We, UMIN TECH manufacturer Portable PR and CT/PT Ratio Error Tester. We design and develop automatic control software utilizing PLC, HMI SCADA Monitoring System in Automation System (Smart Factory) 

Our endless effort in software program design and technology ensures the dominant difference with other suppliers.

3 unique patents in Ratio Error Tester

① Portable Current Transformer exciting current and core characteristics Tester (2020.11.11 Registered) 

② Portable Current Transformer Turn Ration Tester (2020.12.10 Registered)

③ Portable PR and CT/PT Ratio Error Tester (2020.12.17 Registered)

* We have multiple patents pending for registration.

With Constant effort in research and development, we aim to manufacturer the most advanced and convenient Current Transformer tester and PR & CP/PT Ratio Error Tester in the world from Korea.