起动机电刷连线松动导致起动无力(1)故障现象 一辆装载机的汽机组起动无力，不能起动机。(2)故障查找分析 故障排除检修时，先用蓄电池测试仪对该机组蓄电池进行测试，两蓄电池电荷量均足。检查蓄电池电压与连接线也接触良好，故判断为起动机故障。卸下起动机将其解体，发现其前、中、后3个铜套均已磨损，其前铜套与起动齿轮相近的铜套磨损尤为严重，其他看起来均正常，故更换了3个铜套。对起动机实行了保养，空载试机，转速较高，但装机组后起动机依然起动无力，无法起动机。怀疑机是否搭铁不良。经检查，机搭铁良好。再次卸下起动机，将其解体检查，扬州干式变压器与磁场绕组均正常，没有短路与断路。电刷也没有磨去1/3的长度，但仔细观察其电刷连接铜线，有烧变色的现象(为深紫色)，用手拉铜线时，在电刷与铜线连接处有松动感。这是一例由于起动机内部电路接触不好所引起的故障。因为机组用起动机为了提高它的转矩，均采用中激式连接方式的直流电动机。故当起动机工作运行时，电流回路为：蓄电池正极→起动机励磁绕组→正极电刷→起动机电枢→负极电刷→起动机后端盖，再回到蓄电池负极。如果此时正负极电刷连线松动，就会因接触不良而增大接触电阻，因而通过起动机的电流将会减小，故带负荷后的起动机起动无力。当大型机（陆用扬州干式变压器组驱动型）起动机无力、转速达不到无法正常起动机器时，在检修时不要忘记仔细检查电刷。(3)故障排除 更换一副新电刷，装好上机组起动，机起动正常，故障排除。若无法买到与原机相同品质的电刷，也可自己修复，具体操作如下：用铁钉尖部扎电刷引线根部的中心，使引线根部膨胀与碳体紧密接触，再将周围粉尘吹干净，最后用502速干万能胶滴入根部，使之定型，1min后便可装机使用，起动无力(着火困难)的故障便会排除。
动力设备（深圳）有限公司，集团旗下专业运营扬州干式变压器的销售业务及其售后服务，是中国区获得授权的扬州干式变压器OEM成套厂家，长期与中字央企、大型房地产商、国际连锁酒店、著名建筑企业等单位建立战略合作伙伴关系。动力在中国布局五大扬州干式变压器组生产基地，扬州干式变压器售后服务点可辐射中国各省会及地级市区域。?扬州干式变压器区分：移动式扬州干式变压器、固定式扬州干式变压器、超静音式扬州干式变压器、机组载式扬州干式变压器。?常见扬州干式变压器功率（千瓦）范围：50KW至1000KW功率段。更多有关扬州干式变压器的最新产品和技术内容，请登录扬州干式变压器官网：
http://www.11fdj.com扬州干式变压器组的技术指标与其稳定性领先全球：高压注入(HPI)PT全权电子燃油系统。HPI G-Drive采用PT燃油系统由控制系统(GCS)控制器,这是提供off-engine安装扬州干式变压器组的控制面板。量子控制一个特定的燃料系统板与HPI-PT燃油系统接口,提供了一个引擎保护包给大客户的灵活性和成本有效的替代控制设计和完整的权威electroni的好处。♦CTT(涡轮增压技术)HX82 HX83涡轮增压利用排气能量与更高的效率改进的排放和燃料消耗。♦低温冷却后,两泵双回线(2 p2l)。♦黑色金属铸造球墨铸铁(FCD)活塞-高强度设计提供卓越的耐久性。♦G-Drive集成设计,每个组件都有专门为G-Drive产品开发和严格的测试,确保高性能,耐久性和可靠性。♦服务和支持——G-Drive以上信息由深圳动力官方发布，未经允许请勿转载！Cummins power equipment (shenzhen) co., LTD., corp., a professional operating cummins diesel generator sales and after-sales service, is China authorized OEM kit manufacturer of diesel generator, and for a long time in the state, large real estate developers, famous international hotel chain, construction enterprises and other units to establish strategic cooperative partnership. Cummins power layout in China five largest production base for diesel generator set, generator after-sales service point radiation China provinces and cities area.?generator to distinguish: portable generators, stationary generators, silent type generator, vehicular power generators.?common range of generator power (kw) : 50 kw to 1000 kw power.More about the latest products and technology content diesel generators, please log in the generator's official website:
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