关于电力设备的短路电流耐受能力及限流措施 - Shanxi Blue River Electrical Engineering Co., Ltd.

Shanxi Lanhe Electronic Engineering Co., Ltd.

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10kV Short Circuit Current Limiter

Release time: 2018 - 04 - 28

DDX1-12 Rated electrical parameters of products：numberParameter nameUnitTechnical Data1Rated voltagekV122Rated currentA630-63003Rated pre-expected short-circuit breaking currentkA50-2004Current limit coefficient = cut-off current / the peak Value of Pre-expected Fault Current%15~505Insulation levelPower frequency withstand voltagekV/1min42Lightning impulse withstand voltagekV75Product Characteristics and advantages◆ Strong short-circuit breaking capability ( large capacity ): rated breaking short-circuit current is 50kA～200kA◆ Breaking speed is fast ( high speed ) :Total breaking d...

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35kV Short Circuit Current Limiter

Release time: 2018 - 04 - 25

DDX1-12 Rated electrical parameters of products：numberParameter nameUnitTechnical date1Rated voltagekV40.52Rated currentA630-63003Rated pre-expected short-circuit breaking currentkA50-2004Current limit coefficient = cut-off current / the peak Value of Pre-expected Fault Current%15~505Insulation levelPower frequency withstand voltagekV/1min95Lightning impulse withstand voltagekV185Product features and advantages◆Strong short-circuit breaking capability ( large capacity ): rated breaking short-circuit current is 50kA～200kA◆Breaking speed is fast (High speed): Total breaking duration:◆The b...

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Intelligent integrated dehumidification system in LH100 substation

Release time: 2018 - 04 - 28

Basic technical principles:Intelligent integrated dehumidification system in LH100 substation adopts digital transmitter array of temperature and humidity to monitor the indoor, cable trench and outdoor average temperature and the humidity of the distribution room. Based on the data, air moisture content ( water vapor partial pressure ) and dew point temperature are calculated by the algorithm recommended by the World Meteorological Organization and the national military standard GJB1172.1. The above-mentioned basic data and calculation data are the basis for the power distribution and control...

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Intelligent wireless temperature measuring system in LH200C substation

Release time: 2018 - 04 - 28

Product overviewProduct features and advantages:◆ One set of devices can manage up to 99 switch cabinets at the same time.◆ One switch cabinet can be equipped with 12 temperature measuring points and monitored at the same time.◆ Flexible combination of double temperature measuring probes improves temperature measuring efficiency.◆ The contact temperature measurement design is adopted, and the temperature measurement accuracy reaches ±2℃.◆ The open-loop CT energy and high-energy battery two-in-one power supply is adopted，intelligently select the power supply mode.◆...

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LH300 Integrated Protection Device of Arc Light

Release time: 2018 - 04 - 28

Product characteristics and advantages：◆ The electronic System is simple and efficient◆Arc light detectors have a wide range, high sensitivity and large wide-angle photosensitive probe◆ Precision arc recognition and positioning technology◆ Original current algorithm can identify the fault current as quick as possible◆ Highly flexible criterion, reliable and fast action.◆ Flexible configuration and strong adaptability:◆ Low cost and high profit◆ The life cycle of the switch cabinet is effectively prolonged◆Ensure personnel safety◆Reduce equipment damageProduct...

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