防爆电气设备防雷接地 防爆电气设备的接地保护是如何来规定的？
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电气设备接线盒内部（当采用直接引入方式时，则在主空腔内部）必须设有专用的内接地螺栓、并标志接地符号“〨”。但电机车上的电气设备和电压不高于36V的电气设备除外。
对没有必要接地或不允许接地的电气设备，可不设内、外接地螺栓。Ⅱ类本质安全型的电气设备可只设专用外接地螺栓。
对内接地用的螺栓直径要求是：当导电芯线截面不大于35mm时，应不小于接线螺栓直径。当导电芯线截面大于35mmz时，应不小于连接导电芯线截面之半的螺栓直径，但至少等于连接35mm2芯线的螺栓直径。
对外接地用的螺栓直径要求是：功率大于10kW,的设备，不得小于M12；功率大于5kW至10kW, 的设备，不得小于M10；功率大于250W, 至5kW的设备，不得小于M8；当功率不大于250W, 且电流不大于5A的设备、不得小于M6；本质安全型电气设备和仪器仪表类，外接地螺栓能压紧接地芯线即可。
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绛旓細1. 閬块浄閽堛傞伩闆烽拡鏄渶甯歌鐨闃查浄瑁呯疆涔嬩竴銆傚畠鑳藉灏嗕簯灞備腑鐨勭數鑽峰紩瀵艰嚦鍦伴潰锛屼粠鑰岄槻姝㈤浄鐢靛寤虹瓚鐗╂垨浜轰綋閫犳垚鎹熷銆傞伩闆烽拡閫氳繃杩炴帴寤虹瓚鐗╃殑椤堕儴鍜屽湴闈紝褰㈡垚涓涓湁鏁堢殑瀵肩數閫氶亾锛屽皢闆风數鐢垫祦寮曞叆鍦颁笅锛屼繚鎶ゅ缓绛戠墿鍜屼汉鍛樼殑瀹夊叏銆2. 閬块浄缃戙傞伩闆风綉鏄竴绉嶇敤浜庡ぇ闈㈢Н闃查浄鐨鎺ュ湴瑁呯疆銆傚畠閫氬父瀹夎鍦ㄥ缓绛戠墿鐨勫眿...
绛旓細涓嶈兘銆鐢靛櫒璁惧鎺ュ湴妗╅氬父灞炰簬灞呮皯鐢ㄧ數锛屽彧闇瑕佷繚闅滀汉韬畨鍏紱鑰闃查浄鎺ュ湴妗╂槸涓轰簡淇濇姢寤虹瓚鐗╁強鍏跺唴閮鐢垫皵璁惧涓嶅彈闆峰嚮鑰岃缃殑锛岄渶瑕佷繚闅滃缓绛戠墿鍙婅澶囩殑瀹夊叏鎬э紱涓嶈兘鐩搁偦锛屽惁鍒欎細褰卞搷鍒板郊姝ょ殑鍔熻兘銆傞槻闆锋帴鍦版々宸ョ▼鍖呮嫭鎺ュ湴瑁呯疆銆侀槻闆峰紩涓嬬嚎鍙閬块浄甯︾殑瀹夎銆
