{"id":1637,"date":"2026-05-08T00:00:00","date_gmt":"2026-05-08T00:00:00","guid":{"rendered":"http:\/\/yieou.com\/?post_type=products&p=1637"},"modified":"2026-09-16T04:45:15","modified_gmt":"2026-09-16T04:45:15","slug":"lxk-80-300-zero-sequence-current-transformer","status":"publish","type":"products","link":"https:\/\/yieou.com\/zh\/product\/lxk-80-300-zero-sequence-current-transformer\/","title":{"rendered":"LXK-80\u2013300 Zero-Sequence Current Transformer"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u8ff0<\/h2>\n\n\n\n

LXK-80\u2013300 \u96f6\u5e8f\u7535\u6d41\u4e92\u611f\u5668<\/a> \u8fd9\u662f\u4e00\u79cd\u73af\u6c27\u6811\u8102\u6d47\u6ce8\u5f0f\u7535\u6d41\u4e92\u611f\u5668\uff0c\u4e13\u4e3a\u5ba4\u5185 10 \u5343\u4f0f\u548c 35 \u5343\u4f0f\u4ea4\u6d41\u7535\u529b\u7cfb\u7edf\u8bbe\u8ba1\u3002<\/p>\n\n\n\n

\u8be5\u53d8\u538b\u5668\u91c7\u7528\u73af\u5f62\u78c1\u82af\u548c\u6574\u4f53\u6d47\u6ce8\u6811\u8102\u7ed3\u6784\uff0c\u4e3b\u8981\u7528\u4e8e\u975e\u6709\u6548\u63a5\u5730\u4e2d\u6027\u70b9\u7cfb\u7edf\u4e2d\u7684\u5355\u76f8\u63a5\u5730\u6545\u969c\u68c0\u6d4b\u3001\u7ee7\u7535\u4fdd\u62a4\u548c\u7edd\u7f18\u76d1\u6d4b\u3002<\/p>\n\n\n\n

\u5b83\u5e7f\u6cdb\u5b89\u88c5\u5728\u4e2d\u538b switchgear<\/a>\u73af\u7f51\u67dc\u3001\u7bb1\u5f0f\u53d8\u7535\u7ad9\u3001\u7535\u7f06\u5206\u652f\u7bb1\u7b49\u914d\u7535\u8bbe\u5907\u3002\u8be5\u4ea7\u54c1\u662f\u7535\u529b\u7cfb\u7edf\u63a5\u5730\u6545\u969c\u4fdd\u62a4\u65b9\u6848\u4e2d\u7684\u5173\u952e\u4f20\u611f\u5143\u4ef6\u3002<\/p>\n\n\n\n

