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Purpose. Description of construction and basic technical descriptions developed and created in Research & Design Institute «Molniya» of the National Technical University «Kharkiv Polytechnic Institute» high-voltage high-current coaxial disk shunt of type of SC-300M2, allowing reliably to measure the peak-temporal parameters (PTP) of pulses of current of artificial lightning in wide peak and temporal ranges with the integral of their action to 15·10 J/Ohm. Methodology. Electrophysics bases of highvoltage impulsive technique, scientific and technical bases of development and creation of high-voltage high-current pulsive electrical equipment including the powerful generators of current of lightning (GCL), and also measuring methods in discharge circuit of the powerful high-voltage GCL AVP high pulse currents of microand millisecond temporal ranges. Results. Offered and described new construction of measuring high-voltage heavy-current shunt, containing a measuring round disk from stainless steel easily soiled 12Х18Н10Т of thickness of 2 mm and external diameter 80 mm. Experimental a way pulse active resistance of RS≈0,08 mOhm of the indicated measuring disk and on his basis a calculation coefficient transformation is found of SS of coaxial disk shunt of type of SC-300M2, numeral equal in the concerted mode of operations of his coaxial cable line (CCL) SS≈2/RS≈25·10 A/V. It is shown that it is expedient to use this value SS for measuring in the heavy-current discharge circuit of the GCL ATP impulsive Aand repeated impulsive Dcomponent of current of artificial lightning, and also ATP of aperiodic pulse of current of artificial lightning of temporal form 10 μc/350 μc. It is set that taking into account application in the end GCL of shunt of a co-ordinate divizor of voltage with two output coaxial sockets 1:1 (for SSA≈25·10 A/V) and 1:2 (SSC≈12.5·10 A/V) at measuring of ATP intermediate B-, protracted Cand shortened protracted C*component of current of artificial lightning in GCL it is expedient to utillize a numeral value SS for the examined shunt, equal 12.5·10 A/V. Practical approbation and verification of capacity of the improved measuring coaxial disk shunt of type of SC-300M2 is executed in the high-voltage heavycurrent discharge circuit of the powerful GCL, forming on the actively-inductive loading of Aand C*the components of current of artificial lightning with rationed ATP. Originality. Developed and created new high-voltage heavy-current measuring shunt of type of SC-300M2, allowing reliably to register rationed ATP of attenuation sinewave and aperiodic pulses of current of artificial lightning in the circuits of powerful GCL with amplitude to ±220 кА and integral them action to 13.5·10 J/Ohm. On the measuring coaxial disk shunt of type of SC-300M2 from Government Metrology Service of Ukraine the certificate of accordance of the set form is got. Practical value. Application of the created shunt of type of SC-300M2 in composition the high-voltage highcurrent discharge circuits of powerful GCL will allow in a certain measure to improve the metrology providing of tests of aviation and space-rocket technique, and also objects of electrical power engineering on stability to lightning. References 11, figures 4.

elektrotehnìka ì elektromehanìka

COAXIAL DISK SHUNT FOR MEASURING IN THE HEAVY-CURRENT CHAIN OF HIGH-VOLTAGE GENERATOR OF STORM DISCHARGES OF IMPULSES OF CURRENT OF ARTIFICIAL LIGHTNING WITH THE INTEGRAL OF ACTION TO 15•106 J/OHM