配電柜與電容柜基本(ben)常識(shi)你清(qing)楚嗎？

一，常見的基(ji)本配電(dian)柜常識問題。

1，“電(dian)容補償(chang)",PT柜(ju),帶(dai)電(dian)指(zhi)示器,都有什(shen)么作用?它們的(de)各自(zi)目的(de)是什(shen)么?配電(dian)柜(ju)廠(chang)家為你解答。

電容(rong)補償得作用(yong)就是降低（reduce)無功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)(指物體在(zai)單位時間內(nei)所(suo)做的(de)功(gong)(gong)(gong)(gong)的(de)多少)，提高功(gong)(gong)(gong)(gong)率(lv)(high power)因(yin)數。（在(zai)上次(ci)您的(de)問題“有功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)=視在(zai)功(gong)(gong)(gong)(gong)率(lv)"cos"中的(de)"cos"什么意思?它的(de)中文叫(jiao)什么? ”就提到(dao)“有功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)”“無功(gong)(gong)(gong)(gong)功(gong)(gong)(gong)(gong)率(lv)”“視在(zai)功(gong)(gong)(gong)(gong)率(lv)”），因(yin)為我們的(de)用(yong)電設(she)備(equipment)大多數都是電感型的(de)，所(suo)以要用(yong)電容(rong)來補償。

PT柜

PT就是(shi)電(dian)壓(ya)互感(gan)器(qi)，PT柜里裝(zhuang)有PT和(he)避雷器(qi)，PT是(shi)把(ba)母(mu)線上的(de)(de)高電(dian)壓(ya)轉換成100V的(de)(de)電(dian)壓(ya)，測量(liang)元件(jian)（用(yong)來(lai)測量(liang)母(mu)線的(de)(de)電(dian)壓(ya)和(he)作(zuo)為各個支路的(de)(de)功率(指物(wu)體在單位時間(jian)內(nei)所做的(de)(de)功的(de)(de)多少)表、電(dian)能表等的(de)(de)電(dian)壓(ya)輸入量(liang)）和(he)繼電(dian)保(bao)(bao)護元件(jian)（電(dian)壓(ya)型保(bao)(bao)護和(he)帶(dai)方(fang)向(xiang)保(bao)(bao)護）的(de)(de)輸入量(liang)。 帶(dai)電(dian)指示器(qi)

帶(dai)電(dian)指示(shi)器是用來視設備(equipment)是否帶(dai)電(dian)的電(dian)器元件(jian)，它的作用和試(shi)電(dian)筆(bi)相似。

2，為什(shen)么補(bu)償(chang)電容器組禁止帶電荷(electric charge)合(he)閘（zhá)?

在交(jiao)流電(dian)(dian)(dian)(dian)路中(zhong)，如果(guo)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器帶有電(dian)(dian)(dian)(dian)荷(he)(electric charge)時再(zai)次(ci)合閘（zhá)，則可能（maybe)使電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器承受兩倍以上額定電(dian)(dian)(dian)(dian)壓的峰值(peak)，這對電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器是有害的。同(tong)時，也會造成(cheng)很大的沖擊電(dian)(dian)(dian)(dian)，有時使熔絲熔斷(duan)(duan)或斷(duan)(duan)路器(circuit-breaker)跳閘。因此，電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器組(zu)每次(ci)拉閘之后(hou)(hou)，必須(xu)隨(sui)即進(jin)(jin)行(xing)放電(dian)(dian)(dian)(dian)，待電(dian)(dian)(dian)(dian)荷(he)消(xiao)失后(hou)(hou)再(zai)行(xing)合閘。從理論上講，電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器的放電(dian)(dian)(dian)(dian)要無窮(qiong)大時才能放完，但實際上只(zhi)要放電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)阻選(xuan)得(de)合適，那么1rain左右即可滿足要求。所以運行(xing)規(gui)程中(zhong)規(gui)定：電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器組(zu)每次(ci)重新合閘，必須(xu)在電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)器組(zu)斷(duan)(duan)開3min后(hou)(hou)進(jin)(jin)行(xing)，以利安全。

電容柜工(gong)作(zuo)原理(li)(principle)：

用(yong)電(dian)(dian)設備(equipment)除電(dian)(dian)阻性(xing)負(fu)(fu)載外，大部分(fen)用(yong)電(dian)(dian)設備(equipment)均屬感性(xing)用(yong)電(dian)(dian)負(fu)(fu)載（如日光(guang)燈、變壓(ya)（氣壓(ya)變量(liang))器、馬(ma)達(motor)等用(yong)電(dian)(dian)設備(equipment)）這些感應負(fu)(fu)載，使(shi)供(gong)(gong)電(dian)(dian)電(dian)(dian)源電(dian)(dian)壓(ya)相(xiang)位發生改變（即電(dian)(dian)流(liu)(liu)(Electron flow)滯后于電(dian)(dian)壓(ya)），因此電(dian)(dian)壓(ya)波(bo)動大，無功功率(lv)(指物(wu)體在單(dan)位時(shi)間內(nei)(nei)所(suo)做的(de)功的(de)多少)增(zeng)大，浪費大量(liang)電(dian)(dian)能。當功率(lv)因數過低時(shi)，以致供(gong)(gong)電(dian)(dian)電(dian)(dian)源輸出電(dian)(dian)流(liu)(liu)過大而出現超負(fu)(fu)載現象。電(dian)(dian)容補(bu)償柜內(nei)(nei)的(de)電(dian)(dian)腦電(dian)(dian)容控制（control)系統可解決以上弊端(duan)，它可根據用(yong)電(dian)(dian)負(fu)(fu)荷的(de)變化，而自(zi)動設置。電(dian)(dian)容組數的(de)投(tou)入，進行電(dian)(dian)流(liu)(liu)補(bu)償，從而減低大量(liang)無功電(dian)(dian)流(liu)(liu)，使(shi)線(xian)路電(dian)(dian)能損耗降到程度(du)，提供(gong)(gong)一個高(gao)素質(zhi)的(de)電(dian)(dian)力源。