10KV变380的800KVA的变压器线路中，断路器整定值75/5是什么意思？具体说明一下！ 主变压器选择的原则 具体说说 谢谢！
LZJC-10 75/5\u4e2d\u768475/5\u662f\u4ec0\u4e48\u610f\u601d\uff0c75\u662f\u600e\u4e48\u7b97\u51fa\u6765\u7684\uff1f800\u7684\u53d8\u538b\u566875/5\u6307\u7684\u662f\u5f53\u4e00\u6b21\u7535\u6d4175A\u65f6\uff0c\u4e8c\u6b21\u7535\u6d41\u4e3a5A(\u5141\u8bb8\u7684\u6700\u5927\u5de5\u4f5c\u7535\u6d41)\u3002800kVA\u7684\u53d8\u538b\u5668(10kv/0.4kV)\uff0c\u9ad8\u538b\u4fa7\u989d\u5b9a\u7535\u6d41\u7ea6\u4e3a46A\uff0c\u53ef\u4ee5\u900975/5\u7684CT
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2\u3001\u53ef\u71c3\u6cb9\u6d78\u5f0f\u7535\u529b\u53d8\u538b\u5668\u5e94\u5b89\u88c5\u5728\u5355\u72ec\u7684\u5c0f\u623f\u95f4\u5185\u3002\u53d8\u538b\u5668\u9ad8\u538b\u4fa7\u95f4\u9694\u4e24\u4fa7\u5e94\u5b89\u88c5\u6d3b\u52a8\u62a4\u680f\u3002
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4\u3001\u6709\u4e0b\u5217\u60c5\u51b5\u65f6\uff0c\u53ef\u8bbe\u4e13\u7528\u53d8\u538b\u5668\uff1a\u5f53\u7528\u666e\u901a\u53d8\u538b\u5668\u4f5c\u52a8\u529b\u548c\u7167\u660e\u65f6\uff0c\u4e25\u91cd\u5f71\u54cd\u7167\u660e\u8d28\u91cf\u548c\u706f\u6ce1\u5bff\u547d\u65f6\uff0c\u53ef\u8bbe\u4e13\u7528\u53d8\u538b\u5668\u3002\u5f53\u5b63\u8282\u6027\u8d1f\u8377\u5bb9\u91cf\u8f83\u5927\u65f6\uff08\u5982\u5927\u578b\u6c11\u7528\u5efa\u7b51\u7a7a\u8c03\u51b7\u6c34\u673a\u7ec4\u7684\u8d1f\u8377\uff09\uff0c\u53ef\u8bbe\u7f6e\u4e13\u7528\u53d8\u538b\u5668\u3002
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你说的到底是互感器变比还是整定值，如果是整定值：那么5A是额定值，75A是速断值
变压器额定电流=800/10/1.732=47A，取1.5倍系数=47*15=70A。因此断路器整定值取75/5
绛旓細鏂矾鍣ㄦ暣瀹氬75/5鏄數娴佷簰鎰熷櫒鐨勬瘮鍊硷紝灏辨槸15鍊嶏紝800KVA/10KV鐨勪竴娆＄數娴佺害50A锛岄偅涔堢敤鐨勭數娴佷簰鎰熷櫒灏辨槸75/5銆傜敤姝ゅ兼潵瀹氭柇璺櫒瀹氬笺
绛旓細800KVA鏄彉鍘嬪櫒鐨勬婚瀹氬姛鐜囷紙瑙嗗湪鍔熺巼锛夛紝 鏍规嵁璐熻浇鐨勭數娴佹儏鍐碉紝鑰冭檻鍙樺帇鍣ㄧ殑鏁堢巼闂锛岃绮剧‘鐨勮瘽鍙互鏌ュ彉鍘嬪櫒鐨勬晥鐜囧弬鏁帮紝涔熷彲浠ュぇ姒傛寜70%绋嶅井淇濆畧浼扮畻涓涓嬨傞偅涔堝疄闄呬簩娆′晶鐨勬晥鐜囧簲璇ユ槸800*0.7=560KVA锛岃繖涓兼槸鍙樺帇鍣ㄧ殑瑙嗗湪鍔熺巼锛屽洜涓轰綘鐢ㄧ殑閮芥槸闃绘ц礋杞斤紝鎵浠ユ秷鑰楃殑鏄湁鍔熷姛鐜囷紝p=560*0.8锛堝姛...
