Capacitive voltage transformers in oil-paper insulation

Application

Arteche capacitive voltage transformers in oil-paper insulation isolate measuring instruments from the power supply circuit and reduce voltage in high-voltage lines. Additionally, they are used to transmit high-frequency signals through high-voltage lines. They are available in versions operating at voltages up to 170 kV (DDB model) or up to 800 kV (DFK model). They are also suitable for all special requirements, including installation at measuring points that require utmost precision.

Product inquiry

Working conditions Advantages Electrical data Mechanical data

Capacitive voltage transformers and coupling capacitors are designed for indoor and outdoor use. Thanks to the materials they are made of and high-quality construction, they also perform well in extreme weather conditions and temperatures ranging from -55°C to +55°C. They can operate at altitudes above 1000 m above sea level, in areas prone to seismic activity, and in strong winds.

Very high accuracy class and constant capacity over time
Safe ferroresonance suppression system without affecting the accuracy of secondary parameters
Hermetically sealed construction ensuring complete water resistance
Compact design with solid mechanical strength
Oil level compensation system regulating oil quantity changes
Maintenance-free operation throughout the entire service life
Recyclable materials, compliant with environmental regulations
High-quality PCB-free insulating oils
Pressure relief valve for maximum protection
Each device individually tested for partial discharges, tangent delta, and accuracy
Compliance with all international standards: IEC, IEEE, UNE, BS, VDE, SS, CAN, AS, NBR, JIS, GOST, NF

Line discharge class according to IEC (100 VA)

Class 0.2 / 3P

Line discharge class according to IEC (250 VA)

Class 0.5 / 3P

Line discharge class according to IEEE

0.3 WXYZ / 1.2 WXYZ, ZZ

Maximum operating voltage

72.5–800 kV

Rated insulation level – Power frequency

140–975 kV

Rated insulation level – Lightning impulse (BIL)

325–2,100 kVp