An alternative to a zig zag transformer is a delta-wye transformer. These electric transformers are a more popular choice because they are better known as well as at times being less expensive than zig zag transformers; however, zig zag transformers have lower internal impedance and can be more effective in certain applications than delta-wye transformers. Read More…
Leading Manufacturers
Johnson Electric Coil Company
Antigo, WI | 800-826-9741We believe in offering the very best to all customers. We offer a full range of transformers, including electric transformers, current, and toroidal transformers.
Amgis Toroidal Power Products
Houston, TX | 832-400-4985AMGIS can supply your company with a variety of toroidal power products. Whether the application requires power toroidal transformers, toroidal inductors, commercial or medical isolation transformers, 3 phase transformers, auto transformers, high efficiency transformers for renewable energy, or custom toroidal applications, Amgis has a solution for your needs.
Lenco Electronics, Inc.
McHenry, IL | 815-344-2900Lenco Electronics, Inc. specializes in a wide variety of custom electric transformers. Lenco’s success has not come about by accident, but by providing its customers with high-quality products.
Magnetic Specialties, Inc
Telford, PA | 267-384-5231For half a century, Magnetic Specialties has created specialized electrical control components, subassemblies and devices for original equipment manufacturers of industrial equipment. Our business components include electric transformers, high accuracy instrument transformers, specialty transformers, toroids, inductors, filter, magnetic amplifiers and more. To learn more give us a call today.
Prem Magnetics Inc.
Johnsburg, IL | 815-385-2700Prem Magnetics was organized in 1972 as the Magnetics Division of Prem Enterprises (a machine shop) to be a manufacturer of coils and transformers. Prem Magnetics remains a leader in the transformer industry. In addition to our Illinois production facility, Prem operates a facility in Tecate, Mexico to manufacture products to the same quality standards. We are located roughly 40 miles northwest of Chicago, allowing access to anywhere in the world via numerous shipping hubs.
Zig Zag Transformers - Lenco Electronics, Inc.Zig zag transformers have earned their name from the zig zag design of their winding. Consisting of six coils on three separate cores, zig zag transformers have a primary winding but do not have a secondary winding. The windings for each phase of a zig zag transformer come in two halves. Thus, the difference in winding patterns results from the way in which the two halves of the windings interconnect while connecting the coils and the core.
Zig Zag Transformers - Lenco Electronics, Inc.On each core, there are two coils. The first coil is connected to the second coil through the windings, of which there are two for each phase. Thus the outer and inner windings are wound onto the same core, but they are wound in opposite directions. While the first coil on each core is connected to the second coil on the next core, the second coils are all wound together and create the neutral.
Since the phases are connected to the first coils, every phase is connected to every other phase, resulting in the voltages being canceled out. In order to provide earthing to ungrounded systems, a resistor is normally inserted between the neutral point of the transformer and the ground in order to limit the ground fault current and its effect on the system.