DISEÑO Y OPTIMIZACIÓN DEL SISTEMA DE CONTROL Y FUERZA PARA PRUEBAS DE VACÍO Y CORTOCIRCUITO EN FORMA PARALELA DE TRANSFORMADORES MONOFÁSICOS Y TRIFÁSICOS DE DISTRIBUCIÓN MEDIDO EN MODO DIRECTO E INDIRECTO MEDIANTE EL USO DEL ION 7650, HIPOTRONIC Y LOGO

Abstract

The design is an improvement of a general control system that unifies the electrical testing of No-load losses and Short-Circuit of distribution transformers to operate manually and automatically, whose electrical control are operated for a maximum of fourteen single-phase transformers padmounted, conventional and CSP type, all of them operating from a single connection, without the operator having to leave the control test room and to connect the next transformer. This occurs because they are all connected in parallel to the electric panel so that when the test is performed either without load or short-Circuit, each transformer is tested in an automatic sequence. To design the control system of the automatic programming sequence the micro-PLC Siemens LOGO is used, with the energy analyzer called ION7650 allows to perform measurements directly and indirectly in conjunction with the respective CTs and PTs. The internal control circuit is redesigned of HIPOTRONIC machine, this is a variable autotransformer, allowing to regulate the supply voltage necessary to test single-phase and three-phase transformers. The control system is programmed in ladder language through micro PLC, the system interacts with the operator via a user-friendly interface through TD LOGO screen.