配电变压器高、低压侧无熔断器, 有的虽安装跌落式熔断器, 但采用铝丝或铜丝替代熔丝, 致使低压短路或过载时熔丝无法正常熔断而烧毁配电变压器。配电变压器的高、低压熔体配置容量过大, 从而造成配电变压器严重过载时烧毁配电变压器。

原因(yin)现今的(de)(de)(de)(de)电(dian)(dian)(dian)(dian)费(fei)(fei)(fei)类(lei)目(mu)，基本上(shang)都客服选(xuan)取220V供气,渐渐人们活水平面(mian)的(de)(de)(✅de)(de)提高了(le)，家电(dian)(dian)(dian)(dian)费(fei)(fei)(fei)器的(de)(de)(de)(de)增添(tian)。格(ge)外是电(dian)(dian)(dian)(dian)磁感(gan)应灶、榨(zha)榨(zha)汁(zhi)机、电(dian)(dian)(dian)(dian)饼铛的(de)(de)(de)(de)增加，且(qie)电(dian)(dian)(dian)(dian)费(fei)(fei)(fei)时长更集约化的(de)(de)(de)(de)现象，有作(zuo)业中接电(dian)(dian)(dian)(dian)所以(yi)性(xing)和菅(jian)理(li)不(bu)完美, 诱发(fa)供配电(dian)(dian)(dian)(dian)变电(dian)(dian)(dian)(dian)器功(gong)率因(yin)数补偿(chang)不(bu)稳定(ding)平衡, 不(bu)断程序运行使某相电(dian)(dian)(dian)(dian)机定(ding)子电(dian)(dian)(dian)(dian)绝(jue)缘光(guang)老化而损毁。

因此变(bian)(bian)供电箱(xiang)▨式低压(ya)变(bian)(bian)压(ya)器中的(d🙈e)(de)电隔热(re)胶珠、胶垫损坏裂(lie)纹(wen)而影响渗油, 长时的(de)(de)使用造成的(de)(de)电隔热(re)返潮后其性能指标减(jian)退而释放短路故(gu)障, 烧掉变(bian)(bian)供电箱(xiang)式低压(ya)变(bian)(bian)压(ya)器。

变(bian)(bian)配电(dian)(dian)盘箱(xiang)式(shi)电(dian)(dian)抗器(qi)(qi)(qi)的高、非(fei)高压(ya)(ya)钱路(lu)大部分数是由铺设钱路(lu)对接, 考(kao)虑(lv)到避雷(lei)(lei)器(qi)(qi)(qi)投产不尽早或不会有按照10 kV 避雷(lei)(lei)器(qi)(qi)(qi)和非(fei)高压(ya)(y꧟a)避雷(lei)(lei)器(qi)(qi)(qi),及其避雷(lei)(lei)器(qi)(qi)(qi)地(di)线功(gong)率电(dian)(dian)阻值达不到格(ge)的迹象， 产生遭雷(lei)(lei)击时过(guo)电(dian)(dian)阻值自燃变(bian)(bian)配电(dian)(dian)盘箱(xiang)式(shi)电(dian)(dian)抗器(qi)(𓆉qi)(qi)。

