Corefficient: Efficient to the Core

An electrical transformer grid, with many poles and wires, beneath a blue sky and white light overhead.

Corefficient is a transformer core manufacturing company that is dedicated to energy efficiency. Corefficient manufactures high-quality mitre cut cores and distributed gap cores that meet critical efficiency regulations. We have in-house annealing, testing, and finishing equipment, and experienced personnel to ensure product performance and durability. We manufacture and test our wound and SLFM cores for maximum quality and efficiency.

Based out of Monterrey, Mexico, Corefficient’s state-of-the-art facility is committed to adding value to their transformer core products combining experience and success in the fields of transformer core engineering, transformer core design, magnetic core expertise, cold rolled steel, grain-oriented steel, electrical steel, and – most importantly – customer service.

A magazine ad that reads “Your source for DG wound cores: extensive manufacturing capacity, roller hearth annealing furnace, quality and testing.” Gradient image of transformer cores on the manufacturing line shown to the right, and Corefficient’s official blue and orange logo top left.

Corefficient is a fully independent organization committed to the utmost customer information confidentiality. Our company has an ideal combination of young and experienced professionals, enhanced with a state-of-the-art facility and the market location reference for sustainable advantages of the electrical transformer supply chain. We move toward excellence in all of our processes – and we show it by being fully ISO-9001 certified.

At Corefficient, we value honesty and openness, respect and collaboration, and self-improvement and compliance through processes that promote ownership, responsibility, accountability, and teamwork. Our principles are safety, quality, and productivity through processes-based organization.

Why is the company named Corefficient? It is of the utmost importance to us that we create and sell efficient transformer cores. In order to achieve that goal, we offer in-house extensive testing services, including Epstein testing, Franklin testing, and single sheet testing.

Several transformer cores on Corefficient’s manufacturing line.

Here at Corefficient, we believe that what sets us apart is our extensive testing capabilities: no product leaves our laboratory without quality testing. We extensively test our incoming electrical steel to assure our customers are receiving the best end-product that we can provide, and, if the material doesn’t meet our specifications, we will not use it. Multiple rounds of stringent material and product testing are the key to our quality assurance.

Franklin Testing. Franklin testing is the method of testing single strips of flat-rolled electrical steel for surface insulation resistance under predetermined voltage, temperature, and pressure conditions. It is meant to give us insight into the chemical nature of the material. It also provides useful analytics about the material’s punchability, temperature stability, weldability, insulating ability, and fabricability. In our labs we utilize BROCKHAUS Measurements’ Franklin Tester FT 510.

Dimensional Testing. Near the final stages of electrical coil formation, dimensional testing is employed to analyze the consistency of the material’s width and thickness. It is essential that when electrical steel is formed into a coil, it is done in a uniform manner. This means the final coils should have no edge tapering and the thickness and width should not vary. We use the ASTM A971 method to test and confirm these attributes.

Coils that have been through dimensional testing are significantly less likely to have air spaces that allow energy loss. Thus, our stringent system of checks and balances guarantees that the final end-product, the transformer core, is energy-efficient.

A single sheet testing system/work station at Corefficient.

Single Sheet Testing. We employ Single Sheet Testing (SST) to ensure that the electrical steel in our transformer core coils has a high permeability and, subsequently, low, no-load losses of energy. A transformer core’s energy efficiency is highly dependent on the permeability of the electrical steel that makes up its coil.

Epstein Testing. With our state-of-the-art Brockhaus MPG 200 system, we test the magnetic properties of the electrical steel used in our transformer cores, including permeability and core loss. We employ both standard and custom Epstein frames. Each strip of steel is tested with different Tesla and frequency inputs, based on ASTM A717 methods.

An artistic representation of teamwork at Corefficient’s facility, showing transformer cores on the manufacturing line, featuring the Corefficient logo: an upside-down, striped blue triangle with a red lightning bolt inside, a blue circle encompasses the triangle, with the words “Value to the core.”

Through our extensive testing methods, Corefficient can truly claim its motto: Value to the Core!

Corefficient is a leader of the electrical transformer core market by consistently fulfilling the needs of our customers through operational excellence and product innovation, the needs of our employees through development, and the needs of our shareholders through financial stewardship.

Visit Corefficient’s website today: Contact us through our website or via phone: North America: 1 (704) 236-2510, Monterrey, México: (81) 2088-4000, or toll-free in the USA: 1 (844) 202-1226.

Related Posts
Promoting Sustainability Through Transformer Cores
Electrification in the Transportation Sector & the Role of the Transformer Core Manufacturer
Corefficient Energy Trailblazers Series: Hans Christian Ørsted