KR-3700Introduction to Generator Protection Measurement and Control Device

●The KR-3700 series microcomputer based generator protection device is mainly suitable for various types of steam turbine generator units and hydro turbine generator units with a single unit capacity of less than 300MW, and can also be applied to the protection of large synchronous motor units

●The complete protection device integrates multiple network interfaces and communication protocols to meet the various networking needs of plant automation

●The input and output signals of the complete set of protective devices can be programmed and configured to meet various needs for upgrading and renovating old factories and stations

●The KR-3700 series microcomputer complete generator protection device consists of the main generator protection device KR-3710, the backup generator protection device KR-3720, and the non electricity and operation circuit KR-CZ device of the generator

Main functions

●Generator longitudinal current differential protection

●Sensitivity current transverse difference of individual components (when branching out)

●Vertical zero sequence voltage protection (when equipped with dedicated zero sequence PT)

●Fundamental zero sequence voltage protection (when equipped with a dedicated zero sequence PT)

●Two sets of non electric delay protection

●Third harmonic zero sequence overvoltage protection

●PT disconnection and CT disconnection protection

●Ping Pong Switching Relay One point Grounding and Rotor Two point Grounding Protection

KR-3720Terminal diagram of generator main protection measurement and control device