绛旓細涓鍙800kva,10kv鐨骞插紡鍙樺帇鍣ㄤ綆鍘380V棰濆畾鐢垫祦锛1155A 鑳藉甫鍔ㄨ礋鑽风害锛歅=0.38*1155*0.8=351KW 璐熻嵎鐜0.82 锛屽畠姣忓ぉ鐨勭敤鐢甸噺绾︼細W=351*0.82*8=2302搴
绛旓細楂樺帇渚х殑瀵肩嚎鑻ヤ笉鑰冭檻鏈烘寮哄害鍙婄煭璺愬彈寮哄害鐨勮瘽锛10骞虫柟姣背鐨勫绾垮凡瓒冲銆
绛旓細1銆佹寜鐢靛帇鍒1000KV銆750KV銆500KV銆330KV銆220KV銆110KV銆66KV銆35KV銆20KV銆10KV銆6KV銆2銆佹寜璁捐鑺傝兘搴忓垪鍒哠J銆丼7銆丼9銆丼11銆丼13銆丼15銆3銆佹寜瀹归噺鏉ュ垎锛50KVA銆80KVA銆100KVA銆125KVA銆160KVA銆200KVA銆250KVA銆315KVA锛400KVA銆500KVA銆630KVA銆800KVA銆1000KVA銆1250KVA銆1600KVA銆2000KVA銆...
绛旓細瀹為檯涓婂彉鍘嬪櫒鐢电杈愬皠瀵逛汉浣撶殑褰卞搷鐜板湪杩樻槸涓涓瘮杈冨墠娌跨殑璇鹃锛屽簲涓虹洰鍓嶆潵璇磋繕娌℃湁杩欐柟闈㈢殑涓浜涚瀛︿緷鎹強瀹炰緥銆備笉杩囷紝浣犳槸涓嶅繀杩囦簬褰撳績鐨勶紝骞冲父50000KVA鐨110kV鍙鐢电珯涓绘帶瀹ょ鍙樺帇鍣ㄨ窛绂讳篃鏄浉褰撶殑杩戯紝鑰屽肩彮浜哄憳涓鑸篃鏄暱鏈熷浜庤繖鏍风殑涓涓幆澧冿紝涔熸病鏈夎繖鏂归潰鐨勫嵄瀹虫姤鍛娿800kVA搴旇鏉ヨ鏄皬閰嶅彉浜嗭紝褰...
绛旓細涓銆佸叕寮忓師鐞嗭細800KVA鐨勯厤鐢靛彉鍘嬪櫒锛屼竴鑸珮鍘嬩晶鏄10KV锛屼綆鍘嬩晶鏄0.4KV銆傚彉鍘嬪櫒鐨勯瀹氱數娴侊紳瀹归噺/锛堟牴鍙3 *棰濆畾鐢靛帇锛800KVA锛岄珮鍘嬩晶棰濆畾鐢垫祦锛46.2A銆備綆鍘嬩晶锛1152A銆備簩銆佽绠楄繃绋嬶細涓夌浉浜ゆ祦鐢电殑璁＄畻鍏紡锛欼=P/1.73脳380脳Cos蠁 锛圕os蠁--鍔熺巼鍥犳暟涓鑸彇0.85锛=800000梅558.79=1432A銆
绛旓細鐮旂┒鏁版嵁琛ㄦ樉绀猴紝800kVA鍙樺帇鍣ㄧ殑绌鸿浇鐢垫祦涓0.7A锛岀瓑鏁堢數闃讳负1.2惟/kVA锛390V鐢靛帇瀵瑰簲10000V鐢靛帇鐨勫彉姣斾负0.0385銆傚洜姝わ紝P0 = 鈭3 脳 0.7² 脳 1.2 脳 800 脳 0.0385 = 1064.4W锛屽彉鍘嬪櫒鐨勫緟鏈虹數鎹熻椾负1064.4鐡︺傞渶瑕佹敞鎰忕殑鏄紝璇ユ暟鍊间粎涓虹悊璁鸿绠楀硷紝瀹為檯鍊煎彲鑳戒細鍥犱负娓╁害銆佹补閲忋...
绛旓細鏍规嵁銆婄數鍔涘伐绋嬭璁℃墜鍐屻嬶紝鍙樺帇鍣ㄥ閲忥紝瀵逛簬骞崇ǔ璐熻嵎渚涚數鐨勫崟鍙板彉鍘嬪櫒锛岃礋鑽风巼涓鑸彇85%宸﹀彸锛屾晠鍙樺帇鍣ㄥ閲=640*85%=544KW锛岀數娴=544000/380/1.732=826.5A銆傞珮鍘嬩晶棰濆畾鐢垫祦涓46.2A锛屼綆鍘嬩晶棰濆畾鐢垫祦涓1152A銆800kva鐨鍙樺帇鍣ㄩ瀹氱數娴佷竴娆★紙10KV)=800*0.058=绾46A锛屼簩娆★紙400V)=800*1.45=绾1160A...
绛旓細10KV/0.4KV锛800KVA鍙樺帇鍣ㄤ竴娆′晶棰濆畾鐢垫祦锛欼1=800/锛1.732*10锛=46A 浜屾渚ч瀹氱數娴侊細I2=800/锛1.732*0.4锛=1155A
