We will attend POWER-GEN Africa 2015 from July 15th - 17th 2015. Welcome to visit us for further business.We will show our newest UPS and solar inverter there ,and will have some gifts for you !
Date:July 15th to 17th 2015 10:30-18:00
Booth No:L23-3 
See you at POWER-GEN Africa 2015, Cape Town International Convention Centre, Cape Town ,Republic of South Africa!
And welcome to visit our company the website:http://www.soropower.com smile 表情符

Output waveform classification

Output waveform classification
(1) square wave inverter
AC voltage square wave inverter output waveform is a square wave. Such inverter inverter circuit used is not exactly the same, but the common feature is relatively simple lines, a small number use the power switch. Design pure sine wave online ups is generally between one hundred watts to kilowatts. Advantages square wave inverter is: Line is simple, cheap, and easy maintenance. The disadvantage is that due to the square-wave voltage contains a large number of high-order harmonics, resulting in additional losses in the load appliances with core inductor or transformer in on the radio and some communications equipment interference. In addition, these inverters also pressure range is not wide enough, the protection function is not perfect, the noise is relatively large defects.
(2) step wave inverter
AC inverter output voltage waveform of such a stepped wave, a stepped wave inverter output is also to achieve a great variety of different line number stepped difference, the output waveform. Advantages step wave inverter, the output waveform for example, a significant improvement in waves, reducing high harmonic content, when the ladder when you reach 17 or more can be achieved quasi-sinusoidal output waveform. When using transformerless output, high overall efficiency. The disadvantage is that the ladder wave superposition line using the power switch more, some of which also require multiple sets of lines in the form of a DC Ups power manufacturer input. This gives a balanced group with wiring and battery charging solar phalanx were trouble. In addition, voltage step wave radio and some communications equipment are still some high-frequency interference.

The inverter only has straight AC conversion function

The inverter only has straight AC conversion function, also has a maximum limit to carry forward the usefulness and functionality of the solar system maintenance function problems. Summed up the initiative to stop the operation and function of the maximum industrial ups power supply point tracking control function, anti-alone operation function (and network systems), active voltage regulation function (and network systems), DC detection function (and network systems), the DC ground fault detection function (and network systems). Here brief introductions active operation and shutdown function and maximum power point tracking control function.
An initiative to stop the operation and function of the morning after sunrise, solar radiation intensity gradually strengthen, the output of solar cells also increased, when the tasks required to reach the inverter output power, the initiative to start the operation of the inverter. After entering operation, the inverter output will be at all times the solar cell module custody, only the output power of the solar cell module is greater than the inverter output Outdoor cabinet required for the task, the inverter will continue to operate; stop until sunset, even rainy days inverter can operate. When the output of solar modules become smaller, the inverter output is close to 0, the inverter will constitute standby mode.
2, the maximum power output of the solar tracking control function module is included with the intensity of solar radiation and the solar cell module itself temperature (chip temperature) and change. Else because the solar cell module having a voltage drop with the increase of the current characteristics, and thus be able to obtain the best task exists the maximum power point. Changes in the intensity of solar radiation is obviously the best task point is also in transition. Related to these changes, the task has been to make solar modules at maximum power point point, the system always get the maximum power output from the solar components, such restraint is the maximum power point tracking control. Most important feature of solar power inverter system that covers the use of the maximum power point tracking (MPPT) in this function.

UPS is the battery (maintenance-free lead-acid batteries, mostly) and the host is connected to the host via an inverter module converts the DC circuit mains system equipment

UPS is the battery (maintenance-free lead-acid batteries, mostly) and the host is connected to the host via an inverter module converts the DC circuit mains system equipment
Power supply is mainly used for a single computer, computer network systems, or other power electronic devices such as solenoid valves, pressure transmitters provide a stable, uninterrupted
Online means regardless of the grid voltage is normal, the load to go through with the AC voltage inverter circuit, inverter circuit that is always active, on-line double conversion UPS generally structure. The so-called double-conversion high frequency online ups refers to normal working hours, power through the AC / DC, DC / AC conversion twice and then supplied to the load.
This UPS uninterruptible power supply so that the inverter has been in working condition, it is first converted by circuitry external AC to DC, and then through the high quality of the inverter to convert DC into high quality sine wave AC output to the computer. Online UPS power supply situation in the main function is regulated and prevent radio interference, while the battery charge management; backup during power outages using a DC power source (battery) power to the inverter. Since the inverter has been at work, so there is no problem switching time for the power supply, there are strict requirements of the occasion.

