廈(sha)門(men)重(zhong)力通(tong)機(ji)電設(she)備有限公(gong)司取得防(fang)爆電機(ji)安(an)裝(zhuang)、修(xiu)理資格證書，高壓(ya)電機(ji)維修(xiu)廠(chang)，承接國內、外大中型交流(liu)、直流(liu)、高低(di)壓(ya)電機(ji)，承接現場(chang)振(zhen)動(dong)檢測，動(dong)平衡校正；現場(chang)機(ji)電設(she)備安(an)裝(zhuang)調試、維護、修(xiu)理、施工；橡(xiang)塑類(lei)(lei)開煉機(ji)輥筒表面、軸承位修(xiu)復，液壓(ya)缸修(xiu)復，以及(ji)各類(lei)(lei)芯軸修(xiu)復。提(ti)供FAG軸承，動(dong)、靜密封(feng)，電機(ji)配件等機(ji)電產品(pin)。

電(dian)機(ji)(英文(wen)：Electric machinery，俗稱(cheng)“馬達”)是(shi)指(zhi)依據電(dian)磁(ci)感應(ying)定(ding)(ding)律實(shi)現(xian)電(dian)能轉(zhuan)(zhuan)換或傳遞的(de)一種(zhong)電(dian)磁(ci)裝置。它主要是(shi)利用通電(dian)線圈(也(ye)(ye)就(jiu)是(shi)定(ding)(ding)子(zi)繞組)產生旋(xuan)轉(zhuan)(zhuan)磁(ci)場并作(zuo)用于轉(zhuan)(zhuan)子(zi)(如(ru)鼠籠式閉合鋁(lv)框)形成磁(ci)電(dian)動力旋(xuan)轉(zhuan)(zhuan)扭矩。發(fa)電(dian)機(ji)在電(dian)路中用字母G表(biao)示。變壓器，在有(you)的(de)書上稱(cheng)之(zhi)為(wei)靜止(zhi)的(de)電(dian)機(ji)。從電(dian)機(ji)的(de)定(ding)(ding)義發(fa)現(xian)，這(zhe)么(me)說也(ye)(ye)有(you)它的(de)道理的(de)。

廈(sha)門重(zhong)力通機(ji)電(dian)(dian)(dian)設備(bei)(bei)有限公司取得(de)防爆(bao)電(dian)(dian)(dian)機(ji)安(an)裝(zhuang)、修理資格證書，承(cheng)接國(guo)內、外(wai)大中型交流(liu)、直流(liu)、高低壓電(dian)(dian)(dian)機(ji)，承(cheng)接現場(chang)振(zhen)動(dong)(dong)檢測，動(dong)(dong)平衡(heng)校(xiao)正(zheng)；現場(chang)機(ji)電(dian)(dian)(dian)設備(bei)(bei)安(an)裝(zhuang)調試(shi)、維護(hu)、修理、施工；橡塑類開煉(lian)機(ji)輥筒(tong)表面(mian)、軸(zhou)(zhou)承(cheng)位修復(fu)，液壓缸修復(fu)，以及(ji)各類芯軸(zhou)(zhou)修復(fu)。提(ti)供FAG軸(zhou)(zhou)承(cheng)，動(dong)(dong)、靜密封，高壓電(dian)(dian)(dian)機(ji)，電(dian)(dian)(dian)機(ji)配件等(deng)機(ji)電(dian)(dian)(dian)產品。

