Tong testers acting as secondary windings of current transformers

Full Title

Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00 (constructional details particular to arrangements for measuring the electric consumption G01R11/02) > Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments > Tong testers acting as secondary windings of current transformers