MZVLF-80KV瓒呬綆闋婚浕绾滆€愬瑭﹂瑁濈疆
- 鐧�(f膩)甯冩檪闁擄細2024-09-03
- 瑷晱娆℃暩(sh霉)锛�1303
- 鐢熺敘(ch菐n)鍦板潃锛�涓婃捣瀵跺北
- 寤犲晢鎬ц唱(zh矛)锛�鐢熺敘(ch菐n)寤犲
MZVLF-80KV瓒呬綆闋婚浕绾滆€愬瑭﹂瑁濈疆绲�(ji茅)鍚堢従(xi脿n)浠f暩(sh霉)瀛楄畩闋诲厛閫�(j矛n)鎶€琛�(sh霉)锛岄噰鐢ㄥ井姗�(j墨)鎺у埗锛屽崌澹�銆侀檷澹�銆佹脯閲�銆佷繚璀�(h霉)*鑷嫊鍖�銆傜敱浜庡叏闆诲瓙鍖�锛屾墍浠ョ敘(ch菐n)鍝佸叿鍌欓珨绌嶅皬閲嶉噺杓�銆佸ぇ灞忓箷娑叉櫠椤ず锛屾竻鏅扮洿瑙€銆佷笖鑳介’绀鸿几鍑烘尝褰€€佹墦鍗拌│椹楀牨鍛婄壒寰�銆�

MZVLF-80KV瓒呬綆闋婚浕绾滆€愬瑭﹂瑁濈疆浣� 鐢� 鐗� 鍒� 瑾� 鏄�
瑭﹂瀹ゆ瀹氭檪锛屽彲浠ヤ娇鐢ㄧ洿娴佸垎澹撳櫒锛岀敱浜庣洿娴佸垎澹撳櫒閲囨ǎ閫熷害杓冩參锛屼笉鑳�*鍙嶆槧姣忓€嬪懆鏈熺殑瓒呬綆闋婚浕澹撴儏娉侊紝闇€瑕佺湅鍗佸€嬪懆鏈熶互涓�锛屽彇鍗佸€嬪懆鏈熶腑姝h矤(f霉)闆诲鐨勫ぇ鍊间綔鐐洪浕澹撶殑宄板€�锛岄€欏€嬪嘲鍊兼墠鏄闅涜几鍑虹殑闆诲鍊�
MZVLF-80KV瓒呬綆闋婚浕绾滆€愬瑭﹂瑁濈疆
涓€銆侀枊姗�(j墨)鍓嶄竴瀹氱敤鏀鹃浕妫掑皣瑭﹀搧鍏呭垎鏀鹃浕(鏀鹃浕妫掍娇鐢ㄦ柟娉曠偤锛氬厛鐢ㄩ檺娴佹斁闆荤
鏀鹃浕锛屽啀鐢ㄦ帴鍦扮鏀鹃浕)銆傞厤鍏╁€嬪崌澹撳櫒鐨勮秴浣庨牷鎺ョ窔鏂规硶锛氱暥(d膩ng)鍠崹(d煤)浣跨敤鍗�
澹撳櫒I鏅�(瑭﹂闆诲≤30KV)锛屽剙鍣ㄦ帶鍒惰几鍑篒鍕�(w霉)蹇呮帴鍒板崌澹撳櫒I锛屾帶鍒惰几鍑�
II涓嶉€f帴銆傜暥(d膩ng)鍗囧鍣↖鑸囧崌澹撳櫒II涓茶伅(li谩n)浣跨敤鏅�(瑭﹂闆诲≤80KV)锛屽剙鍣ㄦ帶
鍒惰几鍑篒鍕�(w霉)蹇呮帴鍒板崌澹撳櫒I锛屾帶鍒惰几鍑篒I鍕�(w霉)蹇呮帴鍒板崌澹撳櫒II锛屼笉鑳芥帴
鍙嶏紒鍚﹀墖鏈冩悕澹炲剙鍣ㄦ垨鑰呰│鍝�銆�
浜�銆侀枊姗�(j墨)鍗囧鍚�锛屽闇€瑕佷腑鏂疯珛涓嶈闂�(gu膩n)闁夐浕婧愰枊闂�(gu膩n)锛岃珛鍕�(w霉)蹇呬娇鐢ㄥ仠姗�(j墨)閸�锛岀敤鏀鹃浕
妫掑皣瑭﹀搧鍏呭垎鏀鹃浕鍚庡啀闂�(gu膩n)闁夐浕婧愩€傚惁鍓囦竴瀹氭渻鎼嶅鍎€鍣�?銆�?锛�
