Silicon Steel Cores

O CORE: An ideal core for audio transformer require extremely low magnetic leakage, low noise and high efficiencyO core also known as O-core or OA-core.O core is a tape wound core in electrical steel, with circular cross section.The key point of manufacturing an O core is material slitting, which is called curve slitting, material is slit into a continuous strip from small to big, and then from big to small in width. After the cores are wound, they are put into vacuum furnace for stress relief annealing, so that the cores with the best electrical performance.Standard core sizes from 10VA to 2000VA.FeaturesCircular cross sectionClosed magnetic pathLow magnetic leakageLow noiseHigh efficiencyAPPLICATIONS1.High-end transformers in Audio system2.Elevator transformer3.Machinery transformerOA cores can be supplied epoxy coated, cut or uncut.

C-CORES AND E-CORESTransmart Industrial manufactures a wide range of strip wound C-cores and E-cores, in standard ranges : Chinese, British, European and America.  All of which can be supplies to various electrical specifications. Customized sizes are welcome as Transmart is flexible to satisfy customer various demands.SERVICEC-coes and E-cores can be supplied with Stainless steel bands made specifically for each core.

Transmart Industrial Limited has been manufacturing wound cores with Domain-Refined Grain oriented Silicon Steel Grade 23JGSD085 for more than 10 years. Material characteristics:-        Domain-refined materials ( you can see clear lines on surface of the materials)-        Ultra-low iron loss: typical values 0.78W/Kg at 1.7 Tesla 50Hz-        High magnetic flux density: 1.88T at 800 A/m-        Heat resistant: materials can withstand annealing temperature up to 820℃, without affecting magnetic properties. Best applications: High quality tape wound cores for -        Current transformer cores-        Hall effect current sensor cores-        Current transducer cores Transmart is contributing its strength for the carbon peak in 2030 and carton neutral in 2060, by producing high quality magnetic cores with lower iron losses. Please contact us for your high quality cores, you will enjoy the benefits of energy savings! 

INSTRUMENT TRANSFORMER CORESTransmart Industrial manufacturer tape wound cores for current transformers and voltage transformers with the following materials:Grain oriented silicon steels: Thickness of 0.05mm, 0.08mm, 0.10mm, 0.20mm, 0.23mm, 0.27mm, 0.30mm and 0.35mm. Material width 5mm minimum.VARIOUS SHAPE CORES AVAILABLEToroidal core, oval core, rectangular core, cross-section core C cut core, Gap core.

Chamfered toroidal core also called edge-grinded toroidal core.Tape wound toroidal cores are with right-angled edges, which are very sharp and dangerous.The sharp edges will cut through insulation tapes and damage copper wires wound on the core.Transmart uses CNC machines to chamfer toroidal cores according to customer requests, radius from 1mm to 5mm, smooth edges finishing. Advantages of chamfer coresSmooth round edgesProtect insulation tapeProtect copper wiresShorter coil length ( less copper used, save money) 

We manufacture Tape Wound Cores for Current Sensors with the following soft magnetic materials:-Grain oriented silicon steel 23JGSD085, 23JGH090 ( JFE Japan)-Grain oriented silicon steel 23ZDMH085, 23ZH090 ( Nippon steel Japan)-Grain oriented silicon steel B23P085 ( Baosteel)-Grain oriented silicon steel 23SQGD085, 23SQG090 ( Shougang)-Fe-based Nanocrystalline ribbon 1K107B-Fe-based Amorphous ribbon 1K101APPLICATIONS1.Current sensors for automotive industry2.Current sensors for automation control industry3.Current Transducers

Transmart Industrial manufactures a wide range of strip wound C-cores and E-cores, in standard ranges : Chinese, British, European and America.  All of which can be supplies to various electrical specifications. Customized sizes are welcome as Transmart is flexible to satisfy customer various demands.SERVICEC-coes and E-cores can be supplied with Stainless steel bands made specifically for each core.