為(wei)什么在標準環境(jing)下，電動車(che)的騎行電流會(hui)因電機的額定不同(tong)而(er)不同(tong)？

答：眾所周知，標準(zhun)條件下(xia)，以額(e)(e)定負(fu)(fu)載 160W 來(lai)計算，在 250W 的(de)直流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)上(shang)騎(qi)行電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)為(wei) 4 — 5A 左(zuo)右，而在 350W 直流(liu)(liu)(liu)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)上(shang)騎(qi)行電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)略(lve)高(gao)一些。舉個(ge)例子：如果電(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)壓為(wei) 48V ，兩個(ge)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji) 250W 和 350W ，其(qi)額(e)(e)定效(xiao)(xiao)率點都為(wei) 80% ，則 250W 電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)額(e)(e)定工(gong)(gong)作電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)為(wei) 6.5A 左(zuo)右，而 350W 電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)額(e)(e)定工(gong)(gong)作電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)為(wei) 9A 左(zuo)右。而一般電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)效(xiao)(xiao)率點是工(gong)(gong)作電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)偏(pian)離額(e)(e)定工(gong)(gong)作電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)越遠，其(qi)值越小，同在 4 — 5A 的(de)負(fu)(fu)載情況(kuang)下(xia)，在 250W 的(de)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)效(xiao)(xiao)率為(wei) 70% ， 350W 的(de)電(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)效(xiao)(xiao)率為(wei) 60% ，則在 5A 的(de)負(fu)(fu)載下(xia)，

250W 的(de)輸出功率為(wei) 48V*5A*70%=168W

350W 的輸(shu)出功率為 48V*5A*60%=144W

而 350W 電(dian)機為了使輸(shu)出功率(lv)滿足騎行要求(qiu)即達到 168W （差(cha)不(bu)多(duo)是額定負載），則只(zhi)有使電(dian)源增加(jia)，從而使效率(lv)點。

廈門重力通機(ji)電(dian)(dian)(dian)設備(bei)有限(xian)公司取得防爆電(dian)(dian)(dian)機(ji)安裝、修理資格證書，承(cheng)(cheng)接國內、外大中型交流(liu)、直(zhi)流(liu)、高低壓電(dian)(dian)(dian)機(ji)，承(cheng)(cheng)接現(xian)場振動(dong)檢(jian)測，動(dong)平(ping)衡(heng)校正；現(xian)場機(ji)電(dian)(dian)(dian)設備(bei)安裝調試、維護(hu)、修理、施工；橡塑(su)類(lei)開(kai)煉機(ji)輥筒表面(mian)、軸承(cheng)(cheng)位(wei)修復(fu)，液壓缸修復(fu)，以(yi)及(ji)各類(lei)芯軸修復(fu)。提(ti)供FAG軸承(cheng)(cheng)，動(dong)、靜密封，電(dian)(dian)(dian)機(ji)配件等機(ji)電(dian)(dian)(dian)產品。

有(you)些電(dian)(dian)機(ji)(ji)在潮氣環(huan)境(jing)中(zhong)閑置(zhi)，高壓(ya)電(dian)(dian)機(ji)(ji)保養(yang)，周(zhou)圍的(de)潮氣會使(shi)(shi)(shi)電(dian)(dian)機(ji)(ji)鐵心和繞(rao)組絕(jue)緣表面受(shou)潮，凝結成水霧，使(shi)(shi)(shi)電(dian)(dian)機(ji)(ji)絕(jue)緣電(dian)(dian)阻(zu)降(jiang)低。再次使(shi)(shi)(shi)用時有(you)可能(neng)絕(jue)緣被擊穿。因此，要求短(duan)期閑置(zhi)的(de)電(dian)(dian)機(ji)(ji)要通入電(dian)(dian)流，靠(kao)銅耗辦(ban)法加熱繞(rao)組，使(shi)(shi)(shi)電(dian)(dian)機(ji)(ji)鐵心和繞(rao)組溫度比(bi)環(huan)境(jing)溫度高出(chu)5℃以上，繞(rao)組絕(jue)緣就不(bu)會受(shou)潮。一般選(xuan)用5%~10%左(zuo)右的(de)額定電(dian)(dian)壓(ya)，小(xiao)電(dian)(dian)機(ji)(ji)選(xuan)用30V左(zuo)右電(dian)(dian)壓(ya)即(ji)可。國外電(dian)(dian)機(ji)(ji)有(you)自帶加熱裝置(zhi)，可以靠(kao)這個裝置(zhi)加熱電(dian)(dian)機(ji)(ji)。