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

Product Information

We are approved suppliers of transformers to organisations such as BAA, BNFL, London Underground and Network Rail.

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. 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. You can determine that primary voltageby using the ratios of current and voltage from the transformer’s primary and secondary coils. Maybe you know your transformer has a current of 4 amps and a voltage drop of 10 volts through its secondary coil. You also know your transformer has a current of 6 amps through the primary coil. What should the voltage drop through the primary coil be?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. 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 A malfunctioning or broken-down transformer can lead to costly delays and make your business less profitable. Keep your operations running efficiently by staying on top of transformer repairs or getting a custom new system from ELSCO Transformers. Our essential staff members have over two decades of experience in the industry, and we parlay that extensive experience, knowledge and expertise into giving you reliable units that will run dependably and perform well for years.

I bought a 5kva transformer and needed it within 3 days as my other one had stopped working and I had an important task to complete. 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. Our transformers are generally double wound, enclosed in a steel or insulated enclosure, usually offering high levels of ingress protection.So you’ll multiply your kVA rating by 1,000 and then divide by the amperage. If your transformer has a kVA rating of 75 and your amperage is 312.5, you’ll plug those numbers into the equation — 75 * 1,000 / 312.5 = 240 volts. How to Determine Secondary Voltage

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. 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: 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.

Specification

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. 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.