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| 类型 | 功率 | 客户位置 | 客户留言 | 日期 | 可售 |
|---|---|---|---|---|---|
| 混合 | 3 kW | 哈萨克斯坦 |
Hello. Please provide the contact details of your dealers in China or the contact information of your sales manager. I am ready to purchase test samples.
|
2025-11-18 | 可售 |
| 并网 | 12 kW | 哈萨克斯坦 |
Dear Sirs/Madams,
xxx hereby requests a commercial proposal for the design, supply of equipment, and, optionally, installation of a grid-tie solar power plant (SPP) for the needs of our enterprise, located at: Kazakhstan, xxx.
1. Basic Principles of the Future SPP
We plan to operate the SPP only during daylight hours and do not envisage the installation of battery storage. We are considering a "grid-tie system." In such a system, the electricity generated by solar panels will be primarily used for our own consumption, and any shortfall will be covered by the main power grid. At this stage, the primary goal is self-consumption to reduce costs.
2. Technical Requirements for Main Equipment
A. Grid-Tie Inverter (Converter)
Inverter Type: A three-phase grid-tie inverter with an output voltage of 380V.
Calculation of Required Inverter Power:
Based on our equipment list and its startup sequence, the maximum simultaneous load can reach 37.3 kW (when all main equipment sets and the compressor are operating).
First set: 8.2 kW + 3 kW + 5.5 kW + 5.5 kW = 22.2 kW.
First + second set: 22.2 kW + 8.1 kW + 3 kW = 33.3 kW.
All sets + compressor: 33.3 kW + 4.0 kW = 37.3 kW.
Minimum Considered Inverter Power: To stably cover the most probable peak loads (e.g., first set at 22.2 kW + compressor at 4 kW = 26.2 kW), we consider an inverter power of at least 30 kW to be necessary.
Preferred Inverter Power for Greater Reliability: Considering inrush currents and potential future load changes, we are considering selecting an inverter with a power of 35-40 kW.
Additional Inverter Requirements: The presence of multiple MPPT (Maximum Power Point Tracking) trackers is desirable for flexibility in panel installation (considering orientation, shading, etc.).
B. Solar Panels
Calculation of Required Total Panel Power:
Based on Average Daily Consumption: Our consumption is approximately 1400 kWh per month, which means about 56 kWh per day. Considering the insolation conditions in xxx (3.5-4 hours of effective sunlight per day), covering the average daily consumption would require panel power ranging from 14 kW (peak) to 16 kW (peak).
Balancing with Inverter Power: For efficient use of the inverter's capacity and to cover most of the peak daytime consumption with solar energy, we plan to install panel power corresponding to the selected inverter power. For example, for a 30 kW inverter, considering weather conditions and a DC/AC ratio (usually 1.0-1.3), we are considering installing panels with a total capacity of 25-35 kW (peak).
Minimum Considered Panel Power: Prioritizing cost minimization while ensuring a significant portion of daytime consumption is covered, we are prepared to start considering panel power of 20-25 kW (peak), with the possibility of increasing it depending on the budget and available installation space.
Panel Type: Monocrystalline or polycrystalline silicon panels with high durability, considering the climatic conditions of the region (snow loads, temperature fluctuations).
Consideration of Insolation Conditions in xxx: We understand the importance of accurately assessing the solar radiation level in xxx throughout the year and plan to order a generation simulation based on local climate data.
3. General System Considerations
Battery-less System: Advantages for us – significant reduction in initial costs, simplified maintenance. Disadvantages (no generation at night/during bad weather, grid dependence) will be limited as our enterprise operates only during the day.
Actual Load Profile: We recognize the importance of understanding our hourly electricity consumption for optimal system design.
Installation Site and Conditions: It is necessary to assess the availability of sufficient area (roof or ground) and minimize the impact of shading.
Grid Connection Procedures: We will need to clarify the rules and procedures for connecting to the power grid with our local energy supply organization.
Protective Equipment: Protective devices against overcurrent, earth faults, surges, etc., will be required.
Conclusion
Based on the foregoing, for our situation in xxx, provided we create an economical SPP without battery storage, we consider it realistic to start considering a configuration that includes an inverter with a power of at least 30 kW and solar panels with a total capacity of 20-25 kW (peak). Depending on the actual load and budget, we are prepared to consider increasing the inverter power to 35-40 kW and the panels to 25-35 kW (peak).
We kindly request you to provide a commercial proposal including:
Cost of main equipment (inverter, solar panels, mounting systems, cables, protective switchgear) with indication of models and manufacturers.