\u4ea7\u54c1\u7279\u70b9<\/h2>\n\n\n\n

\u7edd\u7f18\u4e0e\u7535\u6c14\u6027\u80fd<\/h3>\n\n\n\n
    \n
  • Epoxy resin cast insulation:<\/strong>
    The transformer is integrally formed using an epoxy resin vacuum-casting process. The solid insulating body contains no internal air gaps and provides excellent dielectric performance.<\/li>\n\n\n\n
  • Oil-free dry-type construction:<\/strong>
    The product contains no insulating oil, eliminating the risks of oil leakage, oil contamination, and oil-related fire hazards. It is suitable for indoor oil-free distribution systems.<\/li>\n\n\n\n
  • High-sensitivity zero-sequence current detection:<\/strong>
    \u73af\u5f62\u94c1\u82af\u91c7\u7528\u4f18\u8d28\u53e0\u7247\u7845\u94a2\u5236\u6210\uff0c\u52b1\u78c1\u7535\u6d41\u4f4e\uff0c\u78c1\u611f\u5e94\u5ea6\u9ad8\uff0c\u80fd\u7cbe\u786e\u68c0\u6d4b\u5355\u76f8\u63a5\u5730\u6545\u969c\u65f6\u4ea7\u751f\u7684\u96f6\u5e8f\u7535\u6d41\u3002<\/li>\n\n\n\n
  • \u517c\u5bb9\u63a5\u5730\u6545\u969c\u4fdd\u62a4\u8bbe\u5907<\/strong>
    \u8be5\u53d8\u538b\u5668\u53ef\u4e3a\u4f4e\u7535\u6d41\u63a5\u5730\u6545\u969c\u9009\u7ebf\u88c5\u7f6e\u3001\u96f6\u5e8f\u4fdd\u62a4\u7ee7\u7535\u5668\u3001\u76d1\u6d4b\u88c5\u7f6e\u53ca\u5176\u4ed6\u4fdd\u62a4\u8bbe\u5907\u63d0\u4f9b\u7535\u6d41\u4fe1\u53f7\u3002<\/li>\n\n\n\n
  • \u5bbd\u5149\u5708\u8303\u56f4<\/strong>
    \u5185\u90e8\u53ef\u7528\u5b54\u5f84\u8303\u56f4\u4e3a 80 \u81f3 300 \u6beb\u7c73\u3002\u4e0d\u540c\u578b\u53f7\u53ef\u9002\u5e94\u5404\u79cd\u4e09\u76f8\u7535\u7f06\u675f\u6216\u6bcd\u7ebf\u6392\u5e03\u7f6e\uff0c\u800c\u65e0\u9700\u8fdb\u884c\u91cd\u5927\u7684\u5b89\u88c5\u6539\u9020\u3002<\/li>\n\n\n\n
  • Low partial discharge:<\/strong>
    The advanced casting process limits partial discharge to no more than 10 pC, helping reduce insulation ageing and improve long-term operating reliability.<\/li>\n\n\n\n
  • High insulation withstand capability:<\/strong>
    \u8be5\u53d8\u538b\u5668\u53ef\u627f\u53d7 10 kV \u548c 35 kV \u7cfb\u7edf\u89c4\u5b9a\u7684\u5de5\u9891\u8010\u53d7\u7535\u538b\u548c\u96f7\u7535\u51b2\u51fb\u8010\u53d7\u7535\u538b\u8981\u6c42\u3002<\/li>\n<\/ul>\n\n\n\n

    \u7ed3\u6784\u548c\u5b89\u88c5\u7279\u70b9<\/h3>\n\n\n\n
      \n
    • Fully enclosed dry-type structure:<\/strong>
      \u78c1\u82af\u548c\u6b21\u7ea7\u7ed5\u7ec4\u5c01\u88c5\u5728\u73af\u6c27\u6811\u8102\u6d47\u6ce8\u4f53\u5185\u90e8\u3002\u8be5\u4ea7\u54c1\u63d0\u4f9b IP20 \u9632\u62a4\u7b49\u7ea7\uff0c\u5e76\u4e14\u6ca1\u6709\u66b4\u9732\u7684\u5185\u90e8\u5e26\u7535\u90e8\u4ef6\u3002<\/li>\n\n\n\n
    • Compact construction:<\/strong>
      \u73af\u5f62\u8bbe\u8ba1\u5360\u7528\u6709\u9650\u7684\u5b89\u88c5\u7a7a\u95f4\uff0c\u5e76\u4e0e\u6807\u51c6\u5f00\u5173\u8bbe\u5907\u548c\u7535\u7f06\u9694\u95f4\u5e03\u5c40\u517c\u5bb9\u3002<\/li>\n\n\n\n
    • Through-aperture design:<\/strong>
      \u4e09\u76f8\u7535\u7f06\u6216\u6bcd\u7ebf\u76f4\u63a5\u7a7f\u8fc7\u4e2d\u5fc3\u5b54\uff0c\u65e0\u9700\u4f20\u7edf\u7684\u521d\u7ea7\u7ed5\u7ec4\u8fde\u63a5\u5373\u53ef\u5b9e\u73b0\u96f6\u5e8f\u7535\u6d41\u68c0\u6d4b\u3002<\/li>\n\n\n\n
    • Simplified primary-circuit arrangement:<\/strong>
      \u8d2f\u901a\u5f0f\u7ed3\u6784\u51cf\u5c11\u4e86\u521d\u7ea7\u4fa7\u8fde\u63a5\u6570\u91cf\uff0c\u7b80\u5316\u4e86\u5b89\u88c5\uff0c\u5e76\u6709\u52a9\u4e8e\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c11\u6f5c\u5728\u7684\u8fde\u63a5\u70b9\u53ca\u76f8\u5173\u6545\u969c\u3002<\/li>\n\n\n\n
    • Clearly identified secondary terminals:<\/strong>
      \u4e8c\u6b21\u7aef\u5b50\u7531\u900f\u660e\u76d6\u677f\u4fdd\u62a4\uff0c\u5e76\u6e05\u6670\u6807\u8bb0\uff0c\u65b9\u4fbf\u63a5\u7ebf\u3002\u7aef\u5b50\u5e03\u5c40\u517c\u5bb9\u5e38\u89c1\u7684\u96f6\u5e8f\u4fdd\u62a4\u56de\u8def\u8981\u6c42\u3002<\/li>\n\n\n\n
    • Flexible mounting:<\/strong>
      The metal mounting bracket supports secure bolt installation. The transformer can be mounted horizontally or vertically inside indoor switchgear and provides reliable vibration resistance.<\/li>\n<\/ul>\n\n\n\n

