 |
|
| The TIW (Triple Insulated Winding
Wire) was developed by Totoku Electric Co.,Ltd. in switching power transformers. |
|
 |
|
 Features |
The insulation of the wire, which is made
up of three layers, completely isolates the primary from secondary of the trans-former. |
|
Unlike conventional enamelled wires, TIW
is classified as a wire with reinforced insulation as generally provided for in
va-rious safety standards. Therefore, it eliminates barriers, inter-layer tapes
or insulating tubes in the transformer. |
|
In addition to the reduction in size and
economy in material cost of the tramsformer made, TIW has an advantage of im-proving
its performance by reducing the distance between the coils. |
|
In joining the wires the insulation can be
easily stripped off by manual operation.Therefore, the fusing of the three layers
of insulation that may occur in soldering can be avoided. Fur-thermore, the insulation
of TIW is strong enough to withstand high-speed winding on the automatic wire
winder. For the satisfaction of the specific reguirement of customers, four types
of TIW are available. |
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|
|
|
 TIW-2
: |
Insulated with three layers
of Class E tape. General-purpose product with a creeping distance enough for 1000V
AC. Smallest outside diameter among the four types. |
|
TIW-3
: |
Insulated with three layers
of Class F tape. With a creeping distance enough for 1000V AC. Available is a
wide variety of combinations of the wire with bobbin and impregnating materials. |
|
TIW-4
: |
Insulated with three layers
of Class H tape. With a creeping distance enough for 1000V AC. Highest re-sistance
to heat among the four types. |
|
TIW-E
: |
Insulated with three layers
of extruded Class B fluoric resin. Excellent in the resistance to voltage such
as corona starting voltage. |
|
|
| Structure |
 |
|
| Structure |
| Conventional Transformer |
 |
|
| Transformer with TIW |
By eliminating the
barriers,interlayer tapes
and insulating tapes of the transformer,
TIW contributes to its miniaturigation,
material cost reduction
and performance improvement. |
 |
|
|
|
| Structure
and Size of TIW |
Conductor
Sige
(mm) |
Outside
Diameter(mm) |
Conductor
Resistanse
(Ω/km) |
Standard
Weight(g/m) |
| TIW-2 |
TIW-3 |
TIW-4 |
TIW-E |
TIW-2 |
TIW-3 |
TIW-4 |
TIW-E |
| 1/0.205 |
0.44±0.04 |
0.47±0.04 |
0.52±0.04 |
0.51±0.04 |
614
|
0.44 |
0.45 |
0.52 |
0.6 |
| 1/0.26 |
0.47±0.04 |
0.49±0.04 |
0.55±0.04 |
0.56±0.05 |
359
|
0.64 |
0.64 |
0.72 |
0.79 |
| 1/0.30 |
0.50±0.04 |
0.51±0.04 |
- |
- |
262
|
0.79 |
0.8 |
- |
- |
| 1/0.32 |
0.52±0.04 |
0.52±0.04 |
0.59±0.04 |
0.62±0.05 |
237
|
0.86 |
0.87 |
0.97 |
1.09 |
| 1/0.35 |
0.54±0.04 |
0.55±0.04 |
- |
- |
198
|
1.03 |
1.04 |
- |
- |
| 1/0.40 |
0.59±0.04 |
0.60±0.04 |
0.64±0.04 |
0.70±0.05 |
152
|
1.32 |
1.32 |
1.38 |
1.57 |
| 1/0.45 |
0.63±0.04 |
0.63±0.04 |
- |
0.75±0.05 |
120
|
1.62 |
1.61 |
- |
1.96 |
| 1/0.50 |
0.68±0.04 |
0.67±0.04 |
0.72±0.04 |
- |
95.1
|
1.95 |
1.91 |
2.03 |
- |
| 1/0.51 |
- |
- |
- |
0.81±0.05 |
89.3
|
- |
- |
- |
2.36 |
| 1/0.55 |
0.72±0.04 |
0.73±0.04 |
- |
- |
78.6
|
2.34 |
2.37 |
- |
- |
| 1/0.60 |
0.77±0.04 |
0.77±0.04 |
0.82±0.04 |
0.90±0.05 |
66.1
|
2.73 |
2.73 |
2.84 |
3.2 |
| 1/0.64 |
0.82±0.04 |
0.81±0.04 |
0.85±0.04 |
0.94±0.05 |
56.3
|
3.07 |
3.07 |
3.19 |
3.51 |
| 1/0.70 |
0.87±0.04 |
0.87±0.04 |
0.92±0.04 |
1.00±0.05 |
48.5
|
3.66 |
3.66 |
3.79 |
4.13 |
| 1/0.80 |
0.95±0.04 |
0.97±0.04 |
- |
- |
37.2
|
4.76 |
4.77 |
- |
- |
| 1/0.81 |
- |
- |
1.01±0.04 |
1.11±0.05 |
35.2
|
- |
- |
4.96 |
5.36 |
| 1/0.90 |
1.09±0.04 |
1.09±0.04 |
- |
1.20±0.05 |
29.4
|
6.09 |
6.09 |
- |
6.56 |
| 1/1.00 |
1.16±0.04 |
1.19±0.04 |
1.19±0.04 |
1.30±0.05 |
23.8
|
7.38 |
7.45 |
7.42 |
7.95 |
| 1/1.20 |
1.41±0.04 |
- |
1.40±0.04 |
1.50±0.05 |
16.5
|
10.52 |
- |
10.6 |
11.13 |
|
|
| *TIW with the conductor
of rectangular or Litz wire is also available. |
|
|
| Overseas Safety
Approvals Acquired |
|
| Approving
Agency |
Applicable
Standards |
Temperature Rating |
| TIW-2 |
TIW-3 |
TIW-4 |
TIW-E |
| UL |
UL2353
(UL60950-1, 60601-1)
|
B (130 ) |
F (155) |
A (105) |
F (155) |
| CSA |
C22.2 No.60950-1, 60065
|
B (130) |
F (155) |
H (180) |
F (155) |
Rheinland
|
EN60950-1, EN60065 |
B (130) |
F (155) |
H (180) |
F (155) |
| EN60601-1, IEC60601-1 |
B (130) |
F (155) |
- |
- |
| SEMKO |
EN60950-1, IEC60950-1
|
B (130) |
F (155) |
H (180) |
F (155) |
| VDE |
DIN EN60950-1
EN60950-1, IEC60950-1
|
B (130) |
F (155) |
- |
- |
| BSI |
BS EN60065, IEC60065
BS EN60950-1, IEC60950-1 |
B (130) |
F (155) |
- |
- |
| NEMKO |
EN60950-1
|
B (130) |
F (155) |
- |
|
| UL1446 insulating system |
|
UL requires that the wire rated at Class A(105 ) or above should be examined according to the UL1446 system. At present, the wires made by TOTOKU are used for the following systems: |
|
Sumitomo Bakelite
Co., Ltd. SBI* |
B (130) |
F (155) |
- |
F (155) |
Hitachi Chemical
Co., Ltd. HIS*
|
B (130) |
B (130) |
- |
B (130) |
|
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