SPLIT-CORE OUTDOOR ROGOWSKI COIL CURRENT TRANSFORMER
Conventional split-core outdoor Rogowski coil CT has the inherent problem of coil inductance tolerance, requiring additional software coding at the smart meter or transformer monitor to match the CT’s output. This problem causes inconvenience and extra cost because of the additional set up and configuration time at the meter or monitor, as well as additional configuration time when changing the rated current or installing a distribution transformer at a later point.
In addition, the conventional split-core outdoor Rogowski coil CT accuracy is sensitive to magnetic fields. In contrast, J&D’s new split-core outdoor Rogowski coil CTs, together with the built-in integrator, do not require a change to both the meter or monitor and the CT, but rather only the CT according to the rated current. In addition to this important advantage, the JRF MOI is more accurate than conventional Rogowski coil CTs and resistant to external magnetic fields.
Users would like to adopt IP(International protection) code for protection standard from external environment, but it can’t be utilized to evaluate perfect protection for CT’s electrical property and durability. We should use Split-core CT with protection housing to reduce bad property variation from external affection of outside in safe way.