Solid-core current transformer type 'S' with a current ratio of 200/5 and accuracy class of 0.5 at 5 VA. It has a nominal voltage (primary) of 660 VAC at 50/60 Hz. The short time current for type 'S' is 40 kA for 0.5s. It has a dielectric quality of 3 kV/1min and insulation class F (155 deg C). The transformer is cast resin encapsulated and has a degree of protection IP40. It can operate in temperatures ranging from -20 deg C to +80 deg C. The cable diameter opening is 45 mm. This product has been type tested to AS60044.1:2007 and AS1675:1986 standards.