The CKPM301 microcomputer protection device adopts a high-integration, bus-out-chip microprocessor to process the signals from the current and voltage transformers, and control the output of the device through digital logic operations. The device has a compact structure, a sealed case, maintenance-free design, and good anti-interference performance. It is very suitable for the ring network cabinet system with harsh operating environment and limited installation positions.

Features

Stable performance; the whole machine adopts extremely low power consumption design technology to ensure that the protection function can be started reliably and quickly under any conditions. High-precision components and processes ensure the accuracy, reliability and long service life of the device. 

The structure is simple; the device structure is simple and compact, the installation is convenient and flexible, and it is suitable for the compact installation conditions of the ring network cabinet. 

Flexible configuration; flexible and complete protection configuration, various protection functions can be switched on and off through software; RS-232 and RS-485 communication bus interfaces are provided, and open communication protocols are provided to users to facilitate the realization of SCADA. 

Stable performance; phase-to-phase inverse-time overcurrent protection and zero-sequence inverse-time overcurrent protection selected from five IEC standard inverse-time curves. 

Comprehensive measurement and control; complete measurement and control functions, which can measure electrical parameters such as voltage and current; provide special remote control relays to realize remote control functions; have 6 switch input circuits. 

LCD interface; using all Chinese LCD display interface, multi-layer menu display, very friendly man-machine interface. 

Historical data; the device's large-capacity non-volatile memory ensures that 600 historical event records can be recorded, with detailed record content, and data will not be lost when power is turned off. 

Dynamic and static self-inspection; the device has a complete dynamic and static self-inspection function, and online monitoring of the working conditions of each part of the device ensures the reliability of the device.