NMD-801 phase-controlled reactor protection device---suitable for the inter-turn fault protection of medium and high voltage phase-controlled reactors with a voltage level of 10～110KV. At present, the first phase of the park has a total construction area of 190,000 square meters, and it has been fully completed and put into operation in 2015. The park is equipped with advanced equipment and facilities at home and abroad, and the production lines of various products are at the leading level at home and abroad; Nanjing Electric Testing Center is a national laboratory that has obtained CNAS qualification certificates. The test project equipment is fully equipped and can carry out mechanical, thermal and industrial frequency , Corona, steep wave and ion migration and other electrical and mechanical tests, and can meet a full set of voltage tests for products from 10kV to 1100kV.