涓�銆佽珛鍕�(w霉)蹇呭毚(y谩n)鏍兼寜鐓у睆骞曟彁绀烘搷浣滐紝瑭﹂鏅傝珛灏囬珮澹撶窔鎺ラ牠鏃嬬穵銆佹帴瑙稿ソ銆�
鍥�銆佺敱浜庡崌澹撳櫒鍏�(n猫i)绲曠罚娌瑰凡瑁濇豢锛屽崌澹撳悗鍙兘鏈夊皯閲忔补婧㈠嚭锛屾槸姝e父鐝�(xi脿n)璞�锛屼笉褰�
闊夸娇鐢�銆�
浜�銆�10KV闆荤簻瑭﹂鏅�锛屾噳(y墨ng)鍠浉瑭﹂锛岄浕澹撹ō(sh猫)瀹氱偤18KV锛岄牷鐜囪ō(sh猫)瀹氱偤0.1Hz(鎺ㄨ枽
浣跨敤)銆�0.05Hz(鎺ㄨ枽浣跨敤)銆�0.02Hz(鍗囧閬庣▼杓冩參)锛岃鏄庢浉涓婃墍瑾殑甯惰級
鑳藉姏鏄悊璜栧€�锛岀従(xi脿n)鍫存檪10KV闆荤簻闀峰害鍙仈(d谩)鍒�3-8鍏噷銆�
鍏�銆�35KV闆荤簻瑭﹂鏅�锛屾噳(y墨ng)鍠浉瑭﹂锛岄浕澹撹ō(sh猫)瀹氱偤60KV(甯歌(gu墨)瑕佹眰)-78KV(鎸夎(gu墨)绋�
闇€瑕�)锛岄牷鐜囪ō(sh猫)瀹氱偤0.1Hz(鎺ㄨ枽浣跨敤)銆�0.05Hz(鎺ㄨ枽浣跨敤)銆�0.02Hz(鍗囧閬�
绋嬭純鎱�)锛岃鏄庢浉涓婃墍瑾殑甯惰級鑳藉姏鏄悊璜栧€硷紝鐝�(xi脿n)鍫存檪35KV闆荤簻闀峰害鍙仈(d谩)鍒�
3-5鍏噷銆�
涓�銆佸闆荤簻闀峰害杓冪煭(灏忎簬500绫�)锛岃│鍝侀浕瀹瑰皬浜�0.1μF鏅備笉鑳芥甯稿崌澹�锛屾
鏅傝珛骞惰伅(li谩n)0.1μF楂樺闆诲銆�
鍏�銆佽珛灏囬珮澹撶窔灏奸緧绔瓙鎸変笂闈㈢殑绶ㄨ櫉鏃嬪埌鐩告噳(y墨ng)鐨勫凹榫嶅骇涓�锛岃淇濊瓑楂樺绶氭帴瑙�
鑹ソ, 鎺ヨЦ涓嶅ソ锛屾渻寮曡捣鏀鹃浕锛岀噿澹為珮澹撶銆傚凹榫嶇瀛愭棆绶婃檪, 瑕佹敞鎰忓姏搴�,
閬庡害鏃嬬穵鍙兘鏈冩悕澹炲凹榫嶇瀛愩€�
涔�銆佸鏋滄槸閰嶅叐鍊嬪崌澹撳櫒鐨勮秴浣庨牷锛氱暥(d膩ng)瑭﹂闆诲≤30KV鏅傦紝鍙皣鍗囧鍣ㄨ櫉瑷�(sh猫)瀹氱偤
I锛屾鏅傚彧闇€I铏熷崌澹撳櫒鍗囧锛孖I铏熷崌澹撳櫒涓嶉€f帴锛屼篃鍙皣鍗囧鍣ㄨ櫉瑷�(sh猫)瀹氱偤
I+II锛屾鏅侷铏熷崌澹撳櫒鍜孖I铏熷崌澹撳櫒涓茶伅(li谩n)浣跨敤锛涚暥(d膩ng)瑭﹂闆诲锛�30KV鏅傦紝蹇�
闋堝皣I铏熷崌澹撳櫒鍜孖I铏熷崌澹撳櫒涓茶伅(li谩n)浣跨敤锛岄€f帴鏂规硶瑕嬭鏄庢浉鍏�(n猫i)鎿嶄綔瑾槑銆�
鐣�(d膩ng)杓稿嚭闆诲≥70KV鏅�锛岃珛灏囬珮澹撻浕绾滄嚫绌�锛�
