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The high-voltage generator with inductive energy store and fuses as opening switch that generated series of powerful pulses is considered. It differs from an ordinary generator with inductive store by different cross-section of series copper wires. The parameters of wires are chose from the empirical relations. The generation principle has been tested on the two high-voltage generators with characteristic impedance 2.2 ohm, 4 ohm and with output voltages 140 kV; 420 kV, respectively. Copper wires of diameter 0.1...0.23 mm have been used. Series from 2 to 5 pulses of 100...300 ns duration, 400...1000 kV amplitude and 1-10 GW power have been obtained. Pulses can be both the same and different. Two successive bremsstrahlung radiation pulses have been obtained on devices EMIR-M and IGUR-3. Series power megavolt pulses can be generated with power more 10/sup 11/ W, pulses duration 10/sup -3/...10/sup -6/ s and time interval between them 10/sup -7/...10/sup -5/ s.