380V电压用500比,5电流互感器怎样计算用电量 互感器电表如何计算度如500/5
\u4e09\u76f8\u56db\u7ebf\u529f\u7387\u8868\u914d500\u6bd45\u7535\u6d41\u4e92\u611f\u5668\uff0c\u5982\u4f55\u8ba1\u7b97\u7528\u7535\u91cf\u697c\u4e0a\u4e24\u4f4d\u4e25\u91cd\u8bef\u5bfc\u4e86\u5e7f\u5927\u6c11\u4f17\uff0c\u7535\u8868\u7684\u76f4\u663e\u5ea6\u6570\u786e\u5b9e\u4e0d\u662f\u5176\u7ebf\u8def\u771f\u5b9e\u7535\u91cf\uff0c\u9700\u8981\u628a\u5ea6\u6570\u4e58\u4e8e\u5176\u500d\u7387\u624d\u5f97\u771f\u6b63\u7535\u91cf\u5ea6\u6570\uff0c\u4f46\u662f\u4f60\u4eec\u8bef\u4ee5\u4e3a\u500d\u7387\u5c31\u662f\u7535\u80fd\u8868\u7684CT\u53d8\u6bd4\uff0c\u8fd9\u4e2a\u662f\u5f88\u7247\u9762\u7684\u3002\u5728\u5c45\u6c11\u7528\u7535\u4e2dCT\u53d8\u6bd4\u786e\u5b9e\u7b49\u4e8e\u500d\u7387\uff0c\u4f46\u662f\u5728\u9ad8\u538b\u7ebf\u8def\u4e2d\uff0810kV\u53ca\u5176\u4ee5\u4e0a\uff0c110kV\u3001220kV\u7b49\u7b49\uff0c\u6709\u65f6\u5c45\u6c11\u7528\u7535\u4e2d\u5c31\u6d89\u53ca\u6709\u5f88\u591a10kV\u7ebf\u8def\uff09\uff0c\u7535\u80fd\u8868\u7684\u500d\u7387\u7b49\u4e8ePT\uff08\u7535\u538b\u4e92\u611f\u5668\uff09\u53d8\u6bd4\u4e58\u4e8eCT\uff08\u7535\u6d41\u4e92\u611f\u5668\uff09\u53d8\u6bd4\uff0c\u6240\u4ee5\u5bf9\u4e8e\u697c\u4e3b\u7684\u95ee\u9898\uff0c\u5c31\u4e0d\u80fd\u7b80\u5355\u7684\u7528\u697c\u4e0a\u4e8c\u4f4d\u7684\u7b54\u6848\u6765\u56de\u7b54\u4e86\uff01\u5177\u4f53\u7684\u516c\u5f0f\u89c1\u4e0b\uff1a
\u5b9e\u9645\u7535\u91cf=\u500d\u7387*\u7535\u8868\u5ea6\u6570