      \u64cd\u4f5c\u4e0e\u7ef4\u62a4\u7279\u6027<\/h3>\n\n\n\n
        \n
      • Low-maintenance operation:<\/strong>
        The dry-type, oil-free structure presents no oil leakage or oil-related fire risk. The epoxy resin body provides high mechanical strength, impact resistance, and ageing resistance.<\/li>\n\n\n\n
      • Wide operating temperature range:<\/strong>
        The transformer can operate at ambient temperatures from -30\u00b0C to +70\u00b0C. The epoxy resin maintains stable insulation and mechanical properties without becoming brittle or deformed.<\/li>\n\n\n\n
      • Stable signal accuracy:<\/strong>
        The high-quality silicon steel core and enamelled copper winding provide low operating losses, limited temperature rise, and stable zero-sequence current detection.<\/li>\n\n\n\n
      • Reliable protection performance:<\/strong>
        \u53d8\u538b\u5668\u5728\u5176\u989d\u5b9a\u8303\u56f4\u5185\u53ef\u627f\u53d7\u5f00\u5173\u8fc7\u7535\u538b\u548c\u77ed\u8def\u7535\u6d41\u7684\u5f71\u54cd\uff0c\u6709\u52a9\u4e8e\u786e\u4fdd\u53ef\u9760\u7684\u63a5\u5730\u6545\u969c\u4fdd\u62a4\u8fd0\u884c\u3002<\/li>\n<\/ul>\n\n\n\n

        \u6280\u672f\u89c4\u683c<\/h2>\n\n\n\n

        \u7535\u6c14\u53c2\u6570<\/h3>\n\n\n\n
        \u53c2\u6570<\/th>\u89c4\u683c<\/th><\/tr><\/thead>
        \u9002\u7528\u7cfb\u7edf\u7535\u538b<\/td>10\u5343\u4f0f\/35\u5343\u4f0f\u4ea4\u6d41\u7535\uff0c\u6700\u9ad8\u5de5\u4f5c\u7535\u538b=12\u5343\u4f0f\/40.5\u5343\u4f0f<\/td><\/tr>
        \u989d\u5b9a\u9891\u7387<\/td>50 \u8d6b\u5179<\/td><\/tr>
        Rated Primary Zero-Sequence Current<\/td>Customized according to the system earth-fault current<\/td><\/tr>
        Rated Secondary Current<\/td>5 A or 1 A, customizable<\/td><\/tr>
        Protection Accuracy Class<\/td>10P10 \/ 10P15, customizable<\/td><\/tr>
        \u5de5\u9891\u8010\u538b<\/td>10\u5343\u4f0f\u7cfb\u7edf1\u5206\u949f\u8010\u538b42\u5343\u4f0f\uff1b35\u5343\u4f0f\u7cfb\u7edf1\u5206\u949f\u8010\u538b95\u5343\u4f0f\uff0c\u65e0\u51fb\u7a7f<\/td><\/tr>
        \u96f7\u7535\u51b2\u51fb\u8010\u53d7\u7535\u538b<\/td>10 kV \u7cfb\u7edf\u5cf0\u503c 75 kV\uff1b35 kV \u7cfb\u7edf\u5cf0\u503c 185 kV\uff0c\u65e0\u51fb\u7a7f<\/td><\/tr>
        \u5c40\u90e8\u653e\u7535<\/td>\u226410 pC<\/td><\/tr>
        \u7edd\u7f18\u7535\u963b<\/td>\u22651,000 M\u03a9 between the primary circuit, secondary circuit, and earth<\/td><\/tr>
        Zero-Sequence Current Sensitivity<\/td>Detects earth-fault currents of 0.5 A and above; customizable<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

