Переделка сварочного инвертора в блок питания: А можно ли использовать сварочный инвертор, как блок питания? – Разговоры

Переделка сварочного инвертора в полуавтомат своими руками

Большинство мастеров, работающих с железом, считают самым незаменимым устройством в своём арсенале сварочный полуавтомат. Он востребован как среди профессионалов, так и новичков. В основном полуавтоматическая сварка применяется в кузовном ремонте автомобилей, но это далеко не единственная область её применения.

Готовый аппарат можно приобрести практически повсеместно, однако владельцы обыкновенных сварочных инверторов зачастую не хотят докупать ещё одно устройство. В таком случае полезно знать, как переделать сварочный инвертор в полуавтомат своими руками. Стоит понимать, что это далеко не самая простая задача, но при желании и некоторых знаниях в области электротехники это вполне возможно.

Необходимые материалы и инструменты

Для сборки полуавтомата потребуется:

• инверторный сварочный аппарат с током не менее 150 А;
• горелка со специальным шлангом. Внутри шланга должны проходить газопровод, силовой и управляющий кабеля, а также направляющий канал для электродной проволоки;
• механизм подающий проволоку;
• контроллер к электромотору;
• баллон с углекислотой;
• электромагнитный клапан;
• катушка с проволокой;
• источник питания 12 В, и удобный корпус для сборки механизма.

Сборка механизма подачи электрода

Суть полуавтоматической сварки заключается регулируемой и беспрерывной подаче электрода непосредственно к горелке с помощью специального механизма. Собрать его самостоятельно вполне можно и самому. Для этого потребуется:

1. Двигатель и механизм стеклоочистителя автомобиля.
2. Корпус системного блока и компьютерный блок питания. Можно использовать любой другой БП, важно чтобы его ток был рассчитан на мощность двигателя.
3. Разъём для подключения специального шланга.
4. Подшипники, болт, полихлорвиниловая трубка, пружинка, фанера.
5. Труба шириной соответствующей внутреннему диаметру катушки.

Итак, сборка механизма начинается с определения места расположения в корпусе катушки. Следует чётко разметить внешний диаметр внутри корпуса. Катушка должна устанавливаться таким образом, чтобы оставшегося пространства хватало для монтажа блока питания, шлангов, мотора и протягивающей части.

Протягивающее устройство лучше приобрести отдельно, но при желании его можно сконструировать самостоятельно. Для этого потребуется доработать механизм стеклоочистителя. В нём следует установить роликовые направляющие. Их роль могут выполнять обычные подшипники с проточенной вдоль канавкой. Перед подшипниками закрепляется направляющая часть. Ею может послужить просверленный вдоль болт соответствующего размера. На болт натягивается подпружиненный для жёсткости кембрик, внутри которого будет проходить электрод. Элементы механизма, на которых установлены ролики, должны быть сжаты между собой пружиной с возможностью регулировки сжатия. Во внешней части корпуса монтируется специальный разъём для шланга.

Все направляющие элементы обязательно должны быть отцентрированы относительно положения разъёма.

В центре размеченной области под катушку устанавливается бабина из пластиковой трубы. Для её основы можно использовать кусок фанеры.

Электрическая составляющая

Для подающего устройства также следует собрать электрическую составляющую. Она состоит из следующих компонентов:

• контроллер для мотора 12 В;
• реле задержки;
• электрический клапан;

Электродвигатель обязательно должен быть подключен через контроллер. Это даст возможность регулировки подачи электрода. Схема подключения идёт в комплекте с контроллером. Однако для выполнения этой и всех последующих работ потребуются базовые знания электротехники.

Для того чтобы электрод к месту сварки подавался с небольшим запаздыванием нужно установить реле задержки двигателя. Сделать его можно на основе транзистора КТ815, а также электролитического конденсатора ёмкостью  200 – 1000 мкФ. Сборку этой схемы должен проводить человек, который хорошо разбирается в электронике.

Электронный клапан располагается в корпусе таким образом, чтобы при работе механизма его никак не задевали движущиеся элементы. В схему он подключается так чтобы при нажатии кнопки на горелке, клапан сразу же открывался.

