煤矿采区变电所设计(毕业设计)(3)

4.1 选变压器二次总馈电开关 ·························································································· 22 4.2 选分路配电开关 ········································································································· 22 4.3 各配电点起动器的选择 ······························································································ 22 第五章 过流保护整定 ·············································································································· 24

5.1 采区保护措施 ············································································································· 24

5.1.1 采区接地保护措施 ··························································································· 24 5.1.2 采区漏电保护措施 ··························································································· 25 5.1.3 采区变电所的防火措施 ··················································································· 25 5.2 配电点过流保护整定 ································································································· 25

5.2.1 第一配电点过流保护整定 ··············································································· 25 5.2.2 第