NOMAX Electrical Steel Private Limited Hatiara, Kolkata, West Bengal

The Step-lap CRGO Transformer Laminations design leads to low no-load losses and a low noise level, lateral step-lap enables a favourable assembly for the upper yoke. Every type of CRGO Transformer Cores can be produced in a form of Step lap, over lap, 45° cut, with hole or without hole from every required quality electrical steel up to 800 mm width. Nomax Electrical Steel Pvt. ltd. uses the newest, computerized version of Cut to Length Machines in order to produce Step-Lap CRGO Transformer Laminations Cores.

We manufactures complete CRGO assembled cores for distribution and power Transformers upto 10 MVA (10000 Kva) with no load losses tested and appropriately packed and ready for insertion of LV and HV coils. A pre-measuring of the CRGO core losses guarantees the required no-load losses of Transformers.

CRGO Toroidal cores are round or rectangular shaped CRGO cores manufactured from CRGO Steel to be used in current and Potential Transformers. Toroidal cores are manufactured from the best quality CRGO steel anare d annealed in a pit furnace to 820 degree C for full cycle of hours. We manufacture CRGO Toroidal cores in many different dimensions, made to order to customer specifications.

Grain oriented Electrical Steel CRGO is undoubtedly the most important soft magnetic material in use today. Wheather in small transformer, distribution transformer or in large transformer & generator, grain oriented electrical steel CRGO is a must for the production of energy saving electrical machines.

We manufacturer E&I cores from CRGO and CRNGO in many different dimention, made to order to customer specification as well as standard grades which is widely used in india in CRGO Grade M3, M4, M5 and M6 & CRNGO Grades M43, M45 OR as per customers specified grade. These type CRGO and CRNGO Transformer Cores are used in control transformer,Instrument Transformers and Iron core chokes,Ballast,And variety of electromagnetic application.

Core Loss details of popularly used CRNGO steel. Manufacturing mills of CRNGO steel guarantee the core loss figure at flux density of 1.5 Tesla.

Core Loss details of popularly used CRGO steel, Manufacturing mills of CRGO Steel guarantee the core loss figure at flux density of 1.5 Tesla in case of CRGO conventional grain oriented steel and at 1.7 Tesla in case of CRGO HI-B-Steel and CRGO HI-B-LS Steel.

Thickness : 0.23MM

We manufacture CRGO slit coils and CRNGO Slit Coils to customers specification from the required grade of materials. It is well known that handling and processing of Grain Oriented Electrical Steel (CRGO) can create undesirable stresses within the metal internal structure and at the cut edge. These stresses are a result of distortion of the crystal structure caused by the shearing process and result in increase of the hysterisis and decrease of permeability.

Nomax Electrical Steel Pvt. Ltd manufactures the following products : We manufacture Transformer Core Laminations for Power and Distrubution Transformer ranging from 10 KVA to 200000 KVA from Cold Rolled Grain Oriented (CRGO) steel in grades M2, M3, M4, M5, M6 and also the Hi-B CRGO grades of ZH, ZDKH, ZDMH, ORSI-H, TCH-O, TCH-1 etc. For more technical details on the various grades of CRGO steel, We are able to deliver CRGO Transformer Lamination Cores as leg or sheet packet, according to your packing requirements, inside of wooden box or on the pallets.

The FOURTH step of the manufacturing process of CRGO Transformer Cores is to deburr and stress relief anneal the material by other health annealing finance. This is done as per the mill's specification at 820 º C for a few minutes depending upon the thickness and grade of CRGO material. Since the electrical properties of CRGO cores are very critical, every core is tested on a specially designed test bench. The ampere turnscm (magnetization current) are measured on every core to ensure that they are within the specified limits.