На последнем этапе требуется небольшая доработка самого инвертора. Поскольку его вольтамперные характеристики не соответствуют полуавтоматической сварке. Самый простой способ, это добавление к плюсовому контакту дросселя от лампы дневного света, так чтобы ток шёл через него.

Переделать сварочный инвертор в полуавтоматический вполне возможно, но как видно из всего вышеописанного, это довольно трудоёмкая работа требующая знаний в электротехнике.

Power Electronics • Просмотр темы

neznaika писал(а):

Магазин собрался продавать автомобильные инверторы 12DC-220AC мощностью до 1200 вт и попросил сделать мощный 12-вольтовый источник..

так понимаю, что источник 12В нужен для демонстрации покупателю 12DC/220AC преобразователя при продаже.

Цитата:

Я взял сварочный инвертор PSWI-200A и перемотал вторичную обмотку..Проверил на нагрузке, при токе 85 а. напряжение 12 вольт.. Но вот форма выходного напряжения меня напрягла..под нагрузкой идут прямоугольные импульсы со скважностью примерно 20 процентов…

значит не правильно пересчитал витки. Подумай сам, что для сварника мощностью 6-7кВт нагрузка в 1,2кВт? Мелочь. А посему, из-за не правильного выбора витков вторички сварника “варежка” сварника прикрывается для тока 85А.
Для того, что бы обойтись минимальной ёмкостью фильтра-накопителя 12В надо раскрыть “варежку” до максимального, т.е. Кзап. должен ограничиваться только “мёртвым” временем между тактами клацарей. В этом случае буде достаточен набор литов в фильтре 12В в 1500-2000мкФ, что не является очень уж большой проблемой для кондеев на низкое напряжение.
И ышщо. Ежли на выходе сварника имеется дроссель, то ситуации намного улучшается, т.б. для частоты около 100кГц. Литы обязательно зашунтировать “плёнкой” примерно в 10-20мкФ
При выборе литов руководствоваться допустимым током и общим сопротивлением (активное, индуктивное…). Для “плёнки” тож самое. При отсутствии качественных кондеев, пмсм, лучше взять “мелкоту” и запараллелить, т.с. улучшив жизнь кондеев и уменьшив внутреннее сопротивление ёмкостного фильтра-накопителя.
Соглашусь с

Ришат писал(а):

3.Самый простой, дешевый,надежный выход из ситуации-это поставить аккумулятор достаточной емкости с постоянно подключенным автоматическим зарядным устройством(не дешевый).

токо насчёт стоимости ЗУ и ёмкости АБ не соглашусь, т.к. не думаю, что все кинуться покупать преобразователь и опробование покупаемых девайсов буде идти весь день напролёт.
В качестве ЗУ можно использовать обыкновенный электронный транс мощностью 100-200Вт для галогенок (а то и меньше), примастырив выпрямитель на выход.

ЗЫ. neznaika, вот скажи мне пжл., с какогу ляду-перепугу ты втулил свою тему в Теоретические вопросы, когда ей место в Сломай сам?

