Company Marelli Motori She has developed a wide range of models of AC hydro generators of various designs and a wide range of power values up to 9,500 kVA covering low, medium and high levels. An excellent solution for hydroelectric power plants, they are installed on any type of turbine (bucket, radial-axial, rotary-blade, Turgo, cross-flow).
This model C3G - C4G It is an induction machine capable of operating in two modes, depending on the speed of rotation, as an engine or as a generator. The advantages of such devices over synchronous types are the absence of the need for voltage regulators and exciters (frequency and voltage are set by the electrical network), simplicity of design (no diodes, brushes and collector rings) and, finally, relatively low maintenance costs.
The generator structure is enclosed in a rigid frame made of durable steel and additional stiffeners for even greater strength. Cast iron body (grey and with spherical graphite), forged shaft made of laminated carbon steel, diameter from 290 mm and above, design on request. The stator/rotor windings are coated with unsaturated polyester and polyamide resins, insulation class – H (synthetic enamel). Installation only in a horizontal position.
Technical characteristics of the C3G - C4G series of asynchronous hydrogenators of open design (ODP).
- Rated power: up to 2800 kVA;
- Rated operating voltage: up to 6600 V;
- Industrial frequency: 50 Hz (European standard)/60 Hz (North American standard);
- Overall height: 315 – 710 mm;
- Mounting design: IM B3, V1 and V10 according to IEC60034-7;
- The degree of protection of the case: IP23, optional up to IP56;
- Degree of protection: IC 01;
- Insulation class: H;
- Temperature class: H/F.
Standard sizes
