (body) mm 2325 × 1200 × 1700
Total mass (dry state) kg 1440
Noise level [OP1.5m] dB·A 64
Dimension,L×W×H (without dryer) mm 1885 × 1200 × 1700

Note: If you want to know the 0.5MPa specifications, please ask us.
*1: The figure in ( ) is the discharge air volume of the 0.5MPa specifications.

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.