一部(bu)分供变供配电(dian)(dian)(dian)(dian)(dian)直(zhi)流(liu)(liu)直(zhi)流(liu)(liu)电(dian)(dian)(dian)(dian)(dian)干式(shi)(shi)电(dian)(dian)(dian)(dian)(dian)力变压(ya)(ya)(ya)(ya)器(qi)(qi)并没有(you)安装第(di)(di)一剩余(yu)时候(hou)电(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)工(gong)作护理(li)器(qi)(qi)( 漏电(dian)(dian)(dian)(dian)(dian)护理(li)器(qi)(qi)) , 或即便(bian)安装了第(di)(di)一护理(li)人下线(xiaꦫn)(xian)(xian)投用, 或根据接线(xian)(xian)(xian)头失误(wu)引(yin)起外部(bu)设备故障(zhang)时没有(you)的(de)(de)(de)(de)(de)工(gong)作断电(dian)(dian)(dian)(dian)(dian)。当供变供配电(dian)(dian)(dian)(dian)(dian)直(zhi)流(liu)(liu)直(zhi)流(liu)(liu)电(dian)(dian)(dian)(dian)(dian)干式(shi)(shi)电(dian)(dian)(dian)(dian)(dian)力变压(ya)(ya)(ya)(ya)器(qi)(qi)直(zhi)流(liu)(liu)直(zhi)流(liu)(liu)电(dian)(dian)(dian)(dian)(dian)侧有(you)等电(dian)(dian)(dian)(dian)(dian)位(wei)连接、黄灰过(guo)压(ya)(ya)(ya)(ya)时, 生成若是超过(guo)电(dian)(dian)(dian)(dian)(dian)机(ji)(ji)(ji)额定(ding)功率电(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)20～30 倍(bei)的(de)(de)(de)(de)(de)过(guo)压(ya)(ya)(ya)(ya)电(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)效应在直(zhi)流(liu)(liu)直(zhi)流(liu)(liu)电(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)机(ji)(ji)(ji)绕(rao)(rao)(rao)线(xian)(xian)(xian)上, 电(dian)(dian)(dian)(dian)(dian)机(ji)(ji)(ji)绕(rao)(rao)(rao)线(xian)(xian)(xian)外部(bu)将生成高湿润特别大的(de)(de)(de)(de)(de)机(ji)(ji)(ji)器(qi)(qi)剪(jian)切(qie)力, 这一机(ji)(ji)(ji)器(qi)(qi)剪(jian)切(qie)力将引(yin)致(zhi)电(dian)(dian)(dian)(dian)(dian)机(ji)(ji)(ji)绕(rao)(rao)(rao)线(xian)(xian)(xian)压(ya)(ya)(ya)(ya)缩的(de)(de)(de)(de)(de)。过(guo)压(ya)(ya)(ya)(ya)外部(bu)设备故障(zhang)接触后剪(jian)切(qie)力也根据变大, 电(dian)(dian)(dian)(dian)(dian)机(ji)(ji)(ji)绕(rao)(rao)(rao)线(xian)(xian)(xian)若是多次重复(fu)获得(de)机(ji)(ji)(ji)器(qi)(qi)剪(jian)切(qie)力的(de)(de)(de)(de)(de)的(de)(de)(de)(de)(de)效应, 其绝缘层胶珠、胶垫等则会松(song)(song)脱破(po)裂(lie); 铁心固定(ding)夹板螺帽(mao)也会松(song)(song)脱, 直(zhi)流(liu)(liu)直(zhi)流(liu)(liu)电(dian)(dian)(dian)(dian)(dian)电(dian)(dian)(dian)(dian)(dian)机(ji)(ji)(ji)绕(rao)(rao)(rao)线(xian)(xian)(xian)轮廓或裂(lie)开, 才(cai)能引(yin)致(zhi)供变供配电(di♔an)(dian)(dian)(dian)(dian)直(zhi)流(liu)(liu)直(zhi)流(liu)(liu)电(dian)(dian)(dian)(dian)(dian)干式(shi)(shi)电(dian)(dian)(dian)(dian)(dian)力变压(ya)(ya)(ya)(ya)器(qi)(qi)在极(ji)快的(de)(de)(de)(de)(de)时候(hou)内损毁。

由于条件的(de)趋势,市民市民的(de)日子技术水平的(de)的(de)提(ti)升(sheng)。一些(xie)台区(qu)用(yong)电(dian)户热(re)负荷率在暂时性(xing)间内添(tian)加有(you)效, 但相对应的(de)的(de)供高(gao)低(di)压(ya)配电(dian)装(zhuang)(zhuang)置低(di)压(ya)配电(dian)变压(ya)器、供高(gao)低(di)压(ya)配电(dian)装(zhuang)(zhuang)置柜找不到尽早(zao)增(zeng)容, 长远过热(re)负荷率运动而诱(you)发(fa)供高(gao)低(di)压(ya)配电(dian)装(zhuang)(zhuang)🍸置低(di)压(ya)配电(dian)变压(ya)器烧断(duan)。