鍗�銆佹帶鍒惰几鍑虹窔鎺ュ崌澹撳櫒绔殑鑸┖鎻掗牠闇€瑕佸線涓嬪鍐嶆棆杞�(zhu菐n)锛屾墠鑳芥嫈鍑�锛�
鍗佷竴銆佸缓璀颁娇鐢�220V浜ゆ祦闆绘簮銆傝嫢涓€瀹氳浣跨敤鐧�(f膩)闆绘(j墨)渚涢浕锛岀敱浜�0.1Hz瓒呬綆闋�
鏄牴鎿�(j霉)闆绘簮杓稿叆闋荤巼渚嗚(di脿o)鍒剁殑锛屽皪鐧�(f膩)闆绘(j墨)鏈夎純楂樼殑瑕佹眰锛岃姹傛槸锛氶牷鐜�
50Hz±2%锛岄浕澹�220V±5%锛屽姛鐜囧ぇ浜�10KW锛岀壒鍒ヨ姹傜櫦(f膩)闆绘(j墨)杓稿嚭闋荤巼绌�(w臎n)
瀹�锛岄牷鐜囦笉闅ㄨ矤(f霉)杓夌殑璁婂寲鑰岃畩鍖栵紙濂戒娇鐢ㄦ暩(sh霉)纰艰畩闋荤櫦(f膩)闆绘(j墨)锛�锛屽苟涓斿湪鐧�(f膩)闆�
姗�(j墨)鐨勮几鍑虹骞惰伅(li谩n)涓€鍙姛鐜囦笉灏忎簬800W鐨勯樆鎬ц矤(f霉)杓�(濡傞浕鐖愮瓑)锛屼互渚跨┅(w臎n)瀹氱櫦(f膩)
闆绘(j墨)鐨勯亱(y霉n)杞�(zhu菐n)閫熷害锛屽鏋滈牷鐜囦笉鑳界┅(w臎n)瀹�锛岃偗瀹氫笉鑳芥甯稿崌澹�銆傚湪鏁村€嬪崌澹撻亷绋�
涓�锛屽繀闋堜娇鐢ㄩ€g簩(x霉)宸ヤ綔鐨勯樆鎬ц矤(f霉)杓�锛屼笉鑳戒娇鐢ㄦ渻鑷嫊鍒囨柗鐨勯樆鎬ц矤(f霉)杓�(濡傞浕
闁嬫按澹恒€佹湁婧帶闁嬮棞(gu膩n)鐨勯浕鐖�锛屾按闁嬩互鍚庢垨鑰呮韩搴﹂仈(d谩)鍒板悗锛屾渻鑷嫊鍒囨柗璨�(f霉)
杓�)锛屽惁鍓囦竴瀹氭渻鍤�(y谩n)閲�?f霉)p澹炲剙鍣�?銆�?锛�
鍗佷簩銆佺暥(d膩ng)闁嬫(j墨)鏅傞浕婧愮噲涓嶄寒鎴栧睆骞曠劇椤ず锛屽彲鑳芥槸淇濋毆绠$噿浜�锛屾彌1鍙繚闅灏�
濂�锛屾垜鍊戦厤鏈�10鍙繚闅鍌欑敤銆�
鍗佷笁銆佸鏋滈渶瑕侀暦鏈熷伐浣滐紙閫g簩(x霉)宸ヤ綔鏅傞枔瓒呴亷20鍒嗛悩锛�锛屼娇鐢ㄥ墠璜嬪皣娉ㄦ补瀛旀墦
闁嬶紝瑭﹂瀹岀暍鍚�锛屾壄绶婃敞娌瑰瓟銆�
璀﹀憡锛氬湪鍋氶浕绾滆€愬瑭﹂鏅�锛屽繀闋堝皣鑺窔鍜岀禃绶e堡鐗╃悊涓婂垎闆�锛屼笉鑳界敤鍏跺畠鐗╁搧瑕嗚搵鍦ㄥ叾涓婇潰锛屽惁鍓囨渻寮曡捣楂樺鏀鹃浕锛屾悕澹炲剙鍣�?銆�?锛�
0.1Hz瓒呬綆闋婚珮澹撶櫦(f膩)鐢熷櫒
涓€銆佽秴浣庨牷绯诲垪鐢�(ch菐n)鍝佸強閬哥敤
1銆�80KV瓒呬綆闋� 琛�1
鍨嬭櫉 | 椤嶅畾闆诲 | 甯惰級鑳藉姏 | 闆绘簮淇濋毆绠� | 閲嶉噺 | 鐢ㄩ€� |