        \u7ed3\u6784\u548c\u6750\u6599\u53c2\u6570<\/h3>\n\n\n\n
        \u53c2\u6570<\/th>\u89c4\u683c<\/th><\/tr><\/thead>
        \u7edd\u7f18\u4ecb\u8d28<\/td>Fully cast epoxy resin<\/td><\/tr>
        \u9632\u62a4\u7b49\u7ea7<\/td>IP20<\/td><\/tr>
        \u5185\u5f84<\/td>80\u6beb\u7c73\/100\u6beb\u7c73\/150\u6beb\u7c73\/200\u6beb\u7c73\/300\u6beb\u7c73<\/td><\/tr>
        Installation Type<\/td>\u5ba4\u5185\u87ba\u6813\u5b89\u88c5<\/td><\/tr>
        \u70ed\u7b49\u7ea7<\/td>Class B, 130\u00b0C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

        \u73af\u5883\u53c2\u6570<\/h3>\n\n\n\n
        \u53c2\u6570<\/th>\u89c4\u683c<\/th><\/tr><\/thead>
        Installation Altitude<\/td>\u22642,000 m; high-altitude versions available<\/td><\/tr>
        \u5de5\u4f5c\u6e29\u5ea6<\/td>-30\u00b0C \u81f3 +70\u00b0C<\/td><\/tr>
        Storage Temperature<\/td>-40\u00b0C \u81f3 +85\u00b0C<\/td><\/tr>
        \u76f8\u5bf9\u6e7f\u5ea6<\/td>\u226495%, non-condensing<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

        \u9002\u7528\u6807\u51c6<\/h3>\n\n\n\n
        Standard<\/th>\u63cf\u8ff0<\/th><\/tr><\/thead>
        GB 1208<\/td>Current Transformers<\/td><\/tr>
        GB\/T 20840 Series<\/td>Instrument Transformers<\/td><\/tr>
        DL\/T 866<\/td>Code for Selection and Calculation of Current Transformers and Voltage Transformers<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

        \u5e94\u7528<\/h2>\n\n\n\n

        Applicable Voltage Levels<\/h3>\n\n\n\n

        \u9002\u7528\u4e8e\u6700\u9ad8\u7cfb\u7edf\u7535\u538b\u4e3a12\u5343\u4f0f\u548c40.5\u5343\u4f0f\u7684\u5ba4\u518510\u5343\u4f0f\u548c35\u5343\u4f0f\u4ea4\u6d41\u7535\u529b\u7cfb\u7edf\u3002<\/p>\n\n\n\n

        Typical Applications<\/h3>\n\n\n\n
          \n
        • \u6237\u5185\u4e2d\u538b\u5f00\u5173\u67dc\u7684\u5355\u76f8\u63a5\u5730\u6545\u969c\u68c0\u6d4b\u4e0e\u96f6\u5e8f\u4fdd\u62a4<\/li>\n\n\n\n
        • \u73af\u7f51\u67dc<\/li>\n\n\n\n
        • Box-type substations<\/li>\n\n\n\n
        • \u7535\u7f06\u5206\u652f\u7bb1<\/li>\n\n\n\n
        • Distribution stations and switching stations<\/li>\n\n\n\n
        • \u5de5\u4e1a\u4e0e\u77ff\u5c71\u4f01\u4e1a\u4e2d\u768410\u5343\u4f0f\u548c35\u5343\u4f0f\u914d\u7535\u7cfb\u7edf<\/li>\n\n\n\n
        • Commercial buildings and industrial parks<\/li>\n\n\n\n
        • Low-current earth-fault line-selection systems<\/li>\n\n\n\n
        • Zero-sequence protection devices<\/li>\n\n\n\n
        • Earth-fault monitoring for cable and busbar circuits<\/li>\n<\/ul>\n\n\n\n

          \u4e3b\u8981\u529f\u80fd<\/h3>\n\n\n\n

          LXK-80\u2013300 \u68c0\u6d4b\u901a\u8fc7\u5176\u4e2d\u5fc3\u5b54\u7684\u4e09\u76f8\u7535\u6d41\u7684\u77e2\u91cf\u548c\u3002<\/p>\n\n\n\n

          Under normal operating conditions, the three-phase current vectors are balanced, and the resulting zero-sequence current is close to zero. When a single-phase earth fault occurs, the current imbalance produces a detectable zero-sequence current signal.<\/p>\n\n\n\n