变配(pei)电(dian)设(she)备电(dian)力变电(dian)器(qi)、的与地(di)面(mian)(mian)网(wang)的的与地(di)面(mian)(mian)阻值(zhi)值(zhi)、避雷器(qi)等没按标(biao)准(zhun)规(gui)范需要时间(jian)段做好探测应力测试(shi), 不可随时得知(zhi)机(ji)器(qi🌃)问题,机(ji)器(qi)持(chi)久因(yin)病行驶,从而(er)造成变配(pei)电(dian)设(she)备电(dian)力变电(dian)器(qi)烧掉。

我们对客户低压线路、设备验收把关不严, 由于工程质量差, 导线每相弧垂相差太大, 大风造成低压短路，低压设备安装不规范等原因烧毁配电变压器。在综合配电变压器容量富裕度不足的情况下，接入临时基建、临时用电负荷的情况，造成过负荷烧毁配变。

送电(dian)(dian)(dian)所在(zai)位置变(bian)(bian)供(gong)(gong)电(dian)(dian)(dian)装置仪器督察不及时(shi)及督察内容不全时(shi)，导致变(bian)(bian)供(gong)(gong)电(dian)(dian)(dian)装置电(dian)(ꦡdian)(dian)压器长期的缺油电(dian)(dian)(dian)脑(nao)运(yun)行(xing), 压差大电(dian)(dian)(dian)缆(lan)线(xian)区(qu)域不完全,导致压差大电(dian)(dian)(dian)缆(lan)线(xian)过于频(pin)繁地(di)接地(di)线(xian)。变(bian)(bian)供(gong)(gong)电(dian)(dian)(dian)装置室、门、窗划(hua)伤不处(chu)理,🌺 大雨时(shi)变(bian)(bian)供(gong)(gong)电(dian)(dian)(dian)装置室漏(lou)电(dian)(dian)(dian)导致变(bian)(bian)供(gong)(gong)电(dian)(dian)(dian)装置柜断路自(zi)燃变(bian)(bian)供(gong)(gong)电(dian)(dian)(dian)装置电(dian)(dian)(dian)压器。

在配电变压器投运前, 严格安装高、低压熔体, 同时测试负荷情况，分析原因。严格按照《中低压配电网实用技术指导书》中相关规定执行，按负荷情况配置熔体, 但不得超过下列要求:
( 1) 容量在100 kV·A 以上的配电变压器, 配置1.5～2.0 倍额定电流的熔体;
( 2)容量在100 kV·A 以下的配电变压器, 配置2.0～3.0 倍额定电流的熔体;
( 3) 低压侧熔体应按额定电流稍大一点选择。

在(zai)耗电(dian)(dian)(dian)(dian)高点期即(ji)将(jiang)到来时, 用钳形瞬时电(dian)(dian)(dian)(dian)流(liu)(liu)值(zhi)表对(dui)每台供(gong)电(dian)(dian)(dian)(dian)系统(tong)(tong)设(she)备电(dian)(dian)(dian)(dian)力配(pei)电(dian)(dian)(dian)(dian)盘(🅘pan)配(pei)电(dian)(dian)(dian)(dian)变(bian)压器短路(lu)(lu)电(dian)(dian)(dian)(dian)流(liu)(liu)值(zhi)瞬时电(dian)(dian)(dian)(dian)流(liu)(liu)值(zhi)完成测(ce)试, 知道供(gong)电(dian)(dian)(dian)(dian)系统(tong)(tong)设(she)备电(dian)(dian)(dian)(dian)力配(pei)电(dian)(dian)(dian)(dian)盘(pan)配(pei)电(dian)(dian)(dian)(dian)变(bian)压器单相较为严(yan)重不动平(ping)衡正常(chang)(chang)运作(zuo)(zuo), 要(yao)适宜修(xiu)正短路(lu)(lu)电(dian)(dian)(dian)(dian)流(liu)(liu)值(zhi)。对(dui)於常(chang)(chang)年过短路(lu)(lu)电(dian)(dian)(dian)(dian)流(liu)(liu)值(zhi)正常(chang)(chang)运作(zuo)(zuo)的供(gong)电(dian)(dian)(dian)(dian)系统(tong)(tong)设(she)备电(dian)(dian)(dian)(dian)力配(pei)电(dian)(dian)(dian)(dian)盘(pan)配(pei)电(dian)(dian)(dian)(dian)变(bian)压器要(yao)即(ji)使完成增容(rong)。潜在(zai)客户路(lu)(lu)线图的架线, 要(yao)可以依照(zhao)有关的的技术细则(ze)标准(zhun)要(yao)求完成工(gong)(gong)程施(shi)工(gong)(gong)作(zuo)(zuo)业, 切(qie)实保障工(gong)(gong)程施(shi)工(gong)(gong)作(zuo)(zuo)业效率, 标准(zhun)履(lv)行职责工(gong)(gong)程施(shi)工(gong)(gong)预验办手续(xu)。

