Pure sine wave inverter power supply is specially designed for power plant, substation, communication industry, automation control equipment, solar energy, oil field, wind energy, new energy and so on. It is mainly applied to places where load equipment has high requirements to power quality. Such as power telecontrol, RTU, power line carrier, monitor, program-controlled switchboard, computer room, network, server and accident lighting. If the AC input is broken down, the DC screen or the external battery cabinet prepared by the power system and the telecommunications system will supply a long and uninterrupted power supply through the inverter for the load equipment. If the DC screen is broken down, the inverter overloads or failed, the system will automatically switch to the bypass power supply, which ensures the continuity of the system power supply. The use of pure sine wave inverter power supply to important load equipment in DC power station has the following advantages:
1.Avoid repeated investment in battery pack, reduce system maintenance and reduce system operation cost.
2.The DC screen of power system and telecommunications system usually uses valve controlled sealed battery. Because of the high reliability and long life (10~15 years) of the DC screen, the DC screen is used for power supply, and the reliability and life span are greatly improved. The battery in conventional UPS is often without maintenance and monitoring. It is easy for battery to be damaged, but it can not be detected in time, so as to reduce the running cost of the system.
3.Due to the large capacity of DC screen, the power supply of inverters can provide enough long AC power supply after the power grid is cut off.
■Pure sine wave output ■The charging current is big up to 85 Amp ■Output power factor:s 0.9-1 ■Well accept generator’s output ■Full automatical and silent operation ■Automatically transfer between battery and line modes ■Microprocessor control guarantees high reliability ■Remote control function ■Four-steps intelligent charging control to recharging time ■Bypass and bypass voltage regulation function ■Could be setting frequency by LCD display with color screen ■Battery type and charge current can be select
1.Check the power equipment regularly. Pay attention to the environment temperature and equipment operation status of the computer room, use the power supply monitoring system to monitor all kinds of operation parameters of the power equipment in real time, and find out the problems in time.
2.Power inspection content. Whether the configuration of the module is reasonable; Whether the charge current limit is correct or not; System AC voltage and current, DC floating charging voltage, load current, battery supplementary electric current, fan running status and lightning protection device status; Whether the running parameters of the monitoring module are correct or not; Whether the temperature compensation is normally used; Whether the module’s average flow is less than 5%; Battery insurance and connection bar temperature rise; Whether the battery is climbing acid, leaking or bulging; The ambient temperature of the machine room, etc.
3.The power supply monitoring system is used to monitor the power supply equipment in real time, understand the fault, conduct remote monitoring and solution, and assist the on-site processing. When dealing with the fault of power supply equipment, it is necessary to firstly judge the cause of the power disturbance and the fault location, and then take the corresponding methods and measures to deal with the power failure.
1.True double-conversion 2.DSP technology guarantees high performance 3.Output power factor 0.9 4.Wide input voltage range (110-300 VAC) 5.Active power factor correction in all phases 6.50Hz/60Hz frequency converter mode 7.ECO mode operation for energy saving 8.Accepts dual-mains inputs 9.Emergency power off function (EPO) 10.Generator compatible 11.SNMP+USB+RS-232 multiple communications 12.3-stage extendable charging design for optimized battery performance 13.Adjustable battery numbers 14.Maintenance bypass available 15.Optional N+X parallel redundancy 16.Optional isolation transformer offers full isolation and complete common mode noise rejection
Low frequency UPS and high frequency UPS are distinguished according to the operating frequency of the design circuit of UPS. Low frequency UPS is designed on the basis of traditional analog circuit, composed of thyristor (SCR) rectifier, IGBT inverter, bypass and power frequency step-up isolation transformer. Because of its rectifier and transformer working frequency are 50Hz, so called low frequency UPS.
High frequency UPS is usually composed of IGBT high frequency rectifier, battery converter, inverter and bypass. The IGBT can control its opening and closing by adding control to the gate. The switching frequency of the IGBT rectifier is usually from thousands of Hz to tens of kHz, even up to a hundred kHz, far higher than the low frequency UPS, so it is called high frequency UPS.
GP9335C 10-800KVA Low Frequency Online UPS
■Use advanced 6th generation DSP and full digital control technologies to realize higher system stability. ■Output power factor is 0.9, carrying capacity than conventional UPS with 10% above, as users reduce investment cost. ■Advanced distributed active parallel technology can realize parallel operation of 6PCS UPS units without the need of centralized bypass cabinet. ■6-inch extra large LCD that can display 12 language ( Chinese ,English,Russian,Spanish,French and so on). ■Extra wide input voltage and frequency range make it adapt to severe power grid environment. ■Intelligent battery management maintains battery automatically to prolong the battery life. ■Standard input/output filter improves the system EMC performance. ■Extra strong capability to withstand output overload and short circuit, ensuring the system stability and system safety under extreme conditions. ■Layered independently-sealed ventilation channel and re-dundant fan, circuit boards with protective paints and a dust filter embedded make it highly efficient to dissipate heat and protect the product effectively under severeenvironment.
