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MC07A011-5A3-4-00

由于电子式电能表比感应式电能表准确度高、功耗低、起动电流小、负载范围宽、无机械磨损等诸多优点，越来越广泛地应用。但目前市场上电子式电能表厂家繁多，质量参差不齐，选择不好，不仅不能发挥电子式电能表的优点，反而会带来不应有的损失和增加维护管理的工作量。电子式电能表与我们熟悉的感应式电能表(俗称机械表)，既有相同的地方，也有不相同的地方，且不同的地方更多，特别是表的内部，感应式电能表是采用电磁感应元件，里面是铁芯、铁圈加机械传动装置;而电子式电能表则主要是采用电子元件，即：电阻、电容加集成电路等。因此，应根据电子式电能表的这一特性来进行选择。换句话说要以电子设备的技术要求进行选择，而不能简单的照搬以前选用机械式电能表的技术要求选择电子式电能表(当然，也有可以借鉴的地方)。现就我们在工作中体会，谈谈单相电子式电能表的选购，供有关的工作人员参考。能表是属国家强制检验计量器具，根据计量法规定，所选电能表必须具有省级以上技术监督局颁发的制造计量器具许可证(CMC证)。这是电能表生产厂家所必须具备的条件和必须履行的法律手续。它可以证明厂家具备了基本的设施、人员和检测仪器设备，是可以生产销售的产品。但是在目前市场竞争激烈的情况下，供电企业有更大的选择余地，因此，还可以多比较一下其他证明产品质量的文件。如：权威部门的鉴定报告、寿命试验报告、被列入国家经贸委”全国城乡电网建设与改造所需设备产品及生产企业推荐目录”、ISO9000质量认证等等。这些都是证明产品质量的重要文件。由于各厂家价格竞争激烈，根据经验仅仅凭这些文件还是不够的，只能证明有了可以选用的基础。下一步就要根据电子式电能表的性能特点、国家检验规程，给合当地电网和气候的实际情况对厂家生产的电能表实物进行检验。

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Nice Allen Bradley 1745-E156 SLC 150 Expansion Unit

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New in Box 1745-M1 Allen Bradley SLC 150 1745-M1 N812
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ALLEN BRADLEY 1745-E151 1745E151 SLC 150 EXPANSION UNIT
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ALLEN BRADLEY 1745-E101 SLC 100 Expansion Unit

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Allen Bradley (2) New Ribbon Cables 1745-C3

Allen Bradley SLC 100 Expansion Unit, 1745-E105, Ser C

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Two AB Allen Bradley SCL 150 Expansion Unit 1745E153/A

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Allen Bradley SLC 100 Processor Unit 1745-LP101 control

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AB Allen Bradley SLC 100 Expansiion Unit 1745-E103/A

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Allen Bradley SLC 100 Expansion Unit, 1745-LP101, Ser B

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Allen Bradley SLC 150 Expansion Unit 1745-E153 A SLC150

Allen Bradley SLC 100 Expansion Unit, 1745-E101, Ser A

ALLEN BRADLEY 1745-M1 EEPROM MEMORY MODULE

ALLEN-BRADLEY SLC 150 1745-E151 EXPANSION UNIT SER B

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MC07A011-5A3-4-00

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