Micro-Inverter BDM-300

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Description:

 

A solar micro-inverter, converts direct current (DC) electricity from a single solar panel to alternating current (AC). The electric power from several micro-inverters is combined and fed into an existing electrical grid. Micro-inverters contrast with conventional string or central inverter devices, which are connected to multiple solar panels.

 

Characteristic & Advantages:

More Energy Harvest: Distributed MPPT allows10~25% more energy harvest
Simple: Modularized,single ac cable to the house
Reliability: Longer life time and almost 100% operation hours
Security: No high Voltage, makes safter environments
Inteligent : Monitoring each module
Savings: No dc components and significantly save labor cost

 

Micro-Inverter BDM-300 

MODEL

BDM-300-240A

BDM-300-208A

BDM-300-EU

BDM-300-AU

INPUT(DC)

Max Recommended PV Power (Wp)

310

Max DC Open Circuit Voltage (Vdc)

60

Max DC Input Current (Adc)

12

MPPT Tracking Accuracy

>99.5%

MPPT Tracking Range (Vdc)

22-55

Isc PV (absolute maximum) (Adc)

14

140

Maximum Inverter Backfeed Current to the Array (Adc)

0

0

OUTPUT(AC)

Rated AC Output Power (Wp)

250

Nominal Power Grid Voltage (Vac)

240

208

230

Allowable Power Grid Voltage (Vac)

211-264*

183-229*

configurable

Allowable Power Grid Frequency (Hz)

59.3-60.5*

configurable

THD

<3% (at rated power)

/

Power Factor (cos phi, fixed)

>0.99 (at rated power)

Current (maximum continuous) (Aac)

1.2

Current (inrush) (Peak and Duration)

12A, 15us

Nominal Frequency (Hz)

60

50

Maximum Output Fault Current (Aac)

2.2A peak

Maximum Output Overcurrent Protection (Aac)

6.3

Maximum Number of Units Per Branch

16 (12AWG); 12 (14AWG)

SYSTEM EFFICIENCY

Peak Efficiency

96.30%

96.30%

95.80%

CEC Efficiency

95.5%

Night Time Tare Loss (Wp)

0.08

0.06

0.07

PROTECTION FUNCTIONS

Over/Under Voltage Protection

Yes

Over/Under Frequency Protection

Yes

Anti-Islanding Protection

Yes

Over Current Protection

Yes

Reverse DC Polarity Protection

Yes

Overload Protection

Yes

Protection Degree

NEMA-6 / IP-67

I

Environment Temperature

-40℃——+65℃

OTHER PARAMETERS

Environment Humidity

100%, condensation

Display

LED LIGHT

Communications

Power Line

Dimension (D-W-H mm)

180*186*25

Weight (Kg)

1.5

Environment Category

Indoor and outdoor

Wet Location

Suitable

Pollution Degree

PD 3

Maximum Altitude

2000 M

Overvoltage Category

II(PV), III (AC MAINS)

Product Safety Compliance

UL 1741

CSA C22.2 No. 107.1

IEC/EN 62109-1

IEC/EN 62109-2

Grid Code Compliance* (Refer to the label for the detailed grid code compliance)

IEEE 1547

VDE-AR-N 4105*

VDE V 0126-1-1/A1

G83/2, CEI 021

AS 4777.2 & AS 4777.3

 

 

Note:

For grid code VDE-AR-N 4105, maximum 3.68kVA PV plant is limited. The grid protection report and setting are readable from the gateway.

For grid code G83/2, maximum 16A per phase is limited. The grid protection report and setting are readable from the gateway.

Grid parameters are configurable through the BDG-256 gateway.

 

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Q:What is the difference between a grid-connected inverter and an off-grid inverter? What are the advantages of a hybrid inverter?
Grid-connected inverter does not need energy storage, but the energy can not be controlled, how much light to send online to the number of online, simply do not want people to the grid does not like.
Q:Three-phase photovoltaic inverter grid, the use of phase-locked loop is what?
In addition to the function of converting DC current into alternating current, the inverter also has the maximum output tracking function (MPPT), overvoltage protection, short circuit protection, island protection, overheat protection, overload protection and DC grounding
Q:What are the methods of photovoltaic grid-connected inverter control
Inverter main circuit need to have a control circuit to achieve, generally have square wave and sine wave two control methods, square wave output inverter power supply circuit is simple, low cost, but low efficiency, harmonic components. Sine wave output is the development trend of the inverter, with the development of microelectronics technology, there are PWM function of the microprocessor has also come out, so the sine wave output inverter technology has matured.
Q:PV grid-connected inverter can directly load it?
TL5001 operating voltage range of 3.6 ~ 40V, its internal with an error amplifier, a regulator, oscillator, a dead zone control PWM generator, low voltage protection circuit and short circuit protection circuit
Q:What is the PV inverter starting voltage
Inverter is a kind of semiconductor device composed of power adjustment device, mainly used for DC power into AC power. Generally consists of boost circuit and inverter bridge circuit. The boost circuit boosts the DC voltage of the solar cell to the DC voltage required for the inverter output control. The inverter bridge circuit converts the boosted DC voltage to the AC voltage of the common frequency. The inverter is mainly composed of a switching element such as a transistor, and turns the DC input into an AC output by repeatedly turning ON-OFF the switching element in a regular manner. Of course, it is not practical to simply output the inverter output waveforms from the on and off circuits
Q:What is the difference between a PV inverter and a solar inverter?
The main function of photovoltaic grid-connected inverter is to convert the DC power of the solar PV module into the same frequency as the sinusoidal AC power of the grid (the grid is generally AC power grid, DC can not be directly connected)
Q:Is the PV inverter a current source or a voltage source?
For the inverter for the grid system, depending on whether the transformer can be divided into transformer-type inverter and transformer-free inverter.
Q:What is the difference between low voltage grid connection and medium voltage grid connection?
When the power grid failure or disturbance caused by the power supply and network voltage drop, in the voltage drop range, the power group can be uninterrupted through the inverter and network operation.
Q:Is the grid side of the grid and the inverter?
Grid-type system power transmission sequence: photovoltaic panels> relays> inverters> relays> electricity load + power grid (both in parallel).
Q:Generally a large grid-connected photovoltaic power plant will have several inverters
Inverter, a single failure, does not affect other operations, the impact on the grid is small, high reliability.

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