CxxxR-xx

PRODUCT DESCRIPTION

This combined system utilizes a special additional capacitive tap at the bushing to measure voltage. The GWP sensor system is adaptable to any C-tap value inside the bushing. It sets itself, in an automatic process at the factory of the GIS-switchgear, to a preconfigured ratio and delivers a standard output acc. IEC61869-11 of 3,25V/√3. During the operation and after installation, no additional calibration is needed. The system actively compensates influences from temperature and neighbour fields, thus makes it possible to reach 0.5 accuracy class acc. IEC standard. The system is combined with 3 current sensors, which allows for a highly cost-efficient design.

PRODUCT ADVANTAGES

• Combined voltage and current measurement directly at the bushing
• The system can be installed and connected to IED´s at the switchgear manufacturer´s site. No installation at site (cone type sensors) needed
• System calibrates itself during the installation process at the switchgear manufacturer
• Output of the system is not burden dependent
• Galvanic separation, through the usage of a capacitive divider
• Hardware compensation inside the device, no need of
  correction factors
• According to IEC 61869-1, -10, -11
• Active temperature compensation of the C-tap of the bushing