| 摘要 |
FIELD: computer engineering.SUBSTANCE: system comprises an input terminal and an output terminal of system, a unit for simulating load current, squaring device, first and second multiplier units, an OR element, first, second, third and fourth operational amplifiers, differentiating circuits, first and second groups of switches, first, second and third groups of scaling resistors, first, second and third feedback resistors, signal lamp, a comparator, first, second and third multipoint switches, first and second input resistors, counter, indicator, decoder, first, second, third and fourth adders, divider unit, timer, devices for setting average value of load current, ambient temperature, nominal long permitted temperature value of current-conducting elements, ambient temperature equal to 20 °C, constant "1".EFFECT: high accuracy of selection of system of current-conducting elements of electrical equipment owing to considering dependence of resistance of current-conducting elements on temperature and, consequently, due to more accurate simulation of temperature change.1 cl, 5 dwg |
