With working experience, the author has summarized the test methods of short circuit and overload protection of non-inherently short-circuit proof transformer and fail-safe transformer.
作者结合工作心得，对非固有耐短路、无危害式安全变压器的短路和过载保护测试方法进行了总结和归纳。
When electric power coupling transformer at input current is less than rated value, public winding can be also overload.
电力自耦变压器在其输入电流均小于额定值时，其公共绕组也可能过负荷。
The typical load curve which is selected for evaluating the overload ability of traction transformer must be reasonable, it should reflect accurately the operation status of traction transformer.
在评价牵引变压器的过负荷能力时，所选择的典型负荷曲线必须合理，使之能够正确反映线路的牵引变压器运行状况。
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