Patent ID: 6456094
Filing Date: 2002-09-24
Classification: G01R

Abstract:
A capacitive voltage divider for measuring high voltage pulses with millisecond pulse duration, comprising:a high voltage divider including a first cascade of at least two serially arranged condensers, one of said condensers (C1) being disposed at the high potential end and another condenser (C2) being disposed at the low potential end of the high voltage divider cascade, a signal supply line connected to the voltage end of said first cascade and leading to a measuring device, a measuring voltage divider connected to said other condenser (C2) and consisting of a second cascade of at least first and second serially arranged condensers of which said first condenser (C3) is arranged at the high potential end and the second condenser (C4) is arranged at the low potential end of the second cascade, said second condenser (C4) being connected with its low voltage side also to said signal supply line, an ohmic resistor (R1) arranged in parallel with said first condenser, and a resistance (R2) represented by the input resistance of the measuring device connected to said one and first condensers in a parallel circuit to said second condenser (C4), said ohmic resistor (R1) being so dimensioned that the ratio of the product of the capacity of the condenser (C4) and the resistance value of the resistance R2 to the product of the capacity of the first capacitance (C3) and the resistance value of the one resistor (R1) is between 1.1 and 1.15, that is: 1.1