The microcomputer protection device for three-phase transformers consists of components such as high integration, single-chip microcontroller without bus output, high-precision current and voltage transformer, high insulation strength outlet intermediate relay, and high reliability switch power module. Microcomputer protection devices are mainly used for power plants, substations, distribution stations, etc. with voltage levels of 110KV and below, and can also be used for the protection and measurement of voltage and current in some systems with voltage levels between 70V-220V.
The differential protection device for three-phase transformers is mainly used to protect transformer equipment. The transformer differential protection device should have differential quick break protection and compound ratio differential protection with or without second harmonic braking. It can be used for three side differential current input scenarios (three coil transformers), with complete and powerful acquisition functions for analog and switch values of primary equipment voltage and current. It is equipped with standard RS485 and industrial CAN communication ports, and can achieve protection and measurement functions such as three coil main transformer differential protection, two coil main transformer differential protection, two coil distribution transformer differential protection, and non electric quantity protection through reasonable configuration.
