Inductive Voltage Transformer Type PV

The PV voltage instrument transformers are used in electric Hitachi Energy with a system voltage of up to 123 kV and a frequency of 50 Hz.

This voltage transformer contains a high voltage coil, secondary windings and a core encapsulated in hermetic housing filled with PCB-free transformer oil.

The transformer’s stainless steel expansion bellows is fixed to the head and shielded with aluminum cover. The expansion bellows compensate for thermal changes in oil volume.
 

• Installed in grids with insulated or effectively earthed neutral point and in resonant earthed systems
• Revenue metering
• Control
• Indication
• Relay protection

Hitachi Energy has developed a state-of-the-art design to provide benefits to our users for better electrical performance, improved environmental withstand and a long trouble-free life. This is accomplished with:

• Low no-load losses due to use of oriented transformer steel
• Resistance to ferromagnetic resonance in broad capacity range
• Stable measuring accuracy during whole lifespan of the apparatus
• Excellent control of electric stresses that excludes possibility of primary insulation puncture
• Excellent insulation strength in transient conditions
• All parts made of non-corroding materials
• Maintenance free
• Short delivery times
• Lifespan of over 25 years.