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Generally, the online UPS system can be divided into three main application areas.

1.information technology
Commercial UPS has been closely integrated with information technology, the bidding specifications of UPS equipment for information technology do not need special technical requirements. Telecommunications, banking, insurance companies and large enterprise data centers are typical examples of commercial UPS applications. In these applications, the interruption of the AC power supply may result in the interruption of data processing and telecommunications transmission, but usually does not cause direct damage to people or property.

2.Critical program or process control
For decades, the design and application of industrial UPS system to the key program or process control applications has accumulated rich experience. In the application areas, the load side of the AC power supply interruption or instability, may cause dangerous chemical instability failure, or cause huge damage to the production system and even the surrounding environment. Petrochemical complex and power station are typical examples of the use of chemical or steam processing operations. In this process, if the power supply is interrupted, it will be dangerous. Due to the possible risks and losses from the control power supply, it is necessary to design a special UPS system for the application of the industrial environment, and the performance test is more stringent than the commercial UPS.

3.Common program or process control
We call this the middle part of the application the light industry. Even if the AC power is interrupted in the processing operation, the application types are not fatal. In these processes, UPS’s failure or instability may result in the loss of finished products or the re arrangement of product equipment for the hundreds artificial hours. The drug and food and beverage industry will be an example of the light industry. In these areas, the high reliability of industrial UPS system will effectively avoid the above situation. Of course, due to the popularity of commercial UPS, in these areas also have applications.

MPS9335 30-150KVA Modular UPS With Battery 

The advantages of string inverter

1.Modular design, its advantage is not affected by the difference between modules, effects of shade, while reducing the best working point of photovoltaic battery and solar system inverter components do not match the situation, increase the maximum generating capacity.
2.In the rainy day, foggy area, can generate power for a long time.
3.String inverter with small volume and light weight, convenient handling and installation, do not need specialized tools and equipment, also do not need a special distribution room, can simplify the construction, reduce the area, DC line connection does not need DC bus box and DC power distribution cabinet.
4.Low power consumption, low impact of failure, convenient replacement and maintenance.
5.Multi path MPPT tracking, reduce the impact of the block and the direction, and when a fault occurs, does not affect the power generation, high reliability.

Disadvantages of string inverter

1.More electronic components, power devices and signal circuits on the same board, difficult to design and manufacture.
2.The electric power device of small gap, not suitable for high altitude area.
3.Outdoor installation, is very easy to cause the shell and heat sink aging exposed to the weather.
4.When a plurality of solar energy inverters in parallel, total harmonic is high, THDI of single inverter can control to more than 2%, but if more than 40 sets of inverter in parallel, total harmonic superposition and difficult to suppress.

Excellent electrical performance

Low input harmonic current: <5%
Output voltage high precision: <2%
Overload capacity: 110 ~ 130% of the load can be overloaded for 10 minutes, 130 ~ 150% of the load can be overloaded for 1 minutes
Charging current: 4.5A (each module)
Support frequency conversion mode 50Hz input, 60Hz output or 60Hz input, 50Hz output

Digital control

High frequency UPS adopts the most advanced DSP as the central controller, its powerful computing capabilities can realize the traditional function in most of the UPS now by software, not
only greatly improve the accuracy and reliability, and easy to upgrade and maintenance.

Intelligent charging

Modular high frequency machine adopts advanced three phase charging method:
The first phase of large current is constant current charging, fast recharge about 90% of the electricity;

Second phase is pulse charging, can fully charge the battery;

Third phase is the constant pressure to maintain, to ensure that the electricity does not lose.

This can be a good balance between fast charging and prolonging the life of the battery, saving the battery cost for the user.

N+X wireless parallel redundancy

Using advanced wireless parallel control technology, compared to the wired parallel to reduce the single point of failure ( can work even if the steady-state operation of the line fault), but also
improve the reliability.

Parallel battery

Modular high frequency UPS adopts the double cell input structure and advanced control strategy, and the 6 kva online UPS system fully share the same set of battery, which greatly saves the cost of the battery.

HP9116C 6-20KVA High Frequency Online UPS

Advantages of the solar power system
1.Sunshine everywhere, not subject to geographical restrictions.
2.Safe and reliable.
3.No noise, no pollution.
4.Do not consume resources.
5.No need to set up long distance transmission line.
6.The installation is simple and convenient, and the construction period is short.
7.Make financing easier.
8.Easy to implement step by step.

Disadvantages of the solar power system
1.Restricted by time period, geographical position and weather condition.
2.Light conversion efficiency is low.
3.High cost.

1.The extension of modular Uninterruptible Power Supply is better
Tower type UPS need to buy a new expansion machine, the machine should be installed in place of the system in other UPS to bypass the new machine access system, the whole procedure is not only high investment, long time installation, existing power interruption risk load power down, when incorporated into the new machine because the entire system is in the bypass state. The modular UPS as long as the initial planning of the distribution system, you can increase the module to match the load of the upgrade, and in the expansion process to protect the original load of uninterrupted power supply.

2.Modular type UPS is easy to transport and install
Tower type UPS needs to install and transport as a whole, large single UPS will be more difficult. Such as the capacity of 800kVA UPS weight is about 1500kg, the volume of more than 3 cubic metre, the tower type UPS will be lack of transport channel, transportation difficult to transport because of its high weight, modular UPS can be a separat to handling module and frame, on the other hand, most of the models can be transported separately, the problems can be easily solved.

3.The practical operating efficiency of modular UPS is high
At present, high frequency tower type UPS and modular UPS can achieve 96% of the highest efficiency value, but this is in the load rate of 50% or more. And as mentioned before, because the system is redundant and advanced planning, UPS load rate of common conditions in the 20~40% or so. High frequency tower type UPS can only achieve the efficiency of 94~95% under this condition, while the mainstream modular UPS generally have a “dormant module” characteristics based on a certain system redundancy, can sleep a certain number of modules (can be manually or automatically), work rate is relatively high in the area. So UPS system, which remain in the vicinity of efficiency the highest point of 96%.