Electronics Projects
Waterproof 10A Solar PV Combiner Box 1000V DC For Big Solar Power Station
LONGMAX-SCB-10 strings LM-PVA-1/10-S LM-PVA-1/10-F
Description
Waterproof 10A Solar PV Combiner Box 1000V DC For Big Solar Power Station
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10 strings(10 inputs) Intelligent PV array combiner boxes with monitoring device for big solar power station
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Quick Detail:
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10 strings? Intelligent PV array combiner boxes with monitoring device for big solar power station.The combiner box is a device that combines the output of multiple strings of PV modules for connection to the inverter. It is typically used in the larger commercial and utility scale PV power plants. The combiner box commonly houses the input over current protection fuse assemblies for several strings (from as few as 2 strings to as many as 32), as well as the combined bus of those inputs into a single main output.
The PV combiner box also house other components for the site, such as a DC disconnect, surge protective devices and string monitoring hardware.
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Description:
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SCB-Monitoring Device SCBM4A,SCBM8A, SCBM12A ,SCBM16A is specially applied to intelligent PV combiner box. It can monitor the operating status of the solar system, measure the current and voltage of solar panels, collect the SPD (Surge Protective Device) status and the DC breaker status and control relay output for driving external executive body. The device can display the measured data and the status of the other device via 6 digital screen. It? can also connect the industrial equipment and computer to compose the monitoring system via the RS485 interface.
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Intelligent PV combiner monitoring terminal unit ?is based on the Modbus-RTU communication protocol. The checksum and the data sequence which are defined by Modbus protocol are necessary for the specific data exchange. The Modbus protocol is used in a communication line which the host requested and the slave respond. That is a half duplex means of communication. First of all, the host computer sends signal to a unique slave terminal according to the address, and then the slave device response the signal to the host computer.
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In a large photovoltaic (PV) grid generation system, it is generally to install a DC combining device between the PV module and inverter in order to reduce the connection between PV module and inverter, facilitate maintenance and improve reliability. Our intelligent photovoltaic combiner box with SPD series are especially designed to meet the requirement, which can provide a solution for PV power generation system matching with photovoltaic inverter. According to the input voltage of the inverter, a fixed number of similar PV modules can be connected to form a PV array by using PV array combiner box. Then different channels of PV arrays can be combined into the PV combiner box. Its output can be connected to inverter by way of circuit breakers with SPD protection.
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Intelligent PV array combiner boxes with monitoring device
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Key features:?
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1. According to the function, it will have a standard combiner box (SAB) and an intelligent combiner box (SCB).
According to different working environment, it will have polycarbonate (PC) and steel made boxes .
2.We choose all materials strictly on quality first principle. All components comply with DIN and VDE standards, and all adhere to the highest quality standards.?
3.CE, TUV, CQC certified.?
4,Meet outdoor installation requirements, IP65 . With anti-UV, anti-acid, anti-alkali, moisture, mildew, rodents and so on functions.
5,All components meet rated voltage DC1000 V requirements.?
6.With fuses on Inputs, switches on outputs, and SPD in both poles.
