Выбор аппаратуры управления, защиты, регулирования, контроля параметров и перемещения для надёжной безаварийной работы электропривода, страница 9

Рисунок 3.8 – Схема реализации защиты от повышения напряжения на

   якорной обмотки ДПТ (защита от превышения скорости)

                                                                                                                                                                                                               А      В      С                                           SB2                                                                                                          +                          KT1.1                    -                                KM1               SB1                                           KM1                                                                                                                                                                                                                                                                                                                                                      KM1.1                                                                                                                                                                                                                                                                                                  KT1                                                                                                 KM1.2   KА1.1                                                                                                                                                                                                                                                                                                                               KА1          KM2                                                  KM2                                                                                 +                                                                                                                                                                                                                      LM                      KM2                                                                                                                                             -                                                             

Рисунок 3.9 – Схема управления синхронным двигателем,
                                  обеспечивающая защиту от затянувшегося пуска

Шины энергоснабжения                                                                                                                                                       А                                                                                                                                                                                              В                                                                                                                                                                                             С                                                                                                                                                                                              N                                                                                                                                                                                                                                                                                                                                                                                                                            QF1             SB2                                                                                                                                                    SB1                                                      SQ1.1          KM1                                                                                                                                                                                                                                                                                                                                    KM2.2                                                                                                                                                                                                                                                                                                                                  KM1.1                                                                                                                   КМ1                       КМ2                                                                                                                                                                                                                                                                                                                                                                                                                                   SQ2.1              SQ1.2                              KM2                                                                                                                                                                   KM1.2                                                                                                                                                                                                                                                                                                                                                          КМ1.2                                      

                                                                                                                                                                            HL1

                                        M1                                                                      SQ2.2                                                       

Рисунок 3.10 – Схема включения конечных выключателей в схему управления реверсивного

                                     электропривода, обеспечивающая путевую защиту в обоих крайних положениях

                                           рабочего органа с сигнализацией одного крайнего (исходного) положения