在(zai)(zai)一年的(de)雷阵雨时节悄然(ran)而至此前, 应该对整个(ge)的(de)安(an)装在(zai)(zai)变(bian)供配(pei)(pei)(pei)电(dian)(dian)电(dian)(dian)压(ya)器(qi)(qi)上的(de)避(bi)雷器(qi)(q🍃i)采取维(wei)护(hu)保(bao)养(yang)(yang)估测。死(si)期维(wei)护(hu)保(bao)养(yang)(yang)跨(kua)(kua)接(jie)能不优良, 跨(kua)(kua)接(jie)所需的(de)引线有哪些(xie)断(duan)股、脱焊(han)、脱落的(de)情况。用(yong)跨(kua)(kua)接(jie)阻(zu)值(zhi)估测仪(yi)维(wei)护(hu)保(bao)养(yang)(yang)估测跨(kua)(kua)接(jie)阻(zu)值(zhi): 配(pei)(pei)(pei)变(bian)使(shi)用(yong)量(liang)在(zai)(zai)100 kV·A 及上述(shu)者(zhe)，其跨(kua)(kua)接(jie)阻(zu)值(zhi)值(zhi)不允(yun)许以上4 Ω；配(pei)(pei)(pei)变(bian)使(shi)用(yong)量(liang)100 kV·A 以内者(zhe)，其跨(kua)(kua)接(jie)阻(zu)值(zhi)值(zhi)不允(yun)许以上10 Ω。按规范规范对变(bian)供配(pei)(pei)(pei)电(dian)(dian)电(dian)(dian)压(ya)器(qi)(qi)采取时间间隔(ge)性耐压(ya), 事先(xian)及早发(fa)觉没收违法所得(de)理(li)缺欠。

每(mei)台变(bian)电(dian)电(dian)力(li)变(bian)压器(qi)必须重新(xin)安(an)装(zhuang)特级剩(sheng)下的(de)交(jiao)流电(dian)动(dong)做(zuo)养护提升装(zhuang)置。在(zai)其投(tou)入运(yun)营前该做(zuo)有以下检查(cha)(cha)操作(zuo): ( 1) 带功率因(yin)数(shu)补偿分、合(he)触点开(kai)关3 次(ci), 不(bu)应(ying)误动(dong); ( 2) 用可靠(kao)(kao)性(xing)实验(yan)开(kai)关按钮可靠(kao)(kao)性(xing)实验(yan)3 次(ci), 应(ying)对(dui)动(dong)做(zuo);( 3) 各相用可靠(kao)(kao)性(xing)实验(yan)内阻接(jie)地装(zhuang)置可靠(kao)(kao)性(xing)实验(yan)3 次(ci), 应(ying)对(dui)动(dong)做(zuo)。在(zai)正常运(yun)作(zuo)中每(mei)个试(shi)跳(tiao)1 次(ci), 应(ying)对(dui)动(dong)做(zuo)。禁(jin)上(shang)对(dui)底压特级漏电(dian)养护器(qi)꧃脱离(li)正常运(yun)作(zuo)，若会出(chu)现(xian)(xian)空开(kai)跳(tiao)闸出(chu)现(xian)(xian)问(wen)题的(de)，应(ying)马上(shang)先巡查(cha)(cha)原由，正确处理出(chu)现(xian)(xian)问(wen)题的(de)，后供水。