Sensors based on alternative principles have been introduced as successors to conventional instrument transformers in order to significantly reduce size, increase safety, and to provide greater rating standardization and a wider functionality range.
The current sensor is based on the principle of the Rogowski-coil. The sensor consists of an air-core winding, immune of any risk of saturation as it has no ferromagnetic core. It is linear over the whole measuring range.
The voltage sensor is based on a capacitive divider. Also this sensor is non-saturable and linear over the whole measuring range. In the combi sensors a coupling electrode is integrated in the same compact cast resin part.
Product scope
up to 630 A
KEVCY 24 RE1 up to 24 kV, voltage measurement, voltage indication, current measurement
KEVCY 24 RF1 up to 24 kV, voltage measurement, voltage indication
KEVCY 36 RE1 up to 36 kV, voltage measurement, voltage indication, current measurement
KEVCY 40.5 RE1 up to 40.5 kV, voltage measurement, voltage indication, current measurement
Application
Secondary gas insulated switchgear (GIS)
Ring Main Units (RMU)
Key benefits
- Design optimized for application
- Small dimensions, light weight
- Fast and easy design process
- High flexibility
- Minimize cost during operation
- Increase safety and reliability
Key features
- Up to 630 A and 40.5 kV
- High accuracy up to 0.5
- Delivered with secondary cable and RJ45 connector
- High linearity
- Large dynamic range
- No ferroresonance