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The solar MPPT controller of the solar power system only needs the protection of induced lightning (electrostatic induction, electromagnetic induction) and lightning wave. The protection of the controller is to install an over voltage protector in the junction box of the solar array array and the input end of the controller. The input end of the inverter and battery in parallel, and the output end of AC power distribution cabinet is connected with the input end of the inverter, so the protection is in the output of the inverter (i.e., between the fire line and the zero line and the ground, and between the front line and zero line) install overvoltage protector. At the same time, the equipment in the computer room is reliably grounded, and the same grounding potential as the grounding body of the array and the outer frame is arranged to prevent the invasion of the lightning wave and the induction thunder. The protection of AC power distribution cabinet is at the output end of AC power distribution cabinet, that is, the overvoltage protector is installed between the live wire of the overhead line and the ground, between the zero line and the ground, and between the fire line and the zero line. This lightning protection devices all installed in the rain and dust, fixed on the overhead wire rod, fixed position from the overhead ground as close as possible.

The protected device in controller is mainly IGBT, which is generally greater than 500V between the positive pole and the DC voltage, the pulse pressure is 1300V, the normal working voltage between positive and negative pole is DC 260V (up to 390V in a very long time), to achieve the purpose of lightning protection, it is impossible to perform 1 level protection in the 12v mppt solar charge controller, we must use two levels of protection plan:

1 level lightning protection is carried out in the transmission line box behind the battery board, and an overvoltage protector is respectively arranged between the positive pole to the ground and the negative electrode to the ground; An overvoltage protector is arranged between the positive pole to the ground and the negative electrode to the ground at the input end of the MPPT solar charge controllers; The distance between the line box and controller behind the battery board shall be greater than 10m.

SOROTEC Solar MPPT Charge Controller 60A 3200W 12V 24V 48V

1. Intelligent maximum power point tracking technology increases efficiency 25%~30%
2. Compatible for PV systems in 12v, 24v or 48v
3. Three-stage charging optimizes battery performance
4. Maximum charging current up to 60a
5. Maximum efficiency up to 98%
6. Battery temperature sensor (BTS) automatically provides temperature compensation
7. Support wide range of lead-acid batteries including wet, AGM, and gel batteries
8. Multi-function LCD displays detailed information

Outdoor telecom stations are mainly built in towns, rural areas, mountainous areas, suburban areas and urban outdoor environment, so as to eliminate the signal blind spots in these areas, alleviate the pressure of network capacity or improve the quality of service. The power grid environment in these areas is more complex, and even power blackouts, sudden blackouts and other situations are common. In order to ensure the reliable and stable operation of the telecom network, operators need to use special outdoor communication power supply or outdoor UPS. Due to the special environment of outdoor UPS, the quality and performance of outdoor UPS are different from those of indoor power supply. At present, operators in the choice of outdoor power supply products, should evaluate mainly from the following three aspects.

The reliability of power supply
Telecom power supply products is mainly to provide stable power, pure and uninterrupted to the telecom network, protect the equipment from power pollution, protect key business system can run in case of a sudden power failure, which requires equipment with high availability and reliability. Especially for UPS outdoor, the power grid environment they faced is more complex. It is faced with many problems, such as power outages, voltage spikes, voltage surges, frequency drift, harmonic interference, voltage fluctuations and so on. Therefore, the quality of the components is required to be higher, in order to ensure the service life of the product, and the adaptability to the grid is stronger, and can play a better role in stabilizing the voltage, filtering and purifying the current. In addition, the UPS itself should have a certain self-protection and fault diagnosis capabilities, such as lightning protection, short-circuit protection, etc., in order to better provide power support for the telecom network.

Protective performance
This is the basic difference between the outdoor UPS and common indoor power supply equipment, due to the it is placed under the sunshine, wind and rain outside, easily affected by environmental temperature and humidity, dust, salt fog and other conditions. As outdoor rated UPS, the shell protection level required by the industry shall be IP55 and the shell of the outdoor battery cabinet shall be up to IP44.

Energy saving and environmental protection
Energy saving and emission reduction is not only a national industrial policy, but also an enterprise development strategy. To build a green telecom network, the basic requirement is to use energy-efficient, environmentally friendly and safe infrastructure products. Operators in the choice of outdoor power supply equipment, can consider from save energy, land, environmental protection and other aspects: Energy saving can reduce energy consumption and have a direct effect on reducing operating costs; Saving land can reduce the investment of the construction of the site and reduce the cost of the enterprise land; And environmental protection is particularly important, outdoor UPS and environment is in close contact, directly affect our living environment, it must meet the national and industry standards in the electromagnetic radiation, audio noise, pollution and other aspects of materials.

HW9110E Routine 1-10KVA High Frequency Online Outdoor UPS 

Model: 1-10KVA
Nominal voltage: 220/230/240VAC
Nominal frequency: 50/60Hz
Output Power factor: 0.7/0.8

■SOROTEC Outdoor Intelligent High Frequency Online UPS provide continuous pure sine wave AC power supply for outside communications / network equipment.

■Double-conversion online design, high temperature resistant, anti-cold, sealing level for IP55; With the wide range of input voltage and frequency of input window (-45% +35% rated voltage and ± 10% rated frequency), in many remote areas of China after a severe test of the grid.

