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

●Two stage timed composite voltage lockout overcurrent protection (with memory)

●Generator definite/inverse time overload protection

●Zero sequence overcurrent and zero sequence overvoltage protection (with zero sequence power direction)

●Generator overvoltage protection

●Generator low voltage disconnection protection

●Generator reverse power protection

●Generator high-frequency cutting protection

●Generator low-frequency disconnection protection

●Generator demagnetization impedance protection

●PT disconnection and CT disconnection protection

●Two sets of non electric delay protection

KR-3710Terminal diagram of generator backup protection measurement and control device