Patent ID: 6653928
Filing Date: 2003-11-25
Classification: G01R

Abstract:
A dry load test apparatus comprising:multi-stage resistor bodies (42, 43, 44) for high voltage load test comprising a plurality of flat shaped resistor assemblies (Ri, Si, Ti) each including elongate resistor elements (r, j) spaced apart in a plane and connected mutually end to end in series through electrically conductive connection pieces (58aj, 58bj-1), said resistor assemblies arranged in columns such that the flat shape surfaces are parallel and in parallel multi-stages which are spaced apart with respect to each other, said connection pieces comprising electrically conductive connection pieces (58aj, 58bj-1) arranged in columns; a pair of isolation plates (67, 68) arranged on opposite sides of each of said resistor bodies to sandwich said resistor bodies therebetween; first switching members (SWbi1) arranged in columns, said members being attached to surfaces of said isolation plates (67, 68) on a side opposite to said resistor bodies, each being connected at one end to ends (F) of said resistor elements to which said electrically conductive connection pieces are not connected; multi-stages of second switching members (SWaij, SWbij) arranged in switching member columns (SWai, SWbi), said second switching members being attached to surfaces of said isolation plates (67, 68) on a side opposite to said resistor bodies, each being connected at one end to each electrically conductive connection pieces (58aj, 58bj-1) of said electrically conductive connection piece columns; a plurality of first conductive members (Caj, Cbj) for connecting mutually the other ends of said second switching members (SWaij, SWbij) of said switching member columns; a plurality of second conductive members (Cb1) for connecting mutually the other end of said first switching members (SWbi1); a plurality of third conductive members (Cb(m/2)+1) connected with ends (E) of said resistor elements to which said electrically conductive connection pieces are not attached; high voltage switches connected to said third conductive members (Cb(m/2)+1); and an electric conduction control circuit (84) for ON-OFF controlling said second switching members (SWaij, SWbij).