The loading capability of a 500 kV high-voltage DC (HVDC) transformer bushing is calculated with some unusual conditions: the internal oil circulation in the bushing is blocked at the flange level and the ambient air temperature is raised to 60 degrees C. The theoretical model was verified with a full-scale heat run test on a 7.8 m long bushing. A 220 m/sup 3/ insulated test chamber was required to enclose the test set-up.
展开▼
机译：500 kV高压直流（HVDC）变压器套管的负载能力是在某些异常条件下计算得出的：套管中的内部油循环在法兰高度处受阻，环境空气温度升高至60摄氏度。理论上该模型在7.8 m长的衬套上进行了全面的热运行测试。需要一个220 m / sup 3 /绝缘测试室来封闭测试装置。
展开▼
