• DRG MOTOR – SINGLE PHASE ASYNCHRONOUS ELECTRIC MOTORS
    “Compact Power, Silent Operation, High Efficiency.”

    What is a Single Phase Asynchronous Motor?

    In locations where electrical energy is supplied as single-phase (220V) and three-phase systems are not available, single-phase asynchronous motors provide the most efficient solution.
    Thanks to their simple, reliable, and economical structure, they are the most preferred motor type for residential, small industrial, and commercial systems.

    These motors operate on the asynchronous principle: the stator winding generates a single-phase magnetic field, which causes the rotor to rotate and produce mechanical energy.
    Their compact size and easy installation make them compatible with a wide range of applications.

    The DRG MOTOR Single Phase Series delivers high performance in small systems: silent, powerful, and durable.

    Construction Features of DRG MOTOR Single Phase Series

    Key Components:

    • Stator: 100% pure electrolytic copper winding – high conductivity, low loss

    • Rotor: Cage-type rotor – low inertia and fast response

    • Body: Cast iron (GG20)

    • Fan: Aerodynamic plastic – ensures silent airflow

    • Bearings: SKF / C&U – silent, long-lasting

    • Capacitor: Available in Run (single) and Start & Run (dual) options

    Technical Specifications:

    FeatureValue / Description
    Power Range0.18 kW – 3.0 kW
    Voltage220V / 50Hz
    Speed750 / 1000 / 1500 / 3000 rpm
    Body MaterialCast Iron or Aluminum
    Insulation Class       F Class (155°C)
    Protection Class   IP44 / IP55
    Mounting TypesB3, B5, B14, B35

    DRG MOTOR single-phase motors are available in Single Capacitor (CSIR) or Dual Capacitor (CSCR) designs.

    Single vs Dual Capacitor Systems

    Single Capacitor Motor (CSIR – Permanent Capacitor):

    • Operates with a continuous running capacitor

    • Low current draw and low noise

    • Ideal for fans, pumps, and ventilation systems

    • Medium starting torque

    Dual Capacitor Motor (CSCR – Start & Run Capacitor):

    • Includes both starting and running capacitors

    • Suitable for machines requiring high starting torque

    • Preferred for presses, compressors, small conveyors, mixers

    FeatureSingle Capacitor       Dual Capacitor
    Starting Torque     Medium            High
    Noise        Low            Low
    Efficiency      High            Very High
    Application      Fan, Pump            Compressor, Press, Mixer

    DRG MOTOR provides the correct capacitor configuration based on application.

    Noise, Vibration, and Cooling Performance

    The DRG MOTOR Single Phase Series stands out with silent and stable operation.
    Every motor is tested for noise and balance after production.

    🔊 Noise Levels (dB(A)):

    Power RangeNoise LevelTest Standard
    0.18 – 1.1 kW55–60 dB(A)EN 60034-9
    1.5 – 4.0 kW60–68 dB(A)EN 60034-9

    Vibration Levels (mm/s – RMS):

    Test Standard        Value       Description
    ISO 10816     ≤1.8 mm/s  Normal operation
    Special balanced version     ≤1.2 mm/s   Low-vibration applications

    Cooling and Thermal Protection:

    • Maximum winding temperature: 110°C

    • Thermal rise: <75K

    • Thermal protection (PTC / PT100) available

    DRG MOTOR combines silent operation with long-lasting bearing design. Noise, vibration, and temperature are measured at the factory.

    Technical Data and Test Procedures

    General Technical Data:

    FeatureValue / Description
    Power Range0.18 – 3.0 kW
    Voltage220V / 50Hz
    Frequency50 / 60 Hz
    EfficiencyHigh efficiency equivalent to IE2 / IE3
    BodyCast Iron
    ProtectionIP44 / IP55
    InsulationF Class
    Noise55–68 dB(A)
    Vibration≤1.8 mm/s
    Duty TypeS1 (Continuous)

    Test Procedures:

    • Winding resistance test

    • Insulation resistance test (500V Megger)

    • Capacitor capacity test

    • Vibration analysis (ISO 10816)

    • Noise test (EN 60034-9)

    • Rotor balance test (G 2.5)

    • Thermal analysis with camera

    • Continuous operation test (S1 – 2 hours)

    Every DRG MOTOR single-phase motor is tested at nominal load for 2 hours before delivery.

    Applications and Advantages

    Applications:

    • Water pumps and booster systems

    • Industrial fans

    • Air compressors

    • Conveyor and feeding systems

    • Agricultural machinery

    • Mixers

    • Small presses

    • Workshop machines and lathes

    Advantages of DRG MOTOR Single Phase Series:

    • High Starting Torque: Smooth initial movement under heavy loads

    • Silent & Low Vibration Operation: 55–68 dB range

    • Long-lasting Bearings and Windings

    • High Efficiency: IE2 / IE3 equivalent

    • IP55 Protection: Complete safety against dust and moisture

    • In-stock Delivery: 0.18 kW – 4.0 kW

    • 2-Year Warranty: Nationwide service and technical support

    “DRG MOTOR – Maximum power in a single phase, reliability in every phase.”

    Conclusion: Silent Power, Compact Performance

    DRG MOTOR Single Phase Asynchronous Electric Motors, with their compact design, silent operation, high torque, and long life, are the most reliable solution for industrial and commercial systems.

    “Small size, big performance.”

    DRG MOTOR – Silent Power, Efficient Solution.