About the MarcusTransformerMarcus manufactures a wide range of transformers, including dry type distribution, industrial control, auto transformers and line reactors. Today, with more than 60 years of experience in the transformer industry, Marcus not only excelled in quality of product and customer service, but also proved to be a leader in innovative technology, customer care and reliability.For ascertaining the right size of transformer, one can make use of this app which helps you calculate the right size basis your needs. Marcus will custom make it for you in case its not a readily available size.Transformers are available in a wide array of voltages. The capacity (volt-amps) dictates how much power a particular device can handle before overloading.This application plays a pivotal role in selecting the correct transformer. However, instances where the typical load may spike must be taken into consideration when selecting a particular transformer.Determine the Marcus transformer model numberStep 1: Determine the KVA, Amperes or wattage required by the load.Determine the KVA, Amperes or wattage required by the load. Transformer size is determined by the KVA of the load. Be sure to add the total number of pieces of equipment involved. The following formulas may be used to calculate the KVA, (VA) or the Amperes required, for either single or three phase installations:Single phaseKVA = (Volts x Amps)/1000AMPS = (KVA(VA) x 1000)/VoltsThree phaseKVA = (1.73 x Volts x Amps)/1000AMPS = (KVA(VA) x 1000)/1.73 x VoltsKVA stands for kilovolt ampere or thousand volt ampere. Smaller units 500 VA = 0.5 KVA. Single-phase has two lines of AC power. Three-phase has three lines of AC power, with each line 120 degrees out of phase with the other two.Important: The KVA of the transformer should be equal to or greater than the KVA of the load to handle current requirements and to account for future expansion. Step 2: Find out the supply voltageFind out what the supply voltage (or available voltage) is to connect to the primary of the transformer. Line voltage, or primary voltage, is the available power from your utility or local power source.Step 3: Determine the voltage required by the loadDetermine the voltage required by the load. This is the secondary voltage or output voltage of the transformer. Load voltage, or secondary voltage, is the voltage required to operate the load (lights, motor and other devices).Step 4: What is the frequency of the supply source?What is the frequency of the supply source and of the equipment (normally 60 or 50 hertz)? The frequency of the supply source and the load must be the same.The following calculator may be used to select the transformer size required.When do you need a custom transformer?If your application requires a special design not available in stock, Marcus will design, manufacture and deliver your custom-made transformer within 7 days of your request.If your application requires a special design not available in stock, we will be happy to accurately and professionally meet your requirements. Marcus will design, manufacture and deliver your custom-made transformer within 7days of your request. For Special Orders: We make dry-type transformers up to and including 600 kVA, auto transformers up to 1000 kVA, and control transformers through 7500 VA. Call with your special requirements.For Special Orders: We make dry-type transformers up to and including 600 kVA, auto transformers up to 1000 kVA, and control transformers through 7500 VA. Call with your special requirements.