浅析变压器低压侧出线电缆短路热稳定校验  

Analysis on Short-circuit Thermal Stability Calibration for Outlet Cable from Low Voltage Side of Transformer

作　　者：黄旭 郑孝刚 陈学明 HUANG Xu;ZHENG Xiaogang;CHEN Xueming(SINOPHARM Chongqing Pharmaceutical and Medical Industry Design Institute Corporation,Chongqing 400039,China)

机构地区：[1]国药集团重庆医药设计院有限公司

出　　处：《现代建筑电气》2019年第7期19-22,33,共5页Modern Architecture Electric

摘　　要：基于电缆短路热稳定校验的原理,分析了影响电缆短路热稳定校验的各种因素,根据3款塑壳断路器各自的产品特性曲线及参数,进行电缆的短路热稳定校验,另进行一组不考虑断路器限制短路能量特性时的短路热稳定校验,结合计算结果,分析了设计中如何保证变压器低压侧出线电缆截面满足短路热稳定的要求。Based on the principle of short-circuit thermal stability calibration of cable,the various factors affecting the short-circuit thermal stability of cables were analyzed.The calibration of short-circuit thermal stability of cables was carried out according to the product characteristic curve and parameters of three different kinds of moulded case circuit breaker(MCCB).In addition,the short-circuit thermal stability calibration was carried out without considering MCCB.Through the calculation results,the outlet cable section from low voltage side of transformer was analyzed,in order to meet the requirements of short-circuit thermal stability.

关 键 词：热稳定校验 断路器 短路电流 允通能量曲线 

分 类 号：TU852[建筑科学]