The man-machine interface of this product adopts LCD Chinese LCD with large screen and takes advanced single chip technology as the core. It is easy to install and operate, suitable for AC 0.4KV, 50Hz low voltage.

 

Reactive power compensation control of distribution system. The controller has the functions of real-time monitoring parameters of power grid, harmonic protection, reactive power compensation, data communication and protection warning.

 

 

 

Conditions of use

 

Altitude: <2500 M

 

Ambient temperature: - 10 +55.

 

Relative temperature: 20%-90% at 25 C

 

Atmospheric pressure: 79.5Kpa~106 KPa

 

Environmental Conditions: There is no danger of explosion in the surrounding medium, no gas enough to damage insulation and corrode metal, no conductive dust, no violent vibration in the installation site, no rain and snow erosion.

 

 

 

basic function

 

(1) Display function

 

Using low power LCD LCD Chinese display screen, the parameters of power grid can be monitored in real time, set parameters and work status can be displayed.

 

1) Real-time display of power factor, voltage, current, active/reactive power, harmonic voltage distortion rate and harmonic current of power grid

 

Distortion rate, capacitor switching status and fault warning;

 

2) Display ER ratio, over-voltage protection, under-voltage protection, harmonic setting, switching/shearing delay, switching/shearing threshold, switching mode.

 

Capacitance allocation, capacitance capacity, communication address, communication baud rate and other setting parameters.

 

Three

 

(2) Setting up Functions

 

1) The ER ratio, over-voltage protection, under-voltage protection, harmonic voltage setting, harmonic current setting and temperature can be set directly.

 

Selection), target power factor, switching threshold, control delay, capacitance configuration, communication parameters and other settings.

 

2) Set parameters for automatic memory, power failure is not lost.

 

(3) Function of reactive power compensation

 

1) Sampling physical quantity is reactive power, no switching oscillation, no compensation dead zone;

 

2) Manual switching and automatic switching are two operation modes.

 

3) The way of switching:

 

1. Logical switching mode, each group of capacity is set freely; the capacitor with large switching capacity is preferred, while the capacitor with small switching capacity is preferred.

 

Cyclic switching between capacitors with equal capacitance;

 

2. Linear switching mode, first switching, then switching, is mainly used for filtering field control.

 

4) The connection mode of the main circuit adopts the Delta connection method.

 

5) The control output can be adapted to different switching elements such as electronic switch, AC contactor, composite electronic switch or vacuum contactor.

 

6) Control output contacts 10, each DC12V, not more than 30 mA or AC220V, 5A.

 

(4) Protection function

 

1) It has the functions of self-examination, self-regression and automatic reset.

 

2) It has the functions of under-voltage and over-voltage protection.

 

3) It has the function of harmonic over-limit protection.

 

4) with alarm output interface (optional).

 

(5) Over-limit and fault warning function

 

When a fault occurs in the power grid or a parameter exceeds the limit, the alarm indicator "flickers" to indicate overvoltage, undervoltage or some other factor.

 

The parameters exceed the limit.

 

(6) Real-time data communication function (selection)

 

It has RS-485 data transmission interface and supports MODBUS-RTU communication protocol, through which it can communicate with computers or other terminals.

 

Connection, real-time monitoring of power grid parameters, setting parameters, working status, modification of preset parameters, and can be achieved

 

Acquisition and exchange of various data information locally or remotely.