80KV 瓒呬綆闋� | 80kV (宄板€�) | 0.1Hz,≤0.5µF | 25A | 鎺у埗鍣細6kg 鍗囧楂擨锛�30kg 鍗囧楂擨I锛�50kg | 鐢ㄤ簬35KV鍙婁互涓嬮浕绾�銆佺櫦(f膩)闆绘(j墨) |
0.05Hz,≤1.1µF | |||||
0.02Hz,≤2.5µF |
2銆佹牴鎿�(j霉)琚│灏嶈薄閬告搰閬╃暥(d膩ng)瑕�(gu墨)鏍肩殑鐢�(ch菐n)鍝�銆�
浣跨敤鏅傦紝瑭﹀搧闆诲閲忎笉寰楄秴閬庡剙鍣ㄧ殑椤嶅畾瀹归噺銆傝│鍝侀浕瀹归噺閬庡皬锛屾渻褰遍熆杓稿嚭娉㈠舰銆傝嫢灏忎簬0.05µF锛屽剙鍣ㄥ皣涓嶈兘姝e父杓稿嚭?锛熷埞鈷�?li谩n)0.1 µF鐨勯浕瀹硅紨鍔╄几鍑恒€備笅闈㈡槸涓€浜涜ō(sh猫)鍌欑殑闆诲閲�锛屼緵鐢ㄦ埗鍙冭€�銆�
涓嶅悓鐧�(f膩)闆绘(j墨)鐨勫柈鐩稿皪鍦伴浕瀹归噺 琛�2
| 鐏� 闆� | 姘� 闆� | |||||
鐧�(f膩)闆绘(j墨)瀹归噺锛圡W锛� | 200 | 300 | 600 | 85 | 125-150 | 300 | 400 |
鍠浉灏嶅湴 闆诲锛�µF锛� | 0.2-0.25 | 0.18-0.26 | 0.31-0.34 | 0.69 | 1.8-1.9 | 1.7-2.5 | 2.0-2.5 |
浜よ伅(li谩n)鑱氫箼鐑禃绶e柈鑺浕鍔涢浕绾滅殑闆诲閲�(µF/km) 琛�3
闆诲µF/Km | ||||||||||||
闆诲kV | 10 | 0.15 | 0.17 | 0.18 | 0.19 | 0.21 | 0.24 | 0.26 | 0.28 | 0.32 | 0.38 | - |
| 35 | - | - | - | 0.11 | 0.12 | 0.13 | 0.14 | 0.15 | 0.16 | 0.17 | 0.19 |
鎴潰绌峜m2 | 16 | 25 | 35 | 50 | 70 | 95 | 120 | 150 | 185 | 240 | 270 |
3銆佽│鍝侀浕娴佺殑浼扮畻鏂规硶锛�
瑷堢畻鍏紡锛�?銆傛鍓�?pi;f锛o嫉
浜�銆佽秴浣庨牷绲曠罚鑰愬瑭﹂鍘熺悊
