12.JT-C系列机车信号电源有哪些主要要求？
["\u7b54\uff1a\u7535\u6e90\u5e94\u91c7\u7528\u53cc\u5957\u7535\u6e90\uff0c\u4e00\u5957\u6545\u969c\u65f6\u53e6\u4e00\u5957\u80fd\u4fdd\u8bc1\u7cfb\u7edf\u6b63\u5e38\u5de5\u4f5c\u3002\u989d\u5b9a\u8f93\u5165\u7535\u538bDC110V\u3002\u673a\u8f66\u7535\u6e90\u7535\u538b\u572877\uff5e138V\u8303\u56f4\u5185\u53d8\u5316\uff0c\u7cfb\u7edf\u5e94\u6b63\u5e38\u5de5\u4f5c\u3002"]