\u5176\u4e2d\uff1a\u500d\u7387=PT\u53d8\u6bd4*CT\u53d8\u6bd4\uff08\u5c45\u6c11\u7528\u7535380V\u3001220V\u7535\u538b\u4e2d\u65e0PT\uff0c\u5176\u53d8\u6bd4\u53d61\uff09
\u5ea6\u6570\u76f4\u63a5\u8bfb\u51fa\u3002
\u6709\u529f\u7535\u5ea6=\u7535\u80fd\u8868\u8bfb\u6570\u5dee*\u7535\u538b\u4e92\u611f\u5668\u53d8\u6bd4*\u7535\u6d41\u4e92\u611f\u5668\u53d8\u6bd4\uff0c380v\u6ca1\u6709\u7535\u538b\u4e92\u611f\u5668\u7684\u8bdd\u76f4\u63a5*\u7535\u6d41\u4e92\u611f\u5668\u53d8\u6bd4\uff0c6kv\u4ee5\u4e0a\u90fd\u6709\u7535\u538b\u4e92\u611f\u5668\uff0c\u4e8c\u6b21\u7535\u538b\u4e3a100v\uff0c\u59826kv,500/5\u7535\u5ea6\u500d\u7387\u4e3a6/0.1*500/5=60000\uff0c\u7535\u8868\u8d70\u4e00\u5ea6\u5b9e\u9645\u7528\u753560000\u5ea6
电流比；500A/5A=100倍。实际耗电=电表读数x100。互感器100/5等于20也就是一度等于20度 500/5等于100电表一度就是100度电
绛旓細2. 瀵逛簬涓夌浉鐢佃矾锛岀數娴鐨勮绠楀叕寮忎负锛氱數娴 = 鍔熺巼 / 鐢靛帇 / 鐢靛帇鐩镐綅 / 璐熻浇鍔熺巼鍥犳暟銆3. 鍦ㄦ鍋囪璐熻浇涓虹數鍔ㄦ満銆佺嚎鍦堢瓑鎰熸ц礋杞斤紝鍔熺巼鍥犳暟澶х害涓0.8宸﹀彸锛堝疄闄呬笉鍚岃礋杞斤紝鍔熺巼鍥犳暟涓嶅悓锛夈4. 浠ｅ叆鍏紡璁＄畻锛氱數娴 = 500,000 / 380 / 1.732 / 0.8锛屽緱鍑虹數娴佺害涓950A宸﹀彸銆5. 鍩轰簬姝ょ數娴佸...
绛旓細姣忕浉閰200/5鐢垫祦浜掓劅鍣紝 閰5A鏅氱數琛 涔熷彲浠ラ厤姣忕浉200/5浜掓劅鍣ㄥ悗锛岀粺涓閰嶄竴鍧椾笁鐩5A鏅氱數琛 鍗曚綅鐢220V鐢靛帇 鍔熺巼涓87KW锛屽鏋滄槸鍗曠浉渚涚數锛屾瘡鐩哥數娴 I=P/Ucos桅=87000/220/0.8=494A 閰500/5鎴600/5鐢垫祦浜掓劅鍣, 閰嶄竴鍧5A鏅氱數琛 380V鐢靛帇 鍔熺巼涓25KW 棰濆畾鐢垫祦 I=P/1.732Ucos桅=...
绛旓細鐩歌礋杞介樆鎶楋細Zp=380/5=76惟 1銆佷笁瑙掑舰杩炴帴锛歅=鈭3ULILcos蠁(UL銆両L涓虹嚎鐢靛帇銆佺嚎鐢垫祦)鐩歌礋杞界數鍘嬩笉鍙橈紝涓夌浉璐熻浇P=3300W锛岀嚎鐢靛帇UL绛変簬鐩哥數鍘婾p绛変簬380V锛岀嚎鐢垫祦绛変簬锛欼L=鈭3Ip=8.66A (鎴栵細I=3300/(鈭3x380x0.58=8.64A)锛屽悎鐞嗚宸級2銆佹槦褰㈣繛鎺ワ紝绾鐢靛帇380V锛鐩哥數鍘380/鈭3=220V锛岀嚎...