瓒呬綆闋荤禃绶h€愬瑭﹂瀵﹂殯涓婃槸宸ラ牷鑰愬瑭﹂鐨勪竴绋浛浠f柟娉曘€傛垜鍊戠煡閬�锛屽湪灏嶅ぇ鍨嬬櫦(f膩)闆绘(j墨)銆侀浕绾滅瓑瑭﹀搧閫�(j矛n)琛屽伐闋昏€愬瑭﹂鏅�锛岀敱浜庡畠鍊戠殑绲曠罚灞ゅ憟鐝�(xi脿n)杓冨ぇ鐨勯浕瀹归噺锛屾墍浠ラ渶瑕佸緢澶у閲忕殑瑭﹂璁婂鍣ㄦ垨璜ф尟璁婂鍣�銆傞€欐ǎ涓€浜涘法澶х殑瑷�(sh猫)鍌�锛屼笉浣嗙閲�锛岄€犲児楂�锛岃€屼笖浣跨敤鍗佸垎涓嶄究銆傜偤浜嗚В姹洪€欎竴鐭涚浘锛岄浕鍔涢儴闁€閲囩敤浜嗛檷浣庤│椹楅牷鐜�锛屽緸鑰岄檷浣庝簡瑭﹂闆绘簮鐨勫閲忋€傚緸鍦嬪収(n猫i)澶栧骞寸殑鐞嗚珫鍜屽韪愯瓑鏄�锛岀敤0.1Hz瓒呬綆闋昏€愬瑭﹂鏇夸唬宸ラ牷鑰愬瑭﹂锛屼笉浣嗚兘鏈夊悓妯g殑绛夋晥鎬�锛岃€屼笖瑷�(sh猫)鍌欑殑楂旂⿳澶х偤绺皬锛岄噸閲忓ぇ鐐烘笡杓� 锛岀悊璜栦笂瀹归噺绱勭偤宸ラ牷鐨勪簲鐧惧垎涔嬩竴銆傝│椹楃▼搴忓ぇ澶у湴娓涘寲锛岃垏宸ラ牷瑭﹂鐩告瘮*鎬ф洿澶�銆傞€欏氨鏄偤浠€涔堢櫦(f膩)閬�(d谩)鍦嬪鏅亶閲囩敤閫欎竴鏂规硶鐨勫師鍥�銆傛垜鍦嬮浕鍔涢儴宸插鎵樻婕㈤珮澹撶爺绌舵墍璧疯崏浜嗐€�35kV鍙婁互涓嬩氦鑱�(li谩n)鑱氫箼鐑禃绶i浕鍔涢浕绾滆秴浣庨牷锛�0.1Hz锛夎€愬瑭﹂鏂规硶銆嬭妤�(y猫)妯�(bi膩o)婧�(zh菙n)銆傛垜鍦嬫鍦ㄦ帹寤i€欎竴鏂规硶锛屾湰鍎€鍣ㄦ槸鏍规摎(j霉)鎴戝湅閫欎竴闇€瑕佺爺鍒惰€屾垚鐨�?锛熻摦V娉涚敤浜庨浕绾�銆佸ぇ鍨嬮珮澹撴棆杞�(zhu菐n)闆绘(j墨)銆侀浕鍔涢浕瀹瑰櫒鐨勪氦娴佽€愬瑭﹂涔嬩腑銆�
涓�銆佺敘(ch菐n)鍝佺啊浠�
鏈敘(ch菐n)鍝佺祼(ji茅)鍚堜簡鐝�(xi脿n)浠f暩(sh霉)瀛楄畩闋诲厛閫�(j矛n)鎶€琛�(sh霉)锛岄噰鐢ㄥ井姗�(j墨)鎺у埗锛屽崌澹撱€侀檷澹�銆佹脯閲忋€佷繚璀�(h霉)*鑷嫊鍖�锛屽苟涓斿湪鑷嫊鍗囧閬庣▼涓兘閫�(j矛n)琛屼汉宸ュ共闋�(y霉)銆傜敱浜庡叏闆诲瓙鍖栵紝鎵€浠ラ珨绌嶅皬閲嶉噺杓�銆佸ぇ灞忓箷娑叉櫠椤ず锛屾竻鏅扮洿瑙€銆佹墦鍗版(j墨)杓稿嚭瑭﹂鍫卞憡銆傝ō(sh猫)瑷堟寚妯�(bi膩o)*绗﹀悎銆婇浕鍔涜ō(sh猫)鍌欐脯瑭﹀剙鍣ㄩ€氱敤鎶€琛�(sh霉)姊濅欢锛岀4閮ㄥ垎锛氳秴浣庨牷楂樺鐧�(f膩)鐢熷櫒閫氱敤鎶€琛�(sh霉)姊濅欢銆嬮浕鍔涜妤�(y猫)妯�(bi膩o)婧�(zh菙n)锛屼娇鐢ㄥ崄鍒嗘柟渚�?