Technical specifications (datasheets) of the proposed equipment.
Cost of project design works.
Optionally: cost of installation and commissioning works.
Delivery times for equipment and work completion timelines.
Warranty terms for equipment and works.
Payment terms.
An estimated annual energy generation calculation for the proposed SPP configuration, considering the climatic data of xxx.
Delivery Terms: Ex-works or delivery to the address: Kazakhstan, xxx.
Details for the commercial proposal:
xxx
We look forward to a fruitful cooperation.
Sincerely,
xxx
General Director
xxx
|
2025-05-28 | 可售 |
| 并网 | 215 kW | 哈萨克斯坦 |
Dear Sir, we need 250KW on-grid inverter - 4 pcs.
|
2025-04-08 | 可售 |
| 并网 | 352 kW | 哈萨克斯坦 |
Good afternoon
I need a solar network inverter SUNGROW SG50KTL.
Maximum input power 54300 W
Operating temperature: -25С +60С
Maximum input voltage 1100 V
Starting voltage 200V
Rated voltage 780V
Input range voltage MRRT 200-1000 V
MRRTP voltage at full load 540-850 V
Rated output power 48000 W
Maximum output power 53000 W
Maximum output current strength 55.A
Rated voltage networks 3/PE,540V (AC)
Nominal range network frequencies 50Hz/55-65Hz
Distortion factor current waveforms <3% (at rated power)
Maximum power 99.00%
Protection class IP65
Number of inputs (cells) 8 pcs.
Efficiency 98.9% 98.5%
|
2025-02-05 | 可售 |
| 并网 | -- | 哈萨克斯坦 |
Good day, I need a mobile solar inverter Variant 1: SMA STP 50-41 (50 kW), (60 kW) 5 pieces
|
2024-10-31 |
已售完
|
| 并网 | -- | 哈萨克斯坦 |
Guten Abend!
wir benötigen 10 Stück Wechselrichter SMA STP 50-41 (50 kW)
|
2024-10-30 | 可售 |
| 并网 | 11 kW | 哈萨克斯坦 |
we order one piece only now
|
2024-10-03 | 可售 |
| 混合 | -- | 哈萨克斯坦 |
Interested on Inverters and on their price. Would like to cooperate
|
2024-07-24 |
已售完
|
| 并网 | 1100 kW | 哈萨克斯坦 |
SG1100UD-MV - 1 No.
|
2023-11-16 |
已售完
|
| 并网 | 216 kW | 哈萨克斯坦 |
we need 2 high voltage inverters MAX 196KTL3-X
|
2023-09-22 |
已售完
|
| 并网 | -- | 哈萨克斯坦 |
quantity: 2
|
2023-09-21 |
已售完
|
| 并网 | 150 kW | 哈萨克斯坦 |
Hi What price this inverters? I need to collect 50 MW. for customerxxx
|
2019-09-09 | 可售 |
| 并网 | 185 kW | 哈萨克斯坦 |
Hi What price this inverters?
I need to collect 50 MW. for customer xxx
|
2019-09-07 | 可售 |
| 离网 | 30 kW | 哈萨克斯坦 |
Good day!
We want to buy off-grid three-phase solar inverter 50 kW with built-in MPPT controller. If You have any proposal, please send the datasheet of Your product and the price on EXW-factory delivery conditions.
I'll very appreciate it!
Best regards,
xxx
|
2019-07-25 |
已售完
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| 离网 | 4 kW | 哈萨克斯坦 |
Send me pls PI and packing list for 4kw inverter 30pcs
|
2019-04-17 | 可售 |
| 并网 | 16.5 kW | 哈萨克斯坦 |
Dear Sir(s)
We want to get price information from you for further purchase on the Three-Phase String Inverter Eversol TLC15K (IP65).
Please send us a quotation.
We suggest that you send us your price.
We look forward to your early reply.
Yours faithfully,
|
2018-08-03 | 可售 |
| 并网 | 20 kW | 哈萨克斯坦 |
Good day! We need 11 pc this solar inverters. Please contact with us by skype or our e-mail. Waiting you.
|
2015-05-26 | 可售 |
| 并网 | 15 kW | 哈萨克斯坦 |
ASAP! Good day. We are company who built new solar station and we need 24 qty Danfoss invertors 139F0013 15kWt. Please contact with me ASAP, than we can do request/order! Thank you.
|
2014-10-28 | 可售 |
| 混合，微型 | 1000 kW | 哈萨克斯坦 |
数量: 1000 件
I need best quality |
2025-02-09 |
已售完
|