The utility model belongs to the power equipment field, concretely relates to radar distribution extension system. This system includes a UPS connector, first spare connector, the spare connector of second, the 2nd UPS connector, commercial power or power station connector, arrester, air circuit breaker, hour meter, digital voltmeter and signal lamp. The utility model discloses good and the application scope of job stabilization nature is wide, and can regard as the power with double -phase commercial power or double -phase oil machine electricity generation power, through current mode change and rational distribution after to carry out the purpose that the electric quantity was supplied with realize for whole radar or a certain cabinet system of radar, the normal function of maintaining the radar that finally can be effective and reliable.