Manufacturers of quality strip wound toroidal cores

Airlink transformers toroidal cores are manufactured in a range of sizes which are kept in stock for immediate delivery.

In addition to our standard toroidal core sizes we would be pleased to quote for your special requirements.

• Material Unisil Mo89-27N (27M4)
• Maximum loss 0.89w/kg @ 1.5T 50Hz
• Widths 10 to 100mm
• Maximum OD 230mm Maximum ID 150mm Smallest ID 35mm
• All materials supplied to BSEN10107:2005
• Toroidal cores availble from stock
  

Grain Orientated Silicon Steel GOss/CRGO

The cold rolled grain oriented steel used in the production of airlink cores consists of 3% silico-iron alloy. Manufactured with a grain orientation facilitates very low power loss ideal for high efficiency transformers.

1.Up to 30% more flux for the same magnetising force
2.Increased rating for a given size of transformer.
3.Better regulation.
4.Reduction in size and weight
5.Reduced assembly time, storage and handling costs.

Limited of Tolerance

Inside diameter +-0.08mm Outside diameter +-0.08mm up to 150mm +-1.2mm up to 230mm Height +-0.8mm for cores up to 60mm, +-1.2mm for cores over 65mm

Calculation of Toroidal core weight

Nominal finish weight of toroidal core= 3.182/4x7.65x0.95x0.000001xHtx(od+id)xod-id)

od=Outside diameter id=Inside diameter Ht=Strip width

Performance Guarantee

Non-impregnated cores are normally offered with the following standard guarantee: 0.3mm grade M4 50Hz 1.0 Tesla limit: 19.0 A/M

Magnetic Degradation Occurs when toroidal cores are impregnated with varnish or epoxy coated. Light impregnated varnish +15% Epoxy coated +40%