_________________
Есть только миг между прошлым и будущим, именно он называется ЖИЗНЬ ©

90000 How do inverters convert DC electricity to AC? 90001 90002 90003 90004 90005 90006 90007 90008 90002 by Chris Woodford. Last updated: June 11, 2019. 90003 90011 One of the most significant battles of the 19th century was fought not over land or resources but to establish the type of electricity that powers our buildings. 90003 90002 At the very end of the 1800s, American electrical pioneer Thomas Edison (1847-1931) went out of his way to demonstrate that direct current (DC) was a better way to supply electrical power than alternating current (AC), a system backed by his arch-rival Nikola Tesla (1856-1943).Edison tried all kinds of devious ways to convince people that AC was too dangerous, from electrocuting an elephant to (rather cunningly) supporting the use of AC in the electric chair for administering the death penalty. Even so, Tesla’s system won the day and the world has pretty much run on AC power ever since. 90003 90002 The only trouble is, though many of our appliances are designed to work with AC, small-scale power generators often produce DC. That means if you want to run something like an AC-powered gadget from a DC car battery in a mobile home, you need a device that will convert DC to AC-an inverter, as it’s called.Let’s take a closer look at these gadgets and find out how they work! 90003 90002 Photo: A selection of electricity inverters that can be used with renewable energy generating equipment, such as solar cells and micro-wind turbines. Photo by Warren Gretz courtesy of US Department of Energy / NREL (DoE / NREL). 90003 90019 What’s the difference between DC and AC electricity? 90020 90002 When science teachers explain the basic idea of ​​electricity to us as a flow of electrons, they’re usually talking about direct current (DC).We learn that the electrons work a bit like a line of ants, marching along with packets of electrical energy in the same way that ants carry leaves. That’s a good enough analogy for something like a basic flashlight, where we have a circuit (an unbroken electrical loop) linking a battery, a lamp, and a switch and electrical energy is systematically transported from the battery to the lamp until all the battery’s energy is depleted. 90003 90002 90003 90002 Diagram: When we think of electricity as a flow of electrons, we’re usually picturing DC (direct current) in our minds.90003 90002 In bigger household appliances, electricity works a different way. The power supply that comes from the outlet in your wall is based on alternating current (AC), where the electricity switches direction around 50-60 times each second (in other words, at a frequency of 50-60 Hz). It can be hard to understand how AC delivers energy when it’s constantly changing its mind about where it’s going! If the electrons coming out of your wall outlet get, let’s say, a few millimeters down the cable then have to reverse direction and go back again, how do they ever get to the lamp on your table to make it light up? 90003 90002 The answer is actually quite simple.Imagine the cables running between the lamp and the wall packed full of electrons. When you flick on the switch, all the electrons filling the cable vibrate back and forth in the lamp’s filament-and that rapid shuffling about converts electrical energy into heat and makes the lamp bulb glow. The electrons do not necessarily have to run in circle to transport energy: in AC, they simply “run on the spot.” 90003 90019 What is an inverter? 90020 90002 90003 90002 Photo: A typical electricity inverter.This one is made by Xantrex / Trace Engineering. Photo by Warren Gretz courtesy of US Department of Energy / NREL (DoE / NREL). 90003 90002 One of Tesla’s legacies (and that of his business partner George Westinghouse, boss of the Westinghouse Electrical Company) is that most of the appliances we have in our homes are specifically designed to run from AC power. Appliances that need DC but have to take power from AC outlets need an extra piece of equipment called a rectifier, typically built from electronic components called diodes, to convert from AC to DC.90003 90002 An inverter does the opposite job and it’s quite easy to understand the essence of how it works. Suppose you have a battery in a flashlight and the switch is closed so DC flows around the circuit, always in the same direction, like a race car around a track. Now what if you take the battery out and turn it around. Assuming it fits the other way, it’ll almost certainly still power the flashlight and you will not notice any difference in the light you get-but the electric current will actually be flowing the opposite way.Suppose you had lightning-fast hands and were deft enough to keep reversing the battery 50-60 times a second. You’d then be a kind of mechanical inverter, turning the battery’s DC power into AC at a frequency of 50-60 hertz. 