The cabinet body is made of high-quality cold-rolled steel, with good flatness, and the outer surface is sprayed with plastic, which has strong anti-corrosion ability; the internal frame is made of galvanized steel plate coated with aluminum-zinc steel plate to ensure better electrical conductivity and corrosion resistance. The device adopts a user-universal matching cabinet, which makes the installation, use, maintenance and other aspects of the user more convenient, and can also be designed according to the user’s requirements.
Automatic control: KCDK low-voltage automatic reactive power compensation controller is adopted.
Switch: knife switch, molded case circuit breaker, knife fuse switch.
Transformer: Current Transformer.
Capacitor: KC-BKMJ type low voltage parallel capacitor.
Reactor: KC-CKSG type low-voltage series reactor can choose reactors with different reactance ratios according to the situation.
Switching switch: special contactor for switching capacitor, KCFK type compound switch and KCDB type thyristor (using imported thyristor).
Protection components: BKPD arresters, fuses, miniature circuit breakers.
KCDK controller technical parameters
Measuring system: three-phase
Measuring voltage: three-phase voltage or two-phase voltage (A, C voltage)
Measuring current: 0~5A three-phase current or one-phase current (B-phase current)
Frequency: 50HZ
Current input impedance: <0. 1Ω
Number of output circuits: 12, 16
Output contact capacity: DC 12V 6 0mA/branch, AC22 0V 5A/branch
Working voltage: AC22 0V
Overvoltage protection setting range: 400V~4 80V step size 2V
Undervoltage protection setting range: <30 0V
Absorbed power consumption: voltage 0.2 VA/phase current 0.1 VA/phase
Target power factor setting range: 0.9~1.00 step size 0.01.
The sampling physical quantity is reactive power, and there is no switching oscillation and no compensation dead zone during operation.
Compensation method: separate-phase compensation/three-phase common compensation/comprehensive compensation.
With manual compensation/automatic compensation two working modes

Zero-current switching – using high-power thyristor current zero-crossing switching technology to achieve no inrush current, no impact, no arc re-ignition, after the capacitor is removed, it can be switched on again without discharge, and can be switched frequently;
Fast dynamic response – fast tracking system load reactive power changes, real-time dynamic response switching, system response time ≤ 20ms;
The compensation effect is obvious – within the specified dynamic response time, the multi-level compensation is in place at one time, and the power factor after compensation is >0.95;
Use electronic switches to achieve non-contact switching, no noise, no wear;
Intelligent control – using microcomputer control, intelligent switching mode, to achieve unattended, and with microcomputer communication interface RS232/RS485, remote telemetry, remote signaling, remote control (optional);
Complete protection functions – with various digital functions such as overcurrent, overvoltage, undervoltage, and temperature overrun. At the same time, the device can automatically exit in case of external failure or power failure, and automatically recover after power supply;
Compensation method – three-phase symmetrical load compensation, three-phase asymmetrical load compensation and common division combined compensation;
Good heat dissipation effect – the device is installed with a cooling fan, which improves the ventilation and heat dissipation capacity of the device;
Flexible configuration of capacitor banks – the capacitance of each group can be configured in 1: 1: 1, 1: 2: 2, 1: 2: 4 and other configuration methods, which can meet the requirements of various reactive power requirements;