250KW Solar Inverter Photovoltaic Grid-Connected Inverter SG40KTL
- Ref Price:
-
$3,310.00 - 5,500.00
/ unit
- Loading Port:
- China Main Port
- Payment Terms:
- 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.
- Q: How does a solar inverter handle ground fault protection?
- A solar inverter handles ground fault protection by continuously monitoring the electrical currents flowing between the solar panels and the grid. If it detects any abnormal current leakage to the ground, it quickly shuts down the system to prevent any potential electrical hazards or damage. This ensures the safety of both the equipment and personnel working with the solar installation.
- Q: What is the role of a solar inverter in voltage and frequency regulation during islanding conditions?
- During islanding conditions, which occur when a distributed generation system (such as a solar PV system) continues to supply power to a local area even when the main electrical grid has been disconnected, the role of a solar inverter is crucial in maintaining voltage and frequency regulation. When a solar inverter operates in grid-connected mode, it synchronizes its output voltage and frequency with the utility grid. However, during islanding conditions, the solar inverter must transition into a standalone mode, where it becomes responsible for regulating voltage and frequency within the isolated microgrid. The primary function of a solar inverter in islanding conditions is to ensure that the voltage and frequency of the generated electricity remain within acceptable limits. It does this by constantly monitoring the electrical parameters and adjusting its own output accordingly. To regulate voltage, the solar inverter adjusts its output voltage based on the demand and the available power from the solar panels. It maintains a steady voltage level within a specified range, typically around 230-240 volts for residential applications. Frequency regulation is equally important, as it ensures that the electrical devices connected to the microgrid operate at their designed frequency, typically 50 or 60 Hz. The solar inverter continuously monitors the frequency and adjusts its output to match the required frequency, minimizing fluctuations and maintaining stability. In addition to voltage and frequency regulation, a solar inverter also provides other important functions during islanding conditions. These include power quality control, protection against overvoltage and overcurrent, and safe disconnection in case of emergencies or grid restoration. Overall, the role of a solar inverter in voltage and frequency regulation during islanding conditions is critical to maintain a stable and reliable power supply within the isolated microgrid. It ensures that the electricity generated by the solar PV system remains within acceptable parameters, allowing the connected electrical devices to operate efficiently and safely.
- Q: Can a solar inverter be used in a solar-powered air conditioning system?
- Yes, a solar inverter can be used in a solar-powered air conditioning system. A solar inverter converts the direct current (DC) produced by solar panels into alternating current (AC), which is required to power most appliances including air conditioning units. By using a solar inverter, the solar energy generated by the panels can be efficiently utilized to run the air conditioning system, reducing reliance on the electrical grid and lowering energy costs.
- Q: Do I need a special inverter for a battery storage system?
- Yes, a special inverter is required for a battery storage system. Unlike traditional solar inverters that convert DC power from solar panels into AC power for immediate use or for feeding back into the grid, a battery storage system inverter is designed to manage the charging and discharging of the batteries. It ensures that the stored energy is used efficiently and safely, and allows for backup power during grid outages.
- Q: How does a solar inverter handle reverse power flow?
- A solar inverter handles reverse power flow by automatically detecting the excess power generated by the solar panels and diverting it to the utility grid. This process, known as anti-islanding, ensures a safe and efficient operation of the solar system by preventing overloading and potential damage to the inverter.
- Q: Can a solar inverter provide power during a blackout?
- No, a solar inverter cannot provide power during a blackout. This is because solar inverters are designed to convert the direct current (DC) electricity generated by solar panels into alternating current (AC) electricity for use in homes or businesses. However, during a blackout, the solar panels cannot generate electricity since the grid connection is lost, and therefore the solar inverter cannot provide power.
- Q: What is the difference between a grid-tied and off-grid solar inverter?
- A grid-tied solar inverter is designed to convert the DC (direct current) electricity generated by solar panels into AC (alternating current) electricity that can be used in a home or business. It is connected to the utility grid, allowing surplus electricity to be sold back to the grid. In contrast, an off-grid solar inverter is specifically designed to be used in standalone systems where there is no access to the utility grid. It converts the DC electricity generated by solar panels into AC electricity for immediate use or storage in batteries for later use.
- Q: Can a solar inverter be used with a solar-powered refrigerator?
- Yes, a solar inverter can be used with a solar-powered refrigerator. The solar inverter is responsible for converting the direct current (DC) electricity generated by the solar panels into alternating current (AC) electricity, which is required to power the refrigerator. By using a solar inverter, the solar-powered refrigerator can operate efficiently and effectively by utilizing the solar energy collected from the panels.
- 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.
- Q: Can a solar inverter be used in areas with unstable grid power?
- Yes, a solar inverter can be used in areas with unstable grid power. Solar inverters are designed to convert the DC power generated by solar panels into AC power that can be used by household appliances or fed back into the grid. In areas with unstable grid power, solar inverters can provide a reliable and consistent power supply by utilizing the energy stored in the solar panels or batteries. This ensures a continuous power supply, even during grid power fluctuations or outages.
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250KW Solar Inverter Photovoltaic Grid-Connected Inverter SG40KTL
- Ref Price:
-
$3,310.00 - 5,500.00
/ unit
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 50 unit
- Supply Capability:
- 10000 unit/month
OKorder Service Pledge
OKorder Financial Service
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