EN SVG Static var generator

Model description

EN SVG-400V-200kvar/4L

EN: Company code

SVG: Static var generator

400V: Voltage

200kvar: Capacity: 35kvar (35,50,75 and 100 kvar optional)

4L: Three phase four wire 3L: three phase three wire

EN SVG Static var generator can detect the loaded current in a real time through the external current transformer, extracting the reactive power contents of the loaded current calculated by the internal DSP, and then control the PWM signal generator to deliver signals to the internal IGBT, which makes the converter bring the reactive compensated current, meeting the requirement based on the setting values and finally realize the purpose of dynamic reactive compensation.

Three phase unbalance compensation

The switching times can be over 10000 times per second, with quick response and dynamic compensation.

Conditions of use

1.Environmental temperature: -10℃ ~ +40℃

2.Relative humidity: :5%~ 95% without condensation.

3.Altitude: ≤1500m, between 1500 ~4000m, according to GB/T3859.2, the power will be lowered by 1%

when adding 100m.

4.Environmental conditions: no harmful gas and steam, no conductive or explosive dust, no violent mechanical vibration

Technical parameters

1.Rated input line voltage: 400V(-20% ~ +20%)

2.Power grid frequency: 50Hz (range: 45Hz ~ 55Hz)

3.Power grid structure: three phase three wire, three phase four wire (400V)

4.Current transformer: 100/5 ~5,000/5

5.Circuit topology: Tri-level

6.Overall efficiency: ≥97%

7.Target power factor: 1

Performance

1.Single module capacity: 400V (35A, 50A, 75A and 100A optional)

2.Response time<10ms

3.Intelligent air cooling: with good ventilation condition

4.Noise:<70dB

Communication monitoring

1.Communication interface: RS485, CAN interface

2.Communication protocol: electrical total protocol, Modbus protocol

3.Protection function: Overvoltage protection, under-voltage protection, short circuit protection, over current protection, over temperature protection, driving fault protection, and double protection of lightning protection

4.Error alarming: support independent monitoring or concentrate monitoring.

Models

ENSVG-400V-35kvar / 3L

ENSVG-400V-50kvar / 3L

ENSVG-400V-75kvar /3L

ENSVG-400V-100kvar / 3L

ENSVG-400V-200kvar / 3L

ENSVG-400V-300kvar / 3L

ENSVG-400V-400kvar / 3L

ENSVG-400V-35kvar / 4L

ENSVG-400V-50kvar / 4L

ENSVG-400V-75kvar / 4L

ENSVG-400V-100kvar / 4L

ENSVG-400V-200kvar / 4L

ENSVG-400V-300kvar / 4L

ENSVG-400V-400kvar / 4L

Dynamic reactive power compensation device

(SVC- static var compensation)

EN SVC dynamic reactive power compensation device, the main circuit uses non-inrush current contactor or thyristor non-contact switch to switch the tuning capacitor bank (tuning reactance + capacitor bank). The control part is based on DSP technology, combining the theory of instantaneous reactive power with fast Fourier transform (FFT), highly-speed analyze voltage and current harmonic components in the system, real-time track and instantaneously compensate reactive power in the power grid, zero-crossing switching control technology of the tuning capacitor bank fully realize single-phase and three-phase tuning capacitor bank switching with no transient state and high-speed, so that the reactive power is dynamically compensated. Zero-crossing switching technology does not include transients and harmonics. It has the characteristics of no closing surge current, no arc reignition, no operating overvoltage, capacitors can be switched on again without discharging, fast tracking of reactive power changes, frequent switching, and fast dynamic response. Grouped multi-level compensation can be realized one time, and unbalanced load can be phase-compensated. Dynamic response time of dynamic reactive power compensation device: less than 20ms, power factor increased to above 0.92.

Application occasion

The dynamic reactive power compensation device is suitable for the occasions in the enterprise that need to compensate reactive power or need to filter out specific sub harmonic.

Features

1.Thyristor as non-contact switch, 1us ~ 3us switch

2.Zero voltage difference input and zero current removal technology

3.Dynamic reactive power compensation device switching without impact

4.Split phase compensation is all realized, which is close to stepless dynamic compensation

5.Harmonic suppression or control function

6.Complete protection

7.Friendly interface of dynamic reactive power compensation device

Technical parameters

Other low voltage compensation device:

Purposed reactive power compensation device for low-voltage arc furnace