Combined Current and Voltage Transformer
The KOTEF is designed to provide both current and voltage measurements from a single device. It utilizes the same components as the individual CTs and VTs. Both transformers are combined in a single insulator and are available in porcelain or composite.
Main Characteristics
- Un: 72.5 to 420 kV
- Oil expansion by stainless steel diaphragm bellows
- Oil level indicator
- Secondary cores in aluminum box
- Changing of primary ratio by primary series-parallel connection (double or triple ratio) or by secondary taps
- Compliance with IEC, ANSI/IEEE or equivalent standards
- Paper oil insulation
- AREVA T&D is the only manufacturer of 420 kV combined metering unit
Key Benefits
- Excellent solution for adding metering capability to either a new substation installation or a site being upgraded where space is at a premium
- Price advantage
- Space saving: only one base
- Cost savings on transportation and assembly
- Maintenance free
- Protection against bursting
