Current Transformers Type PA

The PA current transformers are used in electric Hitachi Energy with a system voltage of up to 145 kV and a frequency of 50 Hz.

They are designed using top core current transformer construction. The active elements are located in a hermetic housing inside the head of the transformer. PA current transformers are filled with PCB-free transformer oil.

Top core construction makes it possible to achieve high values of thermal and dynamic short-circuit currents, as well as a broad range of rated primary currents and secondary output windings.

• 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:

• Very low electric energy losses
• Stable measuring accuracy during whole lifespan of the apparatus
• No active parts in insulator
• 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 dates
• Long lifespan of over 25 years