五、额定电压8.7/10kV及以下金属屏蔽监视型软电缆1用途适用于额定电压8.7/10kV及以下的井下移动变压器及类似设备的电源连接。2工作条件2.1额定电压U0/U为3.6/6kV、6/10kV、8.7/10kV。2.2电缆导体的长期允许工作温度为90℃。2.3电缆的***小弯曲半径为电缆直径的6倍。2.4电缆的地线芯必须良好接地。3产品型号见表1。表1型号名称用途MYPTJ-3.6/6煤矿用移动金属屏蔽监视型橡套软电缆额定电压8.7/10kV及以下的井下移动变压器及类似设备的电源连接MYPTJ-6/10MYPTJ-8.7/104电缆规格应符合表2、表3和表4的规定。表2芯数×导体标称截面（mm2）标称厚度（mm）电缆外径（mm）动力线芯地线芯监视线芯动力线芯绝缘内护套1）外护套MYPTJ-3.6/63×253×16/33×2.557.5～63.03×353×16/33×2.562.5～68.63×503×25/33×2.564.9～71.43×703×25/33×2.570.6～76.63×953×35/33×2.575.7～81.73×1203×35/33×2.578.5～85.63×1503×50/33×2.582.2～88.73×1853×70/33×2.586.1～94.31）内护套计算厚度不作考核表3芯数×导体标称截面（mm2）标称厚度（mm）电缆外径（mm）动力线芯地线芯监视线芯动力线芯绝缘内护套1）外护套MYPTJ-6/103×253×16/33×2.565.0～70.53×353×16/33×2.568.0～74.13×503×25/33×2.571.4～77.93×703×25/33×2.574.5～80.53×953×35/33×2.578.5～84.53×1203×35/33×2.585.2～91.73×1503×50/33×2.589.1～95.63×1853×70/33×2.593.5～100.01）内护套计算厚度不作考核表4芯数×导体标称截面（mm2）标称厚度（mm）电缆外径（mm）动力线芯地线芯监视线芯动力线芯绝缘内护套1）外护套MYPTJ-8.7/103×253×16/33×2.577.2～83.43×353×16/33×2.580.2～86.83×503×25/33×2.583.7～90.53×703×25/33×2.586.7～94.63×953×35/33×2.590.8～98.73×1203×35/33×2.593.8～101.93×1503×50/33×2.597.2～105.83×1853×70/33×2.5100.9～109.91）内护套计算厚度不作考核5性能指标应符合表5的规定。表5标称截面（mm2）20℃时导体电阻（Ω/km）不大于动力线芯20℃时绝缘电阻（MΩ·km）不小于监视线芯20℃时绝缘电阻（MΩ·km）不小于额定电压3.6/6kV额定电压6/10kV额定电压8.7/10kV250.795—8009505350.565—7008505500.393—6007505700.2774505506505950.21040050060051200.16435045055051500.13230040050051850.1082803504505)