7,Can monitor the current of each string, system voltage, status of circuit breaker and SPD. Can display and read the data on both local and background part. Can accurately identify the fault and its position
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Specifications:
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To ensure body safety and reducing the danger. Longmax solar combiner has features as below:
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Meet outdoor installation requirements, the degree of protection is IP65, has the function of avoiding UV, acid and alkali, moisture, mold and rat;
2-32 strings of solar arrays can be input at the same time, each channel with 12A,1000Vdc (can be replaced to other level);
Each positive, negative string under the fuse protection;
With special high voltage PV SPD, both positive and negative pole have the function of thunder and lightning; Use photovoltaic circuit breaker;
Technical Data
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Max input modules channels | 2-32 strings |
Input array connection diameter | 4mm2 |
Output and ground diameter | ≤70mm2(ground wire 16mm2) |
Internal fuse rating | 1000V dc fuse,12A |
Input current of each channel | 10A |
Communication connection | RS485 |
Communication power supply requirements | Self-power |
Waterproof level of the box | IP65 |
Enclosure Color | Optional, Multi choice |
Guarantee | 2-5 years(2 years standard warranty ,can be extended into 5 years) |
Certification | TUV, CE, CCC |
Loading port | Shanghai port? China (mainland) |
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? The list of features
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Model | SCBM16A |
Application | Intelligent PV combiner box |
DC voltage | 1 channel? 50V~1000VDC? |
DC current | 1~16 channel forward and reverse DC0~20A PV combiner detection, total current |
DC power | 1~16 channel forward and reverse power,total power |
Communication | 1channel RS485 communication port, MODBUS-RTU communication protocol, can be connected to the PC monitoring system. 1channel RS232 communication port, MODBUS-RTU communication protocol, can be connected to the display terminal. |
Temperature measurement | 1 Internal environment temperature. -55~+125℃,±2℃.(-10~+85℃,±0.5℃) |
Display | 6 digital tube displays. The display will be off if any operating is not existed within the 30 minutes. The display will be on with operating the key. |
Digital input | 2 passive dry contact input. |
Maximum | Historical maximum of U, I1~I16 .The value can be cleared by remote host computer. |
Running time | 0~99999999.9H.The recording mode can be set to Power-on, voltage or current. The value can be cleared by remote host computer. |
? Parameters setting | The following parameters can be set by remote host computer. # # Lower voltage limit and higher voltage limit, higher current limit, current zero threshold. # Parity bit. # Delay time of alarm.(when the lasting time exceed the setting up time, the alarm will appear) # The record mode of running time(1: Power-on 2:Voltage 3:Current) The following parameters can be set by the key setting buttons. # # communication address # Communication Paudrate |
Alarm | Red Led will be on when alarm |
Size | 358mm*83mm*49mm(L*W*H) |
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5．Technical indicators
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Model | SCBM16A |
Aauxiliary power | DC24V(18V-36V) |
Power consumption | <5W |
Communication | RS485,RS232? Modbus RTU protocol |
Communication speed | 1.2kbps,2.4kbps,4.8kbps,9.6kbps,19.2kbps,38.4kbps,57.4kbps |
Communication parity | It can be set by remote host computer.(0:none 1:odd 2:even) |
Communication medium | 1.0 square shielded twisted pair, 1200 meters communication distance, the maximum number of nodes is 128. |
Digital input | passive dry node |
Input voltage | 1channel |
Voltage measuring range | 50V~1000VDC |
Input current channels | 16channels |
Input current range | -20A~20A |
measurement accuracy | 1 Level (FS) for voltage and current. |
Operating temperature | -20℃ ~ 70℃ |
Storage temperature | -30℃ ~ 80℃ |
Rrelative humidity | 5% ~ 95% Non-condensing |
Reaction time | 1S |
Protection class | IP30 |
Altitude | ≤3000 meter,the device for 3000 m or more need a special customization |
Insulation resistance | ≥100MΩ |
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6．Description of the initial value
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SCBM16A | Initial value | Remarks |
Higher voltage limit | 1000V | Voltage alarm upper thresholds |
Lower voltage limit | 50.0V | Voltage alarm lower thresholds |
Higher current limit | 20.00A | Current alarm upper limit |
Disconnection threshold value | 0.20A | Current alarm lower limit |
Communication Paudrate | 9600bps | can be set to 1200bps to 115200bps |
Address | 1 | 1 to 255 |
parity | none | None,odd,even can be set |
Running time | power-on | Can be set to power-on, voltage, and current. |
Alarm delay | 3S | The signal input exceeds a set threshold, the alarm rings ?after 3S |
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7．Terminal diagram
Terminal locations as shown below:
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7.1 Terminal diagram of side
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SCBM16A | Instructions | Remarks |
CH1 terminals |
1 | 1000V+ | 50~1000V voltage sampling positive |
2 | 1000V- | 50~1000V voltage sampling negative |
3 | PE | RS485 signal GND |
4 | B | RS485 signal B |
5 | A | RS485 signal A |
6 | COM | Switch input comment |
7 | DIN2 | Passive dry input 2 |
8 | DIN1 | Passive dry input 1 |
9 | 24V- | 24V Power negative |
10 | 24V+ | 24V Power positive |
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7.2 The state of the switch input wiring diagram
The digital input of the device is the passive node, the device itself provides power, no need extra power supply.Just connect the passive dry contact of the outside device to the input of the switch via the common node when wiring.
