| KRYFS LAMINATIONS
PVT.LTD: Manufacturers of Transformer Laminations
& Transformer Components in India. |
 |
STACKED TRANSFORMER
CORE (Also known as
transformer
laminations) |
KRYFS manufactures the following
products :
We manufacture Transformer Core
laminations from Cold Rolled Grain Oriented (CRGO)
steel in grades M2, M3, M4, M5, M6 and also the
Hi-B CRGO grades of ZH, ZDKH, ZDMH, ORSI-H, TCH-O,
TCH-1 etc. For more technical details on the
various grades of CRGO steel. Click
here
These laminations are manufactured
for distribution and power transformers from 10
KVA to 200,000 KVA (200 MVA) and can be mitred (
45° angle ), V - notched, punched with holes as
per the customer's design, specification and
requirement. These laminations are also deburred (
to remove burrs and give the optimum stacking
factor ) and stress relief annealed (to reduce
stresses and therefore the watt losses as well as
the no load current ).These laminations meet the
specified dimensional standards (as per our
internal Quality acceptance criterion). We also
manufacture longitudnal and horizontal step-lap
cores to customer specification.
On
customer's request and specification we can also
provide fully assembled stacked core,with no load
losses tested and appropriately packed and ready
for insertion of LV and HV coils. We are the only
transformer core manufacturer in India to provide
this facility.
For more
information on various grades and properties of
CRGO
Click
Here >>
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Our Internal Standards &
Normal
Tolerances
|
ATTRIBUTE
|
TOLERANCE |
| Length |
(upto 315 mm) +0/-0.4 mm
(from
315 mm to 1000 mm) +0/-0.6 mm
(from 1000 mm
to 2000 mm) +0/-1 mm
(from 2000 mm to 4000
mm) +0/-1.6 mm
|
| Width |
(upto 150 mm) +0/-0.25 mm
(from 150 mm to 500 mm) +0/-0.3 mm
(more
than 500 mm) +0/-0.5 mm |
| Angle |
+/-5 minutes
|
| Edge Camber |
Max. 1.5 mm in 2000 mm length
|
| Burr |
25 Microns Max. or 10% of
thickness, whichever is lesser
|
| Stacking factor |
96% (for M-4 & M-5)
96.5%
(for M-6) |
| Thickness |
+/-0.03 mm
|
| Insulation resistivity
|
Min. 10 Ohm/sq. cm. as per
Franklin method
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TORROIDAL
CORE |
|
Torroidal cores are round or
rectangular shaped cores manufactured from CRGO
Steel to be used in current and potential
transformers (CTs and PTs ). Our Torroidal Cores
are manufactured from the very best CRGO steel and
are annealed in a pit furnace to 820°C for a full
cycle of 14 to 15 hours. The critical guaranteed
values of our Torroidal cores
are: | |
GRADE
|
Guaranteed No load current ( at
1.5 Tesla 50 H2 ) |
Hi - B grades
|
0.28 AT / cm
|
M4
|
0.32 AT / cm
|
M5
|
0.36 AT / cm
|
M6
|
0.42 AT / cm
|
GRADE
|
COLOUR
|
Hi - B grades
|
Brown
|
M4
|
Green
|
M5
|
Black
|
M6
|
Grey
|
AT / cm = Ampere Turns per
centimetre.
100% of our cores are tested
before dispatch so that our customers get only
those cores which are better than the above
guaranteed specs. We also paint the cores so that
the colour indicate the grade of the core. The
colour coding is as follows.
For more
information on this product click here>>
Torroidal
Core
|
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CRGO STRIPS & SLIT
COILS |
|
We also produce CRGO strips and
coils slit and manufactured to the customers
specification and design. These are supplied in
all available grades of CRGO
steel. | |
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OTHER PRODUCTS
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We also manufacture a range of
material handling equipment like slings, lashings
and harnesses. For more information on our
SLINGSET range of slings and lashings, visit us at
www.slingset.com | |
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