As a power solution expert SOROTEC is dedicated to continuously designing, manufacturing, marketing, and introducing a complete line of UPSs, inverters, and solar power products to the demanding power market.
We sincerely invite you to the SNEC PV POWER EXPO 2018 at the Shanghai New International Expo Centre on May 28-30， 2018.
SOROTEC will present innovative green power products in the exhibition.
We are looking forward to your coming at E6-129 130. Our team is ready to serve you by professional attitude and excellent team spirit. Hall: E6 Booth N.O.: E6 -129 130 Date: May 28-30 2018 Venue: Shanghai New International Expo Centre
The main task of the solar inverter heat radiation system is to select a reasonable heat dissipation and cooling method, to control the temperature of the electronic components under the specified value, to provide a low heat resistance channel between the heat source and the external environment, so as to ensure that the heat can be sent out smoothly.
(1)Loss calculation
To design the heat dissipation system, the heat of the inverter must first be calculated. The main heat generating devices of the inverter are the power switch tube and the filter inductor, and the transformer. The efficiency of transformers and inductors can be customized by consultation with manufacturers. The loss of the power switch tube can be calculated by software simulation. The loss is related to the output current, the DC voltage, the power factor, the overload coefficient, the modulation coefficient and the output frequency.
(2)Selection of heat dissipation method
The thermal design of electronic equipment should begin with the method of determining the cooling method of the equipment. The selection of cooling methods should be based on the heat flow density, temperature rise requirements, reliability requirements as well as the size, weight, economy and safety, and choose the simplest and effective cooling method. Heat sink is added to forced air cooling according to heat flux and temperature rise. The forced air cooling is reliable, easy to maintain, and relatively low in cost. It is a better cooling method, so it is widely used in the cooling system of electronic equipment which needs heat dissipation, and it is also the main cooling form of high power devices.
(3)Thermal design steps
The design of forced air-cooled heat sink with radiator is very complicated. Here are the basic methods and steps for this relatively complicated situation. A.Considering the factors such as equipment structure, wind pressure, cost and heat dissipation efficiency, combined with the simulation results of thermal simulation software, determine the structural parameters of the radiator. B.According to the heat balance equation, the fan is initially determined by calorific value. C.The thermal design of the whole machine is accomplished by using a fan and designing a reasonable air duct. D.The thermal simulation software is used to simulate the thermal design. If the final component temperature exceeds the allowable value, then the structural parameters of the radiator need to be adjusted, and the fan need to be reselected and the above steps are repeated. The final design makes the device temperature below the allowable value and achieves the optimization of the heat dissipation system.
(4)Radiator design
The design of the radiator should take into account the structural requirements, cost, wind pressure, heat dissipation efficiency and processing technology of the electronic equipment. The fin of radiator is suitable for thin, but too thin is difficult to process.When the radiator size is fixed, the smaller the fin spacing is, the smaller the thermal resistance. However, if the spacing is too small, the wind resistance will be increased, and the heat dissipation will be affected. Increasing the fin height can increase the heat dissipation area, that is, increase the heat dissipation. However, for the straight rib of the same section, the heat transfer will no longer increase after the height of the rib is increased to a certain extent. If the ribs are further increased, the efficiency of the ribs will decrease sharply and the wind resistance will be increased.
(5)Air duct design for the whole machine
The basic principles for the design of the wind tunnel are as follows. A.The air flow and flow rate through the fin of the radiator should be increased as far as possible, so as to improve the heat dissipation effect. B.It is necessary to reduce windage resistance to prevent excessive pressure loss. C.The outlet air duct should also ensure that the heat flow can be discharged smoothly.
(6)Thermal design simulation
The software can simulate the thermal status of the system more accurately, and the working temperature of each component can be predicted in the design process. This can correct unreasonable layout and achieve a good layout, thereby shortening the development cycle of the design, reducing the cost and improving the success rate of the product. The heat of the electronic equipment can be effectively controlled, so that it can work within the specified temperature limit, thus improving the reliability of electronic equipment.
■Pure sine wave output ■Self-consumption and Feed-in to the grid ■Programmable supply priority for PV, Battery or Grid ■User-adjustable charging current and voltage ■Monitoring software for real-time status display and control ■Parallel operation up to 6 units only for 3K/4K/5K models ■Programmable multiple operation modes: Grid-tie,off-grid and grid-tie with backup
On Off Grid Hybrid Solar Power Inverter with battery pack,high frequency pure sine wave output, PF.=1.0, parallel working Max 6units(30KW) – SSP3119C 3-5KVA
