Abstract: Calefaction power admeasure system is used for simulated the quantity heat of satellite-equipment’ in the heat balance experimentation. this system provide hundreds independence power-out, system could manage, cycle-check and record the power of each way of power-out dependent computer, and each power-out could automata by the preprogram curve. Pulse-output Calefaction power admeasure system’s feature is more efficiently, lower cubage and weight then the direct current system, but the pulsate direct current virtual value of current is in difficulty to measure. So we need measure the mean value of current to calculate the value of Calefaction power and adjust the errors.