Three-Phase Stabilized Power Supply With Fully-automatic Compensation

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Product Description:

SBW 20-320KVA    

 

SBW Three-Phase Stabilized Power Supply with fully-automatic compensation is suitable for the electric network with unbalanced three-phase voltage inputs. It can balance three-phase outputs automatically and maintain the output in good condition during the fluctuation of electric network and load.

   

 

Model

SBW (Independent regulator voltage)

SBW(Dependent regulator voltage)

VA Rating

20KVA

30KVA

50KVA

100KVA

50KVA

100KVA

180KVA

225KVA

320KVA

Input

Phase

Three Phase+N+GND

Voltage Range

Phase voltage 220V±20%、Line voltage 380V±20%

Output

Voltage Range

220V AC (Phase Voltage)、380V AC (Line voltage)

Voltage Precision

≤±3%

2%~5% (adjustable)

Frequency

50/60Hz

Efficiency

≥95%

Others

Protection

Overvoltage, overcurrent, loss of phase, phase-sequence and mechanical failure protection

Noise(dB)

50

Display Mode

LED Indicator Light; Pointer voltmeter

Input/Output Connection

Terminal Block

Waveform Distortion

No additional waveform distortion

Response Time

≤1.5s(External voltage change 10%)

Insulation Resistance

≥2MΩ

Dielectric Strength

Low frequency sine voltage 1500 for 1 minute (without the phenomena of breakdown and flashover)

Overload Capacity

120% of rating current >10s

Ambient Temperature

-10℃~+40℃

Relative Humidity

20%~85%

Working

Continuing Working

Dimension(W×D×H)mm

730x485x1110

810x570x1410

990x620x1530

800x600x1520

900x700x1660

1100x835x1830

1100x850x1830

1240x900x2109

Net Weight (kg)

160

185

245

410

280

415

645

765

945

Packing Dimension(W×D×H)mm

780x555x1160

860x640x1460

1040x690x1580

850x670x1570

950x770x1710

1150x905x1880

1150x920x1880

1290x970x2159

Gross Weight (kg)

175

200

266

435

310

439

673

810

995

·         Q. What is an UPS and What it is for ?

An uninterruptible power supply (UPS) is a device that allows your computer or telephone switch or critical equipement to keep running for at least a short time or longer time when the primary power source is lost. It also provides protection from power surges, spikes, brownouts, interference and other unwanted problems on the supported equipment.

·         Q. How long the UPS to run when power goes?

This can take 3 paths.
1.You can pick a UPS that is rated for pretty much the full VA you need so it will be running at 100% of capability and will thus last 'n' minutes.
2.You can pick a UPS that is rated at a much higher VA value than you really need so, for example, is running at 50% of capability and will thus last for longer than the UPS from option 1.
3You can use extra external battery packs to run for longer. If charging capability allows, the more and the bigger batteries you take with, the longer time UPS runs. 
or using a generator after about 6 hours, it will be more cost-effective, with a short runtime UPS to bridge the generator start-up gap.

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Q:PV grid-connected inverter and independent inverter in the control of what is the difference
PV grid-connected inverter in the grid before the inverter needs to determine the phase voltage phase frequency, the first phase-locked, in the grid and power generation.
Q:The working principle of photovoltaic grid - connected inverter
In the small-capacity inverter generally push-pull inverter circuit, full-bridge inverter circuit and high-frequency step-up inverter circuit three, push-pull circuit, the step-up transformer neutral plug connected to the positive power supply, two power Alternating current, the output to get AC power, due to the power transistor to ground, drive and control circuit is simple, and because the transformer has a certain leakage inductance, can limit the short circuit current, thus improving the reliability of the circuit. The disadvantage is the low utilization of the transformer, driving the emotional load is poor.
Q:What is the difference between low voltage grid connection and medium voltage grid connection?
For photovoltaic power plants when the power system accidents or disturbances caused by photovoltaic power plant grid voltage drop, in a certain voltage drop range and time interval, the photovoltaic power plant can ensure that non-off-line continuous operation.
Q:What is the difference between a PV inverter and a solar inverter?
Instability, the wind speed and the equipment itself will directly affect the generator rotation, so the voltage and current fluctuations, frequency instability, in short, is the power quality is poor) Therefore, through the inverter after the first rectification inverter to improve the quality of power
Q:After the PV inverter, how to achieve the same period before the network?
When the voltage, frequency, phase does not meet the requirements, the automatic closing closing pulse.
Q:In a photovoltaic grid-connected project, the role of the inverter is to convert the voltage into AC 220V or 380V for the grid, since the transformer will raise the voltage again
Spontaneous use is a way of grid, that is issued to the electricity, mainly their own family or internal use, the excess part of the power to the grid
Q:What are the methods of photovoltaic grid-connected inverter control
and can set the dead time between the upper and lower arms, the use of INTEL 80C196MC to achieve sine wave output circuit, 80C196MC to complete the sine wave signal, AC output voltage, to achieve regulation. Circuit output generally use LC circuit filter high frequency wave, get pure sine wave.
Q:PV grid-connected inverter can directly load it?
Grid-connected inverter is usually equipped with island protection function, can only receive the power grid, if the load directly, the output is disconnected.
Q:The function of photovoltaic grid - connected inverter
After some additional voltage buffering, the left side of the bridge is usually 18 ~ 20khz switching frequency, the dc voltage is converted to ac voltage.
Q:Grid-connected inverter is generally divided into photovoltaic power generation grid-connected inverter, wind power grid-connected inverter, power equipment and grid-connected inverter and other power generation equipment power generation inverter.
Grid-connected inverter is generally used with large-scale photovoltaic power plant system, a lot of parallel PV string is connected to the same set of inverter DC input, the general power of the use of three-phase IGBT power module, power

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