TOP 0,66 current transformers are designed for transmission of measuring information signal to measuring devices (ammeters, wattmeters, phase meters, counters) in AC installations with frequency 50 Hz with rated voltage up to 0,66 kV inclusive. TOP 0,66 are used in measurement schemes of low-voltage devices of buildings and constructions, in schemes of transmission and distribution of electric power, including inside other products, and are also intended for commercial metering of electric power.
Transformers have two secondary winding contacts, a transparent cover protecting the secondary winding terminals and a data plate. It is possible to install a seal preventing access to the secondary winding terminals and data plate after installation.
TOP 0,66 are included in the State Register of measuring instruments of the Russian Federation No. 40110-18.
The verification interval is 16 years. TOP 0,66 with nominal primary current from 1 to 250 A are manufactured with built-in busbar.
TOP 0,66 with rated primary current from 300 A to 2000 A can be produced without a busbar,...
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