          The transformer supplies this signal to:<\/p>\n\n\n\n

            \n
          • Zero-sequence protection relays<\/li>\n\n\n\n
          • Low-current earth-fault line-selection devices<\/li>\n\n\n\n
          • Monitoring equipment<\/li>\n\n\n\n
          • Control systems<\/li>\n\n\n\n
          • Earth-fault alarm devices<\/li>\n<\/ul>\n\n\n\n

            It also provides electrical isolation between the primary power circuit and the secondary protection circuit, helping protect connected equipment and operating personnel.<\/p>\n\n\n\n

            \u64cd\u4f5c\u6761\u4ef6<\/h2>\n\n\n\n

            \u6b63\u5e38\u8fd0\u884c\u6761\u4ef6<\/h3>\n\n\n\n
              \n
            • Installation altitude: no more than 2,000 m<\/li>\n\n\n\n
            • Ambient temperature: -30\u00b0C to +70\u00b0C<\/li>\n\n\n\n
            • Severe or sudden temperature changes should be avoided<\/li>\n\n\n\n
            • Relative humidity: no more than 95%, non-condensing<\/li>\n\n\n\n
            • The environment should be free from corrosive gases<\/li>\n\n\n\n
            • Flammable or explosive substances are not permitted<\/li>\n\n\n\n
            • Severe vibration and mechanical impact should be avoided<\/li>\n\n\n\n
            • Significant dust and salt-spray contamination should be avoided<\/li>\n\n\n\n
            • Indoor bolt-mounted installation<\/li>\n\n\n\n
            • Direct sunlight, rain, and condensation should be avoided<\/li>\n<\/ul>\n\n\n\n

              Special Operating Conditions<\/h3>\n\n\n\n

              Customized products are required for:<\/p>\n\n\n\n

                \n
              • Installation altitudes above 2,000 m<\/li>\n\n\n\n
              • Ambient temperatures outside the range of -30\u00b0C to +70\u00b0C<\/li>\n\n\n\n
              • Severe pollution or salt-spray environments<\/li>\n\n\n\n
              • Chemically corrosive environments<\/li>\n\n\n\n
              • Applications involving strong vibration or mechanical impact<\/li>\n\n\n\n
              • \u975e\u6807\u51c6\u5149\u5708\u76f4\u5f84<\/li>\n\n\n\n
              • Special sensitivity requirements<\/li>\n\n\n\n
              • Special protection accuracy classes<\/li>\n<\/ul>\n\n\n\n

