Photovoltaic Grid-Connected Inverter SG750MX

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1. Structure of Photovoltaic Grid-Connected Inverter SG750MX 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 SG750MX

• 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 SG750MX Images

 

 

 

 

 

4. Photovoltaic Grid-Connected Inverter SG750MX Specification

Input Side Data

 

Max. PV input power

850kW

Max. PV input voltage

1000V

Start voltage

520V

Min. operation voltage

500V

Max. PV input current

1600A

MPP voltage range

500~820V

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

750kW

Max. AC output apparent power

825kVA

Max. AC output current

1512A

THD

 <3% (nominal power)

Nominal AC voltage

315V

AC voltage range

277~347Vac

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

98.60%

European efficiency

98.30%

CEC efficiency

98.00%

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 SG750MX

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 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: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:Photovoltaic grid-connected inverter without DC emc how will happen
When solar or other light illuminates the PN junction of the semiconductor, a voltage (called a photogenerated voltage) occurs on both sides of the PN junction. This phenomenon is the famous photovoltaic effect.
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:Installation and maintenance of photovoltaic grid - connected inverter
photovoltaic systems Power generation system used in the cable must be connected firmly, good insulation and specifications appropriate.
Q:How the output voltage of the PV inverter and the grid-connected voltage are determined
supply through the cable to the battery. The use of household appliances connected to the power converter output can be used in the car a variety of electrical appliances. The available electrical appliances are: mobile phones, laptops, digital cameras, cameras, lights, electric razors, CD players, game consoles, handheld computers, power tools, car refrigerators and various tourism, camping, medical emergency appliances Wait.
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:Is the PV inverter a current source or a voltage source?
Inverter is a kind of semiconductor device composed of power adjustment device, mainly used for DC power into AC power.
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
, This method is simple to design, easy maintenance, but also for the power grid harmonics smaller, good power quality!

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