JKW1B Series Reactive Power Automatic Compensation Controller Thd Three-Phase Reactive 2-15 Harmonic Multifunctional Energy Power Meter 380V

Main Product Datas

Basic parameters

Control parameters

Measurement Accuracy

Adjustable range and factory setting values of control parameters

 Introduction of JKW1B Series Reactive Power Automatic Compensation Controller 

The JKW1B Series is a state-of-the-art reactive power compensation controller engineered to optimize 3-phase electrical power systems operating at 3-phase low voltage (380V). Designed for industrial and commercial applications, this multifunctional power instrument combines automatic power factor correction, total harmonic distortion (THD) analysis, and three-phase imbalance correction to ensure superior power quality and energy efficiency. By addressing power quality harmonics and implementing 2-15th harmonic filtering, it mitigates grid instability caused by nonlinear loads, reducing operational losses and extending equipment lifespan. Its real-time power quality monitoring capability provides granular insights into voltage fluctuations, 3-phase current imbalances, and reactive energy compensation needs, enabling proactive adjustments for smart grid compatibility. With intelligent load balancing, the controller dynamically redistributes loads across 3 phases of power, minimizing reactive power in power systems and enhancing the power of 3 phase reliability. Ideal for facilities prioritizing low loss operations, the JKW1B Series supports reactive electricity management and reactive voltage stabilization, ensuring compliance with global energy standards. As a critical component of power quality equipment, it integrates seamlessly with 3 phase 3 phaseinfrastructures, delivering robust performance for 3 phase energy optimization and global power energy sustainability.
Advanced Features for Modern Grid Demands
Built to excel in complex electrical environments, the JKW1B Series excels in reactive power compensators technology, offering precise function of reactive power regulation to stabilize three-phase power networks. Its multifunctional power meter functionality extends beyond basic measurements, providing detailed analytics on power quality harmonics, reactive power in electrical systems, and 3-phase electrical power consumption patterns. The device’s smart grid compatibility ensures adaptability to evolving grid demands, while real-time power quality monitoring empowers users to detect anomalies like voltage sags, swells, or harmonic distortions instantly. For facilities operating at low voltage 380V, the controller’s 2-15th harmonic filteringcapability neutralizes high-frequency disturbances, safeguarding sensitive equipment from damage. The integrated automatic power factor correction system dynamically adjusts capacitive and inductive loads, optimizing reactive power compensation to reduce penalties from utility providers. Additionally, its intelligent load balancing algorithm ensures even distribution of 3 phase current, addressing three-phase imbalance correction to prevent overheating and energy waste. Compatible with renewable energy integrations and IoT-enabled power quality equipment, the JKW1B Series is a future-proof solution for industries aiming to enhance power quality meter accuracy and achieve global power energy efficiency goals. By harmonizing reactive energy compensation with 3 phase 3 phase coordination, this controller sets a new benchmark for the reactive power management in modern electrical systems.

Functions of JKW1B Series Reactive Power Automatic Compensation Controller 

• Low-loss operation ensures optimal three-phase energy efficiency in three-phase low-voltage (380V) systems, minimizing reactive power wasted in the grid.
• Advanced reactive power compensation controller with total harmonic distortion (THD) analysis to suppress power quality harmonics and stabilize three-phase power distribution.
• Automatic power factor correction dynamically adjusts reactive energy compensation, optimizing power quality and reducing penalties for grid operators.
• Integrated 2-15th harmonic filtering eliminates high-frequency interference and protects power quality equipment from reactive voltage fluctuations.
• Multifunctional power instrument provides real-time power quality monitoring of three-phase current, voltage unbalance, and reactive power in three-phase power systems.
• Smart grid compatibility enables intelligent load balancing of three-phase power and solves the problem of three-phase imbalance correction, thereby enhancing the reliability of three-phase power.
• Robust reactive power compensators solve reactive power issues in power systems and ensure seamless functionality of reactive power regulation in compliance with global power energy standards.
• Designed for three-phase three-phase coordination, this power quality meter supports reactive power management and reactive power compensation in industrial and commercial power grids.

