BGOC is manufacturing following
quality products :
| Products |
Raw
Materials used with Grade |
End
use |
| Transformer
Cores & Laminations |
CRGO
Grades M3, M4, M5, M6, Orient Core - HI-B
& HI-B-LS 23ZDKH-90 & 27 ZDKH-95 |
Auto,
Distribution & Power Transformers |
| E
& I Laminations as per Customers special
specifications and design & standard type. |
All
CRGO Grade as stated above and CRNGO Grades
as per customers specifications. |
Control
Transformers, Instrument Transformers, Iron
Core Chokes. |
| Wound
Cores |
All
CRGO Grades as stated above as per customers
specifications. |
Current
Transformers. |
Specifications
of Raw Materials :
Cold
Rolled Grain Oriented (CRGO) Electrical Steel
Sheets :
Typical Electrical and Magnetic Properties of
:
| Grade |
Thickness
mm (inch) |
Core
Loss Watt per Kilogram 50 HZ |
Resistivity
Ohm
{X 10 -8} |
Induction
800 A/m |
Assumed
Density kg/dm |
Stacking
Factor % |
| |
|
1.5T |
1.7T |
|
|
|
|
| 23ZH90 |
0.23
(0.009) |
0.63 |
0.87 |
50 |
1.92 |
7.65 |
97.4
97.4
97.6
97.6
97.6
97.6 |
| 23ZH95 |
0.64 |
0.90 |
50 |
1.91 |
| M-OH |
0.66 |
0.93 |
50 |
1.90 |
| M-1 |
0.69 |
1.02 |
50 |
1.86 |
| M-2 |
0.71 |
1.08 |
50 |
1.85 |
| M-3 |
0.76 |
1.12 |
50 |
1.84 |
| 27ZH95 |
0.27
(0.0106) |
0.69 |
0.93 |
48 |
1.92 |
7.65 |
97.8 |
| 27ZH100 |
0.70 |
0.96 |
48 |
1.91 |
| M-OH |
0.72 |
0.99 |
48 |
1.91 |
| M-4 |
0.83 |
1.22 |
48 |
1.84 |
| M-5 |
0.30
(0.0118) |
0.90 |
1.29 |
48 |
1.83 |
7.65 |
98.1 |
| M-6 |
0.35
(0.0138) |
1.01 |
1.46 |
48 |
1.83 |
7.65 |
98.2 |
Cold
Rolled Non-Grain Oriented(CRNGO) Electrical Steel
Sheets :
Typical
Electrical & Magnetic properties
| Thickness |
Grade |
Specific
Cores Loss
W/kg. At. |
Magnetic
Induction
At 5000 AT/m(T) |
Hardness
(VPN) |
1.0
T
50 Hz |
1.5 T
50 Hz |
0.50
mm
(0.020 ) |
M-36 |
1.84 |
3.57 |
1.60 |
160-180 |
| M-43 |
1.70 |
4.01 |
1.61 |
160-180 |
| M-45 |
2.30 |
5.31 |
1.64 |
130-150 |
| M-47 |
4.00 |
6.98 |
1.68 |
130-150 |
0.65
mm
(0.026 ) |
M-36 |
2.16 |
4.18 |
1.60 |
160-180 |
| M-43 |
2.52 |
4.70 |
1.60 |
150-170 |
| M-45 |
3.03 |
6.27 |
1.64 |
130-150 |
Tolerances
for Laminations :
Our
Internal Standards & Normal Tolerances
| Width |
Nominal
width in mm |
Tolerance
in mm |
| |
<150 |
-0.2 |
| |
150
- 400 |
-0.3 |
| |
>400 |
-0.5 |
| Length |
Nominal
length in mm |
Tolerance
in mm |
| |
<315 |
+0/-0.4 |
| |
316
- 1000 |
+0/-0.6 |
| |
1001
- 2000 |
+0/-0.8 |
| |
>2000 |
+0/-1.0 |
| Burr
level |
25
Microns or 10% of thickness (Max.) |
| Angle |
+/-5
minutes |
| Edge
Camber |
The
camber measured on 2 mm must not exceed
0.2 mm for width >250 mm
0.3 mm for width <250 mm |
| Thickness
|
The
tolerance on the thickness at any point, on
any sheet, or strip measured by micrometer
at a point not less than 15 mm from any edge
shall not exceed +/- 10 percent of nominal
thickness of sheet. |
| Insulation
Resistivity |
Min.
10 Ohm/sq. cm. as per Franklin method. |
|