90003 90002 Of course the kind of inverters you buy in electrical stores do not work quite this way, though some are indeed mechanical: they use electromagnetic switches that flick on and off at high speed to reverse the current direction. Inverters like this often produce what’s known as a square-wave output: the current is either flowing one way or the opposite way or it’s instantly swapping over between the two states: 90003 90002 90003 90002 These kind of sudden power reversals are quite brutal for some forms of electrical equipment.In normal AC power, the current gradually swaps from one direction to the other in a sine-wave pattern, like this: 90003 90002 90003 90002 Electronic inverters can be used to produce this kind of smoothly varying AC output from a DC input. They use electronic components called inductors and capacitors to make the output current rise and fall more gradually than the abrupt, on / off-switching square wave output you get with a basic inverter. 90003 90002 Inverters can also be used with transformers to change a certain DC input voltage into a completely different AC output voltage (Either higher or lower) but the output power must always be less than the input power: it follows from the conservation of energy that an inverter and transformer can not give out more power than they take in and some energy is bound to be lost as heat as electricity flows through the various electrical and electronic components.In practice, the efficiency of an inverter is often over 90 percent, though basic physics tells us some energy-however little-is always being wasted somewhere! 90003 90019 How does an inverter work? 90020 90002 We’ve just had a very basic overview of inverters-and now let’s go over it again in a little bit more detail. 90003 90002 Imagine you’re a DC battery and someone taps you on the shoulder and asks you to produce AC instead. How would you do it? If all the current you produce flows out in one direction, what about adding a simple switch to your output lead? Switching your current on and off, very rapidly, would give pulses of direct current-which would do at least half the job.To make proper AC, you’d need a switch that allowed you to reverse the current completely and do it about 50 & dash; 60 times every second. Visualize yourself as a human battery swapping your contacts back and forth over 3000 times a minute. That’s some neat fingerwork you’d need! 90003 90002 In essence, an old-fashioned mechanical inverter boils down to a switching unit connected to an electricity transformer. If you’ve studied our article on transformers, you’ll know that they’re electromagnetic devices that change low-voltage AC to high-voltage AC, or vice-versa, using two coils of wire (called the primary and secondary) wound around a common iron core.In a mechanical inverter, either an electric motor or some other kind of automated switching mechanism flips the incoming direct current back and forth in the primary, simply by reversing the contacts, and that produces alternating current in the secondary-so it’s not so very different from the imaginary inverter I sketched out above. The switching device works a bit like the one in an electric doorbell. When the power is connected, it magnetizes the switch, pulling it open and switching it off very briefly.A spring pulls the switch back into position, turning it on again and repeating the process-over and over again. 90003 90002 90003 90002 Animation: The basic concept of an electromechanical inverter. DC feeds into the primary winding (pink zig-zag wires on the left side) of a toroidal transformer (brown donut), through a spinning plate (red and blue) with criss-cross connections. As the plate rotates, it repeatedly switches over the connections to the primary winding, so the transformer is receiving AC as its input instead of DC.This is a step-up transformer with more windings in the secondary (yellow zig-zag, right-hand side) than the primary, so it boosts a small AC input voltage into a larger AC output. The speed at which the disk rotates governs the frequency of the AC output. Most inverters do not work anything like this; this simply illustrates the concept. An inverter set up this way would produce a very rough square wave output. 90003 90019 Types of inverters 90020 90002 If you simply switch a DC current on and off, or flip it back and forth so its direction keeps reversing, what you end up with is very abrupt changes of current: all in one direction, all in the other direction, and back again.Draw a chart of the current (or voltage) against time and you’ll get a square wave. Although electricity varying in that fashion is, 90068 technically 90069, an alternating current, it’s not at all like the alternating current supplied to our homes, which varies in a much more smoothly undulating sine wave). Generally speaking, hefty appliances in our homes that use raw power (things like electric heaters, incandescent lamps, kettles, or fridges) do not much care what shape wave they receive: all they want is energy and lots of it-so square waves really do not bother them.Electronic devices, on the other hand, are much more fussy and prefer the smoother input they get from a sine wave. 90003 90002 This explains why inverters come in two distinct flavors: 90072 true / pure sine wave inverters 90073 (often shortened to PSW) and 90072 modified / quasi sine wave inverters 90073 (shortened to MSW). As their name suggests, true inverters use what