Installation of pipe clamp

Installation of pipe clamp
(1) pipe clamp plate is generally directly or via angle bracket welded structures, etc., in the concrete floor or wall surface side of the bracket with expansion bolts;
(2) pipe clamp installation should pay attention to leveling, is installed on the same surface height;
(3) pitch pipe clamp: When the diameter ≤φ10, about 0.5 to 1 m; diameter φ10 ~ 25 at about 1 to 1.5 m; diameter φ25 ~ 50 at about 1.5 to 2 meters, but at a right angle bend, both sides should each with a hose clamp.
Pre-installed
(1) The fittings and equipment, pipes and pure sine wave online ups piecewise connection, until completion of all pre-installed;
Installation Method (2) pipe fittings are detailed in Chapter 4;
(3) while the hose clamp plate welded to the structural member or holder, not the tube welded pipe clamp or bracket;
(4) pre-installed and checked passing mark on the line print tie, one of a number tabulated spare. After removing the pipe cleaning, restoration by number.
Precautions
(1) Before installing the pipe can press all the requirements in Chapter 9 pickling, especially steel and bite type fittings connection should be pickled, then ferrule tube end pre-fastened;
(2) All fittings should be cleaned with kerosene to be installed inside the o-ring should be temporarily removed custody, to be put on when the formal installation;
(3) To keep the oil port construction pumps, dispensers and other equipment, Home ups, pipe end and other openings to clean, can not let water, dust and other foreign matter from entering;
(4) should be in a free state pipeline laying, pipe welding after not apply excessive force fixed radial force and connections;
(5) bearing hole should check in advance, whether inside the oil flow, whether the oil port with threaded fittings to match.

 

Pipe cutting

Pipe cutting
(1) with a special cutting machine sawing or cutting pipes and other equipment, and definitely not broken with solvent (such as flame cutting) or cutting wheel;
(2) the cut should be smooth, flat section is not greater than 1 mm, and the tube is not greater than the vertical axis of the 1 degree;
(3) remove the chips and burrs with a file, scraper and so on;
(4) with clean compressed air or other means to remove the tube attached debris and rust;
Tube bending
(1) with cold-formed pipe bender, not bending (large diameter pipe elbow alternatives available ELBOW), bend radius is more than four times the diameter;
(2) ovality (path length change) bend diameter of less than 10%, and can not appear wrinkles;
(3) If there are joints bend pipe end, there should be a straight pipe the pipe end Ups for home is connected, in order to avoid affecting the installation;
Welded pipe and industrial ups power supply
(1) using the GTAW or TIG welding after filling back arc. When the pressure exceeds 21mpa, should also inside the tube through 5l / min argon;
(2) pipe wall thickness> is 2mm, the outer should be cut 35 ° bevel and stay at 3mm gap counterparts; the tube wall thickness ≤2mm, not cut groove, leaving their counterparts at 2mm gap;
(3) When the counterpart of the tube axis must coincide, the wrong side of the wall thickness of less than 15%, the skew of less than 1: 200

 

Installation Precautions high pressure hose fittings

Installation Precautions high pressure hose three phase online ups
(1) hose in a mobile or stationary, and can not bend over, it can not be bent at the root, at least to start bending at 1.5 times its diameter;
(2) hose moved to the extreme position not pull it too tight, should be more relaxed;
(3) try to avoid the hose twisting deformation;
(4) hose as far as possible away from the heat radiating member, fashion necessary insulation boards;
(5) Avoid hose external damage, such as the use of the same long-term friction surface of the member;
(6) If the hose caused by excessive weight deformation, should support members.

 

A DC voltage to be consistent

A DC voltage to be consistent
Each inverter has a DC voltage value of the access, such as 12V, 24V, etc.,
Inverter
Asked to select the battery voltage must be consistent with the DC input voltage of the inverter. For example, 12V 12V battery inverter must be selected.

2, the inverter output pure sine wave online ups must be greater than the use of electrical power, especially when starting power for large appliances such as refrigerators, air conditioners, but also to stay bigger margin.

3, the positive and negative must be connected correctly
Inverter DC voltage marked access positive and negative. Red is positive (+) and black is negative (-), also marked on the battery positive and negative, red is positive (+) and black is negative (-), must now take the time to connect the positive (red pick red) and negative to the negative (black pick black). Cable diameter must be rough enough, and to minimize the length of the cable.
4, should be placed in ventilated, dry place to guard against rain, and with the objects around distance of more than 20cm away from flammable materials, or cover other items should not be placed on the machine, the ambient temperature is not greater than 40 ℃ .
5, the charge can not be performed simultaneously with the inverter. That will not be charged when the inverter output plug into the electrical circuit of the inverter.

Pre-installed piping

Pre-installed piping
1. Introduction pipeline
(1) two-director and branch pipes: From lubrication pump out until all the oil inlet distributor, relatively high under pressure. Usually cold drawn seamless steel pipe, the material is 10 or 15 gauge steel. Severe corrosion of the pipe must not be used;
(2) to the pipeline: from the distributor to all lubrication points out the inlet (bearing hole), under pressure is relatively low. Usually drawn copper, easy to bend when the pipe. There is also cold drawn seamless steel or stainless steel pipe;
(3) the use of hose high frequency online ups encountered active site connections.
2. The piping layout requirements
(1) pipeline to try to avoid the heat radiation and cooling water temperature is too high or too low, such as spraying of the Department, particularly hose fittings;
(2) piping and other equipment should not affect the operation of the host, to be safe, reliable, easy to work, observations, maintenance;
(3) To smooth vertical and horizontal piping, neat appearance. As little as possible, or small-angle bend elbows, using a large arc, thus reducing oil flow resistance;
When the conflict (4) installation occurs, a small tube let bassoon, low-pressure pipe so that high-pressure pipe;
(5) the pipeline can not be contacted at the intersecting should spaced;
(6) parallel pipe joints should be staggered installation, to avoid affecting the installation and removal;
(7) In order to facilitate disassembly pipeline cleaning, the union should be properly installed, but to use less, reducing the possibility of leaks.
3. Determine the length of the tube
(1) determined in accordance with 8.2 fixed piping path, the length of the tube was measured in the field, pay attention to the size of the bend radius of influence;
(2) make different types of pipe industrial ups system access after effects into account;
(3) to determine the length of the tube should be piecemeal, cut, pre-order to facilitate on-site adjusted according to actual situation, if all of a sudden cut off, the accumulated error occurs when the pipe is difficult;
(4) short pipe cut at all need to try to take advantage of the short tube where, if necessary, can be used to take a long straight pipe joints, joints should be less but not much on the tube segment.

 

The inverter is a DC to AC transformer, which in fact is the process of transforming a voltage inverter.

The three phase online ups is a DC to AC transformer, which in fact is the process of transforming a voltage inverter.
Converter is the grid AC voltage is converted to stable 12V DC output, and the output of the inverter is Adapter 12V DC voltage into a high voltage alternating current of high frequency; likewise two portions are used with more than a pulse width modulation (PWM) technique. At its core is an integrated PWM controller, Adapter using UC3842, the inverter is used TL5001 chips. TL5001 operating voltage range of 3.6 ~ 40V, has an internal error amplifier, a regulator, oscillator, with dead-controlled PWM generator, low-voltage protection circuit and short circuit protection circuits.
Input Interface parts: input part has three signals, 12V DC input VIN, work ENB enable voltage and current control signals Panel DIM. VIN provided by the Adapter, ENB voltage provided by the MCU on the motherboard, its value is 0 or 3V, when ENB = 0, the inverter does not work, and ENB = 3V, the inverter is in normal working condition; and DIM voltage provided by the motherboard, which ranges between 0 ~ 5V, the different values of feedback to the PWM controller DIM feedback terminal of the inverter to the load current will be different, the smaller the value of DIM, the inverter output current greater.

Hydraulic fittings standard

Hydraulic fittings standard
First, the assembly sleeve type pipe joints
(A) the most important part of pre-installed ① bite type pure sine wave online ups, the direct impact on the reliability of the seal. Generally require a dedicated pre-heater. Small diameter joints can be pre-installed on the vise. In practice, as a parent with a connector, the nut, ferrule can be pressed onto the tube. There are straight pipe joints card sets, card sets Straight turning heads, sleeve tee pipe emergency power ups and other types. I found that even in the same factory shipment, these types of connector body tapered hole depth is often not identical result is a leak, and this problem is often overlooked. The correct approach is to end what kind of pipe joint body, connecting the ends of the corresponding pre-installed with the same type of connector, which can maximize avoid leakage. ② pipe end should be flush. After sawing the pipe should be ground flush with the wheel and other tools, and deburring, cleaning with high pressure air blowing before use. ③ When preloaded, you should try to keep the coaxial tube and connector body, if the tube is too large will cause deflection seal failure. ④ preloaded force should not be too much of the inner edge of the ferrule just embedding the tube wall, card sets should not have significant deformation. During pipeline connection, then the provisions of the tightening force assembly. ф6-1 card sets tightening force of 64-1 15n, 16фmmr 259n, ф18mm to 450n. If at the time of pre-deformation serious bite, will lose seal.
(B) Prohibition adding sealant filler. It was sealed in order to achieve better results, put the card coated with sealant, sealant is the result into the hydraulic system, causing clogging of hydraulic components overcast Nigeria and other failures.
(C). When the connecting pipe, the tube should have sufficient deformation margin, to avoid that the tube is subjected to tensile force.
(D) When connecting pipe, it should be avoided by the lateral force, lateral force caused Mifengbuyan over the General Assembly.
(E) When connecting pipe, disposable good should avoid multiple demolition, otherwise it will seal performance deteriorated.