7.3 The current? direction
Applications:
Solar can be transformed into electricity that can be used directly or fed into the grid according to national policy. Longmax Technology is focused on developing and offering technology and products for sustainable solar energy development.
In the field of sustainable renewable photovoltaic energy, our core competencies products include:
Solar combiner boxes, AC/DC distribution cabinets/boxes, intelligent monitoring devices, portable AC/DC solar generators, multi-function power systems, environmental monitoring instruments, PV prevent reverse diodes and monitoring systems used in PV power plants.
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Our history is full of firsts and our products are installed in a huge number of solar power plants all over China and the world. Till now, the total installed capacity of Longmax is over 2GW worldwide.
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Our customers include entities and enterprises dedicated to the renewable energy field, solar power plants and agents/distributors around the world who are interested in the new PV industry.
Longmax Intelligent PV array combiner boxes with monitoring devices have been widely installed all over the world.
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Install:
Install the Box on the wall or Photovoltaic bracket
With 4 M8*30 Stainless steel screws (screw level 8.8)
Open all fuse holder before connecting
Status of breaker:Off
Distinguish positive pole cable &negative pole cable
Connected to the Inverter
Use cross screwdriver (Tightening torque, min. 2Nm, max. 2.5Nm)
Before closed fuse holders, make sure the open circuit voltage equal to every road ,the differ is ±30VDC.
2. Each SCB cables to Inverter must be all the same, cannot appear positive, negative reversal.
3. Operation of the circuit breaker:
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Components Structure
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Figure 1 : Components of PV combiner box
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Component | ?Explanation |
1 | DC circuit breaker |
? 2 | DC+/DC - fuse holders and fuses(one fuse for each string)? max:12 strings |
3 | SPD |
4 | Ground output terminal |
5 | DC + output terminal / DC – output terminal |
6 | DC to DC converter |
7 | Intelligent Monitoring Device |
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Table 1: Component list
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5.?? Technical Data
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Max input modules channels | 2-16 |
Input array connection diameter | 4mm2 |
Output and ground diameter | ≤70mm2(ground wire 16mm2) |
Internal fuse rating | 1000V DC fuse, 12A |
Input current of each channel | 10A |
Communication connection | RS485 |
Communication power supply requirements | Self-power |
Waterproof level of the box | IP65 |
Net weight | ? |
Size(W×D×H) | ? |
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? 6. ??Installation and Maintenance
Check the product to make sure whether there is a damage caused by delivery.
Although the product is carefully checked and tested before shipping, but components maybe damaged during shipping, so the product should be checked before installation. Please contact the transportation company or directly contact with Wuxi Longmax Technology Co., Ltd ?if there is any component damage. Please provide the picture of damaged component, and we will provide the fastest and best service.
Basic installation requirements
The Intelligent PV array combiner boxes with monitoring device can be installed outdoor. But as it contains electronic equipment, it is required not to be installed in wet location.
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Configuration of input circuit
Photovoltaic combiner box are allowed to have access2- 32 channel PV modules.
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Size of terminal and connecting wire
The user can choose appropriate wires by checking different waterproof terminals shows in the table below.