                \u5b89\u88c5\u4e0e\u7ef4\u62a4<\/h2>\n\n\n\n

                \u5b89\u88c5\u8981\u6c42<\/h3>\n\n\n\n
                  \n
                1. Pre-installation inspection:<\/strong>
                  \u68c0\u67e5\u96f6\u5e8f\u7535\u6d41\u4e92\u611f\u5668\uff0c\u786e\u8ba4\u73af\u6c27\u6811\u8102\u672c\u4f53\u65e0\u88c2\u7eb9\u3001\u6c14\u6ce1\u3001\u673a\u68b0\u635f\u4f24\u53ca\u5176\u4ed6\u53ef\u89c1\u7f3a\u9677\u3002\u68c0\u67e5\u7aef\u5b50\u6807\u8bb0\u6e05\u6670\uff0c\u6240\u6709\u9644\u4ef6\u9f50\u5168\u3002\u6838\u5b9e\u578b\u53f7\u3001\u5b54\u5f84\u3001\u7075\u654f\u5ea6\u548c\u4fdd\u62a4\u7cbe\u5ea6\u7b26\u5408\u7cfb\u7edf\u8bbe\u8ba1\u8981\u6c42\u3002<\/li>\n\n\n\n
                2. Mounting:<\/strong>
                  \u5c06\u53d8\u538b\u5668\u653e\u7f6e\u5728\u5f00\u5173\u67dc\u5185\u6307\u5b9a\u4f4d\u7f6e\uff0c\u5e76\u7528\u87ba\u6813\u7a7f\u8fc7\u91d1\u5c5e\u652f\u67b6\u4e0a\u7684\u5b89\u88c5\u5b54\u5c06\u5176\u56fa\u5b9a\u3002\u786e\u4fdd\u53d8\u538b\u5668\u5b89\u88c5\u7262\u56fa\uff0c\u65e0\u677e\u52a8\u6216\u79fb\u4f4d\u3002\u5b89\u88c5\u8868\u9762\u53ef\u4ee5\u662f\u6c34\u5e73\u7684\u6216\u5782\u76f4\u7684\uff0c\u4f46\u4e0d\u5f97\u5bf9\u94f8\u9020\u4f53\u65bd\u52a0\u4e0d\u5747\u5300\u7684\u673a\u68b0\u5e94\u529b\u3002<\/li>\n\n\n\n
                3. Primary conductor installation:<\/strong>
                  \u5c06\u4e09\u6839\u76f8\u7ebf\u671d\u540c\u4e00\u65b9\u5411\u7a7f\u8fc7\u4e2d\u5fc3\u5b54\u3002\u4e09\u76f8\u7535\u7f06\u6216\u6bcd\u7ebf\u5e94\u5c3d\u53ef\u80fd\u540c\u5fc3\u5730\u7a7f\u8fc7\u5b54\u3002\u907f\u514d\u5bfc\u4f53\u4e0e\u5b54\u58c1\u76f4\u63a5\u63a5\u89e6\u3002\u5728\u5b89\u88c5\u7535\u7f06\u6216\u6bcd\u7ebf\u65f6\uff0c\u8bf7\u52ff\u522e\u4f24\u6216\u635f\u574f\u5b54\u5185\u7684\u7edd\u7f18\u8868\u9762\u3002<\/li>\n\n\n\n
                4. Cable earthing arrangement:<\/strong>
                  \u5728\u91c7\u7528\u5c4f\u853d\u7535\u7f06\u7684\u573a\u5408\uff0c\u7535\u7f06\u62a4\u5957\u63a5\u5730\u5bfc\u4f53\u5fc5\u987b\u6309\u7167\u4fdd\u62a4\u8bbe\u8ba1\u8fdb\u884c\u6577\u8bbe\uff0c\u4ee5\u9632\u6b62\u96f6\u5e8f\u7535\u6d41\u4fe1\u53f7\u7684\u62b5\u6d88\u6216\u8bef\u5224\u3002<\/li>\n\n\n\n
                5. Secondary-side connection:<\/strong>
                  Connect the secondary terminals to the zero-sequence protection relay or low-current earth-fault line-selection device according to the terminal markings. The secondary circuit must never be left open while the monitored primary circuit is energized. One point of the secondary circuit must be reliably earthed.<\/li>\n\n\n\n
                6. Insulation inspection:<\/strong>
                  After installation, measure the insulation resistance between:
                  • Primary conductors and secondary circuit<\/li>
                  • Primary conductors and earth<\/li>
                  • Secondary circuit and earth<\/li><\/ul>\u5728\u8bbe\u5907\u6295\u5165\u4f7f\u7528\u524d\uff0c\u8bf7\u786e\u8ba4\u4e8c\u6b21\u56de\u8def\u8fde\u63a5\u6b63\u786e\u4e14\u672a\u5f00\u8def\u3002<\/li>\n<\/ol>\n\n\n\n

                    \u7ef4\u62a4\u8981\u6c42<\/h3>\n\n\n\n
                      \n
                    • Regularly inspect the epoxy resin body for cracks, damage, discharge marks, and contamination.<\/li>\n\n\n\n
                    • \u68c0\u67e5\u5185\u90e8\u5b54\u5f84\u662f\u5426\u6709\u5f02\u7269\u3001\u78e8\u635f\u6216\u635f\u574f\u3002<\/li>\n\n\n\n
                    • Inspect the secondary terminals for looseness, oxidation, or abnormal heating.<\/li>\n\n\n\n
                    • \u68c0\u67e5\u4e09\u76f8\u7535\u7f06\u6216\u6c47\u6d41\u6392\u662f\u5426\u4e0e\u5185\u90e8\u5b54\u58c1\u63a5\u89e6\u6216\u6469\u64e6\u3002<\/li>\n\n\n\n
                    • \u786e\u8ba4\u4e8c\u6b21\u63a5\u7ebf\u4fdd\u6301\u7262\u56fa\uff0c\u5e76\u4e14\u6ca1\u6709\u8fc7\u70ed\u6216\u53d8\u8272\u7684\u8ff9\u8c61\u3002<\/li>\n\n\n\n
                    • Ensure that the secondary circuit remains closed and reliably earthed.<\/li>\n\n\n\n
                    • Periodically test the insulation resistance and zero-sequence current detection accuracy.<\/li>\n\n\n\n
                    • Verify the correct operation of the connected protection and earth-fault line-selection devices.<\/li>\n\n\n\n
                    • Clean dust and contamination from the transformer surface.<\/li>\n\n\n\n
                    • Keep the aperture free from foreign materials.<\/li>\n\n\n\n
                    • Prevent oil and corrosive substances from contacting the epoxy resin body.<\/li>\n\n\n\n
                    • \u5982\u679c\u68c0\u6d4b\u5230\u5f00\u88c2\u3001\u653e\u7535\u3001\u8fc7\u70ed\u3001\u6d4b\u91cf\u7cbe\u5ea6\u5f02\u5e38\u6216\u4e8c\u6b21\u56de\u8def\u6545\u969c\uff0c\u8bf7\u7acb\u5373\u65ad\u5f00\u7535\u6e90\u5e76\u68c0\u67e5\u8bbe\u5907\u3002\u5fc5\u8981\u65f6\u66f4\u6362\u53d8\u538b\u5668\u3002<\/li>\n<\/ul>\n\n\n\n