锛孎(xi脿n)鍦ㄥ湅鍏�(n猫i)澶栧潎閲囩敤姗�(j墨)姊板紡鐨勮睛娉曢€�(j矛n)琛岃(di脿o)鍒跺拰瑙h(di脿o)鐢�(ch菐n)鐢熻秴浣庨牷淇¤櫉锛屾墍浠ュ瓨鍦ㄦ寮︽尝娉㈠舰涓嶆(bi膩o)婧�(zh菙n)锛屾脯閲忚宸ぇ锛岄珮澹撻儴鍒嗘湁鐏姳鏀鹃浕锛岃ō(sh猫)鍌欑閲�锛岃€屼笖姝e鸡娉㈢殑浜�锛屽洓璞¢檺閭勯渶瑕佸ぇ鍔熺巼楂樺闆婚樆閫�(j矛n)琛屾斁闆绘暣褰紝鎵€浠ヨō(sh猫)鍌欑殑鏁撮珨鍔熻€楄純澶�銆傛湰鐢�(ch菐n)鍝佸潎鑳藉厠鏈嶉€欐ǎ涓€浜涗笉瓒充箣铏曪紝鍙﹀锛岄倓鏈夊涓嬬壒榛�(di菐n)闇€瑕佺壒鍒ヨ鏄庯細
鈽� 闆绘祦銆侀浕澹撴暩(sh霉)鎿�(j霉)鍧囩洿鎺ラ€氶亷楂樺鍋�(c猫)閲囨ǎ鐛插緱锛屾墍浠ユ暩(sh霉)鎿�(j霉)鐪熷銆佹簴(zh菙n)纰�銆�
鈽� 閬庡淇濊(h霉)锛氱暥(d膩ng)杓稿嚭瓒呴亷鎵€瑷�(sh猫)瀹氱殑闄愬鍊兼檪锛屽剙鍣ㄥ皣鍋滄(j墨)淇濊(h霉)锛屽嫊浣滄檪闁撳皬浜庯紥锛恗s銆�
鈽� 閬庢祦淇濊(h霉)锛氳ō(sh猫)瑷堢偤楂樹綆澹撻洐閲嶄繚璀�(h霉)锛岄珮澹撳伌(c猫)鍙寜瑷�(sh猫)瀹氬€奸€�(j矛n)琛岀簿纰哄仠姗�(j墨)淇濊(h霉)锛涗綆澹撳伌(c猫)鐨勯浕娴佽秴閬庨瀹氶浕娴佹檪灏囬€�(j矛n)琛屽仠姗�(j墨)淇濊(h霉)锛屽嫊浣滄檪闁撻兘灏忎簬锛掞紣ms銆�
鈽� 楂樺杓稿嚭淇濊(h霉)闆婚樆瑷�(sh猫)瑷堝湪鍗囧楂斿収(n猫i)锛屾墍浠ュ闈笉闇€鍙︽帴淇濊(h霉)闆婚樆銆�
鈽� 鐢变簬閲囩敤浜嗛珮浣庡闁夌挵(hu谩n)璨�(f霉)鍙嶉鎺у埗闆昏矾锛屾墍浠ヨ几鍑虹劇瀹瑰崌鏁堟噳(y墨ng)銆�
鍥�銆佹妧琛�(sh霉)鍙冩暩(sh霉)
1銆佽几鍑洪瀹氶浕澹擄細鍙冭琛�1
2銆佽几鍑洪牷鐜囷細0.1Hz銆�0.05Hz銆�0.02Hz銆�
3銆佸付杓夎兘鍔涳細鍙冭琛�1 0.1 Hz 澶�0.5µF
0.05 Hz 澶�1.1µF
0.02 Hz 澶�2.5µF
4銆佹脯閲忕簿搴︼細±锛�3%婊块噺绋�+0.5KV锛�
5銆侀浕澹撴尝褰㈠け鐪熷害锛�≤5%
6銆佷娇鐢ㄦ浠讹細鎴跺収(n猫i)銆佹埗澶�锛涙韩搴︼細-10鈩冣埥+40鈩冿紱婵曞害锛�≤85%RH
7銆侀浕婧愶細浜ゆ祦50 Hz锛�220V ±5%
8銆侀浕婧愪繚闅锛氬弮瑕嬭〃1