Transformer CRGO Sheets

We are the reliable manufacturer, supplier, and exporter of transformer crgo sheets. Our in-depth process knowledge as well as modern production facilities allows us to successfully manufacture high quality mitred transformer lamination. The technical expertise of our team allows us to manufacture a wide range of transformer crgo sheets ranging from 25 kva to 75 mva 'v'. Our transformer crgo sheets are also available in multi-holing as per the customers’ requirements and needs. specifications

• ranging from 25 kva to 75mva
• available with 'v' notching
• available with holing facilities
• salient features
  • distribution and power transformer laminations in upto 75 mva.
  • step lap laminations with tip cutting (both horizontal & vertical step lap)to give reduced losses.
  • stress relief annealed laminations to give lower losses and lower current values.
  • tolerance chart for crgo laminations attributeacceptance limitsthickness+ l - 0.02 mm. Total difference in thickness in a direction perpendicular to rolling direction should not exceed 0.02 mmlengthupto 700mm + 0.0 - 0.5mm701 to 2000mm + 0.0 -1.0mmover 2000 mm + 0.0 - 1.5 mmwidthupto 150 mm +- 0.2 mm151 to 500 mm +- 0.2 mm501 mm and above +- 0.3 mmcamber0.9 mm max. On a length of 2000 mm per side on surface tablev notch90 deg + - 5 minutesmitred angle45 deg + -5 minuteshole diameter+ 0.10-00 mmstacking factor95 % min. For 0.23mm thick material96 % min. For 0.27 mm and 0.30 mm thick material96.5 % min. For 0.35 mm thick materialinsulation resistancemin. 10 ohms cm² as per franklin method described in is 649 -1997burr20 microns maximumweight of each step+0.5% to 1.0% or as per customers requirements.watt loss kgas per old aisi and sis 601 the watt losskg is as follows :-m-3 - 0.77 wattskg at1 .5t and 50 hzm-4 - 0.89 wattskg at 1 .5t and 50 hzm-5 - 0.97 wattskg at 1 .5t and 50 hzm-6 - 1.10 wattskg at 1 .5t and 50 hzhowever for the last couple of years the emphasis has shifted from the guaranteed watt loss at 1.5 t50 hz to the guaranteed watt loss at 1.7 t50hz.