Improvement of the Control Relay Blocks in the Electrical Centralization and Control System Based on Modern Elements

In this article, control relay blocks in the electrical centralization and control system are improved based on modern and non-contact elements. The electrical scheme of the improved block was created. The circuit consists of an insulated gate transistor (IGBT refers to insulated gate transistor), a DC/DC converter, an optotransistor and other elements. In order to increase the reliability of the block, 2 transistors were used for the current contacts of each circuit and they were connected in series. Optotransistors were used for reliable control of transistors. The developed block was installed and tested in place of the neutral large-size plug-in block (NMSh1-400 refers to neutral large-size plug-in block) in the executive P-62 and MI, MII, MIII blocks of the electrical centralization system. The volt-ampere characteristics of the created unit are obtained, resulting in an electrical centering system.