Cummins diesel generator should be equipped with what protection for daily use:
1. vertical differential maintenance: stator winding and its lead line phase short circuit maintenance.
2. horizontal differential maintenance: stator winding one phase inter-turn short circuit maintenance. Only when the stator winding of a phase has two or more parallel branches to form two or three neutral point leads, the installation of this maintenance.
3. single-phase grounding maintenance: the generator stator winding single-phase grounding maintenance.
4. Grounding maintenance of excitation loop: grounding fault maintenance of excitation loop.
5. low excitation, loss of magnetic maintenance: in order to avoid large generator set low excitation (excitation current is lower than the limit of the corresponding excitation current) or lose excitation (excitation current is zero), from the system to absorb a lot of reactive power and the system attack bad influence, 100MW and more capacity of the generator are installed with this maintenance.
6. Overload maintenance: the maintenance of signals when the generator runs beyond the extra load for a long time. Small and medium-sized generators only install stator overload maintenance; Large generator sets should be separately installed stator overload and excitation group overload maintenance.
7. stator winding overcurrent maintenance: when the generator longitudinal difference maintenance scale short circuit, and the maintenance of short circuit components or circuit breaker rebuffed action, this maintenance as the backup of external short circuit, but also as the backup maintenance of longitudinal difference maintenance.
Jiangsu Meiao Power Technology Co., Ltd. is an important manufacturer of diesel generators. Us ao-generator set manufacturers mainly manufacture and sell diesel generator sets, the power of generator sets is 3-3000KW, mobile station is 24-600KW, Marine emergency diesel generator set 24-800KW, gas generator set, heavy oil generator set and all kinds of imported series, special series (trailer, silent speaker, mobile lighthouse, container, etc.) diesel generator Group at the same time engaged in generator set maintenance and generator set accessories after-sales service.