绛旓細鎴戣涓闃查浄鎺ュ湴鍜鐢垫皵璁惧淇濇姢鎺ュ湴鍒嗗紑璁剧疆鏍规湰娌℃湁蹇呰锛岄噯鐢ㄥ叡鐢ㄦ帴鍦扮粨鍚堣鑼冧腑鍚勯」闃查浄鎺柦锛屾棤璁虹數姘旇澶囪繕鏄汉鍛橀兘涓嶅瓨鍦ㄥ畨鍏ㄩ棶棰樸傜敳鏂圭數姘斿伐绋嬪笀鐨勬媴蹇冪函绮瑰浣欙紒鏇翠綍鍐靛浜庝竴涓缓绛戠墿锛屼粠鎺ュ湴鍋氭硶銆佹硠娴佽矾寰勭瓑鍥犵礌鏉ヨ锛岃繖涓ょ鎺ュ湴鏍规湰灏遍毦浠ュ畬鍏ㄥ垎寮銆
绛旓細10kV骞惰仈鐢靛鍣ㄣ佹煴涓婃柇璺櫒銆佺數缂嗙粓绔ご鐨闃查浄瑁呯疆閲囩敤姘у寲閿閬块浄鍣ㄣ傚缁忓父寮璺繍琛屽張甯︾數鐨勬煴涓婃柇璺櫒涓や晶鍧囧簲瑁呰閬块浄鍣紝鐢电紗缁堢澶磋璁句竴缁勯伩闆峰櫒銆備互涓鎺ュ湴寮曚笅绾垮簲鍒嗗埆涓庡悇鐢垫皵璁惧鐨勫澹宠繛鎺ワ紝鎺ュ湴瑁呯疆鐨勬帴鍦扮數闃讳笉搴斿ぇ浜10惟銆傦紙5锛夊浜10kV鏋剁┖绾胯矾鐙珛瀹夎鐨勯伩闆峰櫒搴斾紭鍏堥夌敤璺岃惤寮忛伩闆峰櫒銆
绛旓細1銆佸箍鍦洪珮鏉嗙伅鐨闃查浄鎺ュ湴 锛1锛夊杩欎簺鐏叿鑰冭檻鐨勪笉鏄槻瑙︾數锛岃屼富瑕佽冭檻鐨勬槸闃查浄锛岀伅鏉嗛《閮ㄥ畨瑁呰嫢骞蹭釜楂樺彂鍏夊害鐨勭伅鍏凤紝闃查浄鐨勬柟娉曟槸鍦ㄧ伅鏉嗕笂瑁呭瘜鍏板厠鏋楅伩闆烽拡銆傜敱浜庡彧鏄繚鎶ょ伅鍏凤紝淇濇姢鑼冨洿寰堝皬銆傚洜姝や笉蹇呭畨瑁呬环鏍兼槀璐电殑閬块浄閽堛傚埄鐢ㄩ噾灞炵伅鏉嗘湰浣撲綔涓洪伩闆烽拡鐨勫紩涓嬬嚎锛屽吋浣滀繚鎶ょ嚎銆傦紙2锛変负浜嗛槻姝㈤浄鍑绘椂浜哄湪...
绛旓細闃查浄鎺ュ湴瑁呯疆閮ㄥ垎姒傚康锛1锛 闆风數鎺ュ彈瑁呯疆锛氱洿鎺ユ垨闂存帴鎺ュ彈闆风數鐨勯噾灞炴潌锛堟帴闂櫒锛夛紝濡傞伩闆烽拡銆侀伩闆峰甫锛堢綉锛夈佹灦绌哄湴 绾垮強閬块浄鍣ㄧ瓑銆2锛 寮曚笅绾匡細鐢ㄤ簬灏嗛浄鐢垫祦浠庢帴闂櫒浼犲鑷虫帴鍦拌缃殑瀵间綋銆3锛 鎺ュ湴绾匡細鐢垫皵璁惧銆佹潌濉旂殑鎺ュ湴绔瓙涓庢帴鍦颁綋鎴栭浂绾胯繛鎺ョ敤鐨勬甯告儏鍐典笅涓嶈浇娴佺殑閲戝睘瀵间綋銆4锛 鎺ュ湴浣擄紙...
绛旓細PE銆丳GND銆丗G-淇濇姢鍦版垨鏈哄３;BGND鎴朌C-RETURN-鐩存祦-48V锛+24V锛夌數婧愶紙鐢垫睜锛夊洖娴;GND-宸ヤ綔鍦;DGND-鏁板瓧鍦;AGND-妯℃嫙鍦;LGND-闃查浄淇濇姢鍦般1銆佷竴鑸帴鍦扮鍙锋槸涓绔栦笁妯紝绔栦笌绗竴妯浉鎺ャ2銆佹棤鍣０鎺ュ湴绗﹀彿鏄竴鑸帴鍦板姞涓鍗婂渾鍙ｆ湞涓嬨3銆佷繚鎶ゆ帴鍦扮鍙锋槸涓鑸帴鍦扮殑鍩虹涓婂姞涓鍦堝寘浣忎笅涓夋í銆鐢垫皵鎺ュ湴...