 Working Principle of JKW1B Series Reactive Power Automatic Compensation Controller 

Reactive power compensation controller and three-phase balancing module
The reactive power compensation controller optimizes the three-phase power system by dynamically adjusting reactive power compensation to offset the inefficient operation of the three-phase low-voltage (380V) power grid. It uses real-time data from multi-function power meters to detect reactive power in the power system and trigger capacitor banks or reactors to eliminate inductive/capacitive imbalances, thereby achieving automatic power factor correction. At the same time, the three-phase unbalance correction module monitors the three-phase current differences and redistributes the load between the three-phase power sources, thereby stabilizing the reactive voltage and minimizing the waste of low-loss electrical energy. This dual-action mechanism improves power quality by maintaining balanced three-phase power flow, reducing grid stress, and meeting global power efficiency standards.
Harmonic filtering and THD analysis unit
Integrated 2-15th harmonic filtering technology is designed to reduce power quality harmonics generated by non-linear loads such as frequency converters or inverters in three-phase systems. The device uses passive/active filters to suppress harmonic distortion up to the 15th order, while a total harmonic distortion (THD) analysis module continuously scans the voltage and current waveforms to quantify harmonic pollution. Data from power quality meters is input into an algorithm that adjusts the intensity of the filter in real time to ensure compliance with IEEE-519 standards. By eliminating high-frequency noise and stabilizing reactive currents, the device prevents power quality equipment from overheating and extends the service life of three-phase power infrastructure. Its real-time power quality monitoring capabilities can also alert operators to emerging harmonic risks, allowing proactive mitigation.
Smart grid interface and load balancing system
JKW1B's smart grid-compatible module enables seamless integration with modern energy networks through IoT-based real-time power quality monitoring and adaptive intelligent load balancing. The system analyzes three-phase energy consumption patterns and redistributes loads on three-phase power lines to prevent any single-phase overload. By optimizing reactive power distribution and aligning it with the reactive power demand function, the module minimizes reactive power in the grid and improves the reliability of three-phase power supply. The module also supports two-way communication with grid operators, allowing dynamic adjustment of reactive power compensators based on demand response signals. For low-voltage 380V applications, it ensures stable operation even at peak loads, and its reactive compensation algorithm complies with the global power energy sustainability framework, making it ideal for hybrid renewable energy grid systems.

Wiring Method for JKW1B Series Reactive Power Automatic Compensation Controller 

Voltage input
The controller has an automatic phase sequence judgment function, but the input voltage should be as consistent as possible with the input current, that is, the phase number and phase sequence must be consistent. At this time, either the BC line voltage or the A phase voltage can be used as a signal; the wiring method should be adjusted accordingly.

Current input

The current is taken from the A line current. The standard rated input current is 5A. When it is greater than 5A, an external current transformer (CT) is required.
Although the controller has an automatic phase sequence judgment function, the inputs should have the same nature in terms of phase and phase sequence number.
If other instruments are connected to the CT, the wiring should be connected in series.
Before removing the current input wiring of the product, please disconnect the primary circuit of the CT or short-circuit the secondary circuit.

CT Connection

In order to facilitate disassembly and assembly, terminal blocks should be used instead of direct connection to CT.

Communication wiring

The network power meter is equipped with an asynchronous half-duplex RS485 communication interface for data transmission on a communication line that follows the MODBUS-RTU protocol. A maximum of 128 network power meters can be connected to one line at the same time, and each network power meter has its communication address (Addr) set.
It is recommended to use shielded twisted pair cables for communication connection, with a wire diameter of not less than 0.5 mm. The common terminal can be omitted, or if the common terminal is grounded, a "single-ended single-point grounding" system must be used. Connect a terminal matching resistor of 120 Ω to 1 kΩ between the A and B terminals of the terminal instrument. When wiring, the communication line should be kept away from high-current cables or other strong electromagnetic field environments.
In order to protect the safety of the communication interface and the controller itself, the switch input interface and temperature interface must be isolated from other external active devices, because RS485 is not isolated from these interfaces.

Number of main switch outputs
Active output is the switching control of compensation capacitors, which is used to synchronize different customer instructions, and the number of channels is 6, 8, 10 or 12. Capacitor switching modes include first-in-first-out switching, sequential switching, manual switching, and communication switching.

This mode is called sequential switching and is suitable for situations where different groups of compensation capacitors have different capacities. Each group of compensation capacitors must be wired in descending order of capacity. The capacitor with the largest capacity should be connected to K1, and the capacitor with the smallest capacity should be connected to K2.
FIFO switching is applicable to compensation capacitor groups of the same capacity. In this case, the FIFO method can ensure that the operating time loss of each group of capacitors is equal.
Mainly used in the debugging stage, manual switching is used to evaluate the wiring and compensation effects. In the measurement display mode, the capacitance value can be input and output by the left and right keys.
Communication switching is to remotely control the capacitor through the instructions issued by the controller. At this time, the controller abandons the control function but retains the protection part. Other devices write relevant content into the controller through communication to realize the switching of the capacitor.

Product Size