|
SAMPLE
CORE DESIGN & CALCULATIONS
Joint
laps are illustrative only.
Number and spacing of joints will
vary.
| GUARANTEED
PROPERTIES |
| |
mm |
Inches |
| Ribbon
Width |
142 |
5.6 |
| A
= Window Height |
203
+ 3/-0 |
7.99
+ 0.13/-0 |
| B
= Window Width |
102
+ 3/-0 |
4.02
+ 0.13/-0 |
| C
= Core Build |
76.0
Maximum |
2.99
Maximum |
| D
=
Core
+ Cover Width |
146.0
Maximum |
5.75
Maximum |
| R
= Window Radius |
6.4
±1.5 |
0.25
±0.6 |
| Maximum
Build at Joint |
95.0
mm |
3.74
inches |
| Minimum
Core Net Area |
88.5
cm2 |
13.72
in2 |
| TEST
CONDITIONS |
| Frequency |
50
Hz |
60
Hz |
| Test
Voltage per Turn |
2.56 |
3.07 |
| Maximum
Core Loss |
11
Watts |
13
Watts |
| Maximum
Exciting Power |
110
VA |
127
VA |
| Measurements
taken without oil impregnation
at nominal 1.3 Tesla and ambient
temperature. |
| TYPICAL
PROPERTIES |
| Invoice
Weight |
55
kg |
121
lbs |
| Material:
Metglas® transformer
core alloy SA1 |
| SAMPLE
CALCULATIONS FOR ESTIMATING
CORE WEIGHT |
| Density
in g/cc: 7.20 |
|
| Lamination
factor: 82% |
| |
A
cm |
B
cm |
C
cm |
D
(-4 mm) cm |
| Sample
Core Dimension |
20.3 |
10.2 |
7.6 |
14.2 |
| Core
Weight (estimated) = (Lam. factor)
x (Density) x [(2 x A
x C x D)
+ (2 x B x
C x D)
+ (3.14 x C2
x D)]/1000
= 55 kg. |
*Use
this formula only for checking
weight to ensure your design
is within weight limits
(30 kg min., 225 kg max.). Also,
be sure to check that outer
perimeter is below 2.5 m. |
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|
