Current Transformers Type PA

A solution for high accuracy measurement of your electric power grid

Outdoor single-phase inductive current transformers type PA72a, PA123a and PA145a are designed to supply measurement and protection systems in electric power grid with the highest voltage of 72.5 kV, 123 kV and 145 kV, respectively, and a frequency of 50 or 60 Hz.

Current transformers type PA72a, PA123a i PA145a are designed using top core 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. 

Applications

• In metering systems for electricity billing
• in the power grid security systems
• in the power grid control systems

Why Hitachi Energy?

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:

• Use of high-quality materials compliant with applicable standards from proven suppliers
• Oil used for impregnation of transformers (according to IEC 60296) does not contain chlorine compounds (PCB)
• Stable measuring accuracy during whole lifespan of the apparatus
• High mechanical and electrical strength
• All parts made of non-corroding materials
• Maintenance free
• Short delivery dates
• Long lifespan of over 25 years

* composite insulator

** other parameter ranges available on request