This part of IEC 61869 applies to new single-phase capacitor voltage transformers connected
between line and ground for system voltages Um = 72,5 kV at power frequencies from 15 Hz
to 100 Hz. They are intended to supply a low voltage for measurement, control and protective
functions.
The capacitor voltage transformer can be equipped with or without carrier-frequency
accessories for power line carrier-frequency (PLC) application at carrier frequencies from
30 kHz to 500 kHz.
The base requirements for coupling capacitors and capacitors dividers are defined in
IEC 60358. The transmission requirements for coupling devices for power line carrier (PLC)
system are defined in IEC 60481.
The measurement application includes both indication measuring and revenue measuring.