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Design and Construction of HV Generators PL9800667 by Ajerzykiewicz, K.Kocie.Cka, J.Witkowski and R.Mirowski

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Design and Construction of HV Generators PL9800667 by Ajerzykiewicz, K.Kocie.Cka, J.Witkowski and R.Mirowski 106 Annual Report 1996 1. HV triggering pulse generators of UI-70 and UI-70a type (shown in Fig.l). They can produce pulses of both polarities, with crest values 30 kV and rise-times of about 300 ns. The UI-70 type is switched on by means of an electrical relay and it is designed especially for triggering trigatrons in simple circuits of the HV generators used mainly in industry. The UI-70a type generator is equipped with a krytron and it will replace the oldest US-4 type pulser within the circuits which should be switched on with a low jitter. Fig.l UI-70a HV triggering generator. 2. A capacitor bank charging unit, consisting of a 0.22/25 kV transformer and a two-stage cascade rectifier. The charged capacitors are placed in the second stage of the rectifier and the capacitance of the first stage capacitor is adjusted to a required charging time. The steady state power of the unit is 2.5 kW, and the highest charging voltage is about 60 kV. 3. Control desks and electrical control systems. They have been adjusted to the use of a motor-driven sliding contact transformer, supplying the charging unit. 4. New 60 kV voltage dividers of the resistive- and capacitive-type have also been developed and tested. [11 AJerzykiewicz and K.Kociecka, Proc. Ill Symposium on HV Engineering IW-96 (Poznan-Kiekrz 1996), p.259. [2] M.Bielik, AJerzykiewicz, K.Kocie.cka and J.Witkowski; ibid, p.274. [3] K.Kociecka , Przegla.d Elektrotechniczny 72 (1996) 149. [4] K.Kociecka, Przegla.d Elektrotechniczny 72 (1996 ) 240. [5] AJerzykiewicz and K.Kociecka, to be published in Proc. of ISTET'97 (Palermo 1997). [6] AJerzykiewicz, K.Kocie,cka and J.Witkowski, SINS Dept. P-V Intern. Report (Otwock-Swierk, 1996). 5.18 Studies of electromagnetic compatibility PL9800666 by AJerzykiewicz, K.Kocie.cka, J.Witkowski Problems connected with the organization of a laboratory, designed for testing the electromagnetic immunity of electronic and electrical equipment, have been analyzed [1-3]. It has been shown that costs of the laboratory stands could be significantly diminished if the basic simulators of interference signals are designed and manufactured at SINS. This conclusion was confirmed by computations of circuits and testing of models for the following simulators: - a surge, high-energy generator, - a damped oscillating pulse generator, - an electrostatic discharges simulator, - a fast transient (burst) generator, - the main drop-out simulator. [1] K.Kocie.cka, AJerzykiewicz and J.Witkowski, Proc. VI Symposium on Applied Electromagnetism in Modern Technics and Technologies (Poraj 1996). [2] A.Jerzykiewicz, K.KociQcka and J.Witkowski, Proc. Seminar on Tests and Certification Problems of Electronic and Electrical Equipment (Jachranka 1996). [3] A.Jerzykiewicz, K.Kociecka and J.Witkowski, SINS Dept. P-V Intern. Report (Otwock-Swierk 1996). 5.19 Design and construction of HV generators PL9800667 by AJerzykiewicz, K.Kocie.cka, J.Witkowski and R.Mirowski Within the framework of research on new HV generators we designed, constructed, and tested different surge generators: 1. New HV pulse generator of the GUs-60 type [1-2]. That generator was designed and built for inducing short-circuiting in power cable lines, according to the order from the Institute of Power Engineering. DEPARTMENT OF PLASMA PHYSICS AND TECHNOLOGY 107 It can produce pulses with 1.2/30 /AS shape on a load that consists of three parallel branches, each including a 0.5 /iF coupling capacitor and a 20 ft tested cable connected in series. The generator can be adapted for two versions of nominal voltage. The technical data are as follows: version I II nominal voltage [kV] 60 50 pulse crest value [kV] 50 40 capacitance [/xF] 2.5 3 energy [kJ] 4.5 3.75 pulse repetition rate 6/min The generator is equipped with two voltage Fig.l OUs 60 Generator. dividers: a resistive one - for measuring the pulse outgoing from the generator, and a capacitive one, for measuring the pulse on the cable impedance. Detailed investigations of the influence of the cable impedance and coupling capacitance on the pulse shape were performed. The view of the generator is shown in Fig.l 2. A surge generator of the GUN-8/1 type [3-4]. That generator has been designed and built according to the order from the ELTEST Laboratory and it will be used for testing of electronic and electric equipment. It can produce pulses of both polarities with 1.2/50/is shape and crest values within the range 0.3 - 6.8 kV on a capacitive load up to 5 nF, according to requirements given in the IEC 60 Publication. A general view of this generator, equipped with an automatic charging voltage regulation system and a pulse counter is shown in Fig. 1. Fig.2 GU-70 Surge generator. 3. A surge generator of the GU-70 type [5-6]. This generator (Fig.2), producing 1.2/50 /AS pulses with the crest value within the range 0.8 - 65 kV, has been put in operation in industry. [1] AJerzykiewicz, J.Witkowski, K.Kocie.cka and R.Mirowski, GUs-60 Generator Design (Swierk 1996). [2] A.Jerzykiewicz, J.Witkowski, K.Kocie.cka and R.Mirowski, GUs-60 Manual (Swierk 1996). [3] A.Jerzykiewicz, J.Witkowski, K.Kocie_cka and R.Mirowski, GUN-8/1 Generator Design (Swierk 1996). [4] A.Jerzykiewicz, J.Witkowski, K.Kocie.cka and R.Mirowski, GUN-8/1 Manual (Swierk 1996). [5] A.Jerzykiewicz, J.Witkowski, K.Kocie.cka and R.Mirowski, GU-70 Generator Design (Swierk 1996). [6] A.Jerzykiewicz, J.Witkowski, K.KociQcka and R.Mirowski, GU-70 Manual (Swierk 1996)..
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