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?Item | Specification | Wire suggested |
DC+ input | MA-20-H2-06G | 4mm2 PV wire |
DC- input | MA-20-H2-06G | 4mm2 PV wire |
DC+ output | MA25-16G | 35~70mm2 PV wire |
DC- output | MA25-16G | 35~70mm2 PV wire |
Ground | MA20-14G | 16mm2 |
RS485 | MB16SL-08G | 6mm2 |
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Table 2:? Wire suggested
Adopt standard lock to open and lock the box
This box uses the international general standard locker, its high safety performance can guarantee the sealing of box.
Input connection
Photovoltaic components input is located at the bottom of the cabinet, PV combiner box can connect 12 strings input at most. Pay attention that PV modules output of connection is located in the bottom of the box, white wire is used to access positive PV modules, black wire is used to access negative PV modules. The user needs to unscrew gland, and disconnect all fuses and let the breaker off, then access connection to fuse holder by 1.5nm screwdriver, and finally tighten all waterproof terminals.
Output connection
Combiner box output is on the left of the bottom, as can be seen from the picture output including DC positive, DC negative and ground, grounding wire is yellow green. The communication wire is also at the bottom of the box, beside the grounding wire. The user needs to unscrew gland l before wires are connected, after access output wires, then tighten the screws, and finally tighten all glands.
Picture : Input and output terminals connection
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1. How to change fuse
Step 1: Operation the circuit breaker
Step 2: Open the fuse holder
Step 3: Change the fuse (he fuse replaced must be the same as the original model.)
Step 4: Close the fuse holder, switch on the circuit breaker.
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?2. How to change SPD
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If fault occurs during the warranty period, Longmax will maintenance or replace the product for free.
¤ The original unqualified product should be returned to the manufacturer.
¤ The customer shall give the company reserve the reasonable time to repair the equipment.
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Intelligent PV array combiner boxes with monitoring device , Intelligent PV array combiner boxes, Intelligent solar combiner boxes
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Project:2MW PV power plant , Miyako-jima,Japan
Project completion date: January 2013
Photos:
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Translation in English:
Users report of Longmax solar combiner box
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We employ the solar combiner box made by Wuxi Longmax Technology CO.,LTD, in the project? ________________
The solar combiner boxes have been running stable, without any fault since it is installed. Longmax’ solar combiner boxes are easy installation and maintenance. Their design is very reasonable and quality is very good, All exceeded the national standard. Wuxi Longmax Technology CO.,LTD ?also has good engineering and after-sale services.
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Hope Longmax keeps working hard, go abreast with the trends of photovoltaic industry and provide better products.
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Company:
Stamp:
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Product Detail
Packing and loading pictures:
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Logistic
In time delivery time: Relying on our ERP management and strong manufacturing capacity, we are able to control our lead time in 2-15 days. Guarantee your business free of trouble.
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Strong Packing ensure? transportation safety and? meet the request of customs from different countries.
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Logistic service: Cooperating with world leading logistic partners, our professional international service team will be pleased to offer you our best service.
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Quick and professional after-sales-service:
AFTER-SALE SERVICE
1.? We offer the trouble-shooting manual of our machines to the buyer step by step.
2.? We offer the free-cost training to the buyer in our manufactory, or we dispatch our service man to buyer’s country for training. (but all cost of our service man including round-trip air ticket, traffic cost in buyer’s country, cost for room
and board in buyer’s country, etc. will be charged with buyer. Or we make an agreement for it)
3.? Via telephone, fax, internet or other communication methods we offer the timely technical support or service to our buyer.
4.? Ordinary troubles or malfunctions should be solved within 3 workdays after receiving the detail report from buyer. In principle all troubles should be solved within 10 workdays.
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Read More
Wuxi Longmax Technology Co., Ltd.
Solar Combiner Box,Solar PV Combiner Box,PV Combiner Box
Address: Wangzhuang Industrial Park No.1 ,Phase 2, Region 3 ,Hi-Tech District ,Wuxi,Jiangsu,P.R. China,
Wuxi, Jiangsu
China, 214000
Tel: 86-510-85347588
Fax: 86-510-85347588
