Transformers convert energy from the source to the power required by the load. To use their transformers effectively, businesses need to know how much power their particular transformers can give them.A transformer’s rating provides that information. Good product, excellent competitive price and delivery exactly as promised. What better service could you ask for?

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 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. Additional Standards/Certificates:Low Voltage Direct. (72/73/EEC), EMC Direct. (89/336/EEC), Machinery Direct. (89/392/EEC). Generally to BSEN 61558Let 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. There are a few different formulas which can be used to determine the size of a transformer. A useful formula is presented below. Constant pressing of the override button on this transformer is not advised as it may lead to default of product not covered under warranty

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. So if you’re working with a three-phase transformer, instead of multiplying the voltage by the amperage and dividing by 1,000 to get the kVA, you’ll multiply the voltage by the amperage by 1.732 and still divide by 1,000 to get the kVA.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. 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. 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. 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.