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由于 DS—74电刷掉炭严重,对于自通风的 ZQFR—1350型发电机(简称1350发电机)容易造成积炭,火花变大,甚至引起换向器烧伤、变形等严重后果。我厂自1979年以来已在1350电机上改用 DS—52电刷(除小部分仍在试验外)。DS—52电刷无积炭现象,但其接触压降小、换向区窄,使换向困难。在我车间经反复调试合格的电机,当工况改变时火花又变了。1979年3月8日至4月12日连续有五台机车的发电机在水阻试验站试验时,火花达11/2级强,并有灼痕,而电机试验站的记录,其火
As DS-74 brush out of carbon serious, self-ventilated ZQFR-1350-type generator (referred to as the 1350 generator) easily lead to coke, sparks larger, and even cause commutator burn, deformation and other serious consequences. Our factory has changed the DS-52 brush on the 1350 motor since 1979 (except a small part is still under test). DS-52 brush no coking phenomenon, but the contact pressure drop is small, the commutation zone is narrow, so that commutation difficult. In my workshop after repeated debugging qualified motor, when the conditions change, the spark has changed. March 8, 1979 to April 12, 1979 five locomotive generator continuous water resistance test station in the test, the spark of 11/2 level strong, and there is burning marks, and the motor test station records, the fire