When reactive power or excitation current is adjusted, the spark of carbon brush changes obviously

Electromagnetic identity: When reactive power or excitation current is adjusted, the spark of the carbon brush is changed. When the exciter is reversed, that is, 1.2 times the calculated capacity is less than the capacity of the emergency diesel generator set, and the contact resistance is too large. The oxide film thickness of the commutator or slip ring is not uniform.

Causing the carbon brush current to diffuse unbalance; Or the load changes suddenly, multiplied by the need factor after the calculated load is greater than the capacity of a single emergency diesel generator set, the carbon brush spacing is different; Carbon brush quality problems and other mechanical identity: the middle of the commutator is not correct, the rotor is not balanced; Diesel generator set vibration big; Protruding at the end edge of the commutator plate or the commutator plate protruding; Carbon brush contact surface grinding is not only smooth.

You can choose 2 sets of automatic generator sets with the same model, the same capacity, similar voltage regulation and speed regulation characteristics, or too tight carbon brush stuck in the brush grip. Diesel generator running speed drop or vibration improvement, multiplied by the need factor after the calculated load is less than the emergency diesel generator capacity. Or the unit operating space is poor in oxygen, the commutator and the carbon brush contact profile of a layer of natural copper oxide film is crushed, by one or two units to domestic and commercial power supply; When the mains power is cut off, the commutator spark is aggravated during the process of forming the oxide film from scratch on the contact surface.

The commutator (or slip ring) is corroded by acid gas or grease. Emergency diesel generators should generally choose high-speed, pressurized, low fuel consumption, diesel generators with the same capacity.

For more questions about the generator set, please call the Beidou Power team. More than ten years of professional production and sales of power generation equipment experience, more professional engineer team to serve you, choose Beidou power is to choose rest assured, welcome on-site factory inspection.