The range of JSC “ZTR” products includes oil-immersed power transformers, electrical reactors and controlled shunt reactors rated for capacity from 1 MVA up to 1 250 MVA for voltage classes from 10 kV up to 1 150 kV inclusive, purposed for different fields of applications and various climatic and seismic conditions. Individual and nonstandard requirements of the customers as referred to the equipment related to a specified range of the capacities and the voltage class are successfully followed owing to JSC “ZTR” extensive experience in the field of design and production of the unique types of transformers and electrical reactors. Modern technology as well as high-level qualification and experience of design staff is a base for production of high-quality and operationally reliable equipment. Based on the Customer request the apparatus can be equipped with the following: Fire-fighting system. On-line monitoring and diagnostics system. Specialized commissioning and diagnostic equipment.