A Hierarchical Fuzzy Comprehensive Evaluation Algorithm for Running State of a 6 kV (10 kV) Power Switch Cabinet

<table class="fixed-width table-group" id="tab7"><tr><td><table class="table"><colgroup><col style="width:18.91em"/><col style="width:6.13em"/><col style="width:18.24em"/><col style="width:3.79em"/></colgroup><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Circuit breaker type</td><td class="align_center">ZN28(A)-12</td><td class="align_center">Rated voltage</td><td class="align_center">10 kV</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Rated short circuit breaking current (kA)</td><td class="align_center">20</td><td class="align_center">Rated short circuit peak withstand current</td><td class="align_center">20~50</td></tr><tr><td class="align_left">Mechanical life (times)</td><td class="align_center">10000</td><td class="align_center">Spring mechanism type</td><td class="align_center">CT19</td></tr><tr><td class="align_left">Three phase switch in different periods (ms)</td><td class="align_center">≤2.0</td><td class="align_center">Switching time</td><td class="align_center">20~50</td></tr><tr><td class="align_left">Bounce time of closing contact (ms)</td><td class="align_center">≤2.0</td><td class="align_center">Closing time</td><td class="align_center">50~70</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Technical parameters of vacuum circuit breaker.</div>

Mathematical Problems in Engineering

tab7

Table 7

Table 7: A Hierarchical Fuzzy Comprehensive Evaluation Algorithm for Running State of a 6 kV (10 kV) Power Switch Cabinet 