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绛旓細1.732*380*5*鍔熺巼鍥犳暟*鏁堢巼锛岃繖鏄數鏈虹殑瀹為檯鍋氬姛鍔熺巼锛屼竴鑸1.8kw.鏈夊姛鍔熺巼鍜岃鍦ㄥ姛鐜囦箣鍜屼竴鑸敤鏉ヨ璁″伐鍘傜敤鐢佃礋鑽
绛旓細浣犲ソ锛氣斺斺槄1銆侀瀹鐢靛帇 380 V 鐨渚涚數绾胯矾锛岃閲忕數搴﹁〃浣跨敤鐢垫祦浜掓劅鍣紝瀹冪殑鍊嶇巼涓猴細銆愯鏍 3000 / 5 鐨勭數娴佷簰鎰熷櫒锛屽畠鐨勫嶇巼涓猴細3000 梅 5 锛 600锛堝嶏級銆戙傗斺斺槄2銆佽閲忕數搴﹁〃鐨勮鏁帮紝涔樹互鐢垫祦浜掓劅鍣ㄧ殑鍊嶇巼灏辨槸瀹為檯鐢ㄧ數閲忥細鐢靛害琛ㄨ蛋 1 涓瓧锛屽氨鏄 600 搴︾數銆
绛旓細kW鏄姛鐜嘝鐨勫崟浣嶏紝鏈夊姛鍔熺巼P=U*I*COS蠁锛岀敤澶氬ぇ鐢靛帇琛ㄤ富瑕佷笉鏄湅鍔熺巼锛岃屾槸鐪嬪叾棰濆畾鐢靛帇澶氬ぇ锛堥摥鐗屼笂浼氭湁锛夈傝嫢鏄櫘閫380V鐢垫満锛岀敤450V鐢靛帇琛ㄥ氨鍙互锛220kW銆380V鐢垫満鐢500A鐢垫祦琛紙閽冲舰琛ㄦ垨缁忕數娴佷簰鎰熷櫒锛夈傝嫢鏄10kV绛夐珮鍘嬬數鏈猴紝涓鑸鐢ㄧ數鍘嬩簰鎰熷櫒鍜岀浉搴旂殑鐢靛帇琛紙涓庝簰鎰熷櫒鍙樻瘮鏈夊叧锛屾牴鎹數鏈...
绛旓細浣犲ソ锛氣斺斺槄1銆佲滅數鏈鐢靛帇鏄380浼忥紝鐢垫祦鏄5瀹夆 锛岄偅涔堢數鍔ㄦ満鐨勮鍦ㄥ姛鐜囦负锛1.732 脳 380 V 脳 5 A 锛 3290.8 W 锛屽ぇ绾 3.3 KVA 銆傗斺斺槄2銆佺數鍔ㄦ満鐨勯瀹氬姛鐜囷紝涓鸿鍦ㄥ姛鐜 脳 鍔熺巼鍥犳暟 脳 鏁堢巼銆備互鍔熺巼鍥犳暟 0.8 銆佹晥鐜 0.8 璁＄畻锛岀數鏈虹殑棰濆畾鍔熺巼涓猴細3.3 KVA 脳 0.8 脳 0....
绛旓細灏辫兘澶熷緱鍑烘瘡涓鏍肩殑澶у皬浜嗐傛弧搴50鏍锛500V鎸℃槸鎸囬拡鍦38鏍煎乏鍙炽備竾鐢ㄨ〃鐨勫熀鏈伐浣滃師鐞嗘槸鍒╃敤涓鍙伒鏁忕殑纾佺數寮忕洿娴佺數娴佽〃锛堝井瀹夎〃锛夊仛琛ㄥご銆傚綋寰皬鐢垫祦閫氳繃琛ㄥご锛屽氨浼氭湁鐢垫祦鎸囩ず銆備絾琛ㄥご涓嶈兘閫氳繃澶鐢垫祦锛鎵浠ワ紝蹇呴』鍦ㄨ〃澶翠笂骞惰仈涓庝覆鑱斾竴浜涚數闃昏繘琛屽垎娴佹垨闄嶅帇锛屼粠鑰屾祴鍑虹數璺腑鐨勭數娴併鐢靛帇鍜岀數闃汇
绛旓細3銆500绫崇數缂嗙殑闀垮害瀵圭數鍘嬬殑褰卞搷锛氱粡鏌ワ紝3x185+95鐢电紗鐨勫浣撶洿娴佺數闃绘槸0.091惟/km銆傜數缂500绫筹紝鍦ㄦ甯搁瀹鐢垫祦涓嬬殑鍘嬮檷 = 0.091惟/km x 0.5km x 280A =12.7V 12.7V鏄380V鐨3.4%锛屽湪鍏佽鑼冨洿涔嬪唴銆傜數鏈鸿緭鍏ョ鐢靛帇绾︿负380V-12.7V=367.3V 4銆佺粨璁猴細380V鐨勭數鍘嬶紝鐢电嚎闀500绫筹紝瑕佸甫鍔...
