The protection method of Cummins generators is set by the technology and design department, Cummins generators at least should has the following protection method when running:
1.The protection project of Cummins generators
(1) the protection project of Cummins generators reflect the Lead phase short circuit longitudinal differential protection of Cummins generators.
(2) The protection project of Cummins generators reflect single-phase ground fault protection of Cummins generators.
(3) The protection project of Cummins generators reflect over-current protection of stator winding.
(4) The protection project of Cummins generators reflects the over-voltage protection (when using static excitation system).
2.Negative sequence current overload protection of Cummins generators
Negative sequence current excitation circuit overload protection is device that detectthe grounded fault protection or ground fault detection of Cummins generators. When the Cummins generators take brushless exciter, in the machine, it can detect rotor equipped with a coil, armature and the rectifier bridge excitation insulation resistance is reduced (or even a little ground) the ground fault detection devices. Run test at least once every 8 hours, if there is abnormal signal, it should be immediately and promptly find out the reasons for downtime.
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