The core of the transformer is used to carry magnetic flux from primary winding to secondary winding. In this process some unwanted current (Eddy currents) are developed in the core, which is responsible for heat losses in the core. To increase the efficiency of the transformer it is necessary that there should be maximum flux linkage from primary to the secondary and losses minimized.
Introduction:
Three-phase EI core is made by the silicon steel strip. The model of EI lamination in standard sizes is from
3PEI-17.5 to 3PEI-120.The gap sizes of the transformer lamination core can be customized.
Type | a | b | c | d | e | Holes | Aperture(Φ) |
3PEI-17.5 | 87.5 | 17.5 | 17.5 | 17.5 | 52.5 | 4 | 6 |
3PEI-20 | 100 | 20 | 20 | 20 | 50 | 6 | 6 |
3PEI-20* | 100 | 20 | 20 | 20 | 60 | 4,6 | 6 |
3PEI-22 | 110 | 22 | 22 | 22 | 66 | 4 | 8 |
3PEI-22.2 | 122 | 22 | 28 | 22.2 | 61 | 4 | 6 |
3PEI-25 | 125 | 25 | 25 | 25 | 75 | 4 | 8 |
3PEI-27 | 135 | 27 | 27 | 27 | 81 | 4 | 8 |
3PEI-28 | 140 | 28 | 28 | 28 | 84 | 4 | 8 |
3PEI-29 | 145 | 29 | 29 | 29 | 72.5 | 4 | 8 |
3PEI-30 | 150 | 30 | 30 | 30 | 90 | 6 | 7 |
3PEI-30.5 | 152 | 30.5 | 30.5 | 30.5 | 76.25 | 6 | 6 |
3PEI-32 | 160 | 32 | 32 | 32 | 80 | 4 | 8 |
3PEI-32* | 160 | 32 | 32 | 32 | 96 | 4 | 8 |
3PEI-35 | 175 | 35 | 35 | 35 | 105 | 4 | 8 |
3PEI-36 | 180 | 36 | 36 | 36 | 90 | 6 | 8 |
3PEI-38 | 190 | 38 | 38 | 38 | 95 | 4,6 | 8,10.5 |
3PEI-38* | 190 | 38 | 38 | 38 | 114 | 6 | 8 |
3PEI-40 | 200 | 40 | 40 | 40 | 100 | 4 | 10.5 |
3PEI-40* | 200 | 40 | 40 | 40 | 120 | 4,6 | 10 |
3PEI-44 | 220 | 44 | 44 | 44 | 132 | 6 | 8,10.5,12.5 |
3PEI-45 | 225 | 45 | 45 | 45 | 135 | 4 | 10 |
3PEI-50 | 250 | 50 | 50 | 50 | 150 | 4,6 | 8,10.5 |
3PEI-56 | 280 | 56 | 56 | 56 | 168 | 4 | 12 |
3PEI-60 | 300 | 60 | 60 | 60 | 180 | 6 | 12 |
3PEI-61* | 288 | 61.3 | 52 | 61.3 | 144 | 4,6 | 12 |
3PEI-61 | 305 | 61 | 61 | 61 | 152.5 | 4,6 | 14 |
3PEI-70 | 350 | 70 | 70 | 70 | 210 | 6 | 13 |
3PEI-80 | 400 | 80 | 80 | 80 | 240 | 6 | 14 |
3PEI-90 | 450 | 90 | 90 | 90 | 270 | 6 | 14 |
3PEI-100 | 500 | 100 | 100 | 100 | 300 | 6 | 16 |
3PEI-120 | 600 | 120 | 120 | 120 | 320 | 6 | 16 |
Catalog:
FAQ:
1. Q: Can I get some samples?
A: Yes, sample order is available for quality checking and market test.
2. Q: What's the delivery time?
A: Sample order needs 2-3 days. Formal order needs 8-15 days.
3. Q: What's your payment terms?
A: We usually accept T/T at sight as the main payment terms, and other payment can also be negotiated.
4. Q: Do you have the prodcts in stock?
A: Yes, we will keep some general ones in stock.
5. Q: Can I mix different models in one container?
A: Yes, different models can be mixed up.