Defender 3kVA Portable Transformer 110V 3000W (E203010)

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Once you’ve located or calculated these two figures, you can use them to figure out the load’s power requirements in kilowatts. To do that, you’ll need to multiply the required input voltage (V) by the required current load in amperes (l) and then divide that number by 1,000:

Categories Products Review product LUMER 5KVA Intermittent Rated 5KVA Transformer (Input 240 Volt/Output 110 Volt)

When you’re figuring out kVA size, it’s helpful to have the terminology and abbreviations straight before you begin. You’ll sometimes see transformers, especially smaller ones, sized in units of VA. VA stands for volt-amperes. A transformer with a 100 VA rating, for instance, can handle 100 volts at one ampere(amp) of current.

We manufacture custom built transformers for a variety of applications. Our technical team can design and build transformers for unique applications. Our transformer technicians drive us to the forefront of transformer design and manufacturing in the UK. We are an independent British company offering world class transformer solutions. Our transformers are generally double wound, enclosed in a steel or insulated enclosure, usually offering high levels of ingress protection. The primary and secondary circuits coil around the magnetic part of the transformer. A couple of different factors determine the secondary voltage — the number of turns in the coils and the voltage and current of the primary circuit. Constant pressing of the override button on this transformer is not advised as it may lead to default of product not covered under warranty You can calculate the voltageof the secondary circuit by using a ratio of the voltage drops through the primary and secondary circuits, along with the number of circuit coils around the magnetic part of the transformer. We’ll use the equation t 1/t 2= V 1/V 2, where t 1is the number of turns in the primary circuit’s coil, t 2is the number of turns in the secondary circuit’s coil, V 1is the voltage drop in the primary circuit’s coil and V 2is the voltage drop in the secondary circuit’s coil.kVA stands for Kilovolt-Ampere and is the rating normally used to rate a transformer. The size of a transformer is determined by the kVA of the load. In many circumstances the power required by the load is equivalent to the rating of the transformer expressed in either VA or kVA. For example a 1KW (1000 Watts) load would require a 1kVA transformer @ unity power factor. NOTE: If you need assistance with circuit protection devices such as fuses or breakers, or wire sizing, please consult a licensed electrical contractor or electrician in your area who will be familiar with state and local codes. If the idea of performing calculations when you need to figure out kVA seems daunting or unappealing, you can always turn to charts. Many manufacturers supply charts to make determining the correct kVA easier. If you use a chart, you’ll locate your system’s voltage and amperage in the rows and columns and then find the kVA listed where your chosen row and column intersect.

A single-phase transformer uses a single-phase alternating current. It has two lines of alternating current (AC) power.Below are a few common types:Let i 1and i 2equal the currents through the two coils. You can use the formula i 1/i 2= V 2/V 1. In this case, i 1is 6, i 2is 4, and V 2is 10, and if you plug those numbers into the formula, you get 6/4 = 10/V 1. Solving for V 1gives you V 1= 10 * 4/6, so the voltage drop through the primary circuit should be 6.667 volts. R Baker (Electrical) Ltd have an in-house engineering team readily available to work with you. From design through to installation our team are here to help. We aim to produce the most efficient and cost effective solution for your specific transformer requirements. The equation for three-phase transformers, which we’ll discuss in more detail below, is also slightly different. When you’re doing calculations with three-phase transformers, you’ll need to include a constant to make sure your work comes out correctly. Standard Transformer Sizes The kVA unit represents kilovolt-amperes, or 1,000 volt-amperes. A transformer with a 1.0 kVA rating is the same as a transformer with a 1,000 VA rating and can handle 100 volts at 10 amps of current.

There are many useful tools online to aid you with transformer rating and design, here is a useful link; Transformer Basics How can we help? Remember that every transformer has a primary and secondary side. In many cases, you’ll want to calculate the primary voltage, which is the voltage the transformer receives from a power source. When a piece of electrical equipment malfunctions, the transformer is often the culprit. In that case, you’ll probably need to replace your transformer, and when you do, you’ll need to select one with the correct kVA for your needs. If not, you run the risk of frying your valuable equipment. Before you can calculate the necessary kVA for your transformer, you’ll need to figure out your load voltage, which is the voltage required to operate the electrical load. To determine your load voltage, you can look at your electrical schematic. Starting a device generally requires more current than running it. To account for this additional current requirement, it’s often helpful to put a start factor into your calculations. A good rule of thumb is to multiply the voltage by the amperage and then multiply by an additional start factor of 125%. Dividing by 0.8, of course, is the same thing as multiplying by 1.25.In the example above, we divided by 0.8 to increase the kVA of the transformer slightly. Why did we do that? Very easy company to deal with, efficient and attentive. Deliver on the date we request. Competitive prices. Great company.