新安装的变压器差动保护在投运前应做哪些试验?
["\u5e94\u505a\u5982\u4e0b\u68c0\u67e5\uff1a\n\uff081\uff09\u8fdb\u884c\u53d8\u538b\u5668\u5145\u7535\u5408\u95f85\u6b21\uff0c\u4ee5\u68c0\u67e5\u5dee\u52a8\u4fdd\u62a4\u8eb2\u52b1\u78c1\u6d8c\u6d41\u7684\u6027\u80fd\uff1b\n\uff082\uff09\u5e26\u4e00\u5b9a\u8d1f\u8377\u540e\u6d4b\u91cf\u5404\u4fa7\u5404\u76f8\u7535\u6d41\u7684\u6709\u6548\u503c\u548c\u76f8\u4f4d\uff0c\u68c0\u67e5\u5916\u90e8\u4ea4\u6d41\u7535\u6d41\u8f93\u5165\u56de\u8def\u63a5\u7ebf\u7684\u6b63\u786e\u6027\uff1b\n\uff083\uff09\u6d4b\u91cf\u6216\u68c0\u67e5\u5dee\u52a8\u4fdd\u62a4\u7684\u5dee\u7535\u538b\uff08\u6216\u5dee\u7535\u6d41\uff09\uff0c\u68c0\u67e5\u88c5\u7f6e\u53ca\u7535\u6d41\u56de\u8def\u63a5\u7ebf\u7684\u6b63\u786e\u6027\u3002\n\uff084\uff09\u77ed\u65f6\u9000\u51fa\u5f85\u68c0\u67e5\u7684\u5dee\u52a8\u4fdd\u62a4\uff0c\u5229\u7528\u5c01\u77ed\u5355\u76f8\u7535\u6d41\u56de\u8def\u7684\u65b9\u6cd5\u68c0\u67e5\u7535\u6d41\u4e2d\u6027\u7ebf\u56de\u8def\u7684\u6b63\u786e\u6027\u3002"]