Static reactive power generators (FT-SVG series)

Product Description:

Areas of application .

◇The Kscap SVG series of three-phase load unbalance automatic regulating devices is based on the concepts of intelligence, environmental protection, energy saving and safety.

The Kscap SVG series is based on the concepts of intelligence, environmental protection, energy saving and safety, with industrial grade design and national manufacturing standards, and is fully adaptable to various conditions of indoor and outdoor use.

 

Product Features

◇Real-time dynamic three-phase load imbalance automatic adjustment

◇Inductive or capacitive power factor compensation

◇Dynamic voltage regulation support

◇Harmonic filtering of the 2nd to 31st harmonics

◇Telemetry, telecommunication and remote control functions can be realized at the same time

◇All-round event record, no loss in power failure, 500 events

◇5-inch high-definition touch screen, real-time display of power distribution data

◇Supporting remote online upgrade of background system software

 

 

Principle of operation

Three-phase unbalance compensation principle.

◇The system current signal is collected in real time through an external special CT, and is quickly analysed and processed by the internal special detection circuit and controller to determine the three-phase unbalance of the system, and at the same time calculate the three-phase balanced conversion current value, and send a signal to drive the IGBT module to work to transfer the unbalanced current from the phase with the remaining current offset to the phase with the insufficient current offset.

◇In the case of an unbalanced load, the current of the grid is adjusted to a balanced state of 100A, where the load of phase A is 52A. In the case of unbalanced power consumption on the load side, the three-phase current of the grid is balanced.

 

Voltage support principle.

◇Sampling through the compensation voltage point, when the internal controller gets the voltage information data, it immediately analyzes and processes the compensation point voltage information to determine whether the compensation point voltage exceeds the set value, when the voltage is lower than the set lower limit (Umin) value, it outputs capacitive current to raise the voltage, when the voltage is higher than the set upper limit (Umax) value, it outputs inductive current to lower the voltage, so as to realize the voltage of each phase The voltage of each phase is thus stabilised within the normal range.

 

Harmonic filtering principle.

◇The IGBT inverts the current of the load with the same size and phase opposite current to achieve harmonic filtering.

 

 Principle of reactive power compensation.

◇When the system power factor is lower than the set power factor target value, the device instantaneously sends out inductive or capacitive reactive current to inject into the system to achieve the purpose of dynamic reactive power compensation, under the intelligent decision of the internal controller, through the real-time collection of load-side system current signals by an external special CT to ensure the best compensation effect of the system.

                

 

 

Technical specifications                                                                                                          

Model number	SVG
Performance indicators
Operating voltage	400V (±20%)
Operating frequency	50Hz/60Hz (±10%)
Power rating	30A-500A(35kvar~400kvar)
Filter function	-
Filter range	2-50 times
Filtering capacity	<5% THDI (rated capacity)
Compensation function	-
Range of reactive power compensation	-0.98~+1 (adjustable)
Reactive power compensation capacity	>99% (rated capacity)
Unbalance function	-
Unbalance adjustment range	Split-phase power factor 0.95 to 1 (within capacity range)
Imbalance adjustment capacity	Unbalance ≦3% (within capacity)
Response time	< 1ms
Full response time	< 10ms
Switching frequency	20kHz
Overload protection	-
Display operations
5" touch screen	-
Show content	Current parameters/expert parameters/main wiring diagrams/event logs/wave curves etc.
Display language	Chinese/English etc.
Mode of operation	Panel touch/automatic hand switch
Communication methods
Hardware interfaces	RS485/Ethenet, fibre optic (optional), 3G (optional)
Communication protocols	Modbus, CDT
Environmental conditions
Ambient temperature	-25°C~55°C (can be customised to suit site)
Storage temperature	-40°C-70°C
Relative temperature	95% max, no condensation
Elevation	Below 1500m
Note: - stands for optional features, for more specifications please contact Fuchida

 

 

Design selection reference:

 

Distribution applications					End-of-pipe power distribution applications for public buildings
Transformer capacity	100~160	200~250	315~400	500~630	Rated incoming current (A)	100	160	250	400
Three-phase load unbalance automatic adjustment device (A)	50	75	100	125	Three-phase load unbalance automatic adjustment device (A)	15	25	35	50

Design reference list:

 

 

 

 

 

 

 

 

Installation wiring