Toroidal Cores Grain Oriented

Our company can manufacture and supply grain-oriented silicon iron wound toroidal cores, 0,05 to 0,35 mm thick, in size to customers' specifications. These toroidal cores can be supplied with the following finishing:




  • Standard - employed by protection of a thermoplastic case termoplastiche a cura del cliente.

  • Stiffened with liquid resin - with liquid resin to protect the mangetic performance from copper winding mechanical action.

  • Covered with powdre epoxy resin ble to receive the copper winding without any other protection. They can arrive till 140° C, with a dielectric rigidity of about 40-50 KV/mm thickness 250 µ.


In order to meet the requirements of a magnetic circuit, we suggest to use where is possible, the following ratio:
 
 

Range of the available dimentions

d
mm
14 - 15 - 16 - 17 - 18 - 19 - 20 - 21
22 - 24 - 25 - 26 - 28 - 29 - 30 - 31
33 - 35 - 36 - 37 - 38 - 39 - 40 - 42
43 - 44 - 45 - 46 - 48 - 50 - 52 - 53
54 - 55 - 56 - 57 - 58 - 60 - 61 - 64
65 - 66 - 68 - 70 - 72 - 74 - 76 - 78
79 - 80 - 85 - 87 - 88 - 90 - 92 - 95
100-110-120-125-140-150-155-270-365-375
D
mm
Min. 25

Max 500

h
mm
10 - 13 - 15 - 18 - 19 - 20 - 22 - 25
28 - 30 - 32 - 35 - 38 - 40 - 45 - 50
60 - 70 - 75 - 80 - 85 - 90 - 95 - 100 - 105 - 110 - 115 - 120 - 125 - 130 - 135 - 140 - 145 - 150 - 155 - 160 - 165 - 170 - 175 - 180 - 185 - 190 - 195 -200

Magnetic performance

MATERIAL QUALITY SPECIFICATION THICKNESS mm FREQUENCY Hz MAGNETISING FIELD
 Heff. - As/cm
MIN.INDUCTION 
 
Tesla Wb/m²
 
G.O. M5T30 N2-003 0,3 50 0,03 0,055  
0,3 1,3  
10 1,7  
G.O. M4T27 N2-006 0,27 50 0,03 0,075  
0,3 1,4  
G.O. HI-B N2-020 0,3 50 0,03 0,1  
0,3 1,6  
1 1,75  
  LOSSES   Cores performance curves
W/KG
G.O. GT100 N2-040 0,1 400 8 1  
15 1,5  
G.O. GT100 N2-040 0,1 1000 10 0,5 Cores performance curves
G.O. GT50 N2-040 0,05 2000 15 0,5 Cores performance curves


Description Download
Toroidal Cores Standard Series

Expoxy resin covered for power transformers

Strip type M150-30S   B=1,7 Wb/m²   f = 50 Hz

Data table
Cores performance curves