变压器为35KV容量为2000KVA,额定功率是多少?二次侧电压为400V电流显示为1500A,变 变压器35KV的,额定容量为2000KVA,现在显示电流为1...
\u53d8\u538b\u5668\u4e3a35KV\u5bb9\u91cf\u4e3a2000KVA\uff0c\u989d\u5b9a\u529f\u7387\u662f\u591a\u5c11\uff1f\u4e8c\u6b21\u4fa7\u7535\u538b\u4e3a400V\u7535\u6d41\u663e\u793a\u4e3a1500A\uff0c\u53d8\u89c6\u5728\u529f\u7387\u4e3a2000kvA\u53d8\u538b\u5668\u4e8c\u6b21\u4fa7\u989d\u5b9a\u7535\u6d41I2=S/1.732U2=2000/1.732x400=2887A
\u5f53\u529f\u7387\u56e0\u6570\u4e3a0.95\u65f6\uff0c\u53d8\u538b\u5668\u7684\u989d\u5b9a\u529f\u7387P=Scos\u222e=2000x0.95=1900kw
\u4e8c\u6b21\u7535\u6d41\u4e3a1500A\u65f6\uff0c\u5360\u53d8\u538b\u5668\u5bb9\u91cf\u6bd4\u4f8b=1500/2887=52%
\u529f\u7387\u56e0\u65700.95\u7684\u53d8\u538b\u5668\u989d\u5b9a\u5bb9\u91cfP=2000\u00d70.95=1900KW\u3002
\u73b0\u5728\u7528\u4e86\u7684\u5bb9\u91cfP=\u221a3\u00d70.4\u00d71500\u00d70.95=987.24KW
当功率因数为0.95时,变压器的额定功率P=Scos∮=2000x0.95=1900kw
二次电流为1500A时,占变压器容量比例=1500/2887=52%
绛旓細瑙嗗湪鍔熺巼涓2000kvA鍙樺帇鍣浜屾渚ч瀹氱數娴両2=S/1.732U2=2000/1.732x400=2887A 褰撳姛鐜囧洜鏁颁负0.95鏃讹紝鍙樺帇鍣ㄧ殑棰濆畾鍔熺巼P=Scos鈭=2000x0.95=1900kw 浜屾鐢垫祦涓1500A鏃讹紝鍗鍙樺帇鍣ㄥ閲姣斾緥=1500/2887=52
绛旓細鍔熺巼鍥犳暟0.95鐨鍙樺帇鍣棰濆畾瀹归噺P=2000脳0.95=1900KW銆傜幇鍦ㄧ敤浜嗙殑瀹归噺P=鈭3脳0.4脳1500脳0.95=987.24KW
绛旓細鍙樺帇鍣 瀹归噺 涓2000kva锛岃繍琛屽湪2000KV/35KV鐨勭郴缁熶腑锛屽垯鐢垫祦鏄細鍏紡鏄細P=鈭3锛堟牴鍙凤級U I 2000/1.732*35=32.99 杩欎釜鏄 浣庡帇 渚 楂樺帇渚т篃涓鏍 2000/1.732*2000KV =0.58
绛旓細鍙樺帇鍣ㄥ閲忎负2000kva锛岃繍琛屽湪2000KV/35KV鐨勭郴缁熶腑锛屽垯鐢垫祦鏄細鍏紡鏄細P=鈭3锛堟牴鍙凤級U I 2000/1.732*35=32.99 杩欎釜鏄綆鍘嬩晶 楂樺帇渚т篃涓鏍 2000/1.732*2000KV =0.58
绛旓細鐩稿綋浜庤冭檻鍙樺帇鍣鐨勫唴閮ㄥ帇闄嶅拰鏁堢巼锛夈侾=Scos蠁脳380/400=2000脳0.85脳380/400=1615kW銆傝繖鏄寚瀹為檯鐨勬湁鍔熻礋鑽凤紝鑰屼笉鏄寚鎵鎺ョ殑璁惧瀹归噺涔嬪拰锛堢敱浜庝笉鏄兘婊¤礋鑽蜂笌鍚屾椂宸ヤ綔锛屽彲浠ユ帴鐨勮澶囪澶у緱澶氾級銆傚鏋滀緵鐢电數鍘嬫湁淇濋殰锛屽苟涓旀棤鍔熻ˉ鍋垮緱濂斤紝鍔熺巼鍥犳暟鎻愬緱楂橈紝褰撶劧灏卞彲浠ュ甫鏇村鐨勮礋鑽蜂簡銆
绛旓細鍥犱负璐熻浇鎹熻楃殑澶ч儴鍒嗘槸绾垮湀鐨勭數闃绘崯鑰椼傛墍浠ヤ綘鎯宠鐨勬暟鎹槸鍦ㄤ竴涓钩鍧囪礋杞界巼涓鍙樺帇鍣鐨勮礋杞芥崯鑰*璐熻浇鏃堕棿銆3銆佷綘鎻愪緵鐨勪袱涓弬鏁35kV銆2000kVA杩樹笉瓒充互鐣屽畾杩欏彴鍙樺帇鍣紝鍦ㄥ浗鏍嘒B/T 6451-2008閲屽弻缁曠粍鏃犲ぇ鍔辩璋冨帇鐨勮礋杞芥崯鑰楁爣鍊兼槸19.35kW,鏈夎浇璋冨帇鐨勪负20.25kW.4銆佸師鐞嗗拰姒傚康宸茬粰浣犺浜嗭紝鍏跺畠鐨勪綘...
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绛旓細鎸夎绋嬶紝涓嶇鍙樺帇鍣涓娆$數娴佸澶э紝浣庡帇渚т腑鎬х偣鐨凜T閮藉彇100A銆
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绛旓細濡傛灉鎸囩殑鏄姛鐜囦袱鍗冪摝锛屽垵绾х數鍘嬫槸鍥涚櫨浼忥紝鎶婂洓鐧句紡鍗囧埌涓変竾浜斿崈浼忋傛牴鎹姛鐜囦箻浠ョ數鍘嬬瓑浜庣數娴佺殑瀹氬緥鍏紡璁$畻锛2000/400=5锛夛紝鎸夋棤鎹熻楄绠楋紝杈撳叆鐢垫祦鏄簲瀹夈傦紙400/3500=0.1143锛変笁鍗佷簲鍗冧紡鐨勭數娴佹槸闆剁偣涓涓鍥涗笁瀹夈傦紙114.3mA锛夈