CMP Microprocessor based capacitor protector

Main purpose and scope of application
CMP capacitor microcomputer protector is mainly used for the intelligent protection and control of capacitors in high-voltage reactive power compensation devices, so that the capacitors can operate safely and eliminate the harm caused by abnormal switching of the capacitors.

Working conditions
1. The altitude is not higher than 2500 meters;
2. The ambient temperature is -25℃~+50℃;
3. The air humidity does not exceed 50% at 40℃, and does not exceed 90% at 20℃;
4. No surrounding environment Corrosive gas

Main technical parameters
1. Basic parameters
Power supply voltage: AC220V±10%;
power supply frequency: 45-65Hz;
signal frequency: 45-65Hz;
signal voltage: AC50-260V;
signal current: AC0-5A;
machine power consumption: <10VA ；

2. Measurement accuracy
Voltage: ±0.5%;
current: ±0.5%;
grid frequency: ±0.01Hz;
system clock: ±4ppm, the annual error is less than 2 minutes;

Functional characteristics
1. The CMP capacitor microcomputer protector is mainly used for the intelligent protection and control of the capacitor of the reactive power compensation device, so that the capacitor can operate safely and eliminate the harm caused by the abnormal switching of the capacitor.
2. All Chinese large-screen LCD display (including backlight, the backlight of any key is bright, and the backlight of any key is not operated within 2 minutes), the man-machine interface is friendly, and the Chinese prompt operation is intuitive and simple. Real-time calculation and display of capacitor three-phase current, current distortion rate, system voltage, system frequency voltage distortion rate, opening voltage, real-time clock, etc.
3. All digital preset various control parameter functions, the parameters that can be set include password (password), ID number (for communication), PT transformation ratio, CT transformation ratio, overvoltage threshold, undervoltage threshold, distortion rate threshold, clock , Opening overvoltage protection threshold, etc.
4. Communication function: with RS232 and RS485 hardware protocol communication ports, using 101 or MODBUS-RTU communication protocol, on-site communication or remote communication can be used, real-time, timing call various capacitor parameters, modification of control parameters, and short distance (30-50 meters) wireless communication function.
5. Comprehensive protection function: It has protection functions such as overvoltage, undervoltage, open delta, overcurrent, quick-break, limit of switching times, over-harmonic value, discharge delay, etc. After the alarm occurs, the two opening outlets will be as required Action, and send out a switch signal to alarm.