目前客车5千瓦发电机KP-2A控制箱原有的过压保护电路经过几年使用以后,各段都反映此电路容易误动作,易受脉冲干扰而烧保险丝。特别是唐山工厂制造的软席乘务室电扇及各种硬卧车乘务室电扇,对过压保护影响极大,只要一开开关过压保护就会动作。由于这种现象,我段乘务员反映较大, At present, the original overvoltage protection circuit of the KP-2A control box of a 5 kilowatt generator of a passenger car after several years of use shows that the circuit is prone to malfunction and is susceptible to pulse interference and burns fuses. In particular, Tangshan factory manufacturing soft seats Flight Room and a variety of hard sleeper cab fuses, a great impact on over-voltage protection, as long as the opening switch over-voltage protection will be action. Because of this phenomenon, my flight attendant reflected more,