The license level of power facilities for trial installation (repair and test) is divided into level I, level II, level III, level IV and level v.

Those who have obtained the license for the installation (repair and test) of power facilities of class IV test can engage in the test activities of power facilities with voltage levels below 35 kV. The applicant shall meet the following conditions:

（1） Legal personality and perfect organization,

（2） Net assets of more than 6 million yuan;

（3） The technical director and safety director have more than 3 years of experience in power facility test management, and have primary technical qualification or above in power related majors;

（4） More than 10 professional technical and economic management personnel, including more than 4 professional engineering technicians related to electric power;

（5） There are more than 6 electricians with network operation permit, including more than 2 high-voltage electricians and more than 3 special electricians;

（6） Improve effective safety production organization and system, carry out safety training according to law, and have more than one safety manager;

（7） Fixed business premises with a total area of more than 400 square meters, various professional laboratories and test equipment for testing power facilities with a voltage level of more than 35 kV;

（8） Sound technical archives management system.

Configuration of instruments and meters of power facilities for test (repair and test):

Configuration table of four levels of test: