The calculation for a three-phase transformer kVA is a little different from the calculation for a single-phase kVA. We are approved suppliers of transformers to organisations such as BAA, BNFL, London Underground and Network Rail. Once you’ve located or calculated these two figures, you can use them to figure out the load’s power requirements in kilowatts. If you can’t locate the required current flow, you can calculate it by dividing the input voltage by the input resistance.

All information obtained while using this calculator should be confirmed by a qualified electrical contractor or engineer. If the idea of performing calculations when you need to figure out kVA seems daunting or unappealing, you can always turn to charts.

A malfunctioning or broken-down transformer can lead to costly delays and make your business less profitable.

To determine your kVA size, you’ll need to make a series of calculations based on your electrical schematics. In many industries, including health care, manufacturing, electrical contracting, higher education and corrections, reliable, high-quality transformers are essential for keeping operations running efficiently. Ventilated:A three-phase ventilated transformer is useful for many types of general indoor and outdoor loads, both industrial and commercial, including lighting applications. Blakley Electrics designs and manufactures wide range of power transformers in ratings ranging from 100VA to 250kVA and in voltages from 12 volts to 3300 volts.Please make use of any product reviews or youtube clips we have available to learn more about the item. Keep your operations running efficiently by staying on top of transformer repairs or getting a custom new system from ELSCO Transformers. This is particularly useful if multiple tools or pieces of equipment are being operated at the same time. Let’s say you have a transformer with 300 turns in its primary coil and 150 turns in its secondary coil. 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.

And if you’re working with specialized loads, such as those found with motors or medical equipment, your kVA requirements may differ substantially. You can also work backward and use the known kVA of a transformer to calculate the amperage you can use.

Maybe you know your transformer has a current of 4 amps and a voltage drop of 10 volts through its secondary coil. Necessary cookies are required to enable the basic features of this site, such as providing secure log-in or adjusting your consent preferences. In the example above, you would multiply 150 by 50 to get 7,500 and then divide that number by 1,000 to get 7. Solving for V 1gives you V 1= 10 * 4/6, so the voltage drop through the primary circuit should be 6.

Goods remain the property of Sitebox Ltd until paid for in full as per our full terms and conditions. To use their transformers effectively, businesses need to know how much power their particular transformers can give them. Totally enclosed non-ventilated:As with single-phase units, these three-phase systems are ideal for environments that contain high volumes of dirt and debris. However, if you start your transformer often — say more than once an hour — you may want a kVA even larger than your calculated size. A 3kVA 110v Portable Transformer featuring 2 x 16A outlets designed for use with corded products such as drills, grinders, saws, lighting products, heating and ventilation products.

You can determine that primary voltageby using the ratios of current and voltage from the transformer’s primary and secondary coils.