ST Series is designed and built for the production of grain-oriented laminations suitable for the assembly of electric transformer cores with Step-Lap System and can cover up to a max sheet width of 420 mm.
Consistently with the transformer design, this machine is particularly suitable for the production of cores for transformer power ratings ranging from 63.5 to 6000 KVA.
45' StepLap Cutting and 90 Cutting
* Vertical Step-Lap (X Design): 3/5/7 Steps. Upto 4 Holes
* Hybrid Step-Lap (Y Design): 3/5/7 Steps. Upto 4 Holes
* Horizontal Step-Lap (Z Design): 3/4/5/6/7 Steps. Upto 4 Holes.
* 45' Conventional Design ( Basic Design): Upto 4 Holes.
* 90' Strip Lamination: Upto 6 Holes
Multi step-lap construction is well established as an industry standard where high efficiency transformers (using stacked cores) are
required. It allows manufacturers to produce stacked core transformers with the lowest possible no-load loss, sound level and magnetizing currents while simultaneously reducing core assembly times and simplifying top yoke insertion. In short, it helps you (the manufacturer) to be more competitive.
Multi step-lap cores are highly effective in transformers where a high no-load loss evaluation is attached, particularly on 3-phase units. The no-load loss is usually 3-4% lower than single step lap (2 Steps) and 13-15% lower than Butt-Lap Design.
Typically, the payback period for the additional costs associated with high efficiency core designs is short, less than 5 years. When compared with the expected lifetime of a transformer, which is typically between 20 and 40+ years, it is clear that significant financial savings can be made over the transformer lifetime.
ECO CUTTING
* End-Coil Loss: 1.5 - 2.0 meter.
* Machine Setting Loss:
Standard and basic design before massive production for Steplap cutting.
* Fill-Up Features: (StepLap Cutting)
When cutting Steplap cores, the following situations will increase scrap losses.
Material jammed: Due to bending material or slitting problems
Coil Finished: End-Coil that is not possible to process.
Power Goes Out: When electricity is not always stable.
Fill-Up features is designed for cutting particular piece to make a complete steplap set. For example: When processing 5 steps of Yoke sheets, during the third piece the coil is finished. You are only getting 1, 2, 3 sheets. Fill-up feature allows you to process only 4 and 5 to make a complete set.
SPEED
* 51 sheets/minute = 859 Kg/Hr
* Testing Standard:
1) ST-305 Speed at 99 (Range: 1-99)
2) Yoke without Hole 3) Size = 800x150mm 4) Thickness =0.30 (M5)
* Note: Productivity depends on setting and cutting sizes.
For more information, please refer to ST-305/420 Machine Output.pdf
B1 = Yoke
B2 = Side Limb
B3 = Center Limb
B1_2H = Yoke with 2 holes
B2_2H = Side Limb with 2 holes
B3_2H = Center Limb with 2 holes
