Photovoltaic Grid-Connected Inverter SG800MX

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1. Structure of Photovoltaic Grid-Connected Inverter SG800MX Description

A solar inverter, or PV inverter, or Solar converter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into

 autility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network.

 It is acritical BOS–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar inverters have

special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.

Suitable for 50Hz/60Hz grid, could be used in Asia, North America and Europe.

 

2. Main Features of the Photovoltaic Grid-Connected Inverter SG800MX

• Transformerless inverter, max. efficiency of 98.7%, CEC efficiency of 98.5% for SG800MX,max. efficiency of 98.6%, CEC efficiency of 98.0% for SG750MX

• Employing a patented thermal management system, the inverter is able to operate from -13˚F to 140˚F (-25˚C to 60˚C), and up to 19,600’ (6,000 m).

• High power density, small equipment footprint

• DC disconnect, AC circuit breaker, separate DC & AC cabinets

• Max. DC input voltage is 1000V, can be mounted on a skid or an e-house, giving maximum design flexibility and lowering installation costs

• Continuous active power control

• Advanced grid support functionality, meet grid requirements around the world

• Full remote and local power curtailment, PF, HVRT, LVRT, FRT controls via ModBus & Ethernet

• Designed for 20+ years of operating life

• NEMA4X electronics cabinet

 

3. Photovoltaic Grid-Connected Inverter SG800MX Images

 

 

 

4. Photovoltaic Grid-Connected Inverter SG800MX Specification

Input Side Data

 

Max. PV input power

900kW

Max. PV input voltage

1000V

Start voltage

565V

Min. operation voltage

545V

Max. PV input current

1600A

MPP voltage range

545~820V

No. of DC inputs

1, 6-12

PV array configuration

Negative ground (standard), Floating or Positive Ground (optional)

Output Side Data

 

Nominal AC output power

800kW

Max. AC output apparent power

880kVA

Max. AC output current

1512A

THD

 <3% (nominal power)

Nominal AC voltage

342V

AC voltage range

300~377Vac

Nominal grid frequency

50/60Hz

Grid frequency range

47~52Hz/57~63Hz

Power factor

>0.99@default value at nominal power, adj. 0.8 overexcited~0.8 underexcited

Isolated transformer

No

DC current injection

<0.5 % In

Efficiency

 

Max. efficiency

98.70%

European efficiency

98.40%

CEC efficiency

98.50%

Protection

 

Input side disconnection device

DC load switch

Output side disconnection device

Breaker

DC overvoltage protection

Yes

AC overvoltage protection

Yes

Grid monitoring

Yes

Ground fault monitoring

Optional

Over temperature protection

Yes

Insulation monitoring

Optional

General Data

 

DimensionsW×H×D

2598x2164x1000mm

Weight

2340kg

Operating ambient temperature range

-25~+60(55 derating)

Noise emission

<70dB

Night power consumption

<100W

External auxiliary supply voltage

480/600V(3/N/PE)

Cooling method

Temperature controlled air-cooling

Ingress protection rating

NEMA 3RIP54

Allowable relative humidity range

0~95% no condensing

Max. operating altitude

6000m (3000m derating)

Fresh air consumption

4425 m³/h

Display

LCD

Communication

RS485/Modbus, Ethernet(Opt.)

 

5. FAQ of Photovoltaic Grid-Connected Inverter SG800MX

Q1. What is the difference between inverter and solar inverter?

A1. Inverter only has AC inpput, but solar inverter both connect to AC input and solar panel, it saves more power.

 

Q2. What is the difference between MPPT&PWM?

A2. MPPT has higher efficiency, it can track the max power point and won't waste energy.

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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?
Offline generally need energy storage, not to send energy to the Internet. Grid has no right to interfere.
Q:The working principle of photovoltaic grid - connected inverter
Inverter will be converted into alternating current DC, if the DC voltage is low, then through the AC transformer boost, that is, the standard AC voltage and frequency. For large-capacity inverter, because the DC bus voltage is high, AC output generally does not require transformer boost that can reach 220V, in the small and medium capacity of the inverter, because the DC voltage is low, such as 12V, 24V, It is necessary to design a boost circuit.
Q:How the output voltage of the PV inverter and the grid-connected voltage are determined
due to the higher penetration rate of the car to go out to work or travel can be connected with the inverter battery drive electrical and various tools work. The car inverter output through the cigarette lighter is 20W, 40W, 80W, 120W to 150W power specifications. And then a large number of power inverter power
Q:Three-phase photovoltaic inverter grid, the use of phase-locked loop is what?
Grid-connected inverter can be operated locally through the LCD screen, or through remote monitoring with dedicated monitoring software.
Q:What is the difference between a PV grid-connected inverter and an off-grid inverter?
Grid-connected inverter will be directly sent to the power grid, so to track the frequency of the grid, phase, the equivalent of a current source. Of course, there are some inverters called low-voltage crossing ability, you can do PQ adjustment
Q:After the PV inverter, how to achieve the same period before the network?
Solar panel simulator: with MPPT function, simulated morning, noon, afternoon, evening, rainy weather, solar panels produced under different conditions in different voltages.
Q:What is the difference between a PV inverter and a solar inverter?
The main component of the inverter is the three-phase bridge converter. The main purpose of the grid-connected inverter is to change the power to DC and change the AC power. The main purpose is to improve the power quality (because the wind power generation is very large
Q:Photovoltaic grid-connected inverter without DC emc how will happen
can convert light energy into electricity, so that the current flow from one side to the other, the general can be issued equivalent to 10 to 20% of the received light energy. In general, the stronger the light, the more electricity is generated. Its working principle is based on the semiconductor PN junction of the photovoltaic effect. The so-called photodynamic effect is when the object by the light, the object within the charge distribution of the state of the electromotive force and current generated an effect.
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: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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