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

Product Information

You’ll then need to determine the particular current flow your electrical load requires. You can look at the electrical schematic to determine this number as well. If you can’t locate the required current flow, you can calculate it by dividing the input voltage by the input resistance. Let’s say the required load phase current, which we’ll call l, is 50 amperes. 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. Prompt and reliable but slightly more expensive than alternative suppliers, but chosen because of reputation and service . 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. We also offer a few different types of brand-newmedium voltage transformers, including dry-type, pad-mount,unit substationandstation-type transformers. We’re also happy to develop custom-built transformersto meet your facility’s unique needs and specifications. We have years of experience supplying transformers for various industries, includingelectrical contractors,electrical supply houses, hospitals and medical clinicsandmanufacturing facilities, among many others.

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. NOTE: We do not recommend loading a transformer above 80% of its KVA rating. When the KVA rating has been calculated, divide that number by 0.8 to get the minimum KVA rating needed. All values should be reviewed and confirmed by an electrician or electrical engineer. To see the benefits of quality, high-performing transformers in your business, partner with ELSCO Transformers. We provide a range of transformer services to keep your business operating smoothly, including transformer repairs, rebuilds, retrofits, rewindsand emergency replacements.

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:

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 calculation for a three-phase transformer kVA is a little different from the calculation for a single-phase kVA. Once you’ve multiplied your voltage and amperage, you’ll also need to multiply by a constant — 1.732, which is the square root of 3 truncated to three decimal places: The electrical load that connects to the secondary winding requires a particular input voltage, or load voltage. Let’s call that voltage V. You’ll need to know what this voltage is — you can find it by looking at the electrical schematic.We could say that an example load voltage V must be 150 volts. Let’s say you have a transformer with 300 turns in its primary coil and 150 turns in its secondary coil. You also know that the voltage drop through the first coil is 10 volts. Plugging these numbers into the equation given above yields 300/150 = 10/t 2, so you know t 2, the voltage drop through the secondary coil, is 5 volts. How to Determine Primary Voltage

The last step is to convert the figure in kilowatts to kilovolt-amperes. When you do that, you’ll need to divide by 0.8, which represents the typical power factor of a load. In the example above, you’d divide 7.5 by 0.8 to get 9.375 kVA. In the example above, we divided by 0.8 to increase the kVA of the transformer slightly. Why did we do that? All information obtained while using this calculator should be confirmed by a qualified electrical contractor or engineer.

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. Alternatively, you may have the kVA of your transformer and want to calculate the necessary voltage. In that case, you can adjust the equation we used above. Since you know kVA = V * l / 1,000, we can solve for V to get V = kVA * 1,000 / l.

Categories Products Review product LUMER 5KVA Intermittent Rated 5KVA Transformer (Input 240 Volt/Output 110 Volt) 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. However, if you start your transformer often — say more than once an hour — you may want a kVA even larger than your calculated size. And if you’re working with specialized loads, such as those found with motors or medical equipment, your kVA requirements may differ substantially. For specialized applications, you’ll probably want to consult a professional transformer company for advice on what kVA you need.

Very easy company to deal with, efficient and attentive. Deliver on the date we request. Competitive prices. Great company. The transformer typically consists of two windings, a primary and secondary winding. Input power flows through the primary winding. The secondary winding then converts the power and sends it to the load through its input leads. A transformer’s rating, or size, is its power level in kilovolt-amperes. In many industries, including health care, manufacturing, electrical contracting, higher education and corrections, reliable, high-quality transformers are essential for keeping operations running efficiently. Large facilities and industrial processes require substantial amounts of power, and they need dependable transformers to convert the energy coming from the power plant into a form they can use for their equipment and building utilities. Constant pressing of the override button on this transformer is not advised as it may lead to default of product not covered under warranty