The National Electrical Product Quality Supervision and Inspection Center (Suzhou Electric Apparatus Research Institute Co., Ltd.) built a 220KV substation network system and a 2×3500MVA impulse generator test power supply system in June+10/October, 2009, and they have been officially put into operation. The central high-pressure laboratory was confirmed by the evaluation team of China National Accreditation Committee for Conformity Assessment (CNAS) on the spot, and its testing ability reached the domestic leading level:

A. high voltage test: 252KV and below (it is estimated that the highest voltage will reach 1000kV in May of 201year).

B. On-off test:12kV/80ka24kV/50ka40.5kV/35kA

C. Temperature rise test: 20,000 A and below.

D. Short-circuit tolerance of power transformer: 220KV/240000MVA and below.

High-voltage laboratory is mainly engaged in product certification testing, quality supervision and inspection, arbitration inspection and various entrusted inspections of high-voltage electrical appliances. The main products for detecting high voltage are:

Power transformers (oil-immersed transformers, dry-type transformers and special transformers), high-voltage switchgear (high-voltage switchgear and control equipment, high-voltage circuit breakers, high-voltage load switches, high-voltage disconnectors, high-voltage contactors and high-voltage fuses), transformers, reactors, capacitors, lightning arresters, insulators, power fittings and overhead lines.