 

Classification pipe fittings

Classification pipe fittings
Hydraulic hose, high pressure ball valves, quick intent odd connector ferrule type fittings, welded pipe fittings, high pressure hoses, transition style fittings, bite type fittings, tee pipe fittings, non-standard pipe fittings , computer ups power supply, angled fittings, rotary fittings, quick connector, stainless steel pipe fittings, copper fittings.
Differences in hydraulic fittings and pipe joints ordinary
Largest and most significant difference is that the hydraulic pressure is large hydraulic pipe joint staggering, hydraulic tubing sudden burst impact oil is great.
Can not be replaced by an ordinary dedicated connector, because the hydraulic pressure is able to withstand a lot of ordinary atmospheric pressure up to 0.5 already dying.
3 hydraulic pipe fittings quick principle
Quick couplers, one is with a one-way valve, one is without a check valve. Application with check valve, check valve and the gas source is connected to the end, when you disconnect the check valve closes automatically when you turn on the active side thimble-way valve is opened. Self-locking is to use the ball embedded in the groove, while the ball is locked by a "cone --- cylindrical" sleeve.

 

To develop solar inverter system, must first understand the solar

To develop solar inverter system, must first understand the solar (PV cells) of different characteristics is very important. PV cell model as shown in Fig. Parasitic resistance Rp and Rs is, in the ideal case of zero and infinity, respectively.
Light intensity and temperature can significantly affect the operating characteristics of PV cells. Current proportional to the light intensity, but the impact of changes in the light of the operating voltage is very small. However, the operating voltage is affected by temperature. Battery temperature will reduce the operating voltage, but the current generation of little influence. The figure below illustrates the effect of temperature and light on PV modules.
Effect of temperature and light on the PV module
Effect of light intensity on the battery output high frequency online ups greater than the impact of temperature changes. This is all common PV materials are applicable. Important result of these two effects upon binding to, PV battery Solar panel inverter will decrease with the decrease of light intensity and rise / or temperature.

Pipe joints leak prevention

Pipe joints leak prevention
In the hydraulic system, both the metal pipe coupling, or industrial ups power supply, are prone to leakage problems. For card sets of pipe joints, mostly due to the pipe by a large external force or impact, so that the card sleeve loose or deformed pipe ends and cause leakage, you should check whether the card holder out of round, whether the defect edge, whether the pipe end in good condition and the extent of compression ferrule nut, while also eliminating external piping. For flared Online ups, mostly due to excessive flaring, substandard quality requirements or repeatedly demolished, resulting in flaring deformation or cracks caused by leaks, then you can be re-flared front end truncated. If the top male and female cones pressure seal, which is mostly due to two cone leak damage, available grinders for grinding cone. In some by "о" or outer-ring seal by the end face of the occasion, the leakage following reasons: "о" ring deformation caused by aging or leakage; "о" ring assembly is not in place, so that the two-plane connection when the pressure is uneven or "о" ring is cut cause leakage; "о" ring uncompacted, insufficient amount of elastic deformation caused by leakage; "о" mouth-ring groove just too deep and cause leaks. In this regard, the need to re-select the same diameter and cross-sectional coarse "о" rings, can also be sealed with a flat opening slot stop cutting or grinding to reduce the groove depth of mouth only, so "о" ring has sufficient amount of elastic deformation (compression in general should be between 0.35-0.65mm). For the use of oil and rubber, wool felt, soft steel cardboard combination gasket sealant joints or pipe leaks, no matter what the material is, you should first check the seals without damage, deformation, aging and rough through the large, etc. and then take the appropriate measures.

 

The maximum power point (MPP)

The maximum power point (MPP)
Solar can work in a wide range of voltages and currents. By the irradiation by the resistive load on the battery from zero (a short circuit event) continues to increase the value of high (open event), may determine MPP.MPP is V x I reaches the maximum operating point, and in this irradiation intensity can achieve maximum online offline ups. Output short circuit power is zero (PV voltage is zero) or open (PV current is zero) when the event.
High-quality single crystal silicon solar cells at a temperature of 25 ° C, can produce 0.60 volts open circuit voltage. In full sunlight and air temperature of 25 ° C, the temperature of a given cell may be close to 45 ° C, which makes the open circuit voltage drops to about 0.55V. As the temperature increases, the open circuit voltage continued to decline until the PV Short circuit module.
Cell temperature of 45 ° C when the maximum Rack mount ups is usually produced under the conditions of 80% and 90% of the open circuit voltage short circuit current. Battery short-circuit current is almost proportional to the intensity of illumination, while the brightness decreases to 80% when the open-circuit voltage can be reduced only by 10%. Lower quality in the case of the battery voltage decreases the current increases faster, so that the available power output from 70% to 50% or even 25%.