JKW-8 Intelligent capacitance monitoring controller

Main purpose and scope of application
JKW-8 intelligent capacitance monitoring controller is dedicated to the external control of ZUIC-8 series of intelligent power capacitors. It can control the automatic switching of up to 64 intelligent capacitors through the RS485 bus to keep the power factor of the grid in the best state .
This product complies with: industry standard JB/T9663-2013 (our company is the main drafting unit of this standard).

Working conditions
1. Altitude: no higher than 2500 meters;
2. Ambient temperature: -25°C-50°C;
3. Air humidity: no more than 50% at 40°C, no more than 90% at 20°C;
4. Surroundings Environment: no corrosive gas, no conductive dust, no flammable and explosive media;
5. Installation location: no severe vibration;

Functional characteristics
1 JKW-8 intelligent capacitor monitoring controller is mainly used for the automatic control of the capacitor reactive power compensation device of the low-voltage power distribution system to keep the power factor of the grid in the best state.
2. Large-screen LCD display (including backlight, the backlight of any key is bright, and the backlight of any key is not operated within a minute), and the man-machine interface is friendly. The text prompt operation is intuitive and simple. Real-time calculation and display of three-phase power factor, three-phase active power, three-phase reactive power, three-phase voltage, three-phase current, zero sequence current, three-phase voltage distortion rate, three-phase current distortion rate, 3-25 voltage and current harmonics Wave content rate, real-time clock, active power, reactive power, etc.
3. The JKW-8 intelligent capacitance monitoring controller can store a large amount of 24 o'clock hourly data and daily statistical data at least 200 days a day, which can be extended to 800 days according to user requirements. The data includes three-phase voltage, three-phase current, three-phase power factor, three-phase active power, three-phase reactive power, three-phase voltage distortion rate, three-phase current distortion rate, active energy, and reactive power at the hour of the day Electricity, daily statistics of the maximum value and time of occurrence of three-phase voltage, minimum value and time of occurrence of daily three-phase voltage, maximum value and time of occurrence of daily three-phase current, minimum value and time of occurrence of daily three-phase current, daily three-phase active power Maximum value and time of occurrence, minimum value and time of occurrence of daily three-phase active power, maximum value and time of occurrence of daily three-phase reactive power, minimum value and time of occurrence of daily three-phase reactive power, maximum value of daily three-phase voltage distortion rate and Time of appearance, minimum value and time of occurrence of daily three-phase voltage distortion rate, maximum value and time of occurrence of daily three-phase current distortion rate, minimum value of daily three-phase current distortion rate and time of occurrence, daily high voltage time of three-phase, daily three-phase Low voltage time, daily three-phase voltage qualification rate, daily three-phase voltage distortion rate over standard time, daily three-phase current distortion rate over standard time, daily three-phase power factor below 0.95 time, load imbalance rate over standard time, 1-64 The total operating time of the capacitors, the switching times of the 1-64 capacitors, the time of power outage, the time of incoming power, the number of outages, the number of incoming calls, the maximum current value of 15 minutes per day, and the time of occurrence.
4. All-digital preset various control parameter functions, the parameters that can be set include password (password), old number (communication number), PT transformation ratio, CT down transformation ratio, overvoltage threshold, undervoltage threshold, target power factor, Switching delay, voltage and current distortion rate threshold, clock, compensation scheme capacitor capacity, capacitor discharge time, etc.
5. Communication function, with S232 and RS485 hardware protocol communication ports, using 101 or MODEBUS-RTU communication protocol, on-site communication or remote communication can be used, real-time timing call of various power parameters, modification of control parameters, remote switching of capacitors , It can be connected with short-distance (30-50 meters) wireless communication module or handheld computer for data on-site meter reading.
6. With the function of manually switching capacitors, the capacitors can be manually switched on and off without voltage and current signals.
7. Comprehensive protection function, J KW-8 intelligent capacitance compensator has protection functions such as overvoltage, phase loss, undervoltage, harmonic overvalue, etc., and the alarm relay can be allowed or prohibited to be closed through the control parameters.

The main technical parameters

Model specification and size

Host computer analysis system software
1. Operating environment (operating system): Windows98/2000/XP
2. Communication function: The communication function of the analysis system software can be used to remotely adjust the control parameters and clock of JKW-8, which can monitor all kinds of power grids in real time. Parameters and capacitor switching status, remote control switching capacitors, real-time display of all power parameters including harmonics, and historical data can also be downloaded.
3. Analysis function: The analysis system software stores a large amount of downloaded historical data in an orderly manner according to the equipment number, and can display or print any grid parameters in the form of a table curve or bar graph according to the time interval specified by the user.
4. Simple operation: The analysis system software has a menu and a shortcut toolbar, which are intuitive and easy to understand. Most of the operations can be completed by the mouse, and a detailed user manual is attached.

Communication
1. Available baud rate: 57600bps, 38400bps, 19200bps, 9600bps, 4800bps, 2400bps.
2. Data transmission method
(a) The RS232 transmission distance is up to 15 meters.
(b) The RS485 transmission distance is up to 1200 meters.
(c) Short-distance wireless communication, the longest transmission distance is 200 meters.
(d) Wireless communication based on GSM network, the transmission distance is only limited by the coverage of GSM network.
3. Point-to-point wired communication

Basic wiring diagram of JKW-8FA hybrid compensation

JKW-8SA Three-phase Common Compensation Basic Wiring Diagram

Outline and installation dimensions (embedded and rail type)