Cummins generator set in a long time after the placement of dust will be more and more, which is also a common problem of many mechanical equipment, the increase of dust let the diesel engine to add a lot of trouble. The dust will bring bad effect on the insulation performance of diesel generator set. Professional generator manufacturers tell you the specific common problems as follows:
First, the dust on the insulation surface combines with oil steam and water for a long time to form a hard shell, which gradually cracks under the action of thermal stress, so that the insulating film of the motor is also followed by cracks, which is easy to cause the motor turns, phases and insulation breakdown failure.
2. Due to the mechanical and chemical action of dust, the insulation of winding is eroded, which is the main factor to destroy the insulation layer.
3. The dust immersed in the insulation gap plays an “abrasive” role on the conductor insulation of electromagnetic vibration, resulting in inter-turn short circuit fault.
Four, due to the influence of dust, Cummins generator set will make the motor medium loss Angle tangent increase, leakage current increase; Shorten the creepage distance of insulation meter.
5. Dust on the surface of windings, iron cores and housing will make the motor’s cooling conditions worse and reduce the effect of ventilation and cooling.
Six, when the dust is non-conductive and non-flammable material when the coil of the motor has little impact, but it has an impact on the bearing at both ends of the motor shaft, bearing bad cause stator and rotor phase wear heating, and burn the coil.
Seven, the dust and sand in the air of Cummins generator set is relatively more, which is easy to cause the rapid loss of some parts of the unit. If not handled properly, it will lead to a lot of dust in the machine, which makes some pipes of the unit clogged.
Post time: Dec-07-2022