are called toroidal (Donut-shaped) transformers and electronic circuits to transform direct current into a smoothly varying alternating current very similar to the kind of genuine sine wave normally supplied to our homes.They can be used to power any kind of AC appliance from a DC source, including TVs, computers, video games, radios, and stereos. Modified sine wave inverters, on the other hand, use relatively inexpensive electronics (thyristors, diodes, and other simple components) to produce a kind of “rounded-off” square wave (a much rougher approximation to a sine wave) and while they’re fine for delivering power to hefty electric appliances, they can and do cause problems with delicate electronics (or anything with an electronic or microprocessor controller), so, generally, that means they’re unsuitable for things like laptops, medical equipment, digital clocks, and smart home devices.Also, if you think about it, their rounded-off square waves are delivering more power to the appliance overall than a pure sine wave (There’s more area under a square than a curve). This makes them less efficient and the wasted power, dissipated as heat, means there’s some risk of overheating with MSW inverters. On the positive side, they tend to be quite a bit cheaper than true inverters. 90003 90002 90003 90002 Artwork: A modified sine wave (MSW, green) more closely resembles a sine wave (blue) than a square wave (orange), but it still involves sudden, drastic changes in current.The more steps in a modified sine wave, the nearer it approaches the idealized form of a true sine wave. 90003 90002 Although many inverters work as 90072 standalone units 90073, with battery storage, that are totally independent from the grid, others (known as 90072 utility-interactive inverters 90073 or 90072 grid-tied inverters 90073) are specifically designed to be connected to the grid all the time; typically they’re used to send electricity from something like a solar panel back to the grid at exactly the right voltage and frequency.That’s fine if your main objective is to generate your own power. It’s not so helpful if you want to be independent of the grid sometimes or you want a backup power source in case of an outage, because if your connection to the grid goes down, and you’re not making any electricity of your own (For example, it’s night-time and your solar panels are inactive), the inverter goes down too, and you’re completely without power-as helpless as you would be whether you were generating your own power or not.For this reason, some people use 90072 bimodal 90073 or 90072 birectional inverters 90073, which can either work in standalone or grid-tied mode (though not both at the same time). Since they have extra bits and pieces, they tend to be more bulky and more expensive. 90003 90002 90003 90002 Caption: Nikola Tesla. Although he won the war of the currents, his rival Thomas Edison is still remembered as the pioneer of electric power. Wood engraving of Tesla by Sarong, c.1906, courtesy of US Library of Congress.90003 90019 What are inverters like? 90020 90002 Inverters can be very big and hefty-especially if they have built-in battery packs so they can work in a standalone way. They also generate lots of heat, which is why they have large heat sinks (metal fins) and often cooling fans as well. As you can see from our top photo, typical ones are about as big as a car battery or car battery charger; larger units look like a bit like a bank of car batteries in a vertical stack. The smallest inverters are more portable boxes the size of a car radio that you can plug into your cigarette lighter socket to produce AC for charging laptop computers or cellphones.90003 90002 Just as appliances vary in the power they consume, so inverters vary in the power they produce. Typically, to be on the safe side, you’ll need an inverter rated about a quarter higher than the maximum power of the appliance you want to drive. That allows for the fact that some appliances (such as fridges and freezers or fluorescent lamps) consume peak power when they’re first switched on. While inverters can deliver peak power for short periods of time, it’s important to note that they’re not really designed to operate at peak power for long periods.90003 .90000 Inverter Spot Welding Power Supply 90001 90002 90003 Guangzhou Minder-Hightech Co., Ltd (main web page: minder-hightech.en.alibaba.com/www.minder-hightech.com) is focused on connection (welding). 90004 90005 90002 90003 We are comprised by a group of high educated specialists, with the leader of overseas professor, some of us have more than 20 years welding experience, our goal is to provide high performance product but low price and exceeded service. 