Please see original news via below link. - This news is written in Korean
Following is excerpted part of the Korean local news.
KIRISS(Korea Research Institute of Standards and Science) & CT-eTECH.Co.,Ltd.(President: Sungha Lee) collaborated in manufacturing new high-precision HV Standard PT and high-precision HV standard CT.
Rated voltage of newly manufactured high-precision HV Standard PTs are 22kV, 66kV and 132kV. Furthermore rated current of high-precision HV standard CTs are 6kA, 12kA, 20kA, 40kA.
HV standard PT is able to drop the Voltage Max. 132,000V to 110V. HV standard CT is able to drop the current Max 40,000A to 5A. So, it makes high-precision power metering possible.
Especially accuracy of HV standard PT is 0.05% and HV standard CT is lesser than 0.005%.
These Standard Transformers are superior in accuracy, stability, smaller size, almost one third weight to existing one and even more 40% cheaper.