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Solar inverter in accordance with the installation environment can be divided into indoor inverter and outdoor inverter. Shell protection grade of indoor home solar inverter is low (usually IP20), forced air cooling is often adopted, higher requirements for installation site (requires a good ventilation system), the existing buildings need to be reformed to meet the requirements of installation environment, high cost; The outdoor solar inverter with natural cooling mode has high protection level (usually IP65), and the required environmental modification is few and the cost is low; At the same time, because the inverter is installed outdoors, the noise caused by the operation will be greatly reduced the impact on the users, but it needs good equipment protection.

On the other hand, the choice of the size of the inverter can be optimized according to the installation conditions. If the installation site is not clear in the initial design, the small power solar inverter should be chosen as possible, to realise the multi-channel independent power tracking, choose micro inverter to achieve the MPPT of single solar panels when necessary, so as to avoid the later problems caused by the space is not large enough, or the imbalance of power series not enough rules etc..

SHW48200 48VDC Telecom Station Solar Hybrid System

■Adopt advanced MCU microprocessor control technology.
■Advanced MPPT Technology,high converting efficiency higher than 97% for minimizing energy loss.
■Reversed current protection at night, over voltage and reverse polarity protection.
■Capable of selecting different charging mode for various types of batteries.
■Protection degree:IP55
■Industy-leading power density compact size and high reliability;
■Doorframe designed with waterproof structure, posted on the seal and equipped with waterproof lock on the door double insulation design;
■Cabine adopt quality galvanized sheet or aluminum coated steel sheet as material, surface coating anti-UV power;
■Suitable for outdoor installation.

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When choosing solar inverters, first of all, should be paid attention to the identification of the packages and products, and to identify the input voltage range, voltage type and maximum input current of the solar inverter; Output voltage level, voltage type, frequency; Maximum continuous operating current, maximum output power, and inverting efficiency. Secondly, the data should be complete, should include at least the following: product details (including technical specifications), product installation instructions, instructions and maintenance instructions.

Solar panel inverter products as a general industrial products, it is recommended that professional personnel guide the use of professional and technical personnel. Non professional person purchased the products, should read product brochures and other documents carefully and strictly in accordance with the documentation requirements of installation, need to contact the manufacturer when in doubt, ensure the correct installation and use.

If purchase imported products, should pay attention to whether the statement is suitable for domestic standards, especially should pay attention to the output voltage and frequency of foreign products is matched to access to the domestic public power grid. In addition, also need to pay attention to that there are obvious differences between domestic and foreign standards for the over voltage protection and other requirements, when use the foreign products, there may be security risks, not recommended for non professionals to buy imported products.

For the professional purchase of solar power inverters, in addition to the maximum conversion efficiency marked on the nameplate, the MPPT is also need pay attention to, and the power quality during operation in low power (50% rated output power and below) , and the over / under voltage protection parameters. And according to different use environment to buy and use, such as: Household products should pay attention to electromagnetic compatibility and noise; Conventional products are suitable for installations where the elevation is not more than 1000m. The products used in high altitude areas need to lower the capacity; The temperature range of conventional products for the -25℃～+60℃, the use of extremely low temperature and high temperature area of the product should pay attention to the climate adaptability, for normal use with sufficient safety margin.

IG3115CT 1-6KW Pure Sinewave Inverter (1000w pure sine inverter,1000w inverter pure sine wave,pure sine wave inverter 1000w)

1. Pure Sine wave Output
2. The charging current is big up to 70 A
3. Output Power Factor is 0.9-1
4. Auto change AC-DC
5. Full automatic and silent operation
6. Automatically transfer between battery and line modes
7. Microprocessor control guarantees high reliability
8. Remote control function
9. Four-steps intelligent charging control to recharging time
10. Bypass and bypass voltage regulation function
11. Could be setting frequency by LCD display for 50hz or 60hz

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The rapid development of telecom technology, great changes have taken place in the internal and external environment of the telecom industry, as the basis of data center, UPS ushered in opportunities in cloud computing, virtualization, big data, cloud storage and other aspects. With the continuous expansion of data telecom network and the completion of various service, the technical transformation of power supply and the improvement of power supply maintenance have become the focus of telecom industry. In the telecom network, the higher the scale, the higher the grade, the more critical the business, the higher the requirement of the power supply quality. For example, the operators of the international data center (IDC), large telecom station, this kind of computer room is often required to obtain 365 days 24 hours of uninterrupted and stable, pure power, so it must be used with high reliability and high availability online UPS system. If the telecom network failure due to power problems, even if only a minute, can also caused loss of economic and corporate reputation. Therefore, the business nature of the telecom industry determines its high demand for power supply.

In addition, in order to save the operation and maintenance and energy costs, operators must also pay great attention to the level of data center UPS intelligent control, maintainability, energy efficiency and other aspects of performance. At present, the top three Chinese operators in order to fully protect the quality of the network, are strictly control the construction of the computer room. Environmental protection, energy saving, high efficiency and intelligence become the requirements of the new generation telecom data center for UPS.

HP9116C Plus 1-3KVA Online High Frequency UPS

1.Battery voltage can be choice depend on capacity , can satisfy different requirement.
2.Convenience to get more back up time and lower system invests
3.Convenience to save cost of battery
4.Intelligent battery monitors
Charge current can be adjust
5.Standant charge current 4A
6.Support more discharge time and more capacity battery for 8A charger
Input topology design
7.Support three phase input or single phase input for three phase online high frequency UPS
8.Super wide input voltage and frequency range suitable for bad power electirc environment
9.Digital control DSP technology and best power component make the system safe and reliable

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