90004 90005 90002 90003 We care for the safety of operator, this year, we developed a safety system in spot welding industry named SOFT TOUCH system, which can prevent heavy pinch point injury.90004 90005 90002 90003 We are specialized in most of the connection (welding) technics, the most application we have participated in are electronic component (resistance, capacitor, inductor), chip on board, automotive electronic accessories, cell phone, IC cards, motor armature commutator etc.By material, we have engaged in connecting the Aluminum, Copper, Brass, Au (gold), Platinum, Nickel, Enameled wire, etc. 90004 90005 90002 90003 We also provided the full IC package line; and LED producing line; Crystal oscillator producing line; as well as the wafer machining equipment.90004 90005 90002 90003 Our product are classified into resistance spot welding, inverter seam welding, ultrasonic wire bonding, hot bar soldering, automatic TIN soldering, stud welding, all the product are with mature latest technology, high performance, high precision, and high reliability . 90004 90005 90002 90003 At the same time, we maintain a good relationship with the high school scientific research institution, we know the newest connection (welding) technology direction all over the world, committed to give out the best connection (welding) solution to our global customer.90004 90005 90002 90003 We chose the most open and industrialized city-guangzhou-to be our base head place, to ensure the efficiency and rapidly response. 90004 90005 90002 90003 These years, we proud of our growth with the famous company such as TPT, K & S, ASM, Bosch, Miyachi, Uniteck, Avio, Apollo, LPKF etc. 90004 90005 90002 90005 90002 90003 90004 90005.90000 Inverter Power Source 90001 The advantages of inverter welding units over traditional transformer-rectifiers are many. Inverters are more portable and lighter weight, making them easier to maneuver around the job site. In addition, inverters offer high-quality, multi-process welding capabilities so that one machine can handle Stick, MIG, TIG, FCAW, arc gouging and even pulsing. And even more importantly, inverters take advantage of Lincoln’s Waveform Control Technology ™ to offer greater control of arc variables and automatically fine tune the arc to create the best possible weld, controlling problems such as burnthrough.90002 But did you know that using an inverter can also save you money in energy costs over a traditional-type power source? Each year about $ 15 million worth of electricity is consumed in the U.S. and $ 99 million worldwide for welding. To increase efficiencies and cut down on the money your company is spending on electricity related to welding, an inverter is an attractive option. In fact, because of their efficiency, these machines can provide substantial savings in utility costs. 90003 90002 90005 90003 90002 90008 But how can a switch to an inverter save in energy consumption? In the design of inverter welders, such as Lincoln’s Invertec® V350 Pro, the transformer cores, transformer windings and power electronic switching components are all carefully chosen to minimize operating losses.Here are some other reasons that inverters save in energy costs: 90003 90010 90011 90002 Greater transformer efficiencies are realized through the use of ferrite cores in the inverter’s power transformer. This reduces the current losses resulting in lower idle currents in the supply conductors 90008 90003 90015 90011 90002 The inverter transformer coils are physically smaller than common transformers. A smaller coil translates to less wire wrapping around the core – less wire 90008 means fewer losses and greater efficiency 90008 90003 90015 90011 90002 The inverter’s power electronic components have been carefully designed to reduce losses and extend operating life 90008 90003 90015 90011 90002 Many inverters, such as Lincoln’s Invertec V350 Pro, uses a copper conductor.Copper has higher thermal and electrical conductivity compared to aluminum, 90008 which will minimize losses and maximize efficiency 90008 90003 90015 90011 90002 Operating at higher frequencies than conventional welders, inverters require less output inductance for smooth operation. The energy needed for stick welding or for globular transfer welding processes is stored in capacitors allowing for smaller output chokes 90008 90003 90015 90011 90002 The compact design and relatively small physical size of an inverter welder means shorter leads and cables (or even direct connections) between power 90008 components.Shorter current paths translate to lower resistances and better efficiencies 90008 90003 90015 90011 90002 Because the inverter is designed to inherently have low losses, smaller cooling fans are required. This means less power is needed for moving cooling air and, again, greater efficiency 90008 90003 90015 90011 90002 The smaller size of the components inside the inverter machine translate into less heat to dissipate and again, greater efficiency 90003 90015 90053 90002 90055 90003 90002 90008 How can you calculate how an inverter can save you money over a traditional transformer- rectifier and which inverter is the best in creating energy efficiencies? Use the worksheet below to make that assessment.90003 90002 90061 Step # 1 – Calculate Output Power 90008 90063 First look at your machine to determine the output voltage (Vout) which is given as volts on your machine. In our example this is 32v. Then multiply that by the output current (Iout), found on your machine in amps. In this case the amps are given as 300. 