TRANSFORMER TEST

If your wondering how in the actual practice did they come up with the transformer's Core and Copper loss, the simple answer to that is through transformer test. The two known test that are used to find this intrinsic property of a transformer is the Open-Circuit test and the Short-Circuit Test.

In an Open-Circuit Test (OCT) or (No Load Test). the purpose of this test is to determine the CORE loss.

While in a Short-Circuit Test (SCT), the purpose of this test is to determine the equivalent impedance, equivalent reactance, equivalent resistance in which the measuring instruments are connected and to determine the full-load or rated Copper loss.

For a detailed discussion regarding the topic of transformer test, click the link below.

TRANSFORMER TESTS AND MEASUREMENTS

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PARTS OF A POWER TRANSFORMER

What are the name of the basic parts of a Power Transformer? We can not deny the fact that only a handful of electrical engineering students are presently familiar with power transformers especially on what it looks like. Unlike a transformer we found in our homes, a power transformer’s appearance and construction is somewhat more complicated. It is not just a simple winding with a primary and secondary terminal although basically any transformer has one. The function that a power transformer plays in an electrical system is very important that an electric utility can not afford to loss it during its operation. Our discussion here will focus more on the basic parts and functions of a power transformer that are usually tangible whenever you go to a substation . Although not all power transformers are identical, nonetheless they all have the following listed parts in which the way of construction may differ.

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ELECTRIC MOTOR FRAME SIZE STANDARD SPECIFICATIONS

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ELECTRIC MOTOR NAMEPLATE SPECIFICATIONS

How do we interpret an electric motor nameplate? Motor standards are established on a country by country basis.Fortunately though, the standards can be grouped into two major categories: NEMA and IEC (and its derivatives). In North America, the National Electric Manufacturers Association (NEMA) sets motor standards, including what should go on the nameplate (NEMA Standard MG 1-10.40 "Nameplate Marking for Medium Single-Phase and Polyphase Induction Motors").

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