                      \u6ce8\u610f\u4e8b\u9879<\/h2>\n\n\n\n
                        \n
                      1. The secondary winding must never be left open while the monitored primary circuit is energized. An open secondary circuit may generate hazardous overvoltage and create a serious risk to equipment and personnel.<\/li>\n\n\n\n
                      2. During maintenance, the secondary circuit must be securely short-circuited and earthed before disconnection.<\/li>\n\n\n\n
                      3. \u8fd0\u8f93\u548c\u5b89\u88c5\u8fc7\u7a0b\u4e2d\uff0c\u907f\u514d\u4e0e\u73af\u6c27\u6811\u8102\u672c\u4f53\u548c\u5185\u90e8\u5b54\u5f84\u53d1\u751f\u649e\u51fb\u6216\u78b0\u649e\u3002\u673a\u68b0\u635f\u4f24\u53ef\u80fd\u4f1a\u964d\u4f4e\u7edd\u7f18\u6027\u80fd\u6216\u6539\u53d8\u5b54\u5f84\u5c3a\u5bf8\u3002<\/li>\n\n\n\n
                      4. \u5b89\u88c5\u7535\u7f06\u6216\u6bcd\u7ebf\u65f6\uff0c\u8bf7\u52ff\u522e\u4f24\u5b54\u5185\u7684\u7edd\u7f18\u8868\u9762\u3002<\/li>\n\n\n\n
                      5. \u4e09\u76f8\u5bfc\u4f53\u5fc5\u987b\u540c\u5411\u7a7f\u8fc7\u53d8\u538b\u5668\uff0c\u5e76\u4e14\u5e94\u540c\u5fc3\u5730\u5e03\u7f6e\u5728\u5b54\u7684\u5185\u90e8\u3002<\/li>\n\n\n\n
                      6. \u9009\u62e9\u9002\u5408\u7535\u7f06\u675f\u6216\u6bcd\u7ebf\u5e03\u7f6e\u5916\u5f62\u5c3a\u5bf8\u7684\u5b54\u5f84\u3002\u5207\u52ff\u5c06\u8fc7\u5927\u7684\u5bfc\u4f53\u5f3a\u884c\u7a7f\u8fc7\u5b54\u5f84\u3002<\/li>\n\n\n\n
                      7. \u5728\u8fd0\u884c\u8fc7\u7a0b\u4e2d\uff0c\u9632\u6b62\u7535\u7f06\u6216\u6c47\u6d41\u6392\u5728\u5b54\u53e3\u58c1\u5904\u79fb\u52a8\u548c\u6469\u64e6\uff0c\u4ee5\u514d\u635f\u574f\u7edd\u7f18\u5c42\uff0c\u9020\u6210\u653e\u7535\u6216\u77ed\u8def\u98ce\u9669\u3002<\/li>\n\n\n\n
                      8. The equipment must be reliably earthed. The grounding terminal on the mounting bracket must be securely connected to the switchgear grounding busbar.<\/li>\n\n\n\n
                      9. Store the product in a dry, ventilated, and shaded environment. Avoid direct sunlight, high temperatures, moisture, compression, and mechanical impact.<\/li>\n\n\n\n
                      10. Installation, commissioning, and maintenance must be carried out by qualified electrical personnel in accordance with applicable electrical safety procedures.<\/li>\n<\/ol>\n\n\n\n

