Photovoltaic Grid-Connected Inverter SG40KTL

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$3,310.00 - 5,500.00 / unit
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China Main Port
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TT or LC
Min Order Qty:
50 unit
Supply Capability:
10000 unit/month

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1. Structure of Photovoltaic Grid-Connected Inverter SG40KTL 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, Africa and Europe. Available for hand installation, no need for lifting machinery

 assistance.

 

2. Main Features of the Photovoltaic Grid-Connected Inverter SG40KTL

• Full 36kW effective power at power factor of 0.9 due to apparent power reserves up to 39.8kVA

• Max. Efficiency at 98.3%

• Dual MPP trackers control

• Reduced cabling on AC side due to higher output voltage of 480Vac

• Integrated combiner box: 8 x MC4 connector pairs with DC string fuses, Type II overvoltage protection and DC switch, more safety and lower the system cost

• Can be wall-mounted without lifting equipment, weight 65 kg

• Active power continuously adjustable (0~100%)

• Reactive power control with power factor 0.8 overexcited ~ 0.8 underexcited

• Includes RS-485 interface, compatible with all common monitoring systems

• Product certification: TÜV, BDEW and CGC

• Manufacturer certification: ISO 9001, ISO 14001, OHSAS 18000

 

3. Photovoltaic Grid-Connected Inverter SG40KTL Images

 

 

4. Photovoltaic Grid-Connected Inverter SG40KTL Specification

Input Side Data

Max. PV input power

40500W

Max. PV input voltage

1000V

Startup voltage

300V

Nominal input voltage

710V

MPP voltage range

280~950V

MPP voltage range for nominal power

560~800V

No. of MPPTs

2

Max. number of PV strings per MPPT

4

Max. PV input current

66A(33A/33A)

Max. current for input connector

12A 

Output Side Data

Nominal AC output power

36000W

Max AC output power(PF=1)

39800W

Max. AC output apparent power

39800VA

Max. AC output current

48A

Nominal AC voltage

3/N/PE, 277/480Vac or 3/PE, 480Vac

AC voltage range

422~528Vac 

Nominal grid frequency

50Hz/60Hz

Grid frequency range

45~55Hz/55~ 65Hz

THD

< 3 %  (Nominal power)

DC current injection

<0.5 %In

Power factor

>0.99@default value at nominal power

(adj. 0.8overexcited ~0.8underexited)

Protection

Anti-islanding protection

Yes

LVRT

Yes

DC reverse connection protection

Yes

AC short circuit protection

Yes

Leakage current protection

Yes

DC switch

Yes

DC fuse

Yes

Overvoltage protection

DC Type II DIN rail surge arrester(40KA)

System Data

Max. efficiency

98.30%

Max. European efficiency

98.00%

Isolation method

Transformerless

Ingress protection rating

IP65

Night power consumption

<1W

Operating ambient temperature range

-25~60℃(>45℃ derating)

Allowable relative humidity range

0~100%

Cooling method

Smart forced air cooling

Max. operating altitude

4000m (>3000m derating) 

Display

Graphic LCD

Communication

RS485(RJ45 connector)

DC connection type

MC4

AC connection type

Screw Clamp terminal

Certification

VDE0126-1-1, EN62109-1, EN62109-2,BDEW,

CGC, NRS 097-2-1, GB/T 19964, UTE C15-712-1

IEC 61683, IEC 60068-2, IEC61727, IEC62116,

IEC62109-1, IEC62109-2, EN50178, IEC62103,

EN61000-6-1, EN61000-6-2, EN61000-6-3, EN61000-6-4

Mechanical Data

Dimensions(W×H×D)

634×820×257mm

Mounting method

Wall bracket

Weight

65kg

 

5. FAQ of Photovoltaic Grid-Connected Inverter SG40KTL

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: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:Solar grid inverter does not merge into the grid, direct access to the load to the load power supply?
Widely used in air conditioning, home theater, electric wheel, power tools, sewing machines, DVD, VCD, computer, TV, washing machine, range hood, refrigerator, video recorders, massage, fan, lighting and so on.
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:What is the difference between a PV grid-connected inverter and an off-grid inverter?
Offline generally need energy storage, not to send energy online. Power grid has no right to interfere.
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:Photovoltaic grid-connected inverter problem
Hello, the definition of the zero line is not caused by the transformer three-phase electric tail connection? I now do not understand why there is no isolation transformer AC output marked is N (zero line), and it is not the transformer three-phase power of the tail connection leads to, this is the zero line? The The
Q:Is the PV inverter a current source or a voltage source?
According to the waveform modulation method can be divided into square wave inverter, stepped wave inverter, sine wave inverter and modular three-phase inverter.
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.
The small use of field-effect transistors while using a DSP conversion controller to improve the quality of the output power makes it very close to the sine wave current.
Q:The function of photovoltaic grid - connected inverter
Finally, a sinusoidal AC output for a grid-connected photovoltaic power generation system is generated by a low-pass filter.
Q:Is the grid side of the grid and the inverter?
The grid load side of the grid is the grid. The inverter is an important part of the PV grid-connected system and can not be regarded as an external load. Photovoltaic power generation system is included in both grid and off-grid.

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