Low Noise Motor

Title

Low Noise Motor

Brief Introduction

For three - phase a . c . machines ,50 Hz or 60 Hz , intended to be directly connected to distribution or utilisation systems , the rated voltages shall be derived from the nominal voltages given in IEC 60038.

NOTE For large high - voltage a . c . machines , the voltages may be selected for optimum performance . For a . c . machines connected to static converters these restrictions on voltage , frequency and waveform do not apply . In this case , the rated voltages shall be selected by agreement . For electrical machines with Type I insulation systems according to IEC 60034-18-41, which are specifically designed for supply by voltage source converters , the manufacturer can assign an impulse voltage insulation class ( IVIC ) according to IEC 60034-18-41 for the insulation system . In this case , the insulation system should be suitable for IVIC C for phase - to - phase and IVIC B for phase - to - ground or as otherwise agreed to between the user and the manufacturer . The IVIC level shall be given in the documentation and preferably on the nameplate ( see 10.2).

NOTE For more information on special considerations for converter fed machines , see IEC TS 60034-25. Any bus transfer or fast reclosing of an a . c . machine , as it might occur , for example , due to the voltage ride through requirements of grid codes , can lead to very high peak currents endangering the stator winding overhang and to a very high peak torque of up to 20 times rated torque endangering the mechanical structure including the coupling and the driven or driving equipment . Bus transfer or fast reclosing is therefore only allowed if specified and accepted by the manufacturers of electric machine and driven equipment . For ratings s 10 MW or MVA , slow reclosing exceeding 1.5 times the open circuit time constant is allowed , if specified and accepted by the manufacturers of the electric machine and the driven equipment . For ratings >10 MW or MVA , the allowed minimum time for slow reclosing should be determined by transient analysis of the complete system by the system integrator and is allowed if accepted by the manufacturers of the electric machine and the driven equipment .

Main Technical Parameters

Application

                                .                        

Chemistry                                      Power Station                                    Cement                                            Pump

CHOOSE SIMO, CHOOSE QUALITY!

Hot Tags: Low Noise Motor, China, suppliers, manufacturers, factory, customized , quotation, low price, in stock, made in China, 4 pole 3 phase motor, energy saving motor, Low Voltage AC Motor, three phase squirrel cage induction motor, TEFC electric motor, ie5 electric motor