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there is,for

Wound

cores

FOR CT’S / PT’S & METERING DEVICES

• Round / Donut Shape Core
• Rectangular Core
• Step Core

For Single/Three Phase Transformers
     (From 1 Kva to 1500 Kva or upto 315mm width)

• DUO Core
• Distributed Gap Core
• Diverging Distributed Gap Core
• E Core

These products offer various advantages such as increased space factor, lower power loss and Magnetizing current, fast assembly all of which result in lower costs to the manufactures.
Cores are wound after slitting is done as per the required shape, on the core-winding machines. The winding machine automatically stops when the pre-decided dimension is reached.
After winding, the cores are stress-relief annealed to restore the magnetic properties. The core are bonded where necessary, to provide increased firmness. All cores are spray painted if required, and tested for magnetic properties.

On receipt of material from slitting department, we enter the necessary data of the material in respective job record. Once the core gets ready, quality personnel checks and enters the record of its dimensional and its magnetic properties in the job record and send it for colour coating if require or direct packing.

Inside Diameter (d)			Outside Diameter (d)			Height (h)
OVER	UPTO	TOL.	OVER	UPTO	TOL.	OVER	UPTO	TOL.
30	100	+1.2	030	100	+1.5	0	150	+ 1.0-0
100	150	+1.5	100	200	+2.0	150	200	+1.2-0
150	200	+2.0	200	400	+3.0	200	500	+2.0-0
200	400	+3.0	400	800	+4.0	500	-	+3.0-0
400	700	+4.0	-	-	-	-	-	-

(For CT’s, PT’s and Metering Devices)

Sr. No.	Grade	Maximum Guaranteed No Load Current at 1.5T and 50 Hz
1	M4	0.32 AT/CM
2	M5	0.36 AT/CM
3	M6	0.42 AT/CM