                        \u6807\u51c6\u4f9b\u5e94\u6e05\u5355<\/h2>\n\n\n\n
                        \u4e0d\u3002<\/th>\u7269\u54c1<\/th>\u529f\u80fd<\/th><\/tr><\/thead>
                        1<\/td>LXK-80\u2013300 Zero-Sequence Current Transformer<\/td>Main device for zero-sequence current transformation, electrical isolation, and signal acquisition<\/td><\/tr>
                        2<\/td>\u5b89\u88c5\u87ba\u6813\u548c\u57ab\u5708<\/td>Used to secure the transformer during installation<\/td><\/tr>
                        3<\/td>\u900f\u660e\u526f\u7aef\u5b50\u76d6<\/td>Protects the secondary terminals and helps prevent incorrect connection or short circuits<\/td><\/tr>
                        4<\/td>Product Instruction Manual<\/td>\u63d0\u4f9b\u5b89\u88c5\u3001\u64cd\u4f5c\u3001\u7ef4\u62a4\u548c\u5bfc\u7ebf\u5e03\u7ebf\u6307\u5357<\/td><\/tr>
                        5<\/td>Product Certificate and Factory Test Report<\/td>\u63d0\u4f9b\u4ea7\u54c1\u8d28\u91cf\u548c\u6027\u80fd\u6587\u6863\uff0c\u5305\u62ec\u6bd4\u4f8b\u3001\u51c6\u786e\u5ea6\u548c\u7075\u654f\u5ea6\u6d4b\u8bd5\u6570\u636e<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

                        Applicable Standards and Certification<\/h2>\n\n\n\n

                        The product complies with the following standards:<\/p>\n\n\n\n

                          \n
                        • GB 1208, Current Transformers<\/em><\/li>\n\n\n\n
                        • GB\/T 20840.1, Instrument Transformers\u2014Part 1: General Requirements<\/em><\/li>\n\n\n\n
                        • GB\/T 20840.2, Instrument Transformers\u2014Part 2: Additional Requirements for Current Transformers<\/em><\/li>\n\n\n\n
                        • DL\/T 866, Code for Selection and Calculation of Current Transformers and Voltage Transformers<\/em><\/li>\n<\/ul>\n\n\n\n

                          \u8be5\u4ea7\u54c1\u5df2\u901a\u8fc7\u9002\u7528\u7684\u578b\u5f0f\u8bd5\u9a8c\uff0c\u5176\u6027\u80fd\u6ee1\u8db3\u5ba4\u518510\u5343\u4f0f\u548c35\u5343\u4f0f\u7535\u529b\u7cfb\u7edf\u5bf9\u5730\u6545\u969c\u4fdd\u62a4\u7684\u8981\u6c42\u3002<\/p>\n\n\n\n

                          \"LXK-80\u2013300<\/figure>\n\n
                          \n\n\t\t\n
                            \n\t\t\t <\/ul>\n <\/div>","protected":false},"excerpt":{"rendered":"

                            Product Overview The LXK-80\u2013300 Zero-Sequence Current Transformer is an epoxy resin cast current transformer designed for indoor 10 kV and […]<\/p>\n","protected":false},"featured_media":2575,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_category":[30],"class_list":["post-1637","products","type-products","status-publish","has-post-thumbnail","hentry","product_category-instrument-transformer-series"],"acf":{"products_imagines":[2575],"short_describe":"

                            The LXK-80–300 Zero-Sequence Current Transformer is an epoxy resin cast current transformer designed for indoor 10 kV and 35 kV AC power systems.<\/span><\/p>","pdf_file":"","related_products":{"products":""},"technical_parameter":"","outline_and_installation_dimension":""},"_links":{"self":[{"href":"https:\/\/yieou.com\/zh\/wp-json\/wp\/v2\/products\/1637","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yieou.com\/zh\/wp-json\/wp\/v2\/products"}],"about":[{"href":"https:\/\/yieou.com\/zh\/wp-json\/wp\/v2\/types\/products"}],"acf:attachment":[{"embeddable":true,"href":"https:\/\/yieou.com\/zh\/wp-json\/wp\/v2\/media\/2575"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yieou.com\/zh\/wp-json\/wp\/v2\/media\/2575"}],"wp:attachment":[{"href":"https:\/\/yieou.com\/zh\/wp-json\/wp\/v2\/media?parent=1637"}],"wp:term":[{"taxonomy":"product_category","embeddable":true,"href":"https:\/\/yieou.com\/zh\/wp-json\/wp\/v2\/product_category?post=1637"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}