RET650

The ABB RET650 is a powerful, flexible and reliable transformer protection relay designed to protect all types of transformers. It detects and responds to a wide range of possible transformer faults such as overloads, short circuits, earth faults, overheating, etc., thus protecting the transformer from damage and ensuring safe and stable operation of the power system.

Application Fields
Power system: Used to protect various transformers in the power system, such as power plants, substations, industrial and mining enterprises.
Petrochemical industry: Used to protect transformers in the petrochemical industry.
Metallurgical industry: used to protect transformers in metallurgical industry.

Product Features
High precision: Adopting high-precision measuring components to ensure the accuracy of the protection action.
Fast response: It has the ability to respond quickly to faults and protects the transformer from serious damage.
Strong anti-interference ability: It has good anti-interference ability and is not affected by external electromagnetic interference.

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Main Functions
Transformer differential protection: Highly accurate detection of internal transformer faults, characterized by high sensitivity and low false action rate.
Overload protection: Monitor the transformer load current to prevent the transformer from overheating due to overload.
Short-circuit protection: detect short-circuit faults between transformer windings and cut off the faulty circuit in time.
Ground fault protection: detect transformer winding to ground fault, protect transformer insulation.
Overheating protection: Monitor the transformer oil temperature, winding temperature, etc., to prevent overheating leading to transformer damage.
Harmonic protection: Monitor the harmonic content of the transformer to prevent the harmonic from affecting the life of the transformer.
Gas protection: optional gas protection function, monitoring the gas content in the transformer oil, timely detection of internal faults.

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