90003 90002 90066 Vout x Iout = Output Power (Wout) in watts 90008 32v x 300 amps = 9,600 watts OR 9.6 KW (1,000 watts = 1 KW) 90068 90003 90002 90061 Step # 2 – Calculate Input Power 90008 90063 Now take the output power from above (KWout) and divide by the efficiency (Eff).The efficiency is given by the machine’s manufacturer. Calculating this will give you input power in kilowatts. 90003 90002 90066 KWout ÷ Eff = Input power in kilowatts (KWin) 90008 9.6 KW ÷ 88.2% (or 0.882) = 10.88 KW 90068 90003 90002 90061 Step # 3 – Calculate Operating Costs During Welding 90008 90063 A) Next, you will calculate the kilowatt hours used in one day (KWh2 / day) by taking the input power calculated in Step # 2 (KWin) multiplied by the hours per day that the machine runs (for our example, we will assume welding is performed four hours per day.) 90003 90002 90066 KWin x # Hrs / Day = Kilowatt hours used in one day (KWh2 / day) 90008 10.88 KW x 4 Hrs. = 43.52 KWHrs / day 90068 90003 90002 B) Now take your input power calculated (KWin) multiplied by the number of hours per day the machine runs multiplied by the price per KW hour of the power. Note: the price of the power is calculated at $ 0.12578 which is the industry average. 90003 90002 90066 KWin x # Hrs / Day x Price per KWHrs ($ / KWh) = Daily Operating Costs Welding 90008 10.88 x 4 x $ 0.12578 = $ 5.47 90068 90003 90002 90098 90003 90002 90061 90008 Step # 4 – Calculate the Operating Costs During Idle 90008 90063 A) You will now calculate the idle consumption per day (KWh3). To do this, take the input power (KWIdle) multiplied by the idle hours per day. (We are assuming that in an eight-hour day, if welding is performed four hours, idle hours will be four as well.) 90003 90002 90066 KWIdle x Idle Hrs. = Idle Consumption Per Day (KWh3) 90008 0.4 KW x 4 Hrs. = 1.6 KW hrs 90068 90003 90002 B) Now take the input power idle (KWIdle) which is given on the power transformer in watts – in this case 400 watts (or 0.4 KW) – multiplied by the idle hours x the price per kilowatt hour of power. 90003 90002 90066 KWidle x IdleHrs x Price per KW Hrs = Daily Operating Costs Idle 90008 0.4 KW x 4 Hrs. x $ 0.12578 = $ 0.20 90068 90003 90002 90061 Step # 5 – Calculate the Total Operating Costs 90008 90063 Now take the daily operating costs welding calculated in Step # 3 and add the daily operating costs idle from Step # 4 above equals the daily operating costs in dollars. 90003 90002 90066 Daily Operating Costs + Daily Operating Costs Idle = Daily Operating Costs (Total $ / day) 90008 $ 5.47 + $ 0.20 = $ 5.67 90068 90003 90002 90008 By comparing this number against a traditional transformer-rectifier or another competitive inverter, you can easily tell which machine will provide the cost savings. 90003 90002 90132 90003 90002 An inverter with a list price of $ 3,200 and efficiency of 87 percent compared to a traditional transformer rectifier that has a list price of $ 2800. and a 67 percent efficiency rate would save approximately $ 300 in utility cost on an annual basis. The payback for the difference in price would then be in one to one-and-a-half years.90003 .90000 Inverter Spot Welding Power Supply Mddl Series 90001 90002 90003 Guangzhou Minder-Hightech Co., Ltd (main web page: minder-hightech.en.alibaba.com/www.minder-hightech.com) is focused on connection (welding). 90004 90005 90002 90003 We are comprised by a group of high educated specialists, with the leader of overseas professor, some of us have more than 20 years welding experience, our goal is to provide high performance product but low price and exceeded service. 90004 90005 90002 90003 We care for the safety of operator, this year, we developed a safety system in spot welding industry named SOFT TOUCH system, which can prevent heavy pinch point injury.90004 90005 90002 90003 We are specialized in most of the connection (welding) technics, the most application we have participated in are electronic component (resistance, capacitor, inductor), chip on board, automotive electronic accessories, cell phone, IC cards, motor armature commutator etc.By material, we have engaged in connecting the Aluminum, Copper, Brass, Au (gold), Platinum, Nickel, Enameled wire, etc. 90004 90005 90002 90003 We also provided the full IC package line; and LED producing line; Crystal oscillator producing line; as well as the wafer machining equipment.90004 90005 90002 90003 Our product are classified into resistance spot welding, inverter seam welding, ultrasonic wire bonding, hot bar soldering, automatic TIN soldering, stud welding, all the product are with mature latest technology, high performance, high precision, and high reliability . 90004 90005 90002 90003 At the same time, we maintain a good relationship with the high school scientific research institution, we know the newest connection (welding) technology direction all over the world, committed to give out the best connection (welding) solution to our global customer.90004 90005 90002 90003 We chose the most open and industrialized city-guangzhou-to be our base head place, to ensure the efficiency and rapidly response. 90004 90005 90002 90003 These years, we proud of our growth with the famous company such as TPT, K & S, ASM, Bosch, Miyachi, Uniteck, Avio, Apollo, LPKF etc. 90004 90005 90002 90005 90002 90003 90004 90005.