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目的了解电力机车的工频电场情况。方法用工频场强仪测定昆明铁路局管内各种运行状态的电力机车的工频电场强度,以各型内燃机车为对照。结果各型机车运行及停靠铁路接触网下时,机车驾驶室、两侧窗外、机器间工频电场强度的差异均有统计学意义(P＜0．01),内燃机车脱离铁路接触网后则不存在工频电场。结论电力机车驾驶室内存在着强度很低的分布不均匀的变化的工频电场,该工频电场来自于接触网,必须对其可能造成的职业危害进行研究。
Objective To understand the power frequency electric field of electric locomotives. Methods The power frequency electric field strength of electric locomotive in various operating conditions in Kunming Railway Administration was measured by power frequency field strength meter and compared with various types of diesel locomotives. Results When the locomotives of various locomotives operated and docked under the contact with railway, the difference of power frequency electric field strength between the locomotive cab and both sides of the locomotive was statistically significant (P <0.01). After the diesel locomotive broke away from the railway catenary There is no power frequency electric field. Conclusion There is a low-frequency power frequency electric field distributed unevenly in the cab of electric locomotive. The power frequency electric field comes from the catenary network, and the occupational hazards that it may cause should be studied.