KR-2000Introduction to Series Distributed Protection Devices

●It is mainly suitable for various power supply systems with voltage levels of 35kV and below. The distributed installation protection device CPU adopts a 32-bit DSP main body, fully localized LCD display, detailed and intuitive information, and easy operation and debugging.

●The protection device records protection action events with time information and maintains power-off status. The device integrates protection, measurement, remote signaling, remote control and other functions. The communication adopts standard RS-485, which is economical and convenient for networking and can directly communicate with monitoring or protection management machines.

●This series mainly includes KR-2110 high-voltage motor protection, KR-2210 high-voltage line protection, KR-2230 high-voltage busbar protection, KR-2310 high-voltage capacitor protection, and KR-2410 high-voltage transformer protection.

Main functions

●Three stage overcurrent protection

●Two stage zero sequence overcurrent protection

●Low voltage protection; overvoltage protection

●Zero sequence voltage protection

●Low cycle protection

●PT disconnection automatic detection

●2-channel central signal contact

●AC/DC anti bounce circuit

●Three phase primary reclosing

●No loss of action records and signal memory in case of power failure

KR-2210Wiring schematic diagram of microcomputer circuit protection and measurement device

Note:

1. The anti bounce circuit is designed according to the voltage division type circuit breaker

2. If it is a trigger operated circuit breaker, our company's dedicated operating circuit or directly introduced into the trip circuit shall be used

When the 2000 series requires remote control operation, the input terminal 3C needs to be connected to the remote control status variable